Merge remote-tracking branch 'origin/docs/wade-3.0' into docs/wade-3.0-pym
This commit is contained in:
Yaming Pei
commit
7bef4d5e3f
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@ -172,7 +172,7 @@ npm install @tdengine/rest
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|||
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||||
Just need to add the reference to [TDengine.Connector](https://www.nuget.org/packages/TDengine.Connector/) in the project configuration file.
|
||||
|
||||
```xml title=csharp.csproj {12}
|
||||
```xml title=csharp.csproj
|
||||
<Project Sdk="Microsoft.NET.Sdk">
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||||
|
||||
<PropertyGroup>
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||||
|
|
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|||
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@ -0,0 +1,122 @@
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|||
/*
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||||
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
|
||||
*
|
||||
* This program is free software: you can use, redistribute, and/or modify
|
||||
* it under the terms of the GNU Affero General Public License, version 3
|
||||
* or later ("AGPL"), as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE.
|
||||
*
|
||||
* You should have received a copy of the GNU Affero General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
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||||
*/
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||||
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||||
// TAOS standard API example. The same syntax as MySQL, but only a subset
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// to compile: gcc -o CSmlInsertDemo CSmlInsertDemo.c -ltaos
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "taos.h"
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static int DemoSmlInsert() {
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// ANCHOR: schemaless
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const char *ip = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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// connect
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TAOS *taos = taos_connect(ip, user, password, NULL, 0);
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if (taos == NULL) {
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printf("failed to connect to server, reason: %s\n", taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// create database
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TAOS_RES *result = taos_query(taos, "CREATE DATABASE IF NOT EXISTS power");
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int code = taos_errno(result);
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if (code != 0) {
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printf("failed to create database, reason: %s\n", taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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printf("success to create database\n");
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// use database
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result = taos_query(taos, "USE power");
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taos_free_result(result);
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// schemaless demo data
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char * line_demo = "meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639";
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char * telnet_demo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
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char * json_demo = "{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
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// influxdb line protocol
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char *lines[] = {line_demo};
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result = taos_schemaless_insert(taos, lines, 1, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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if (taos_errno(result) != 0) {
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printf("failed to insert schemaless line data, reason: %s\n", taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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int rows = taos_affected_rows(result);
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printf("success to insert %d rows of schemaless line data\n", rows);
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taos_free_result(result);
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// opentsdb telnet protocol
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char *telnets[] = {telnet_demo};
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result = taos_schemaless_insert(taos, telnets, 1, TSDB_SML_TELNET_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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if (taos_errno(result) != 0) {
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printf("failed to insert schemaless telnet data, reason: %s\n", taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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|
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rows = taos_affected_rows(result);
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printf("success to insert %d rows of schemaless telnet data\n", rows);
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taos_free_result(result);
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// opentsdb json protocol
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char *jsons[1] = {0};
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// allocate memory for json data. can not use static memory.
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jsons[0] = malloc(1024);
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if (jsons[0] == NULL) {
|
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printf("failed to allocate memory\n");
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taos_close(taos);
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||||
taos_cleanup();
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||||
return -1;
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||||
}
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(void)strncpy(jsons[0], json_demo, 1023);
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result = taos_schemaless_insert(taos, jsons, 1, TSDB_SML_JSON_PROTOCOL, TSDB_SML_TIMESTAMP_NOT_CONFIGURED);
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if (taos_errno(result) != 0) {
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free(jsons[0]);
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printf("failed to insert schemaless json data, reason: %s\n", taos_errstr(result));
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taos_close(taos);
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||||
taos_cleanup();
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return -1;
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||||
}
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free(jsons[0]);
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|
||||
rows = taos_affected_rows(result);
|
||||
printf("success to insert %d rows of schemaless json data\n", rows);
|
||||
taos_free_result(result);
|
||||
|
||||
// close & clean
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return 0;
|
||||
// ANCHOR_END: schemaless
|
||||
}
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|
||||
int main(int argc, char *argv[]) {
|
||||
return DemoSmlInsert();
|
||||
}
|
||||
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@ -0,0 +1,175 @@
|
|||
/*
|
||||
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
|
||||
*
|
||||
* This program is free software: you can use, redistribute, and/or modify
|
||||
* it under the terms of the GNU Affero General Public License, version 3
|
||||
* or later ("AGPL"), as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE.
|
||||
*
|
||||
* You should have received a copy of the GNU Affero General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
// TAOS standard API example. The same syntax as MySQL, but only a subset
|
||||
// to compile: gcc -o CStmtInsertDemo CStmtInsertDemo.c -ltaos
|
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|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/time.h>
|
||||
#include "taos.h"
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||||
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||||
/**
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||||
* @brief execute sql only.
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||||
*
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||||
* @param taos
|
||||
* @param sql
|
||||
*/
|
||||
void executeSQL(TAOS *taos, const char *sql) {
|
||||
TAOS_RES *res = taos_query(taos, sql);
|
||||
int code = taos_errno(res);
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||||
if (code != 0) {
|
||||
printf("%s\n", taos_errstr(res));
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||||
taos_free_result(res);
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||||
taos_close(taos);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
taos_free_result(res);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief check return status and exit program when error occur.
|
||||
*
|
||||
* @param stmt
|
||||
* @param code
|
||||
* @param msg
|
||||
*/
|
||||
void checkErrorCode(TAOS_STMT *stmt, int code, const char *msg) {
|
||||
if (code != 0) {
|
||||
printf("%s. code: %d, error: %s\n", msg,code,taos_stmt_errstr(stmt));
|
||||
taos_stmt_close(stmt);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
}
|
||||
|
||||
typedef struct {
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||||
int64_t ts;
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||||
float current;
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||||
int voltage;
|
||||
float phase;
|
||||
} Row;
|
||||
|
||||
int num_of_sub_table = 10;
|
||||
int num_of_row = 10;
|
||||
/**
|
||||
* @brief insert data using stmt API
|
||||
*
|
||||
* @param taos
|
||||
*/
|
||||
void insertData(TAOS *taos) {
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||||
// init
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||||
TAOS_STMT *stmt = taos_stmt_init(taos);
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// prepare
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const char *sql = "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)";
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int code = taos_stmt_prepare(stmt, sql, 0);
|
||||
checkErrorCode(stmt, code, "failed to execute taos_stmt_prepare");
|
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for (int i = 1; i <= num_of_sub_table; i++) {
|
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char table_name[20];
|
||||
sprintf(table_name, "d_bind_%d", i);
|
||||
char location[20];
|
||||
sprintf(location, "location_%d", i);
|
||||
|
||||
// set table name and tags
|
||||
TAOS_MULTI_BIND tags[2];
|
||||
// groupId
|
||||
tags[0].buffer_type = TSDB_DATA_TYPE_INT;
|
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tags[0].buffer_length = sizeof(int);
|
||||
tags[0].length = (int32_t *)&tags[0].buffer_length;
|
||||
tags[0].buffer = &i;
|
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tags[0].is_null = NULL;
|
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tags[0].num = 1;
|
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// location
|
||||
tags[1].buffer_type = TSDB_DATA_TYPE_BINARY;
|
||||
tags[1].buffer_length = strlen(location);
|
||||
tags[1].length =(int32_t *) &tags[1].buffer_length;
|
||||
tags[1].buffer = location;
|
||||
tags[1].is_null = NULL;
|
||||
tags[1].num = 1;
|
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code = taos_stmt_set_tbname_tags(stmt, table_name, tags);
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checkErrorCode(stmt, code, "failed to set table name and tags\n");
|
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|
||||
// insert rows
|
||||
TAOS_MULTI_BIND params[4];
|
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// ts
|
||||
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
|
||||
params[0].buffer_length = sizeof(int64_t);
|
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params[0].length = (int32_t *)¶ms[0].buffer_length;
|
||||
params[0].is_null = NULL;
|
||||
params[0].num = 1;
|
||||
// current
|
||||
params[1].buffer_type = TSDB_DATA_TYPE_FLOAT;
|
||||
params[1].buffer_length = sizeof(float);
|
||||
params[1].length = (int32_t *)¶ms[1].buffer_length;
|
||||
params[1].is_null = NULL;
|
||||
params[1].num = 1;
|
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// voltage
|
||||
params[2].buffer_type = TSDB_DATA_TYPE_INT;
|
||||
params[2].buffer_length = sizeof(int);
|
||||
params[2].length = (int32_t *)¶ms[2].buffer_length;
|
||||
params[2].is_null = NULL;
|
||||
params[2].num = 1;
|
||||
// phase
|
||||
params[3].buffer_type = TSDB_DATA_TYPE_FLOAT;
|
||||
params[3].buffer_length = sizeof(float);
|
||||
params[3].length = (int32_t *)¶ms[3].buffer_length;
|
||||
params[3].is_null = NULL;
|
||||
params[3].num = 1;
|
||||
|
||||
for (int j = 0; j < num_of_row; j++) {
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, NULL);
|
||||
long long milliseconds = tv.tv_sec * 1000LL + tv.tv_usec / 1000; // current timestamp in milliseconds
|
||||
int64_t ts = milliseconds + j;
|
||||
float current = (float)rand() / RAND_MAX * 30;
|
||||
int voltage = rand() % 300;
|
||||
float phase = (float)rand() / RAND_MAX;
|
||||
params[0].buffer = &ts;
|
||||
params[1].buffer = ¤t;
|
||||
params[2].buffer = &voltage;
|
||||
params[3].buffer = &phase;
|
||||
// bind param
|
||||
code = taos_stmt_bind_param(stmt, params);
|
||||
checkErrorCode(stmt, code, "failed to bind param");
|
||||
}
|
||||
// add batch
|
||||
code = taos_stmt_add_batch(stmt);
|
||||
checkErrorCode(stmt, code, "failed to add batch");
|
||||
// execute batch
|
||||
code = taos_stmt_execute(stmt);
|
||||
checkErrorCode(stmt, code, "failed to exec stmt");
|
||||
// get affected rows
|
||||
int affected = taos_stmt_affected_rows_once(stmt);
|
||||
printf("table %s insert %d rows.\n", table_name, affected);
|
||||
}
|
||||
taos_stmt_close(stmt);
|
||||
}
|
||||
|
||||
int main() {
|
||||
TAOS *taos = taos_connect("localhost", "root", "taosdata", NULL, 6030);
|
||||
if (taos == NULL) {
|
||||
printf("failed to connect to server\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
// create database and table
|
||||
executeSQL(taos, "CREATE DATABASE IF NOT EXISTS power");
|
||||
executeSQL(taos, "USE power");
|
||||
executeSQL(taos,
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS "
|
||||
"(groupId INT, location BINARY(24))");
|
||||
insertData(taos);
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
}
|
||||
|
|
@ -3,6 +3,7 @@
|
|||
connect/bin
|
||||
influxdbLine/bin
|
||||
optsJSON/bin
|
||||
nativesml/bin
|
||||
optsTelnet/bin
|
||||
query/bin
|
||||
sqlInsert/bin
|
||||
|
|
@ -11,9 +12,12 @@ subscribe/bin
|
|||
wsConnect/bin
|
||||
wsInsert/bin
|
||||
wsQuery/bin
|
||||
wssml/bin
|
||||
wsStmt/bin
|
||||
wssubscribe/bin
|
||||
connect/obj
|
||||
influxdbLine/obj
|
||||
nativesml/obj
|
||||
optsJSON/obj
|
||||
optsTelnet/obj
|
||||
query/obj
|
||||
|
|
@ -23,4 +27,6 @@ subscribe/obj
|
|||
wsConnect/obj
|
||||
wsInsert/obj
|
||||
wsQuery/obj
|
||||
wsStmt/obj
|
||||
wssml/obj
|
||||
wsStmt/obj
|
||||
wssubscribe/obj
|
||||
|
|
@ -3,16 +3,35 @@ using TDengine.Driver.Client;
|
|||
|
||||
namespace TDengineExample
|
||||
{
|
||||
|
||||
internal class ConnectExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
static void Main(String[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
var connectionString = "host=127.0.0.1;port=6030;username=root;password=taosdata";
|
||||
try
|
||||
{
|
||||
Console.WriteLine("connected");
|
||||
// Connect to TDengine server using Native
|
||||
var builder = new ConnectionStringBuilder(connectionString);
|
||||
// Open connection with using block, it will close the connection automatically
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
Console.WriteLine("Connected to " + connectionString + " successfully.");
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to connect to " + connectionString + "; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to connect to " + connectionString + "; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -27,6 +27,12 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "wsStmt", "wsStmt\wsStmt.csp
|
|||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "sqlinsert", "sqlInsert\sqlinsert.csproj", "{CD24BD12-8550-4627-A11D-707B446F48C3}"
|
||||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "nativesml", "nativesml\nativesml.csproj", "{18ADDBE8-B266-4A66-8CC5-CFF80B530EFD}"
|
||||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "wssml", "wssml\wssml.csproj", "{C3E62FDB-CCBC-4F72-ACF6-D3B2C39630E3}"
|
||||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "wssubscribe", "wssubscribe\wssubscribe.csproj", "{CB4BCBA5-C758-433F-8B90-7389F59E46BD}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|Any CPU = Debug|Any CPU
|
||||
|
|
@ -84,5 +90,17 @@ Global
|
|||
{CD24BD12-8550-4627-A11D-707B446F48C3}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{CD24BD12-8550-4627-A11D-707B446F48C3}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{CD24BD12-8550-4627-A11D-707B446F48C3}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
{18ADDBE8-B266-4A66-8CC5-CFF80B530EFD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{18ADDBE8-B266-4A66-8CC5-CFF80B530EFD}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{18ADDBE8-B266-4A66-8CC5-CFF80B530EFD}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{18ADDBE8-B266-4A66-8CC5-CFF80B530EFD}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
{C3E62FDB-CCBC-4F72-ACF6-D3B2C39630E3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{C3E62FDB-CCBC-4F72-ACF6-D3B2C39630E3}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{C3E62FDB-CCBC-4F72-ACF6-D3B2C39630E3}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{C3E62FDB-CCBC-4F72-ACF6-D3B2C39630E3}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
{CB4BCBA5-C758-433F-8B90-7389F59E46BD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{CB4BCBA5-C758-433F-8B90-7389F59E46BD}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{CB4BCBA5-C758-433F-8B90-7389F59E46BD}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{CB4BCBA5-C758-433F-8B90-7389F59E46BD}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
EndGlobalSection
|
||||
EndGlobal
|
||||
|
|
|
|||
|
|
@ -0,0 +1,57 @@
|
|||
using TDengine.Driver;
|
||||
using TDengine.Driver.Client;
|
||||
|
||||
namespace TDengineExample
|
||||
{
|
||||
internal class NativeSMLExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var host = "127.0.0.1";
|
||||
|
||||
var lineDemo =
|
||||
"meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639";
|
||||
|
||||
var telnetDemo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
|
||||
|
||||
var jsonDemo =
|
||||
"{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
|
||||
try
|
||||
{
|
||||
var builder =
|
||||
new ConnectionStringBuilder(
|
||||
$"host={host};port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
// create database
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
// use database
|
||||
client.Exec("USE power");
|
||||
// insert influx line protocol data
|
||||
client.SchemalessInsert(new[]{lineDemo}, TDengineSchemalessProtocol.TSDB_SML_LINE_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert opentsdb telnet protocol data
|
||||
client.SchemalessInsert(new[]{telnetDemo}, TDengineSchemalessProtocol.TSDB_SML_TELNET_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert json data
|
||||
client.SchemalessInsert(new []{jsonDemo}, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NOT_CONFIGURED, 0, ReqId.GetReqId());
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<OutputType>Exe</OutputType>
|
||||
<TargetFramework>net6.0</TargetFramework>
|
||||
<ImplicitUsings>enable</ImplicitUsings>
|
||||
<Nullable>enable</Nullable>
|
||||
</PropertyGroup>
|
||||
<ItemGroup>
|
||||
<PackageReference Include="TDengine.Connector" Version="3.1.*" />
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
|
|
@ -7,22 +7,51 @@ namespace TDengineExample
|
|||
{
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder =
|
||||
new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
// ANCHOR: main
|
||||
var host = "127.0.0.1";
|
||||
|
||||
var lineDemo =
|
||||
"meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639";
|
||||
|
||||
var telnetDemo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
|
||||
|
||||
var jsonDemo =
|
||||
"{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
|
||||
try
|
||||
{
|
||||
client.Exec("CREATE DATABASE test WAL_RETENTION_PERIOD 3600");
|
||||
client.Exec("use test");
|
||||
string[] lines =
|
||||
var builder =
|
||||
new ConnectionStringBuilder(
|
||||
$"protocol=WebSocket;host={host};port=6041;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
"[{\"metric\": \"meters.current\", \"timestamp\": 1648432611249, \"value\": 10.3, \"tags\": {\"location\": \"California.SanFrancisco\", \"groupid\": 2}}," +
|
||||
" {\"metric\": \"meters.voltage\", \"timestamp\": 1648432611249, \"value\": 219, \"tags\": {\"location\": \"California.LosAngeles\", \"groupid\": 1}}, " +
|
||||
"{\"metric\": \"meters.current\", \"timestamp\": 1648432611250, \"value\": 12.6, \"tags\": {\"location\": \"California.SanFrancisco\", \"groupid\": 2}}," +
|
||||
" {\"metric\": \"meters.voltage\", \"timestamp\": 1648432611250, \"value\": 221, \"tags\": {\"location\": \"California.LosAngeles\", \"groupid\": 1}}]"
|
||||
};
|
||||
client.SchemalessInsert(lines, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// create database
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
// use database
|
||||
client.Exec("USE power");
|
||||
// insert influx line protocol data
|
||||
client.SchemalessInsert(new[]{lineDemo}, TDengineSchemalessProtocol.TSDB_SML_LINE_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert opentsdb telnet protocol data
|
||||
client.SchemalessInsert(new[]{telnetDemo}, TDengineSchemalessProtocol.TSDB_SML_TELNET_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert json data
|
||||
client.SchemalessInsert(new []{jsonDemo}, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NOT_CONFIGURED, 0, ReqId.GetReqId());
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -13,8 +13,7 @@ namespace TDengineExample
|
|||
{
|
||||
try
|
||||
{
|
||||
client.Exec("use power");
|
||||
string query = "SELECT * FROM meters";
|
||||
string query = "SELECT * FROM power.meters";
|
||||
using (var rows = client.Query(query))
|
||||
{
|
||||
while (rows.Read())
|
||||
|
|
|
|||
|
|
@ -6,42 +6,162 @@ namespace TDengineExample
|
|||
{
|
||||
internal class SQLInsertExample
|
||||
{
|
||||
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
try
|
||||
{
|
||||
try
|
||||
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec("create database power");
|
||||
client.Exec("CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
string insertQuery =
|
||||
"INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.000', 10.30000, 219, 0.31000) " +
|
||||
"('2023-10-03 14:38:15.000', 12.60000, 218, 0.33000) " +
|
||||
"('2023-10-03 14:38:16.800', 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:16.650', 10.30000, 218, 0.25000) " +
|
||||
"power.d1003 USING power.meters TAGS(2,'California.LosAngeles') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.500', 11.80000, 221, 0.28000) " +
|
||||
"('2023-10-03 14:38:16.600', 13.40000, 223, 0.29000) " +
|
||||
"power.d1004 USING power.meters TAGS(3,'California.LosAngeles') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.000', 10.80000, 223, 0.29000) " +
|
||||
"('2023-10-03 14:38:06.500', 11.50000, 221, 0.35000)";
|
||||
client.Exec(insertQuery);
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Console.WriteLine(e.ToString());
|
||||
throw;
|
||||
CreateDatabaseAndTable(client);
|
||||
InsertData(client);
|
||||
QueryData(client);
|
||||
QueryWithReqId(client);
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
private static void CreateDatabaseAndTable(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: create_db_and_table
|
||||
try
|
||||
{
|
||||
// create database
|
||||
var affected = client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
Console.WriteLine($"Create database power, affected rows: {affected}");
|
||||
// create table
|
||||
affected = client.Exec(
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
Console.WriteLine($"Create table meters, affected rows: {affected}");
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to create db and table; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to create db and table; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: create_db_and_table
|
||||
}
|
||||
|
||||
private static void InsertData(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: insert_data
|
||||
try
|
||||
{
|
||||
// insert data
|
||||
var insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
var affectedRows = client.Exec(insertQuery);
|
||||
Console.WriteLine("insert " + affectedRows + " rows to power.meters successfully.");
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert data to power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert data to power.meters; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: insert_data
|
||||
}
|
||||
|
||||
private static void QueryData(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: select_data
|
||||
try
|
||||
{
|
||||
// query data
|
||||
var query = "SELECT ts, current, location FROM power.meters limit 100";
|
||||
using (var rows = client.Query(query))
|
||||
{
|
||||
while (rows.Read())
|
||||
{
|
||||
var ts = (DateTime)rows.GetValue(0);
|
||||
var current = (float)rows.GetValue(1);
|
||||
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
|
||||
Console.WriteLine(
|
||||
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to query data from power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to query data from power.meters; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: select_data
|
||||
}
|
||||
|
||||
private static void QueryWithReqId(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: query_id
|
||||
try
|
||||
{
|
||||
// query data
|
||||
var query = "SELECT ts, current, location FROM power.meters limit 1";
|
||||
// query with request id 3
|
||||
using (var rows = client.Query(query,3))
|
||||
{
|
||||
while (rows.Read())
|
||||
{
|
||||
var ts = (DateTime)rows.GetValue(0);
|
||||
var current = (float)rows.GetValue(1);
|
||||
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
|
||||
Console.WriteLine(
|
||||
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to execute sql with reqId; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to execute sql with reqId; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: query_id
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -5,34 +5,72 @@ namespace TDengineExample
|
|||
{
|
||||
internal class StmtInsertExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
var host = "127.0.0.1";
|
||||
var numOfSubTable = 10;
|
||||
var numOfRow = 10;
|
||||
var random = new Random();
|
||||
try
|
||||
{
|
||||
try
|
||||
var builder = new ConnectionStringBuilder($"host={host};port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec($"create database power");
|
||||
// create database
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
// use database
|
||||
client.Exec("USE power");
|
||||
// create table
|
||||
client.Exec(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
"CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
using (var stmt = client.StmtInit())
|
||||
{
|
||||
stmt.Prepare(
|
||||
"Insert into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(?,?,?,?)");
|
||||
var ts = new DateTime(2023, 10, 03, 14, 38, 05, 000);
|
||||
stmt.BindRow(new object[] { ts, (float)10.30000, (int)219, (float)0.31000 });
|
||||
stmt.AddBatch();
|
||||
stmt.Exec();
|
||||
var affected = stmt.Affected();
|
||||
Console.WriteLine($"affected rows: {affected}");
|
||||
String sql = "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)";
|
||||
stmt.Prepare(sql);
|
||||
for (int i = 1; i <= numOfSubTable; i++)
|
||||
{
|
||||
var tableName = $"d_bind_{i}";
|
||||
// set table name
|
||||
stmt.SetTableName(tableName);
|
||||
// set tags
|
||||
stmt.SetTags(new object[] { i, $"location_{i}" });
|
||||
var current = DateTime.Now;
|
||||
// bind rows
|
||||
for (int j = 0; j < numOfRow; j++)
|
||||
{
|
||||
stmt.BindRow(new object[]
|
||||
{
|
||||
current.Add(TimeSpan.FromMilliseconds(j)),
|
||||
random.NextSingle() * 30,
|
||||
random.Next(300),
|
||||
random.NextSingle()
|
||||
});
|
||||
}
|
||||
// add batch
|
||||
stmt.AddBatch();
|
||||
// execute
|
||||
stmt.Exec();
|
||||
// get affected rows
|
||||
var affectedRows = stmt.Affected();
|
||||
Console.WriteLine($"table {tableName} insert {affectedRows} rows.");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Console.WriteLine(e);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert to table meters using stmt; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
|
|
@ -1,5 +1,4 @@
|
|||
|
||||
using TDengine.Driver;
|
||||
using TDengine.Driver;
|
||||
using TDengine.Driver.Client;
|
||||
using TDengine.TMQ;
|
||||
|
||||
|
|
@ -9,65 +8,242 @@ namespace TMQExample
|
|||
{
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
try
|
||||
{
|
||||
try
|
||||
var builder = new ConnectionStringBuilder("host=127.0.0.1;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec("CREATE DATABASE power");
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
client.Exec("USE power");
|
||||
client.Exec(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
client.Exec("CREATE TOPIC topic_meters as SELECT * from power.meters");
|
||||
var cfg = new Dictionary<string, string>()
|
||||
{
|
||||
{ "group.id", "group1" },
|
||||
{ "auto.offset.reset", "latest" },
|
||||
{ "td.connect.ip", "127.0.0.1" },
|
||||
{ "td.connect.user", "root" },
|
||||
{ "td.connect.pass", "taosdata" },
|
||||
{ "td.connect.port", "6030" },
|
||||
{ "client.id", "tmq_example" },
|
||||
{ "enable.auto.commit", "true" },
|
||||
{ "msg.with.table.name", "false" },
|
||||
};
|
||||
var consumer = new ConsumerBuilder<Dictionary<string, object>>(cfg).Build();
|
||||
consumer.Subscribe(new List<string>() { "topic_meters" });
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
client.Exec("CREATE TOPIC IF NOT EXISTS topic_meters as SELECT * from power.meters");
|
||||
var consumer = CreateConsumer();
|
||||
// insert data
|
||||
Task.Run(InsertData);
|
||||
while (true)
|
||||
{
|
||||
using (var cr = consumer.Consume(500))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
foreach (var message in cr.Message)
|
||||
{
|
||||
Console.WriteLine(
|
||||
$"message {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
|
||||
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Console.WriteLine(e.ToString());
|
||||
throw;
|
||||
// consume message
|
||||
Consume(consumer);
|
||||
// seek
|
||||
Seek(consumer);
|
||||
// commit
|
||||
CommitOffset(consumer);
|
||||
// close
|
||||
Close(consumer);
|
||||
Console.WriteLine("Done");
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
static void InsertData()
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("host=localhost;port=6030;username=root;password=taosdata");
|
||||
var builder = new ConnectionStringBuilder("host=127.0.0.1;port=6030;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
client.Exec("INSERT into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(now,11.5,219,0.30)");
|
||||
client.Exec(
|
||||
"INSERT into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(now,11.5,219,0.30)");
|
||||
Task.Delay(1000).Wait();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
static IConsumer<Dictionary<string, object>> CreateConsumer()
|
||||
{
|
||||
// ANCHOR: create_consumer
|
||||
// consumer config
|
||||
var cfg = new Dictionary<string, string>()
|
||||
{
|
||||
{ "td.connect.port", "6030" },
|
||||
{ "auto.offset.reset", "latest" },
|
||||
{ "msg.with.table.name", "true" },
|
||||
{ "enable.auto.commit", "true" },
|
||||
{ "auto.commit.interval.ms", "1000" },
|
||||
{ "group.id", "group1" },
|
||||
{ "client.id", "client1" },
|
||||
{ "td.connect.ip", "127.0.0.1" },
|
||||
{ "td.connect.user", "root" },
|
||||
{ "td.connect.pass", "taosdata" },
|
||||
};
|
||||
IConsumer<Dictionary<string, object>> consumer = null!;
|
||||
try
|
||||
{
|
||||
// create consumer
|
||||
consumer = new ConsumerBuilder<Dictionary<string, object>>(cfg).Build();
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to create consumer; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
|
||||
// ANCHOR_END: create_consumer
|
||||
return consumer;
|
||||
}
|
||||
|
||||
static void Consume(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: subscribe
|
||||
try
|
||||
{
|
||||
// subscribe
|
||||
consumer.Subscribe(new List<string>() { "topic_meters" });
|
||||
for (int i = 0; i < 50; i++)
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
foreach (var message in cr.Message)
|
||||
{
|
||||
// handle message
|
||||
Console.WriteLine(
|
||||
$"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
|
||||
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to poll data; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to poll data; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
}
|
||||
|
||||
static void Seek(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: seek
|
||||
try
|
||||
{
|
||||
// get assignment
|
||||
var assignment = consumer.Assignment;
|
||||
// seek to the beginning
|
||||
foreach (var topicPartition in assignment)
|
||||
{
|
||||
consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0));
|
||||
}
|
||||
Console.WriteLine("assignment seek to beginning successfully");
|
||||
// poll data again
|
||||
for (int i = 0; i < 50; i++)
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
foreach (var message in cr.Message)
|
||||
{
|
||||
// handle message
|
||||
Console.WriteLine(
|
||||
$"second data polled: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
|
||||
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to seek; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: seek
|
||||
}
|
||||
|
||||
static void CommitOffset(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: commit_offset
|
||||
for (int i = 0; i < 5; i++)
|
||||
{
|
||||
try
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
// commit offset
|
||||
consumer.Commit(new List<TopicPartitionOffset>
|
||||
{
|
||||
cr.TopicPartitionOffset,
|
||||
});
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to commit offset; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: commit_offset
|
||||
}
|
||||
|
||||
static void Close(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: close
|
||||
try
|
||||
{
|
||||
// unsubscribe
|
||||
consumer.Unsubscribe();
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to unsubscribe consumer; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
finally
|
||||
{
|
||||
// close consumer
|
||||
consumer.Close();
|
||||
}
|
||||
// ANCHOR_END: close
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -6,13 +6,35 @@ namespace Examples
|
|||
{
|
||||
public class WSConnExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
static void Main(string[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
var connectionString =
|
||||
"protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata";
|
||||
try
|
||||
{
|
||||
Console.WriteLine("connected");
|
||||
// Connect to TDengine server using WebSocket
|
||||
var builder = new ConnectionStringBuilder(connectionString);
|
||||
// Open connection with using block, it will close the connection automatically
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
Console.WriteLine("Connected to " + connectionString + " successfully.");
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to connect to " + connectionString + "; ErrCode:" + e.Code +
|
||||
"; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to connect to " + connectionString + "; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,4 +1,5 @@
|
|||
using System;
|
||||
using System.Text;
|
||||
using TDengine.Driver;
|
||||
using TDengine.Driver.Client;
|
||||
|
||||
|
|
@ -8,39 +9,159 @@ namespace Examples
|
|||
{
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
try
|
||||
{
|
||||
try
|
||||
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;useSSL=false;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec("create database power");
|
||||
client.Exec("CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
string insertQuery =
|
||||
"INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.000', 10.30000, 219, 0.31000) " +
|
||||
"('2023-10-03 14:38:15.000', 12.60000, 218, 0.33000) " +
|
||||
"('2023-10-03 14:38:16.800', 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:16.650', 10.30000, 218, 0.25000) " +
|
||||
"power.d1003 USING power.meters TAGS(2,'California.LosAngeles') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.500', 11.80000, 221, 0.28000) " +
|
||||
"('2023-10-03 14:38:16.600', 13.40000, 223, 0.29000) " +
|
||||
"power.d1004 USING power.meters TAGS(3,'California.LosAngeles') " +
|
||||
"VALUES " +
|
||||
"('2023-10-03 14:38:05.000', 10.80000, 223, 0.29000) " +
|
||||
"('2023-10-03 14:38:06.500', 11.50000, 221, 0.35000)";
|
||||
client.Exec(insertQuery);
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Console.WriteLine(e.ToString());
|
||||
throw;
|
||||
CreateDatabaseAndTable(client);
|
||||
InsertData(client);
|
||||
QueryData(client);
|
||||
QueryWithReqId(client);
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
private static void CreateDatabaseAndTable(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: create_db_and_table
|
||||
try
|
||||
{
|
||||
// create database
|
||||
var affected = client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
Console.WriteLine($"Create database power, affected rows: {affected}");
|
||||
// create table
|
||||
affected = client.Exec(
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
Console.WriteLine($"Create table meters, affected rows: {affected}");
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to create db and table; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to create db and table; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: create_db_and_table
|
||||
}
|
||||
|
||||
private static void InsertData(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: insert_data
|
||||
try
|
||||
{
|
||||
// insert data
|
||||
var insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
var affectedRows = client.Exec(insertQuery);
|
||||
Console.WriteLine("insert " + affectedRows + " rows to power.meters successfully.");
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert data to power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert data to power.meters; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: insert_data
|
||||
}
|
||||
|
||||
private static void QueryData(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: select_data
|
||||
try
|
||||
{
|
||||
// query data
|
||||
var query = "SELECT ts, current, location FROM power.meters limit 100";
|
||||
using (var rows = client.Query(query))
|
||||
{
|
||||
while (rows.Read())
|
||||
{
|
||||
var ts = (DateTime)rows.GetValue(0);
|
||||
var current = (float)rows.GetValue(1);
|
||||
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
|
||||
Console.WriteLine(
|
||||
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to query data from power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to query data from power.meters; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: select_data
|
||||
}
|
||||
|
||||
private static void QueryWithReqId(ITDengineClient client)
|
||||
{
|
||||
// ANCHOR: query_id
|
||||
try
|
||||
{
|
||||
// query data
|
||||
var query = "SELECT ts, current, location FROM power.meters limit 1";
|
||||
// query with request id 3
|
||||
using (var rows = client.Query(query,3))
|
||||
{
|
||||
while (rows.Read())
|
||||
{
|
||||
var ts = (DateTime)rows.GetValue(0);
|
||||
var current = (float)rows.GetValue(1);
|
||||
var location = Encoding.UTF8.GetString((byte[])rows.GetValue(2));
|
||||
Console.WriteLine(
|
||||
$"ts: {ts:yyyy-MM-dd HH:mm:ss.fff}, current: {current}, location: {location}");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to execute sql with reqId; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to execute sql with reqId; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: query_id
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -14,8 +14,7 @@ namespace Examples
|
|||
{
|
||||
try
|
||||
{
|
||||
client.Exec("use power");
|
||||
string query = "SELECT * FROM meters";
|
||||
string query = "SELECT * FROM power.meters";
|
||||
using (var rows = client.Query(query))
|
||||
{
|
||||
while (rows.Read())
|
||||
|
|
|
|||
|
|
@ -6,36 +6,72 @@ namespace Examples
|
|||
{
|
||||
public class WSStmtExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var builder =
|
||||
new ConnectionStringBuilder(
|
||||
"protocol=WebSocket;host=localhost;port=6041;useSSL=false;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
var host = "127.0.0.1";
|
||||
var numOfSubTable = 10;
|
||||
var numOfRow = 10;
|
||||
var random = new Random();
|
||||
try
|
||||
{
|
||||
try
|
||||
var builder = new ConnectionStringBuilder($"protocol=WebSocket;host={host};port=6041;useSSL=false;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec($"create database power");
|
||||
// create database
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
// use database
|
||||
client.Exec("USE power");
|
||||
// create table
|
||||
client.Exec(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
"CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
using (var stmt = client.StmtInit())
|
||||
{
|
||||
stmt.Prepare(
|
||||
"Insert into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(?,?,?,?)");
|
||||
var ts = new DateTime(2023, 10, 03, 14, 38, 05, 000);
|
||||
stmt.BindRow(new object[] { ts, (float)10.30000, (int)219, (float)0.31000 });
|
||||
stmt.AddBatch();
|
||||
stmt.Exec();
|
||||
var affected = stmt.Affected();
|
||||
Console.WriteLine($"affected rows: {affected}");
|
||||
String sql = "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)";
|
||||
stmt.Prepare(sql);
|
||||
for (int i = 1; i <= numOfSubTable; i++)
|
||||
{
|
||||
var tableName = $"d_bind_{i}";
|
||||
// set table name
|
||||
stmt.SetTableName(tableName);
|
||||
// set tags
|
||||
stmt.SetTags(new object[] { i, $"location_{i}" });
|
||||
var current = DateTime.Now;
|
||||
// bind rows
|
||||
for (int j = 0; j < numOfRow; j++)
|
||||
{
|
||||
stmt.BindRow(new object[]
|
||||
{
|
||||
current.Add(TimeSpan.FromMilliseconds(j)),
|
||||
random.NextSingle() * 30,
|
||||
random.Next(300),
|
||||
random.NextSingle()
|
||||
});
|
||||
}
|
||||
// add batch
|
||||
stmt.AddBatch();
|
||||
// execute
|
||||
stmt.Exec();
|
||||
// get affected rows
|
||||
var affectedRows = stmt.Affected();
|
||||
Console.WriteLine($"table {tableName} insert {affectedRows} rows.");
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
Console.WriteLine(e);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert to table meters using stmt; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
using TDengine.Driver;
|
||||
using TDengine.Driver.Client;
|
||||
|
||||
namespace TDengineExample
|
||||
{
|
||||
internal class WssmlExample
|
||||
{
|
||||
// ANCHOR: main
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
var host = "127.0.0.1";
|
||||
|
||||
var lineDemo =
|
||||
"meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639";
|
||||
|
||||
var telnetDemo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
|
||||
|
||||
var jsonDemo =
|
||||
"{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
|
||||
try
|
||||
{
|
||||
var builder =
|
||||
new ConnectionStringBuilder(
|
||||
$"protocol=WebSocket;host={host};port=6041;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
// create database
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
// use database
|
||||
client.Exec("USE power");
|
||||
// insert influx line protocol data
|
||||
client.SchemalessInsert(new[]{lineDemo}, TDengineSchemalessProtocol.TSDB_SML_LINE_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert opentsdb telnet protocol data
|
||||
client.SchemalessInsert(new[]{telnetDemo}, TDengineSchemalessProtocol.TSDB_SML_TELNET_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_MILLI_SECONDS, 0, ReqId.GetReqId());
|
||||
// insert json data
|
||||
client.SchemalessInsert(new []{jsonDemo}, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
|
||||
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NOT_CONFIGURED, 0, ReqId.GetReqId());
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<OutputType>Exe</OutputType>
|
||||
<TargetFramework>net6.0</TargetFramework>
|
||||
<ImplicitUsings>enable</ImplicitUsings>
|
||||
<Nullable>enable</Nullable>
|
||||
</PropertyGroup>
|
||||
<ItemGroup>
|
||||
<PackageReference Include="TDengine.Connector" Version="3.1.*" />
|
||||
</ItemGroup>
|
||||
</Project>
|
||||
|
|
@ -0,0 +1,250 @@
|
|||
using TDengine.Driver;
|
||||
using TDengine.Driver.Client;
|
||||
using TDengine.TMQ;
|
||||
|
||||
namespace TMQExample
|
||||
{
|
||||
internal class SubscribeDemo
|
||||
{
|
||||
public static void Main(string[] args)
|
||||
{
|
||||
try
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
client.Exec("CREATE DATABASE IF NOT EXISTS power");
|
||||
client.Exec("USE power");
|
||||
client.Exec(
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
client.Exec("CREATE TOPIC IF NOT EXISTS topic_meters as SELECT * from power.meters");
|
||||
var consumer = CreateConsumer();
|
||||
// insert data
|
||||
Task.Run(InsertData);
|
||||
// consume message
|
||||
Consume(consumer);
|
||||
// seek
|
||||
Seek(consumer);
|
||||
// commit
|
||||
CommitOffset(consumer);
|
||||
// close
|
||||
Close(consumer);
|
||||
Console.WriteLine("Done");
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine(e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
static void InsertData()
|
||||
{
|
||||
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;username=root;password=taosdata");
|
||||
using (var client = DbDriver.Open(builder))
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
client.Exec(
|
||||
"INSERT into power.d1001 using power.meters tags(2,'California.SanFrancisco') values(now,11.5,219,0.30)");
|
||||
Task.Delay(1000).Wait();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static IConsumer<Dictionary<string, object>> CreateConsumer()
|
||||
{
|
||||
// ANCHOR: create_consumer
|
||||
// consumer config
|
||||
var cfg = new Dictionary<string, string>()
|
||||
{
|
||||
{"td.connect.type", "WebSocket"},
|
||||
{ "td.connect.port", "6041" },
|
||||
{ "auto.offset.reset", "latest" },
|
||||
{ "msg.with.table.name", "true" },
|
||||
{ "enable.auto.commit", "true" },
|
||||
{ "auto.commit.interval.ms", "1000" },
|
||||
{ "group.id", "group1" },
|
||||
{ "client.id", "client1" },
|
||||
{ "td.connect.ip", "127.0.0.1" },
|
||||
{ "td.connect.user", "root" },
|
||||
{ "td.connect.pass", "taosdata" },
|
||||
};
|
||||
IConsumer<Dictionary<string, object>> consumer = null!;
|
||||
try
|
||||
{
|
||||
// create consumer
|
||||
consumer = new ConsumerBuilder<Dictionary<string, object>>(cfg).Build();
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to create consumer; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
|
||||
// ANCHOR_END: create_consumer
|
||||
return consumer;
|
||||
}
|
||||
|
||||
static void Consume(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: subscribe
|
||||
try
|
||||
{
|
||||
// subscribe
|
||||
consumer.Subscribe(new List<string>() { "topic_meters" });
|
||||
for (int i = 0; i < 50; i++)
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
foreach (var message in cr.Message)
|
||||
{
|
||||
// handle message
|
||||
Console.WriteLine(
|
||||
$"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
|
||||
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to poll data; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to poll data; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
}
|
||||
|
||||
static void Seek(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: seek
|
||||
try
|
||||
{
|
||||
// get assignment
|
||||
var assignment = consumer.Assignment;
|
||||
// seek to the beginning
|
||||
foreach (var topicPartition in assignment)
|
||||
{
|
||||
consumer.Seek(new TopicPartitionOffset(topicPartition.Topic, topicPartition.Partition, 0));
|
||||
}
|
||||
Console.WriteLine("assignment seek to beginning successfully");
|
||||
// poll data again
|
||||
for (int i = 0; i < 50; i++)
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
foreach (var message in cr.Message)
|
||||
{
|
||||
// handle message
|
||||
Console.WriteLine(
|
||||
$"second data polled: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
|
||||
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to seek; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
// ANCHOR_END: seek
|
||||
}
|
||||
|
||||
static void CommitOffset(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: commit_offset
|
||||
for (int i = 0; i < 5; i++)
|
||||
{
|
||||
try
|
||||
{
|
||||
// consume message with using block to ensure the result is disposed
|
||||
using (var cr = consumer.Consume(100))
|
||||
{
|
||||
if (cr == null) continue;
|
||||
// commit offset
|
||||
consumer.Commit(new List<TopicPartitionOffset>
|
||||
{
|
||||
cr.TopicPartitionOffset,
|
||||
});
|
||||
}
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to commit offset; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: commit_offset
|
||||
}
|
||||
|
||||
static void Close(IConsumer<Dictionary<string, object>> consumer)
|
||||
{
|
||||
// ANCHOR: close
|
||||
try
|
||||
{
|
||||
// unsubscribe
|
||||
consumer.Unsubscribe();
|
||||
}
|
||||
catch (TDengineError e)
|
||||
{
|
||||
// handle TDengine error
|
||||
Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
|
||||
throw;
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
// handle other exceptions
|
||||
Console.WriteLine("Failed to unsubscribe consumer; Err:" + e.Message);
|
||||
throw;
|
||||
}
|
||||
finally
|
||||
{
|
||||
// close consumer
|
||||
consumer.Close();
|
||||
}
|
||||
// ANCHOR_END: close
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<OutputType>Exe</OutputType>
|
||||
<TargetFramework>net6.0</TargetFramework>
|
||||
<ImplicitUsings>enable</ImplicitUsings>
|
||||
<Nullable>enable</Nullable>
|
||||
</PropertyGroup>
|
||||
<ItemGroup>
|
||||
<PackageReference Include="TDengine.Connector" Version="3.1.3" GeneratePathProperty="true" />
|
||||
</ItemGroup>
|
||||
</Project>
|
||||
|
|
@ -13,6 +13,6 @@ func main() {
|
|||
if err != nil {
|
||||
log.Fatalln("failed to connect, err:", err)
|
||||
} else {
|
||||
fmt.Println("connected")
|
||||
fmt.Println("Connected")
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -9,16 +9,14 @@ import (
|
|||
)
|
||||
|
||||
func main() {
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@tcp(localhost:6030)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
var taosDSN = "root:taosdata@tcp(localhost:6030)/"
|
||||
taos, err := sql.Open("taosSql", taosDSN)
|
||||
if err != nil {
|
||||
log.Fatalln("failed to connect TDengine, err:", err)
|
||||
return
|
||||
}
|
||||
fmt.Println("Connected")
|
||||
fmt.Println("Connected to " + taosDSN + " successfully.")
|
||||
defer taos.Close()
|
||||
}
|
||||
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@tcp(localhost:6030)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
|
|
|
|||
|
|
@ -0,0 +1,32 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
|
||||
func main() {
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@tcp(localhost:6030)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
var taosDSN = "root:taosdata@tcp(localhost:6030)/"
|
||||
taos, err := sql.Open("taosSql", taosDSN)
|
||||
if err != nil {
|
||||
log.Fatalln("failed to connect TDengine, err:", err)
|
||||
}
|
||||
fmt.Println("Connected")
|
||||
defer taos.Close()
|
||||
// ANCHOR: pool
|
||||
// SetMaxOpenConns sets the maximum number of open connections to the database. 0 means unlimited.
|
||||
taos.SetMaxOpenConns(0)
|
||||
// SetMaxIdleConns sets the maximum number of connections in the idle connection pool.
|
||||
taos.SetMaxIdleConns(2)
|
||||
// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
|
||||
taos.SetConnMaxLifetime(0)
|
||||
// SetConnMaxIdleTime sets the maximum amount of time a connection may be idle.
|
||||
taos.SetConnMaxIdleTime(0)
|
||||
// ANCHOR_END: pool
|
||||
}
|
||||
|
|
@ -9,16 +9,14 @@ import (
|
|||
)
|
||||
|
||||
func main() {
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@http(localhost:6041)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
var taosDSN = "root:taosdata@http(localhost:6041)/"
|
||||
taos, err := sql.Open("taosRestful", taosDSN)
|
||||
if err != nil {
|
||||
log.Fatalln("failed to connect TDengine, err:", err)
|
||||
return
|
||||
}
|
||||
fmt.Println("Connected")
|
||||
fmt.Println("Connected to " + taosDSN + " successfully.")
|
||||
defer taos.Close()
|
||||
}
|
||||
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@http(localhost:6041)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
|
|
|
|||
|
|
@ -0,0 +1,22 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosWS"
|
||||
)
|
||||
|
||||
func main() {
|
||||
// use
|
||||
// var taosDSN = "root:taosdata@ws(localhost:6041)/dbName"
|
||||
// if you want to connect a specified database named "dbName".
|
||||
var taosDSN = "root:taosdata@ws(localhost:6041)/"
|
||||
taos, err := sql.Open("taosWS", taosDSN)
|
||||
if err != nil {
|
||||
log.Fatalln("failed to connect TDengine, err:", err)
|
||||
}
|
||||
fmt.Println("Connected to " + taosDSN + " successfully.")
|
||||
defer taos.Close()
|
||||
}
|
||||
|
|
@ -2,5 +2,12 @@ module goexample
|
|||
|
||||
go 1.17
|
||||
|
||||
require github.com/taosdata/driver-go/v3 v3.1.0
|
||||
require github.com/taosdata/driver-go/v3 v3.5.6
|
||||
|
||||
require (
|
||||
github.com/google/uuid v1.3.0 // indirect
|
||||
github.com/gorilla/websocket v1.5.0 // indirect
|
||||
github.com/json-iterator/go v1.1.12 // indirect
|
||||
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
|
||||
github.com/modern-go/reflect2 v1.0.2 // indirect
|
||||
)
|
||||
|
|
|
|||
|
|
@ -1,15 +1,25 @@
|
|||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
|
||||
github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
|
||||
github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
|
||||
github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
|
||||
github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
|
||||
github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
|
||||
github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
|
||||
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
|
||||
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
|
||||
github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
|
||||
github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
|
||||
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
|
||||
github.com/taosdata/driver-go/v3 v3.1.0/go.mod h1:H2vo/At+rOPY1aMzUV9P49SVX7NlXb3LAbKw+MCLrmU=
|
||||
github.com/taosdata/driver-go/v3 v3.5.6 h1:LDVtMyT3B9p2VREsd5KKM91D4Y7P4kSdh2SQumXi8bk=
|
||||
github.com/taosdata/driver-go/v3 v3.5.6/go.mod h1:H2vo/At+rOPY1aMzUV9P49SVX7NlXb3LAbKw+MCLrmU=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
|
||||
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
|
||||
|
|
|
|||
|
|
@ -0,0 +1,56 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
|
||||
func main() {
|
||||
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
|
||||
if err != nil {
|
||||
log.Fatal("Open database error: ", err)
|
||||
}
|
||||
defer db.Close()
|
||||
initEnv(db)
|
||||
// ANCHOR: query_id
|
||||
// use context to set request id
|
||||
ctx := context.WithValue(context.Background(), "taos_req_id", int64(3))
|
||||
// execute query with context
|
||||
rows, err := db.QueryContext(ctx, "SELECT ts, current, location FROM power.meters limit 1")
|
||||
if err != nil {
|
||||
log.Fatal("Query error: ", err)
|
||||
}
|
||||
for rows.Next() {
|
||||
var (
|
||||
ts time.Time
|
||||
current float32
|
||||
location string
|
||||
)
|
||||
err = rows.Scan(&ts, ¤t, &location)
|
||||
if err != nil {
|
||||
log.Fatal("Scan error: ", err)
|
||||
}
|
||||
fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location)
|
||||
}
|
||||
// ANCHOR_END: query_id
|
||||
}
|
||||
|
||||
func initEnv(conn *sql.DB) {
|
||||
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("Create database error: ", err)
|
||||
}
|
||||
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
if err != nil {
|
||||
log.Fatal("Create table error: ", err)
|
||||
}
|
||||
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
|
||||
if err != nil {
|
||||
log.Fatal("Insert data error: ", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/af"
|
||||
)
|
||||
|
||||
func main() {
|
||||
host := "127.0.0.1"
|
||||
lineDemo := "meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639"
|
||||
telnetDemo := "metric_telnet 1707095283260 4 host=host0 interface=eth0"
|
||||
jsonDemo := "{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}"
|
||||
|
||||
conn, err := af.Open(host, "root", "taosdata", "", 0)
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer conn.Close()
|
||||
_, err = conn.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
_, err = conn.Exec("USE power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to use database, err:", err)
|
||||
}
|
||||
// insert influxdb line protocol
|
||||
err = conn.InfluxDBInsertLines([]string{lineDemo}, "ms")
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert influxdb line protocol, err:", err)
|
||||
}
|
||||
// insert opentsdb telnet protocol
|
||||
err = conn.OpenTSDBInsertTelnetLines([]string{telnetDemo})
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert opentsdb telnet line protocol, err:", err)
|
||||
}
|
||||
// insert opentsdb json protocol
|
||||
err = conn.OpenTSDBInsertJsonPayload(jsonDemo)
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert opentsdb json format protocol, err:", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/common"
|
||||
_ "github.com/taosdata/driver-go/v3/taosWS"
|
||||
"github.com/taosdata/driver-go/v3/ws/schemaless"
|
||||
)
|
||||
|
||||
func main() {
|
||||
host := "127.0.0.1"
|
||||
lineDemo := "meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639"
|
||||
telnetDemo := "metric_telnet 1707095283260 4 host=host0 interface=eth0"
|
||||
jsonDemo := "{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}"
|
||||
|
||||
db, err := sql.Open("taosWS", fmt.Sprintf("root:taosdata@ws(%s:6041)/", host))
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer db.Close()
|
||||
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
s, err := schemaless.NewSchemaless(schemaless.NewConfig("ws://localhost:6041", 1,
|
||||
schemaless.SetDb("power"),
|
||||
schemaless.SetReadTimeout(10*time.Second),
|
||||
schemaless.SetWriteTimeout(10*time.Second),
|
||||
schemaless.SetUser("root"),
|
||||
schemaless.SetPassword("taosdata"),
|
||||
))
|
||||
if err != nil {
|
||||
log.Fatal("failed to create schemaless connection, err:", err)
|
||||
}
|
||||
// insert influxdb line protocol
|
||||
err = s.Insert(lineDemo, schemaless.InfluxDBLineProtocol, "ms", 0, common.GetReqID())
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert influxdb line protocol, err:", err)
|
||||
}
|
||||
// insert opentsdb telnet line protocol
|
||||
err = s.Insert(telnetDemo, schemaless.OpenTSDBTelnetLineProtocol, "ms", 0, common.GetReqID())
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert opentsdb telnet line protocol, err:", err)
|
||||
}
|
||||
// insert opentsdb json format protocol
|
||||
err = s.Insert(jsonDemo, schemaless.OpenTSDBJsonFormatProtocol, "s", 0, common.GetReqID())
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert opentsdb json format protocol, err:", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,89 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
|
||||
func main() {
|
||||
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
|
||||
if err != nil {
|
||||
log.Fatal("open database failed:", err)
|
||||
}
|
||||
defer db.Close()
|
||||
// ANCHOR: create_db_and_table
|
||||
// create database
|
||||
res, err := db.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("create database failed:", err)
|
||||
}
|
||||
affected, err := res.RowsAffected()
|
||||
if err != nil {
|
||||
log.Fatal("get affected rows failed:", err)
|
||||
}
|
||||
fmt.Println("create database affected:", affected)
|
||||
// use database
|
||||
res, err = db.Exec("USE power")
|
||||
if err != nil {
|
||||
log.Fatal("use database failed:", err)
|
||||
}
|
||||
affected, err = res.RowsAffected()
|
||||
if err != nil {
|
||||
log.Fatal("get affected rows failed:", err)
|
||||
}
|
||||
fmt.Println("use database affected:", affected)
|
||||
// create table
|
||||
res, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
affected, err = res.RowsAffected()
|
||||
if err != nil {
|
||||
log.Fatal("create table failed:", err)
|
||||
}
|
||||
fmt.Println("create table affected:", affected)
|
||||
// ANCHOR_END: create_db_and_table
|
||||
// ANCHOR: insert_data
|
||||
// insert data, please make sure the database and table are created before
|
||||
insertQuery := "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) "
|
||||
res, err = db.Exec(insertQuery)
|
||||
if err != nil {
|
||||
log.Fatal("insert data failed:", err)
|
||||
}
|
||||
affected, err = res.RowsAffected()
|
||||
if err != nil {
|
||||
log.Fatal("get affected rows failed:", err)
|
||||
}
|
||||
// you can check affectedRows here
|
||||
fmt.Println("insert data affected:", affected)
|
||||
// ANCHOR_END: insert_data
|
||||
// ANCHOR: select_data
|
||||
// query data, make sure the database and table are created before
|
||||
rows, err := db.Query("SELECT ts, current, location FROM power.meters limit 100")
|
||||
if err != nil {
|
||||
log.Fatal("query data failed:", err)
|
||||
}
|
||||
for rows.Next() {
|
||||
var (
|
||||
ts time.Time
|
||||
current float32
|
||||
location string
|
||||
)
|
||||
err = rows.Scan(&ts, ¤t, &location)
|
||||
if err != nil {
|
||||
log.Fatal("scan data failed:", err)
|
||||
}
|
||||
// you can check data here
|
||||
fmt.Printf("ts: %s, current: %f, location: %s\n", ts, current, location)
|
||||
}
|
||||
// ANCHOR_END: select_data
|
||||
}
|
||||
|
|
@ -0,0 +1,83 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"math/rand"
|
||||
"time"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/af"
|
||||
"github.com/taosdata/driver-go/v3/common"
|
||||
"github.com/taosdata/driver-go/v3/common/param"
|
||||
)
|
||||
|
||||
func main() {
|
||||
host := "127.0.0.1"
|
||||
numOfSubTable := 10
|
||||
numOfRow := 10
|
||||
db, err := af.Open(host, "root", "taosdata", "", 0)
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer db.Close()
|
||||
// prepare database and table
|
||||
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
_, err = db.Exec("USE power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to use database, err:", err)
|
||||
}
|
||||
_, err = db.Exec("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create table, err:", err)
|
||||
}
|
||||
// prepare statement
|
||||
sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)"
|
||||
stmt := db.Stmt()
|
||||
err = stmt.Prepare(sql)
|
||||
if err != nil {
|
||||
log.Fatal("failed to prepare statement, err:", err)
|
||||
}
|
||||
for i := 1; i <= numOfSubTable; i++ {
|
||||
tableName := fmt.Sprintf("d_bind_%d", i)
|
||||
tags := param.NewParam(2).AddInt(i).AddBinary([]byte(fmt.Sprintf("location_%d", i)))
|
||||
// set tableName and tags
|
||||
err = stmt.SetTableNameWithTags(tableName, tags)
|
||||
if err != nil {
|
||||
log.Fatal("failed to set table name and tags, err:", err)
|
||||
}
|
||||
// bind column data
|
||||
current := time.Now()
|
||||
for j := 0; j < numOfRow; j++ {
|
||||
row := param.NewParam(4).
|
||||
AddTimestamp(current.Add(time.Millisecond*time.Duration(j)), common.PrecisionMilliSecond).
|
||||
AddFloat(rand.Float32() * 30).
|
||||
AddInt(rand.Intn(300)).
|
||||
AddFloat(rand.Float32())
|
||||
err = stmt.BindRow(row)
|
||||
if err != nil {
|
||||
log.Fatal("failed to bind row, err:", err)
|
||||
}
|
||||
}
|
||||
// add batch
|
||||
err = stmt.AddBatch()
|
||||
if err != nil {
|
||||
log.Fatal("failed to add batch, err:", err)
|
||||
}
|
||||
// execute batch
|
||||
err = stmt.Execute()
|
||||
if err != nil {
|
||||
log.Fatal("failed to execute batch, err:", err)
|
||||
}
|
||||
// get affected rows
|
||||
affected := stmt.GetAffectedRows()
|
||||
// you can check exeResult here
|
||||
fmt.Printf("table %s insert %d rows.\n", tableName, affected)
|
||||
}
|
||||
err = stmt.Close()
|
||||
if err != nil {
|
||||
log.Fatal("failed to close statement, err:", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,103 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"math/rand"
|
||||
"time"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/common"
|
||||
"github.com/taosdata/driver-go/v3/common/param"
|
||||
_ "github.com/taosdata/driver-go/v3/taosRestful"
|
||||
"github.com/taosdata/driver-go/v3/ws/stmt"
|
||||
)
|
||||
|
||||
func main() {
|
||||
host := "127.0.0.1"
|
||||
numOfSubTable := 10
|
||||
numOfRow := 10
|
||||
db, err := sql.Open("taosRestful", fmt.Sprintf("root:taosdata@http(%s:6041)/", host))
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer db.Close()
|
||||
// prepare database and table
|
||||
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
_, err = db.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create table, err:", err)
|
||||
}
|
||||
|
||||
config := stmt.NewConfig(fmt.Sprintf("ws://%s:6041", host), 0)
|
||||
config.SetConnectUser("root")
|
||||
config.SetConnectPass("taosdata")
|
||||
config.SetConnectDB("power")
|
||||
config.SetMessageTimeout(common.DefaultMessageTimeout)
|
||||
config.SetWriteWait(common.DefaultWriteWait)
|
||||
|
||||
connector, err := stmt.NewConnector(config)
|
||||
if err != nil {
|
||||
log.Fatal("failed to create stmt connector, err:", err)
|
||||
}
|
||||
// prepare statement
|
||||
sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)"
|
||||
stmt, err := connector.Init()
|
||||
if err != nil {
|
||||
log.Fatal("failed to init stmt, err:", err)
|
||||
}
|
||||
err = stmt.Prepare(sql)
|
||||
if err != nil {
|
||||
log.Fatal("failed to prepare stmt, err:", err)
|
||||
}
|
||||
for i := 1; i <= numOfSubTable; i++ {
|
||||
tableName := fmt.Sprintf("d_bind_%d", i)
|
||||
tags := param.NewParam(2).AddInt(i).AddBinary([]byte(fmt.Sprintf("location_%d", i)))
|
||||
tagsType := param.NewColumnType(2).AddInt().AddBinary(24)
|
||||
columnType := param.NewColumnType(4).AddTimestamp().AddFloat().AddInt().AddFloat()
|
||||
// set tableName
|
||||
err = stmt.SetTableName(tableName)
|
||||
if err != nil {
|
||||
log.Fatal("failed to set table name, err:", err)
|
||||
}
|
||||
// set tags
|
||||
err = stmt.SetTags(tags, tagsType)
|
||||
if err != nil {
|
||||
log.Fatal("failed to set tags, err:", err)
|
||||
}
|
||||
// bind column data
|
||||
current := time.Now()
|
||||
for j := 0; j < numOfRow; j++ {
|
||||
columnData := make([]*param.Param, 4)
|
||||
columnData[0] = param.NewParam(1).AddTimestamp(current.Add(time.Millisecond*time.Duration(j)), common.PrecisionMilliSecond)
|
||||
columnData[1] = param.NewParam(1).AddFloat(rand.Float32() * 30)
|
||||
columnData[2] = param.NewParam(1).AddInt(rand.Intn(300))
|
||||
columnData[3] = param.NewParam(1).AddFloat(rand.Float32())
|
||||
err = stmt.BindParam(columnData, columnType)
|
||||
if err != nil {
|
||||
log.Fatal("failed to bind param, err:", err)
|
||||
}
|
||||
}
|
||||
// add batch
|
||||
err = stmt.AddBatch()
|
||||
if err != nil {
|
||||
log.Fatal("failed to add batch, err:", err)
|
||||
}
|
||||
// execute batch
|
||||
err = stmt.Exec()
|
||||
if err != nil {
|
||||
log.Fatal("failed to exec stmt, err:", err)
|
||||
}
|
||||
// get affected rows
|
||||
affected := stmt.GetAffectedRows()
|
||||
// you can check exeResult here
|
||||
fmt.Printf("table %s insert %d rows.\n", tableName, affected)
|
||||
}
|
||||
err = stmt.Close()
|
||||
if err != nil {
|
||||
log.Fatal("failed to close stmt, err:", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,153 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/af/tmq"
|
||||
tmqcommon "github.com/taosdata/driver-go/v3/common/tmq"
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
|
||||
var done = make(chan struct{})
|
||||
|
||||
func main() {
|
||||
// init env
|
||||
conn, err := sql.Open("taosSql", "root:taosdata@tcp(127.0.0.1:6030)/")
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer func() {
|
||||
conn.Close()
|
||||
}()
|
||||
initEnv(conn)
|
||||
// ANCHOR: create_consumer
|
||||
// create consumer
|
||||
consumer, err := tmq.NewConsumer(&tmqcommon.ConfigMap{
|
||||
"td.connect.user": "root",
|
||||
"td.connect.pass": "taosdata",
|
||||
"auto.offset.reset": "latest",
|
||||
"msg.with.table.name": "true",
|
||||
"enable.auto.commit": "true",
|
||||
"auto.commit.interval.ms": "1000",
|
||||
"group.id": "group1",
|
||||
"client.id": "client1",
|
||||
})
|
||||
if err != nil {
|
||||
log.Fatal("failed to create consumer, err:", err)
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
// ANCHOR: subscribe
|
||||
err = consumer.Subscribe("topic_meters", nil)
|
||||
if err != nil {
|
||||
log.Fatal("failed to subscribe, err:", err)
|
||||
}
|
||||
for i := 0; i < 50; i++ {
|
||||
ev := consumer.Poll(100)
|
||||
if ev != nil {
|
||||
switch e := ev.(type) {
|
||||
case *tmqcommon.DataMessage:
|
||||
// process your data here
|
||||
fmt.Printf("data:%v\n", e)
|
||||
// ANCHOR: commit_offset
|
||||
// commit offset
|
||||
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
|
||||
if err != nil {
|
||||
log.Fatal("failed to commit offset, err:", err)
|
||||
}
|
||||
fmt.Println(topicPartition)
|
||||
// ANCHOR_END: commit_offset
|
||||
case tmqcommon.Error:
|
||||
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
|
||||
log.Fatal("failed to get message, err:", e)
|
||||
}
|
||||
// commit all offsets
|
||||
topicPartition, err := consumer.Commit()
|
||||
if err != nil {
|
||||
log.Fatal("failed to commit, err:", err)
|
||||
}
|
||||
fmt.Println(topicPartition)
|
||||
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
// ANCHOR: seek
|
||||
// get assignment
|
||||
partitions, err := consumer.Assignment()
|
||||
if err != nil {
|
||||
log.Fatal("failed to get assignment, err:", err)
|
||||
}
|
||||
for i := 0; i < len(partitions); i++ {
|
||||
fmt.Println(partitions[i])
|
||||
// seek to the beginning
|
||||
err = consumer.Seek(tmqcommon.TopicPartition{
|
||||
Topic: partitions[i].Topic,
|
||||
Partition: partitions[i].Partition,
|
||||
Offset: 0,
|
||||
}, 0)
|
||||
if err != nil {
|
||||
log.Fatal("failed to seek, err:", err)
|
||||
}
|
||||
}
|
||||
fmt.Println("assignment seek to beginning successfully")
|
||||
// poll data again
|
||||
gotData := false
|
||||
for i := 0; i < 50; i++ {
|
||||
if gotData {
|
||||
break
|
||||
}
|
||||
ev := consumer.Poll(100)
|
||||
if ev != nil {
|
||||
switch e := ev.(type) {
|
||||
case *tmqcommon.DataMessage:
|
||||
// process your data here
|
||||
fmt.Printf("second data polled:%v\n", e)
|
||||
gotData = true
|
||||
case tmqcommon.Error:
|
||||
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
|
||||
log.Fatal("failed to get message, err:", e)
|
||||
}
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: seek
|
||||
// ANCHOR: close
|
||||
// unsubscribe
|
||||
err = consumer.Unsubscribe()
|
||||
if err != nil {
|
||||
log.Fatal("failed to unsubscribe, err:", err)
|
||||
}
|
||||
// close consumer
|
||||
err = consumer.Close()
|
||||
if err != nil {
|
||||
log.Fatal("failed to close consumer, err:", err)
|
||||
}
|
||||
// ANCHOR_END: close
|
||||
<-done
|
||||
}
|
||||
|
||||
func initEnv(conn *sql.DB) {
|
||||
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create stable, err:", err)
|
||||
}
|
||||
_, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create topic, err:", err)
|
||||
}
|
||||
go func() {
|
||||
for i := 0; i < 10; i++ {
|
||||
time.Sleep(time.Second)
|
||||
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert data, err:", err)
|
||||
}
|
||||
}
|
||||
done <- struct{}{}
|
||||
}()
|
||||
}
|
||||
|
|
@ -0,0 +1,158 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"github.com/taosdata/driver-go/v3/common"
|
||||
tmqcommon "github.com/taosdata/driver-go/v3/common/tmq"
|
||||
_ "github.com/taosdata/driver-go/v3/taosWS"
|
||||
"github.com/taosdata/driver-go/v3/ws/tmq"
|
||||
)
|
||||
|
||||
var done = make(chan struct{})
|
||||
|
||||
func main() {
|
||||
// init env
|
||||
conn, err := sql.Open("taosWS", "root:taosdata@ws(127.0.0.1:6041)/")
|
||||
if err != nil {
|
||||
log.Fatal("failed to connect TDengine, err:", err)
|
||||
}
|
||||
defer func() {
|
||||
conn.Close()
|
||||
}()
|
||||
initEnv(conn)
|
||||
// ANCHOR: create_consumer
|
||||
// create consumer
|
||||
consumer, err := tmq.NewConsumer(&tmqcommon.ConfigMap{
|
||||
"ws.url": "ws://127.0.0.1:6041",
|
||||
"ws.message.channelLen": uint(0),
|
||||
"ws.message.timeout": common.DefaultMessageTimeout,
|
||||
"ws.message.writeWait": common.DefaultWriteWait,
|
||||
"td.connect.user": "root",
|
||||
"td.connect.pass": "taosdata",
|
||||
"auto.offset.reset": "latest",
|
||||
"msg.with.table.name": "true",
|
||||
"enable.auto.commit": "true",
|
||||
"auto.commit.interval.ms": "1000",
|
||||
"group.id": "group1",
|
||||
"client.id": "client1",
|
||||
})
|
||||
if err != nil {
|
||||
log.Fatal("failed to create consumer, err:", err)
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
// ANCHOR: subscribe
|
||||
err = consumer.Subscribe("topic_meters", nil)
|
||||
if err != nil {
|
||||
log.Fatal("failed to subscribe, err:", err)
|
||||
}
|
||||
for i := 0; i < 50; i++ {
|
||||
ev := consumer.Poll(100)
|
||||
if ev != nil {
|
||||
switch e := ev.(type) {
|
||||
case *tmqcommon.DataMessage:
|
||||
// process your data here
|
||||
fmt.Printf("data:%v\n", e)
|
||||
// ANCHOR: commit_offset
|
||||
// commit offset
|
||||
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
|
||||
if err != nil {
|
||||
log.Fatal("failed to commit offset, err:", err)
|
||||
}
|
||||
fmt.Println(topicPartition)
|
||||
// ANCHOR_END: commit_offset
|
||||
case tmqcommon.Error:
|
||||
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
|
||||
log.Fatal("failed to get message, err:", e)
|
||||
}
|
||||
// commit all offsets
|
||||
topicPartition, err := consumer.Commit()
|
||||
if err != nil {
|
||||
log.Fatal("failed to commit, err:", err)
|
||||
}
|
||||
fmt.Println(topicPartition)
|
||||
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
// ANCHOR: seek
|
||||
// get assignment
|
||||
partitions, err := consumer.Assignment()
|
||||
if err != nil {
|
||||
log.Fatal("failed to get assignment, err:", err)
|
||||
}
|
||||
for i := 0; i < len(partitions); i++ {
|
||||
fmt.Println(partitions[i])
|
||||
// seek to the beginning
|
||||
err = consumer.Seek(tmqcommon.TopicPartition{
|
||||
Topic: partitions[i].Topic,
|
||||
Partition: partitions[i].Partition,
|
||||
Offset: 0,
|
||||
}, 0)
|
||||
if err != nil {
|
||||
log.Fatal("failed to seek, err:", err)
|
||||
}
|
||||
}
|
||||
fmt.Println("assignment seek to beginning successfully")
|
||||
// poll data again
|
||||
gotData := false
|
||||
for i := 0; i < 50; i++ {
|
||||
if gotData {
|
||||
break
|
||||
}
|
||||
ev := consumer.Poll(100)
|
||||
if ev != nil {
|
||||
switch e := ev.(type) {
|
||||
case *tmqcommon.DataMessage:
|
||||
// process your data here
|
||||
fmt.Printf("second data polled:%v\n", e)
|
||||
gotData = true
|
||||
case tmqcommon.Error:
|
||||
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
|
||||
log.Fatal("failed to get message, err:", e)
|
||||
}
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: seek
|
||||
// ANCHOR: close
|
||||
// unsubscribe
|
||||
err = consumer.Unsubscribe()
|
||||
if err != nil {
|
||||
log.Fatal("failed to unsubscribe, err:", err)
|
||||
}
|
||||
// close consumer
|
||||
err = consumer.Close()
|
||||
if err != nil {
|
||||
log.Fatal("failed to close consumer, err:", err)
|
||||
}
|
||||
// ANCHOR_END: close
|
||||
<-done
|
||||
}
|
||||
|
||||
func initEnv(conn *sql.DB) {
|
||||
_, err := conn.Exec("CREATE DATABASE IF NOT EXISTS power")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create database, err:", err)
|
||||
}
|
||||
_, err = conn.Exec("CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create stable, err:", err)
|
||||
}
|
||||
_, err = conn.Exec("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters")
|
||||
if err != nil {
|
||||
log.Fatal("failed to create topic, err:", err)
|
||||
}
|
||||
go func() {
|
||||
for i := 0; i < 10; i++ {
|
||||
time.Sleep(time.Second)
|
||||
_, err = conn.Exec("INSERT INTO power.d1001 USING power.meters TAGS (2, 'California.SanFrancisco') VALUES (NOW , 10.2, 219, 0.32)")
|
||||
if err != nil {
|
||||
log.Fatal("failed to insert data, err:", err)
|
||||
}
|
||||
}
|
||||
done <- struct{}{}
|
||||
}()
|
||||
}
|
||||
|
|
@ -27,6 +27,10 @@ public static void main(String[] args) throws SQLException {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
|
|
|
|||
|
|
@ -16,6 +16,10 @@ public static void main(String[] args) throws SQLException {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
|
|
|
|||
|
|
@ -28,6 +28,10 @@ public static void main(String[] args) throws SQLException {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to connect to " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: main
|
||||
|
|
|
|||
|
|
@ -2,13 +2,13 @@ const taos = require("@tdengine/websocket");
|
|||
|
||||
let db = 'power';
|
||||
let stable = 'meters';
|
||||
let tags = ['California.SanFrancisco', 3];
|
||||
let values = [
|
||||
[1706786044994, 1706786044995, 1706786044996],
|
||||
[10.2, 10.3, 10.4],
|
||||
[292, 293, 294],
|
||||
[0.32, 0.33, 0.34],
|
||||
];
|
||||
let numOfSubTable = 10;
|
||||
let numOfRow = 10;
|
||||
function getRandomInt(min, max) {
|
||||
min = Math.ceil(min);
|
||||
max = Math.floor(max);
|
||||
return Math.floor(Math.random() * (max - min + 1)) + min;
|
||||
}
|
||||
|
||||
async function prepare() {
|
||||
let dsn = 'ws://localhost:6041'
|
||||
|
|
@ -29,24 +29,36 @@ async function prepare() {
|
|||
connector = await prepare();
|
||||
stmt = await connector.stmtInit();
|
||||
await stmt.prepare(`INSERT INTO ? USING ${db}.${stable} (location, groupId) TAGS (?, ?) VALUES (?, ?, ?, ?)`);
|
||||
await stmt.setTableName('d1001');
|
||||
let tagParams = stmt.newStmtParam();
|
||||
tagParams.setVarchar([tags[0]]);
|
||||
tagParams.setInt([tags[1]]);
|
||||
await stmt.setTags(tagParams);
|
||||
|
||||
let bindParams = stmt.newStmtParam();
|
||||
bindParams.setTimestamp(values[0]);
|
||||
bindParams.setFloat(values[1]);
|
||||
bindParams.setInt(values[2]);
|
||||
bindParams.setFloat(values[3]);
|
||||
await stmt.bind(bindParams);
|
||||
await stmt.batch();
|
||||
await stmt.exec();
|
||||
console.log(stmt.getLastAffected());
|
||||
for (let i = 0; i < numOfSubTable; i++) {
|
||||
await stmt.setTableName(`d_bind_${i}`);
|
||||
let tagParams = stmt.newStmtParam();
|
||||
tagParams.setVarchar([`location_${i}`]);
|
||||
tagParams.setInt([i]);
|
||||
await stmt.setTags(tagParams);
|
||||
let timestampParams = [];
|
||||
let currentParams = [];
|
||||
let voltageParams = [];
|
||||
let phaseParams = [];
|
||||
const currentMillis = new Date().getTime();
|
||||
for (let j = 0; j < numOfRow; j++) {
|
||||
timestampParams.push(currentMillis + j);
|
||||
currentParams.push(Math.random() * 30);
|
||||
voltageParams.push(getRandomInt(100, 300));
|
||||
phaseParams.push(Math.random());
|
||||
}
|
||||
let bindParams = stmt.newStmtParam();
|
||||
bindParams.setTimestamp(timestampParams);
|
||||
bindParams.setFloat(currentParams);
|
||||
bindParams.setInt(voltageParams);
|
||||
bindParams.setFloat(phaseParams);
|
||||
await stmt.bind(bindParams);
|
||||
await stmt.batch();
|
||||
await stmt.exec();
|
||||
console.log(`d_bind_${i} insert ` + stmt.getLastAffected() + " rows.");
|
||||
}
|
||||
}
|
||||
catch (err) {
|
||||
console.error(err.code, err.message);
|
||||
catch (e) {
|
||||
console.error(e);
|
||||
}
|
||||
finally {
|
||||
if (stmt) {
|
||||
|
|
|
|||
|
|
@ -7,24 +7,30 @@ const topics = ['power_meters_topic'];
|
|||
// ANCHOR: create_consumer
|
||||
async function createConsumer() {
|
||||
let configMap = new Map([
|
||||
[taos.TMQConstants.GROUP_ID, "gId"],
|
||||
[taos.TMQConstants.GROUP_ID, "group1"],
|
||||
[taos.TMQConstants.CLIENT_ID, 'client1'],
|
||||
[taos.TMQConstants.CONNECT_USER, "root"],
|
||||
[taos.TMQConstants.CONNECT_PASS, "taosdata"],
|
||||
[taos.TMQConstants.AUTO_OFFSET_RESET, "latest"],
|
||||
[taos.TMQConstants.CLIENT_ID, 'test_tmq_client'],
|
||||
[taos.TMQConstants.WS_URL, 'ws://localhost:6041'],
|
||||
[taos.TMQConstants.ENABLE_AUTO_COMMIT, 'true'],
|
||||
[taos.TMQConstants.AUTO_COMMIT_INTERVAL_MS, '1000']
|
||||
]);
|
||||
return await taos.tmqConnect(configMap);
|
||||
try {
|
||||
return await taos.tmqConnect(configMap);
|
||||
}catch (err) {
|
||||
console.log(err);
|
||||
throw err;
|
||||
}
|
||||
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
|
||||
async function prepare() {
|
||||
let conf = new taos.WSConfig('ws://localhost:6041');
|
||||
conf.setUser('root')
|
||||
conf.setPwd('taosdata')
|
||||
conf.setDb('power')
|
||||
conf.setUser('root');
|
||||
conf.setPwd('taosdata');
|
||||
conf.setDb('power');
|
||||
const createDB = `CREATE DATABASE IF NOT EXISTS POWER ${db} KEEP 3650 DURATION 10 BUFFER 16 WAL_LEVEL 1;`;
|
||||
const createStable = `CREATE STABLE IF NOT EXISTS ${db}.${stable} (ts timestamp, current float, voltage int, phase float) TAGS (location binary(64), groupId int);`;
|
||||
|
||||
|
|
@ -32,10 +38,9 @@ async function prepare() {
|
|||
await wsSql.exec(createDB);
|
||||
await wsSql.exec(createStable);
|
||||
|
||||
// ANCHOR: create_topic
|
||||
let createTopic = `CREATE TOPIC IF NOT EXISTS ${topics[0]} AS SELECT * FROM ${db}.${stable}`;
|
||||
await wsSql.exec(createTopic);
|
||||
// ANCHOR_END: create_topic
|
||||
let createTopic = `CREATE TOPIC IF NOT EXISTS ${topics[0]} AS SELECT * FROM ${db}.${stable}`;
|
||||
await wsSql.exec(createTopic);
|
||||
|
||||
|
||||
for (let i = 0; i < 10; i++) {
|
||||
await wsSql.exec(`INSERT INTO d1001 USING ${stable} (location, groupId) TAGS ("California.SanFrancisco", 3) VALUES (NOW, ${10 + i}, ${200 + i}, ${0.32 + i})`);
|
||||
|
|
@ -43,37 +48,31 @@ await wsSql.exec(createTopic);
|
|||
wsSql.Close();
|
||||
}
|
||||
|
||||
// ANCHOR: subscribe
|
||||
async function subscribe(consumer) {
|
||||
await consumer.subscribe(topics);
|
||||
for (let i = 0; i < 5; i++) {
|
||||
let res = await consumer.poll(500);
|
||||
for (let [key, value] of res) {
|
||||
console.log(key, value);
|
||||
}
|
||||
if (res.size == 0) {
|
||||
break;
|
||||
}
|
||||
await consumer.commit();
|
||||
// ANCHOR: commit
|
||||
try {
|
||||
await consumer.subscribe(['topic_meters']);
|
||||
for (let i = 0; i < 50; i++) {
|
||||
let res = await consumer.poll(100);
|
||||
for (let [key, value] of res) {
|
||||
console.log(key, value);
|
||||
}
|
||||
consumer.commit();
|
||||
}
|
||||
} catch (err) {
|
||||
console.error(err.code, err.message);
|
||||
throw err;
|
||||
}
|
||||
// ANCHOR_END: commit
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
|
||||
async function test() {
|
||||
// ANCHOR: unsubscribe
|
||||
let consumer = null;
|
||||
try {
|
||||
await prepare();
|
||||
let consumer = await createConsumer()
|
||||
await subscribe(consumer)
|
||||
// ANCHOR: assignment
|
||||
let assignment = await consumer.assignment();
|
||||
console.log(assignment);
|
||||
|
||||
assignment = await consumer.seekToBeginning(assignment);
|
||||
for(let i in assignment) {
|
||||
console.log("seek after:", assignment[i])
|
||||
}
|
||||
// ANCHOR_END: assignment
|
||||
await subscribe(consumer)
|
||||
await consumer.unsubscribe();
|
||||
}
|
||||
catch (err) {
|
||||
|
|
@ -85,6 +84,7 @@ async function test() {
|
|||
}
|
||||
taos.destroy();
|
||||
}
|
||||
// ANCHOR_END: unsubscribe
|
||||
}
|
||||
|
||||
test()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,104 @@
|
|||
const taos = require("@tdengine/websocket");
|
||||
|
||||
const db = 'power';
|
||||
const stable = 'meters';
|
||||
const topics = ['power_meters_topic'];
|
||||
|
||||
// ANCHOR: create_consumer
|
||||
async function createConsumer() {
|
||||
let configMap = new Map([
|
||||
[taos.TMQConstants.GROUP_ID, "group1"],
|
||||
[taos.TMQConstants.CLIENT_ID, 'client1'],
|
||||
[taos.TMQConstants.CONNECT_USER, "root"],
|
||||
[taos.TMQConstants.CONNECT_PASS, "taosdata"],
|
||||
[taos.TMQConstants.AUTO_OFFSET_RESET, "latest"],
|
||||
[taos.TMQConstants.WS_URL, 'ws://localhost:6041'],
|
||||
[taos.TMQConstants.ENABLE_AUTO_COMMIT, 'true'],
|
||||
[taos.TMQConstants.AUTO_COMMIT_INTERVAL_MS, '1000']
|
||||
]);
|
||||
try {
|
||||
return await taos.tmqConnect(configMap);
|
||||
}catch (err) {
|
||||
console.log(err);
|
||||
throw err;
|
||||
}
|
||||
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
|
||||
async function prepare() {
|
||||
let conf = new taos.WSConfig('ws://localhost:6041');
|
||||
conf.setUser('root');
|
||||
conf.setPwd('taosdata');
|
||||
conf.setDb('power');
|
||||
const createDB = `CREATE DATABASE IF NOT EXISTS POWER ${db} KEEP 3650 DURATION 10 BUFFER 16 WAL_LEVEL 1;`;
|
||||
const createStable = `CREATE STABLE IF NOT EXISTS ${db}.${stable} (ts timestamp, current float, voltage int, phase float) TAGS (location binary(64), groupId int);`;
|
||||
|
||||
let wsSql = await taos.sqlConnect(conf);
|
||||
await wsSql.exec(createDB);
|
||||
await wsSql.exec(createStable);
|
||||
|
||||
let createTopic = `CREATE TOPIC IF NOT EXISTS ${topics[0]} AS SELECT * FROM ${db}.${stable}`;
|
||||
await wsSql.exec(createTopic);
|
||||
|
||||
|
||||
for (let i = 0; i < 10; i++) {
|
||||
await wsSql.exec(`INSERT INTO d1001 USING ${stable} (location, groupId) TAGS ("California.SanFrancisco", 3) VALUES (NOW, ${10 + i}, ${200 + i}, ${0.32 + i})`);
|
||||
}
|
||||
wsSql.Close();
|
||||
}
|
||||
|
||||
// ANCHOR: subscribe
|
||||
async function subscribe(consumer) {
|
||||
try {
|
||||
await consumer.subscribe(['topic_meters']);
|
||||
for (let i = 0; i < 50; i++) {
|
||||
let res = await consumer.poll(100);
|
||||
for (let [key, value] of res) {
|
||||
console.log(key, value);
|
||||
}
|
||||
}
|
||||
}catch (err) {
|
||||
console.error(err.code, err.message);
|
||||
throw err;
|
||||
}
|
||||
|
||||
}
|
||||
// ANCHOR_END: subscribe
|
||||
|
||||
// ANCHOR: offset
|
||||
async function test() {
|
||||
let consumer = null;
|
||||
try {
|
||||
await prepare();
|
||||
let consumer = await createConsumer()
|
||||
await consumer.subscribe(['topic_meters']);
|
||||
let res = new Map();
|
||||
while (res.size == 0) {
|
||||
res = await consumer.poll(100);
|
||||
}
|
||||
|
||||
let assignment = await consumer.assignment();
|
||||
for (let i in assignment) {
|
||||
console.log("seek before:", assignment[i]);
|
||||
}
|
||||
|
||||
await consumer.seekToBeginning(assignment);
|
||||
assignment = await consumer.assignment();
|
||||
for (let i in assignment) {
|
||||
console.log("seek after:", assignment[i]);
|
||||
}
|
||||
await consumer.unsubscribe();
|
||||
}
|
||||
catch (err) {
|
||||
console.error(err.code, err.message);
|
||||
}
|
||||
finally {
|
||||
if (consumer) {
|
||||
await consumer.close();
|
||||
}
|
||||
taos.destroy();
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: offset
|
||||
test()
|
||||
|
|
@ -4,14 +4,14 @@ def create_connection():
|
|||
# all parameters are optional.
|
||||
conn = None
|
||||
try:
|
||||
conn = taosws.connect(
|
||||
conn = taos.connect(
|
||||
user="root",
|
||||
password="taosdata",
|
||||
host="192.168.1.98",
|
||||
host="localhost",
|
||||
port=6041,
|
||||
)
|
||||
except Exception as err:
|
||||
print(f'Exception {err}')
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,20 @@
|
|||
# ANCHOR: connect
|
||||
import taosrest
|
||||
|
||||
def create_connection():
|
||||
conn = None
|
||||
try:
|
||||
conn = taosrest.connect(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
# ANCHOR_END: connect
|
||||
|
||||
if __name__ == "__main__":
|
||||
create_connection()
|
||||
|
||||
|
|
@ -1,11 +1,12 @@
|
|||
# ANCHOR: connect
|
||||
from taosrest import connect, TaosRestConnection, TaosRestCursor
|
||||
|
||||
conn = connect(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
|
||||
conn = connect(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
|
||||
# ANCHOR_END: connect
|
||||
# ANCHOR: basic
|
||||
# create STable
|
||||
|
|
|
|||
|
|
@ -1,8 +1,8 @@
|
|||
# ANCHOR: connect
|
||||
import taosws
|
||||
|
||||
def create_connection():
|
||||
conn = None
|
||||
# ANCHOR: connect
|
||||
try:
|
||||
conn = taosws.connect(
|
||||
user="root",
|
||||
|
|
@ -11,9 +11,10 @@ def create_connection():
|
|||
port=6041,
|
||||
)
|
||||
except Exception as err:
|
||||
print(f'Exception {err}')
|
||||
# ANCHOR_END: connect
|
||||
print(err)
|
||||
|
||||
return conn
|
||||
# ANCHOR_END: connect
|
||||
|
||||
def create_db_table(conn):
|
||||
# ANCHOR: create_db
|
||||
|
|
@ -21,12 +22,13 @@ def create_db_table(conn):
|
|||
conn.execute("CREATE DATABASE IF NOT EXISTS power")
|
||||
conn.execute("USE power")
|
||||
conn.execute("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))")
|
||||
conn.execute("CREATE TABLE `d0` USING `meters` TAGS(0, 'Los Angles')")
|
||||
conn.execute("CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupId, location) TAGS(0, 'Los Angles')")
|
||||
except Exception as err:
|
||||
print(f'Exception {err}')
|
||||
# ANCHOR_END: create_db
|
||||
|
||||
def insert(conn):
|
||||
def insert(conn):
|
||||
# ANCHOR: insert
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters TAGS('California.SanFrancisco', 2)
|
||||
|
|
@ -39,18 +41,26 @@ def insert(conn):
|
|||
inserted = conn.execute(sql)
|
||||
assert inserted == 8
|
||||
except Exception as err:
|
||||
print(f'Exception {err}')
|
||||
print(f'Exception111 {err}')
|
||||
# ANCHOR_END: insert
|
||||
|
||||
def query(conn):
|
||||
result = conn.query("select * from stb")
|
||||
num_of_fields = result.field_count
|
||||
print(num_of_fields)
|
||||
# ANCHOR: query
|
||||
try:
|
||||
result = conn.query("select * from meters")
|
||||
num_of_fields = result.field_count
|
||||
print(num_of_fields)
|
||||
|
||||
for row in result:
|
||||
print(row)
|
||||
for row in result:
|
||||
print(row)
|
||||
except Exception as err:
|
||||
print(f'Exception {err}')
|
||||
# ANCHOR_END: query
|
||||
|
||||
# output:
|
||||
# 3
|
||||
# ('2023-02-28 15:56:13.329 +08:00', 1, 1)
|
||||
# ('2023-02-28 15:56:13.333 +08:00', 2, 1)
|
||||
# ('2023-02-28 15:56:13.337 +08:00', 3, 1)
|
||||
if __name__ == "__main__":
|
||||
conn = create_connection()
|
||||
create_db_table(conn)
|
||||
insert(conn)
|
||||
query(conn)
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,26 +1,33 @@
|
|||
import taos
|
||||
|
||||
conn = taos.connect(
|
||||
host="localhost",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
port=6030,
|
||||
)
|
||||
conn = None
|
||||
try:
|
||||
conn = taos.connect(host="localhost",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
port=6030)
|
||||
|
||||
db = "power"
|
||||
db = "power"
|
||||
# create database
|
||||
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
|
||||
assert rowsAffected == 0
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
# change database. same as execute "USE db"
|
||||
rowsAffected = conn.select_db(db)
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create super table
|
||||
rowsAffected = conn.execute(
|
||||
"CREATE TABLE IF NOT EXISTS `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
assert rowsAffected == 0
|
||||
|
||||
# change database. same as execute "USE db"
|
||||
conn.select_db(db)
|
||||
# create table
|
||||
rowsAffected = conn.execute("CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupid, location) TAGS(0, 'Los Angles')")
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
"CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
|
||||
# create table
|
||||
conn.execute("CREATE TABLE `d0` USING `meters` TAGS(0, 'Los Angles')")
|
||||
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,18 +1,28 @@
|
|||
import taosrest
|
||||
|
||||
conn = taosrest.connect(url="http://localhost:6041")
|
||||
conn = None
|
||||
try:
|
||||
conn = taosrest.connect(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
|
||||
db = "power"
|
||||
db = "power"
|
||||
# create database
|
||||
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
|
||||
assert rowsAffected == 0
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
# create super table
|
||||
rowsAffected = conn.execute(
|
||||
f"CREATE TABLE IF NOT EXISTS `{db}`.`meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
assert rowsAffected == 0
|
||||
# create table
|
||||
rowsAffected = conn.execute(f"CREATE TABLE IF NOT EXISTS `{db}`.`d0` USING `{db}`.`meters` (groupid, location) TAGS(0, 'Los Angles')")
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
f"CREATE TABLE `{db}`.`meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
|
||||
# create table
|
||||
conn.execute(f"CREATE TABLE `{db}`.`d0` USING `{db}`.`meters` TAGS(0, 'Los Angles')")
|
||||
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,22 +1,34 @@
|
|||
import taosws
|
||||
|
||||
dsn = "taosws://root:taosdata@localhost:6041"
|
||||
conn = taosws.connect(dsn)
|
||||
conn = None
|
||||
|
||||
db = "power"
|
||||
try:
|
||||
conn = taosws.connect(user="root",
|
||||
password="taosdata",
|
||||
host="localhost",
|
||||
port=6041)
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
db = "power"
|
||||
# create database
|
||||
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
|
||||
assert rowsAffected == 0
|
||||
|
||||
# change database.
|
||||
conn.execute(f"USE {db}")
|
||||
# change database.
|
||||
rowsAffected = conn.execute(f"USE {db}")
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create super table
|
||||
rowsAffected = conn.execute(
|
||||
"CREATE TABLE IF NOT EXISTS `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
"CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
|
||||
)
|
||||
# create table
|
||||
rowsAffected = conn.execute("CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupid, location) TAGS(0, 'Los Angles')")
|
||||
assert rowsAffected == 0
|
||||
|
||||
# create table
|
||||
conn.execute("CREATE TABLE `d0` USING `meters` TAGS(0, 'Los Angles')")
|
||||
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,76 +1,26 @@
|
|||
import taos
|
||||
|
||||
conn = taos.connect(
|
||||
host="localhost",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
port=6030,
|
||||
)
|
||||
conn = None
|
||||
|
||||
db = "power"
|
||||
try:
|
||||
conn = taos.connect(user="root",
|
||||
password="taosdata",
|
||||
host="localhost",
|
||||
port=6041)
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters (groupid, location) TAGS(2, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 219, 0.31000)
|
||||
(NOW + 2a, 12.60000, 218, 0.33000) (NOW + 3a, 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters (groupid, location) TAGS(3, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
|
||||
"""
|
||||
inserted = conn.execute(sql)
|
||||
print("inserted into {affectedRows} rows to power.meters successfully.")
|
||||
|
||||
# change database. same as execute "USE db"
|
||||
conn.select_db(db)
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
|
||||
)
|
||||
|
||||
# ANCHOR: insert
|
||||
# insert data
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters TAGS('California.SanFrancisco', 2)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000)
|
||||
('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters TAGS('California.SanFrancisco', 3)
|
||||
VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
|
||||
power.d1003 USING power.meters TAGS('California.LosAngeles', 2)
|
||||
VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
|
||||
power.d1004 USING power.meters TAGS('California.LosAngeles', 3)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)
|
||||
"""
|
||||
|
||||
inserted = conn.execute(sql)
|
||||
assert inserted == 8
|
||||
# ANCHOR_END: insert
|
||||
|
||||
# ANCHOR: query
|
||||
# Execute a sql and get its result set. It's useful for SELECT statement
|
||||
result = conn.query("SELECT * from meters")
|
||||
|
||||
# Get fields from result
|
||||
fields = result.fields
|
||||
for field in fields:
|
||||
print(field)
|
||||
|
||||
"""
|
||||
output:
|
||||
{name: ts, type: 9, bytes: 8}
|
||||
{name: current, type: 6, bytes: 4}
|
||||
{name: voltage, type: 4, bytes: 4}
|
||||
{name: phase, type: 6, bytes: 4}
|
||||
{name: location, type: 8, bytes: 64}
|
||||
{name: groupid, type: 4, bytes: 4}
|
||||
"""
|
||||
|
||||
# Get data from result as list of tuple
|
||||
data = result.fetch_all()
|
||||
for row in data:
|
||||
print(row)
|
||||
|
||||
"""
|
||||
output:
|
||||
(datetime.datetime(2018, 10, 3, 14, 38, 16, 650000), 10.300000190734863, 218, 0.25, 'California.SanFrancisco', 3)
|
||||
...
|
||||
"""
|
||||
# ANCHOR_END: query
|
||||
|
||||
# ANCHOR: req_id
|
||||
result = conn.query("SELECT * from meters", req_id=1)
|
||||
# ANCHOR_END: req_id
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,48 +1,26 @@
|
|||
import taosrest
|
||||
|
||||
conn = taosrest.connect(url="http://localhost:6041")
|
||||
conn = None
|
||||
|
||||
db = "power"
|
||||
try:
|
||||
conn = taosrest.connect(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters (groupid, location) TAGS(2, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 219, 0.31000)
|
||||
(NOW + 2a, 12.60000, 218, 0.33000) (NOW + 3a, 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters (groupid, location) TAGS(3, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
|
||||
"""
|
||||
affectedRows = conn.execute(sql)
|
||||
print(f"inserted into {affectedRows} rows to power.meters successfully.")
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
|
||||
)
|
||||
|
||||
# ANCHOR: insert
|
||||
# rest insert data
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters TAGS('California.SanFrancisco', 2)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000)
|
||||
('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters TAGS('California.SanFrancisco', 3)
|
||||
VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
|
||||
power.d1003 USING power.meters TAGS('California.LosAngeles', 2)
|
||||
VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
|
||||
power.d1004 USING power.meters TAGS('California.LosAngeles', 3)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)
|
||||
"""
|
||||
|
||||
inserted = conn.execute(sql)
|
||||
assert inserted == 8
|
||||
# ANCHOR_END: insert
|
||||
|
||||
# ANCHOR: query
|
||||
client = taosrest.RestClient("http://localhost:6041")
|
||||
result = client.sql(f"SELECT * from {db}.meters")
|
||||
print(result)
|
||||
|
||||
"""
|
||||
output:
|
||||
{'code': 0, 'column_meta': [['ts', 'TIMESTAMP', 8], ['current', 'FLOAT', 4], ['voltage', 'INT', 4], ['phase', 'FLOAT', 4], ['location', 'VARCHAR', 64], ['groupid', 'INT', 4]], 'data': [[datetime.datetime(2018, 10, 3, 14, 38, 5), 10.3, 219, 0.31, 'California.SanFrancisco', 2], [datetime.datetime(2018, 10, 3, 14, 38, 15), 12.6, 218, 0.33, 'California.SanFrancisco', 2], [datetime.datetime(2018, 10, 3, 14, 38, 16, 800000), 12.3, 221, 0.31, 'California.SanFrancisco', 2], [datetime.datetime(2018, 10, 3, 14, 38, 16, 650000), 10.3, 218, 0.25, 'California.SanFrancisco', 3], [datetime.datetime(2018, 10, 3, 14, 38, 5, 500000), 11.8, 221, 0.28, 'California.LosAngeles', 2], [datetime.datetime(2018, 10, 3, 14, 38, 16, 600000), 13.4, 223, 0.29, 'California.LosAngeles', 2], [datetime.datetime(2018, 10, 3, 14, 38, 5), 10.8, 223, 0.29, 'California.LosAngeles', 3], [datetime.datetime(2018, 10, 3, 14, 38, 6, 500000), 11.5, 221, 0.35, 'California.LosAngeles', 3]], 'rows': 8}
|
||||
"""
|
||||
# ANCHOR_END: query
|
||||
|
||||
# ANCHOR: req_id
|
||||
result = client.sql(f"SELECT * from {db}.meters", req_id=1)
|
||||
# ANCHOR_END: req_id
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -1,71 +1,26 @@
|
|||
import taosws
|
||||
|
||||
dsn = "taosws://root:taosdata@localhost:6041"
|
||||
conn = taosws.connect(dsn)
|
||||
conn = None
|
||||
|
||||
db = "power"
|
||||
try:
|
||||
conn = taosws.connect(user="root",
|
||||
password="taosdata",
|
||||
host="localhost",
|
||||
port=6041)
|
||||
|
||||
conn.execute(f"DROP DATABASE IF EXISTS {db}")
|
||||
conn.execute(f"CREATE DATABASE {db}")
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters (groupid, location) TAGS(2, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 219, 0.31000)
|
||||
(NOW + 2a, 12.60000, 218, 0.33000) (NOW + 3a, 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters (groupid, location) TAGS(3, 'California.SanFrancisco')
|
||||
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
|
||||
"""
|
||||
inserted = conn.execute(sql)
|
||||
print("inserted into {affectedRows} rows to power.meters successfully.")
|
||||
|
||||
# change database.
|
||||
conn.execute(f"USE {db}")
|
||||
|
||||
# create super table
|
||||
conn.execute(
|
||||
"CREATE STABLE power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
|
||||
)
|
||||
|
||||
# ANCHOR: insert
|
||||
# ws insert data
|
||||
sql = """
|
||||
INSERT INTO
|
||||
power.d1001 USING power.meters TAGS('California.SanFrancisco', 2)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.30000, 219, 0.31000)
|
||||
('2018-10-03 14:38:15.000', 12.60000, 218, 0.33000) ('2018-10-03 14:38:16.800', 12.30000, 221, 0.31000)
|
||||
power.d1002 USING power.meters TAGS('California.SanFrancisco', 3)
|
||||
VALUES ('2018-10-03 14:38:16.650', 10.30000, 218, 0.25000)
|
||||
power.d1003 USING power.meters TAGS('California.LosAngeles', 2)
|
||||
VALUES ('2018-10-03 14:38:05.500', 11.80000, 221, 0.28000) ('2018-10-03 14:38:16.600', 13.40000, 223, 0.29000)
|
||||
power.d1004 USING power.meters TAGS('California.LosAngeles', 3)
|
||||
VALUES ('2018-10-03 14:38:05.000', 10.80000, 223, 0.29000) ('2018-10-03 14:38:06.500', 11.50000, 221, 0.35000)
|
||||
"""
|
||||
|
||||
inserted = conn.execute(sql)
|
||||
assert inserted == 8
|
||||
# ANCHOR_END: insert
|
||||
|
||||
# ANCHOR: query
|
||||
# Execute a sql and get its result set. It's useful for SELECT statement
|
||||
result = conn.query("SELECT * from meters")
|
||||
|
||||
# Get fields from result
|
||||
fields = result.fields
|
||||
for field in fields:
|
||||
print(field)
|
||||
|
||||
"""
|
||||
output:
|
||||
{name: ts, type: TIMESTAMP, bytes: 8}
|
||||
{name: current, type: FLOAT, bytes: 4}
|
||||
{name: voltage, type: INT, bytes: 4}
|
||||
{name: phase, type: FLOAT, bytes: 4}
|
||||
{name: location, type: BINARY, bytes: 64}
|
||||
{name: groupid, type: INT, bytes: 4}
|
||||
"""
|
||||
|
||||
# Get rows from result
|
||||
for row in result:
|
||||
print(row)
|
||||
|
||||
"""
|
||||
output:
|
||||
('2018-10-03 14:38:05 +08:00', 10.300000190734863, 219, 0.3100000023841858, 'California.SanFrancisco', 2)
|
||||
...
|
||||
"""
|
||||
# ANCHOR_END: query
|
||||
|
||||
# ANCHOR: req_id
|
||||
result = conn.query_with_req_id("SELECT * from meters", req_id=1)
|
||||
# ANCHOR_END: req_id
|
||||
conn.close()
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,26 @@
|
|||
import taos
|
||||
|
||||
conn = None
|
||||
try:
|
||||
conn = taos.connect(host="localhost",
|
||||
port=6030,
|
||||
user="root",
|
||||
password="taosdata")
|
||||
|
||||
result = conn.query("SELECT ts, current, location FROM power.meters limit 100")
|
||||
print(result)
|
||||
# Get fields from result
|
||||
fields = result.fields
|
||||
for field in fields:
|
||||
print(field)
|
||||
|
||||
# Get data from result as list of tuple
|
||||
data = result.fetch_all()
|
||||
for row in data:
|
||||
print(row)
|
||||
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
import taosrest
|
||||
|
||||
client = None
|
||||
|
||||
try:
|
||||
client = taosrest.RestClient(url="http://localhost:6041",
|
||||
user="root",
|
||||
password="taosdata",
|
||||
timeout=30)
|
||||
|
||||
result = client.sql(f"SELECT ts, current, location FROM power.meters limit 100")
|
||||
print(result)
|
||||
|
||||
except Exception as err:
|
||||
print(err)
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
import taosws
|
||||
|
||||
conn = None
|
||||
|
||||
try:
|
||||
conn = taosws.connect(user="root",
|
||||
password="taosdata",
|
||||
host="localhost",
|
||||
port=6041)
|
||||
|
||||
result = conn.query("SELECT ts, current, location FROM power.meters limit 100")
|
||||
num_of_fields = result.field_count
|
||||
print(num_of_fields)
|
||||
|
||||
for row in result:
|
||||
print(row)
|
||||
|
||||
except Exception as err:
|
||||
print(err)
|
||||
finally:
|
||||
if conn:
|
||||
conn.close()
|
||||
|
|
@ -3,7 +3,7 @@ use taos::*;
|
|||
#[tokio::main]
|
||||
async fn main() -> Result<(), Error> {
|
||||
#[allow(unused_variables)]
|
||||
let taos = TaosBuilder::from_dsn("taos://")?.build()?;
|
||||
println!("Connected");
|
||||
let taos = TaosBuilder::from_dsn("taos://localhost:6030")?.build()?;
|
||||
println!("Connected to localhost with native connection successfully.");
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -11,20 +11,21 @@ async fn main() -> anyhow::Result<()> {
|
|||
let db = "power";
|
||||
// create database
|
||||
taos.exec_many([
|
||||
format!("DROP DATABASE IF EXISTS `{db}`"),
|
||||
format!("CREATE DATABASE `{db}`"),
|
||||
format!("CREATE DATABASE IF NOT EXISTS `{db}`"),
|
||||
format!("USE `{db}`"),
|
||||
])
|
||||
.await?;
|
||||
println!("Create database power successfully.");
|
||||
|
||||
// create table
|
||||
// create super table
|
||||
taos.exec_many([
|
||||
// create super table
|
||||
"CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) \
|
||||
TAGS (`groupid` INT, `location` BINARY(24))",
|
||||
TAGS (`groupid` INT, `location` BINARY(24))",
|
||||
]).await?;
|
||||
println!("Create stable meters successfully.");
|
||||
|
||||
// ANCHOR_END: create_db_and_table
|
||||
|
||||
|
||||
// ANCHOR: insert_data
|
||||
let inserted = taos.exec("INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
|
|
@ -36,11 +37,12 @@ async fn main() -> anyhow::Result<()> {
|
|||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ").await?;
|
||||
|
||||
println!("inserted: {} rows", inserted);
|
||||
println!("inserted: {} rows to power.meters successfully.", inserted);
|
||||
// ANCHOR_END: insert_data
|
||||
|
||||
// ANCHOR: query_data
|
||||
let mut result = taos.query("SELECT * FROM power.meters").await?;
|
||||
// query data, make sure the database and table are created before
|
||||
let mut result = taos.query("SELECT ts, current, location FROM power.meters limit 100").await?;
|
||||
|
||||
for field in result.fields() {
|
||||
println!("got field: {}", field.name());
|
||||
|
|
@ -60,7 +62,6 @@ async fn main() -> anyhow::Result<()> {
|
|||
// ANCHOR_END: query_data
|
||||
|
||||
// ANCHOR: query_with_req_id
|
||||
let result = taos.query_with_req_id("SELECT * FROM power.meters", 0).await?;
|
||||
let result = taos.query_with_req_id("SELECT ts, current, location FROM power.meters limit 1", 1).await?;
|
||||
// ANCHOR_END: query_with_req_id
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,8 +17,6 @@ async fn put() -> anyhow::Result<()> {
|
|||
|
||||
let db = "power";
|
||||
|
||||
client.exec(format!("drop database if exists {db}")).await?;
|
||||
|
||||
client
|
||||
.exec(format!("create database if not exists {db}"))
|
||||
.await?;
|
||||
|
|
@ -44,7 +42,7 @@ async fn put() -> anyhow::Result<()> {
|
|||
|
||||
// SchemalessProtocol::Telnet
|
||||
let data = [
|
||||
"meters.current 1648432611249 10.3 location=California.SanFrancisco group=2",
|
||||
"metric_telnet 1648432611249 10.3 location=California.SanFrancisco group=2",
|
||||
]
|
||||
.map(String::from)
|
||||
.to_vec();
|
||||
|
|
@ -60,7 +58,7 @@ async fn put() -> anyhow::Result<()> {
|
|||
|
||||
// SchemalessProtocol::Json
|
||||
let data = [
|
||||
r#"[{"metric": "meters.current", "timestamp": 1681345954000, "value": 10.3, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611249, "value": 219, "tags": {"location": "California.LosAngeles", "groupid": 1}}, {"metric": "meters.current", "timestamp": 1648432611250, "value": 12.6, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611250, "value": 221, "tags": {"location": "California.LosAngeles", "groupid": 1}}]"#
|
||||
r#"[{"metric": "metric_json", "timestamp": 1681345954000, "value": 10.3, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611249, "value": 219, "tags": {"location": "California.LosAngeles", "groupid": 1}}, {"metric": "meters.current", "timestamp": 1648432611250, "value": 12.6, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611250, "value": 221, "tags": {"location": "California.LosAngeles", "groupid": 1}}]"#
|
||||
]
|
||||
.map(String::from)
|
||||
.to_vec();
|
||||
|
|
@ -74,7 +72,5 @@ async fn put() -> anyhow::Result<()> {
|
|||
.build()?;
|
||||
assert_eq!(client.put(&sml_data).await?, ());
|
||||
|
||||
client.exec(format!("drop database if exists {db}")).await?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,6 +17,8 @@ async fn main() -> anyhow::Result<()> {
|
|||
for i in 0..NUM_TABLES {
|
||||
let table_name = format!("d{}", i);
|
||||
let tags = vec![Value::VarChar("California.SanFransico".into()), Value::Int(2)];
|
||||
|
||||
// set table name and tags for the prepared statement.
|
||||
stmt.set_tbname_tags(&table_name, &tags).await?;
|
||||
for j in 0..NUM_ROWS {
|
||||
let values = vec![
|
||||
|
|
@ -25,13 +27,16 @@ async fn main() -> anyhow::Result<()> {
|
|||
ColumnView::from_ints(vec![219 + j as i32]),
|
||||
ColumnView::from_floats(vec![0.31 + j as f32]),
|
||||
];
|
||||
// bind values to the prepared statement.
|
||||
stmt.bind(&values).await?;
|
||||
}
|
||||
|
||||
stmt.add_batch().await?;
|
||||
}
|
||||
|
||||
// execute.
|
||||
let rows = stmt.execute().await?;
|
||||
assert_eq!(rows, NUM_TABLES * NUM_ROWS);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -38,7 +38,7 @@ async fn main() -> anyhow::Result<()> {
|
|||
let dsn = "taos://localhost:6030";
|
||||
let builder = TaosBuilder::from_dsn(dsn)?;
|
||||
|
||||
let taos = builder.build()?;
|
||||
let taos = builder.build().await?;
|
||||
let db = "tmq";
|
||||
|
||||
// prepare database
|
||||
|
|
@ -61,9 +61,10 @@ async fn main() -> anyhow::Result<()> {
|
|||
// subscribe
|
||||
let tmq = TmqBuilder::from_dsn("taos://localhost:6030/?group.id=test")?;
|
||||
|
||||
let mut consumer = tmq.build()?;
|
||||
let mut consumer = tmq.build().await?;
|
||||
consumer.subscribe(["tmq_meters"]).await?;
|
||||
|
||||
// ANCHOR: consumer_commit_manually
|
||||
consumer
|
||||
.stream()
|
||||
.try_for_each(|(offset, message)| async {
|
||||
|
|
@ -78,11 +79,54 @@ async fn main() -> anyhow::Result<()> {
|
|||
println!("** read {} records: {:#?}\n", records.len(), records);
|
||||
}
|
||||
}
|
||||
// commit offset manually when you have processed the message.
|
||||
consumer.commit(offset).await?;
|
||||
Ok(())
|
||||
})
|
||||
.await?;
|
||||
// ANCHOR_END: consumer_commit_manually
|
||||
|
||||
|
||||
// ANCHOR: assignments
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("assignments: {:?}", assignments);
|
||||
// ANCHOR_END: assignments
|
||||
|
||||
// seek offset
|
||||
for topic_vec_assignment in assignments {
|
||||
let topic = &topic_vec_assignment.0;
|
||||
let vec_assignment = topic_vec_assignment.1;
|
||||
for assignment in vec_assignment {
|
||||
let vgroup_id = assignment.vgroup_id();
|
||||
let current = assignment.current_offset();
|
||||
let begin = assignment.begin();
|
||||
let end = assignment.end();
|
||||
log::debug!(
|
||||
"topic: {}, vgroup_id: {}, current offset: {} begin {}, end: {}",
|
||||
topic,
|
||||
vgroup_id,
|
||||
current,
|
||||
begin,
|
||||
end
|
||||
);
|
||||
// ANCHOR: seek_offset
|
||||
let res = consumer.offset_seek(topic, vgroup_id, end).await;
|
||||
if res.is_err() {
|
||||
log::error!("seek offset error: {:?}", res);
|
||||
let a = consumer.assignments().await.unwrap();
|
||||
log::error!("assignments: {:?}", a);
|
||||
}
|
||||
// ANCHOR_END: seek_offset
|
||||
}
|
||||
|
||||
let topic_assignment = consumer.topic_assignment(topic).await;
|
||||
log::debug!("topic assignment: {:?}", topic_assignment);
|
||||
}
|
||||
|
||||
// after seek offset
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("after seek offset assignments: {:?}", assignments);
|
||||
|
||||
consumer.unsubscribe().await;
|
||||
|
||||
task.await??;
|
||||
|
|
|
|||
|
|
@ -9,9 +9,11 @@ async fn main() -> anyhow::Result<()> {
|
|||
.filter_level(log::LevelFilter::Info)
|
||||
.init();
|
||||
use taos_query::prelude::*;
|
||||
// ANCHOR: create_consumer_dsn
|
||||
let dsn = "taos://localhost:6030".to_string();
|
||||
log::info!("dsn: {}", dsn);
|
||||
let mut dsn = Dsn::from_str(&dsn)?;
|
||||
// ANCHOR_END: create_consumer_dsn
|
||||
|
||||
let taos = TaosBuilder::from_dsn(&dsn)?.build().await?;
|
||||
|
||||
|
|
@ -43,19 +45,21 @@ async fn main() -> anyhow::Result<()> {
|
|||
.await?;
|
||||
// ANCHOR_END: create_topic
|
||||
|
||||
// ANCHOR: create_consumer
|
||||
dsn.params.insert("group.id".to_string(), "abc".to_string());
|
||||
dsn.params.insert("auto.offset.reset".to_string(), "earliest".to_string());
|
||||
// ANCHOR: create_consumer_ac
|
||||
dsn.params.insert("auto.offset.reset".to_string(), "latest".to_string());
|
||||
dsn.params.insert("msg.with.table.name".to_string(), "true".to_string());
|
||||
dsn.params.insert("enable.auto.commit".to_string(), "true".to_string());
|
||||
dsn.params.insert("auto.commit.interval.ms".to_string(), "1000".to_string());
|
||||
dsn.params.insert("group.id".to_string(), "group1".to_string());
|
||||
dsn.params.insert("client.id".to_string(), "client1".to_string());
|
||||
|
||||
let builder = TmqBuilder::from_dsn(&dsn)?;
|
||||
let mut consumer = builder.build().await?;
|
||||
// ANCHOR_END: create_consumer
|
||||
|
||||
// ANCHOR: subscribe
|
||||
consumer.subscribe(["topic_meters"]).await?;
|
||||
// ANCHOR_END: subscribe
|
||||
// ANCHOR_END: create_consumer_ac
|
||||
|
||||
// ANCHOR: consume
|
||||
consumer.subscribe(["topic_meters"]).await?;
|
||||
|
||||
{
|
||||
let mut stream = consumer.stream_with_timeout(Timeout::from_secs(1));
|
||||
|
||||
|
|
@ -65,7 +69,7 @@ async fn main() -> anyhow::Result<()> {
|
|||
let database = offset.database();
|
||||
let vgroup_id = offset.vgroup_id();
|
||||
log::debug!(
|
||||
"topic: {}, database: {}, vgroup_id: {}",
|
||||
"receive message from: topic: {}, database: {}, vgroup_id: {}",
|
||||
topic,
|
||||
database,
|
||||
vgroup_id
|
||||
|
|
@ -80,13 +84,13 @@ async fn main() -> anyhow::Result<()> {
|
|||
let json = meta.as_json_meta().await?;
|
||||
let sql = json.to_string();
|
||||
if let Err(err) = taos.exec(sql).await {
|
||||
println!("maybe error: {}", err);
|
||||
println!("maybe error in handling meta message: {}", err);
|
||||
}
|
||||
}
|
||||
MessageSet::Data(data) => {
|
||||
log::info!("Data");
|
||||
while let Some(data) = data.fetch_raw_block().await? {
|
||||
log::debug!("data: {:?}", data);
|
||||
log::debug!("message data: {:?}", data);
|
||||
}
|
||||
}
|
||||
MessageSet::MetaData(meta, data) => {
|
||||
|
|
@ -97,24 +101,24 @@ async fn main() -> anyhow::Result<()> {
|
|||
let json = meta.as_json_meta().await?;
|
||||
let sql = json.to_string();
|
||||
if let Err(err) = taos.exec(sql).await {
|
||||
println!("maybe error: {}", err);
|
||||
println!("maybe error in handling metadata message: {}", err);
|
||||
}
|
||||
|
||||
while let Some(data) = data.fetch_raw_block().await? {
|
||||
log::debug!("data: {:?}", data);
|
||||
log::debug!("message data: {:?}", data);
|
||||
}
|
||||
}
|
||||
}
|
||||
// commit offset manually when handling message successfully
|
||||
consumer.commit(offset).await?;
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: consume
|
||||
|
||||
// ANCHOR: assignments
|
||||
// ANCHOR: seek_offset
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("assignments: {:?}", assignments);
|
||||
// ANCHOR_END: assignments
|
||||
|
||||
log::info!("start assignments: {:?}", assignments);
|
||||
|
||||
// seek offset
|
||||
for topic_vec_assignment in assignments {
|
||||
let topic = &topic_vec_assignment.0;
|
||||
|
|
@ -132,23 +136,24 @@ async fn main() -> anyhow::Result<()> {
|
|||
begin,
|
||||
end
|
||||
);
|
||||
// ANCHOR: seek_offset
|
||||
let res = consumer.offset_seek(topic, vgroup_id, end).await;
|
||||
|
||||
// seek offset of the (topic, vgroup_id) to the begin
|
||||
let res = consumer.offset_seek(topic, vgroup_id, begin).await;
|
||||
if res.is_err() {
|
||||
log::error!("seek offset error: {:?}", res);
|
||||
let a = consumer.assignments().await.unwrap();
|
||||
log::error!("assignments: {:?}", a);
|
||||
}
|
||||
// ANCHOR_END: seek_offset
|
||||
}
|
||||
|
||||
let topic_assignment = consumer.topic_assignment(topic).await;
|
||||
log::debug!("topic assignment: {:?}", topic_assignment);
|
||||
}
|
||||
|
||||
|
||||
// after seek offset
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("after seek offset assignments: {:?}", assignments);
|
||||
// ANCHOR_END: seek_offset
|
||||
|
||||
// ANCHOR: unsubscribe
|
||||
consumer.unsubscribe().await;
|
||||
|
|
|
|||
|
|
@ -8,5 +8,7 @@ anyhow = "1"
|
|||
chrono = "0.4"
|
||||
serde = { version = "1", features = ["derive"] }
|
||||
tokio = { version = "1", features = ["rt", "macros", "rt-multi-thread"] }
|
||||
log = "0.4"
|
||||
pretty_env_logger = "0.5.0"
|
||||
|
||||
taos = { version = "0.*" }
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ use taos::*;
|
|||
#[tokio::main]
|
||||
async fn main() -> Result<(), Error> {
|
||||
#[allow(unused_variables)]
|
||||
let taos = TaosBuilder::from_dsn("taos://")?.build()?;
|
||||
println!("Connected");
|
||||
let taos = TaosBuilder::from_dsn("taos+ws://localhost:6041")?.build()?;
|
||||
println!("Connected to localhost with websocket connection successfully.");
|
||||
Ok(())
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,76 @@
|
|||
use taos_query::common::SchemalessPrecision;
|
||||
use taos_query::common::SchemalessProtocol;
|
||||
use taos_query::common::SmlDataBuilder;
|
||||
|
||||
use crate::AsyncQueryable;
|
||||
use crate::AsyncTBuilder;
|
||||
use crate::TaosBuilder;
|
||||
|
||||
async fn put() -> anyhow::Result<()> {
|
||||
std::env::set_var("RUST_LOG", "taos=debug");
|
||||
pretty_env_logger::init();
|
||||
let dsn =
|
||||
std::env::var("TDENGINE_ClOUD_DSN").unwrap_or("https://localhost:6041".to_string());
|
||||
log::debug!("dsn: {:?}", &dsn);
|
||||
|
||||
let client = TaosBuilder::from_dsn(dsn)?.build().await?;
|
||||
|
||||
let db = "power";
|
||||
|
||||
client
|
||||
.exec(format!("create database if not exists {db}"))
|
||||
.await?;
|
||||
|
||||
// should specify database before insert
|
||||
client.exec(format!("use {db}")).await?;
|
||||
|
||||
// SchemalessProtocol::Line
|
||||
let data = [
|
||||
"meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639000000",
|
||||
]
|
||||
.map(String::from)
|
||||
.to_vec();
|
||||
|
||||
let sml_data = SmlDataBuilder::default()
|
||||
.protocol(SchemalessProtocol::Line)
|
||||
.precision(SchemalessPrecision::Millisecond)
|
||||
.data(data.clone())
|
||||
.ttl(1000)
|
||||
.req_id(100u64)
|
||||
.build()?;
|
||||
assert_eq!(client.put(&sml_data).await?, ());
|
||||
|
||||
// SchemalessProtocol::Telnet
|
||||
let data = [
|
||||
"metric_telnet 1648432611249 10.3 location=California.SanFrancisco group=2",
|
||||
]
|
||||
.map(String::from)
|
||||
.to_vec();
|
||||
|
||||
let sml_data = SmlDataBuilder::default()
|
||||
.protocol(SchemalessProtocol::Telnet)
|
||||
.precision(SchemalessPrecision::Millisecond)
|
||||
.data(data.clone())
|
||||
.ttl(1000)
|
||||
.req_id(200u64)
|
||||
.build()?;
|
||||
assert_eq!(client.put(&sml_data).await?, ());
|
||||
|
||||
// SchemalessProtocol::Json
|
||||
let data = [
|
||||
r#"[{"metric": "metric_json", "timestamp": 1681345954000, "value": 10.3, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611249, "value": 219, "tags": {"location": "California.LosAngeles", "groupid": 1}}, {"metric": "meters.current", "timestamp": 1648432611250, "value": 12.6, "tags": {"location": "California.SanFrancisco", "groupid": 2}}, {"metric": "meters.voltage", "timestamp": 1648432611250, "value": 221, "tags": {"location": "California.LosAngeles", "groupid": 1}}]"#
|
||||
]
|
||||
.map(String::from)
|
||||
.to_vec();
|
||||
|
||||
let sml_data = SmlDataBuilder::default()
|
||||
.protocol(SchemalessProtocol::Json)
|
||||
.precision(SchemalessPrecision::Millisecond)
|
||||
.data(data.clone())
|
||||
.ttl(1000)
|
||||
.req_id(300u64)
|
||||
.build()?;
|
||||
assert_eq!(client.put(&sml_data).await?, ());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
use taos::*;
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() -> anyhow::Result<()> {
|
||||
let taos = TaosBuilder::from_dsn("ws://")?.build().await?;
|
||||
|
||||
taos.exec("DROP DATABASE IF EXISTS power").await?;
|
||||
taos.create_database("power").await?;
|
||||
taos.use_database("power").await?;
|
||||
taos.exec("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)").await?;
|
||||
|
||||
let mut stmt = Stmt::init(&taos).await?;
|
||||
stmt.prepare("INSERT INTO ? USING meters TAGS(?, ?) VALUES(?, ?, ?, ?)").await?;
|
||||
|
||||
const NUM_TABLES: usize = 10;
|
||||
const NUM_ROWS: usize = 10;
|
||||
for i in 0..NUM_TABLES {
|
||||
let table_name = format!("d{}", i);
|
||||
let tags = vec![Value::VarChar("California.SanFransico".into()), Value::Int(2)];
|
||||
|
||||
// set table name and tags for the prepared statement.
|
||||
stmt.set_tbname_tags(&table_name, &tags).await?;
|
||||
for j in 0..NUM_ROWS {
|
||||
let values = vec![
|
||||
ColumnView::from_millis_timestamp(vec![1648432611249 + j as i64]),
|
||||
ColumnView::from_floats(vec![10.3 + j as f32]),
|
||||
ColumnView::from_ints(vec![219 + j as i32]),
|
||||
ColumnView::from_floats(vec![0.31 + j as f32]),
|
||||
];
|
||||
// bind values to the prepared statement.
|
||||
stmt.bind(&values).await?;
|
||||
}
|
||||
|
||||
stmt.add_batch().await?;
|
||||
}
|
||||
|
||||
// execute.
|
||||
let rows = stmt.execute().await?;
|
||||
assert_eq!(rows, NUM_TABLES * NUM_ROWS);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
use std::time::Duration;
|
||||
|
||||
use chrono::{DateTime, Local};
|
||||
use taos::*;
|
||||
|
||||
// Query options 2, use deserialization with serde.
|
||||
#[derive(Debug, serde::Deserialize)]
|
||||
#[allow(dead_code)]
|
||||
struct Record {
|
||||
// deserialize timestamp to chrono::DateTime<Local>
|
||||
ts: DateTime<Local>,
|
||||
// float to f32
|
||||
current: Option<f32>,
|
||||
// int to i32
|
||||
voltage: Option<i32>,
|
||||
phase: Option<f32>,
|
||||
}
|
||||
|
||||
async fn prepare(taos: Taos) -> anyhow::Result<()> {
|
||||
let inserted = taos.exec_many([
|
||||
// create child table
|
||||
"CREATE TABLE `d0` USING `meters` TAGS(0, 'California.LosAngles')",
|
||||
// insert into child table
|
||||
"INSERT INTO `d0` values(now - 10s, 10, 116, 0.32)",
|
||||
// insert with NULL values
|
||||
"INSERT INTO `d0` values(now - 8s, NULL, NULL, NULL)",
|
||||
// insert and automatically create table with tags if not exists
|
||||
"INSERT INTO `d1` USING `meters` TAGS(1, 'California.SanFrancisco') values(now - 9s, 10.1, 119, 0.33)",
|
||||
// insert many records in a single sql
|
||||
"INSERT INTO `d1` values (now-8s, 10, 120, 0.33) (now - 6s, 10, 119, 0.34) (now - 4s, 11.2, 118, 0.322)",
|
||||
]).await?;
|
||||
assert_eq!(inserted, 6);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() -> anyhow::Result<()> {
|
||||
let dsn = "ws://localhost:6041";
|
||||
let builder = TaosBuilder::from_dsn(dsn)?;
|
||||
|
||||
let taos = builder.build().await?;
|
||||
let db = "tmq";
|
||||
|
||||
// prepare database
|
||||
taos.exec_many([
|
||||
format!("DROP TOPIC IF EXISTS tmq_meters"),
|
||||
format!("DROP DATABASE IF EXISTS `{db}`"),
|
||||
format!("CREATE DATABASE `{db}` WAL_RETENTION_PERIOD 3600"),
|
||||
format!("USE `{db}`"),
|
||||
// create super table
|
||||
format!("CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(24))"),
|
||||
// create topic for subscription
|
||||
format!("CREATE TOPIC tmq_meters AS SELECT * FROM `meters`")
|
||||
])
|
||||
.await?;
|
||||
|
||||
let task = tokio::spawn(prepare(taos));
|
||||
|
||||
tokio::time::sleep(Duration::from_secs(1)).await;
|
||||
|
||||
// subscribe
|
||||
let tmq = TmqBuilder::from_dsn("ws://localhost:6041/?group.id=test")?;
|
||||
|
||||
let mut consumer = tmq.build().await?;
|
||||
consumer.subscribe(["tmq_meters"]).await?;
|
||||
|
||||
// ANCHOR: consumer_commit_manually
|
||||
consumer
|
||||
.stream()
|
||||
.try_for_each(|(offset, message)| async {
|
||||
let topic = offset.topic();
|
||||
// the vgroup id, like partition id in kafka.
|
||||
let vgroup_id = offset.vgroup_id();
|
||||
println!("* in vgroup id {vgroup_id} of topic {topic}\n");
|
||||
|
||||
if let Some(data) = message.into_data() {
|
||||
while let Some(block) = data.fetch_raw_block().await? {
|
||||
let records: Vec<Record> = block.deserialize().try_collect()?;
|
||||
println!("** read {} records: {:#?}\n", records.len(), records);
|
||||
}
|
||||
}
|
||||
// commit offset manually when you have processed the message.
|
||||
consumer.commit(offset).await?;
|
||||
Ok(())
|
||||
})
|
||||
.await?;
|
||||
// ANCHOR_END: consumer_commit_manually
|
||||
|
||||
|
||||
// ANCHOR: assignments
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("assignments: {:?}", assignments);
|
||||
// ANCHOR_END: assignments
|
||||
|
||||
// seek offset
|
||||
for topic_vec_assignment in assignments {
|
||||
let topic = &topic_vec_assignment.0;
|
||||
let vec_assignment = topic_vec_assignment.1;
|
||||
for assignment in vec_assignment {
|
||||
let vgroup_id = assignment.vgroup_id();
|
||||
let current = assignment.current_offset();
|
||||
let begin = assignment.begin();
|
||||
let end = assignment.end();
|
||||
log::debug!(
|
||||
"topic: {}, vgroup_id: {}, current offset: {} begin {}, end: {}",
|
||||
topic,
|
||||
vgroup_id,
|
||||
current,
|
||||
begin,
|
||||
end
|
||||
);
|
||||
// ANCHOR: seek_offset
|
||||
let res = consumer.offset_seek(topic, vgroup_id, end).await;
|
||||
if res.is_err() {
|
||||
log::error!("seek offset error: {:?}", res);
|
||||
let a = consumer.assignments().await.unwrap();
|
||||
log::error!("assignments: {:?}", a);
|
||||
}
|
||||
// ANCHOR_END: seek_offset
|
||||
}
|
||||
|
||||
let topic_assignment = consumer.topic_assignment(topic).await;
|
||||
log::debug!("topic assignment: {:?}", topic_assignment);
|
||||
}
|
||||
|
||||
// after seek offset
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("after seek offset assignments: {:?}", assignments);
|
||||
|
||||
consumer.unsubscribe().await;
|
||||
|
||||
task.await??;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -0,0 +1,136 @@
|
|||
use std::time::Duration;
|
||||
use std::str::FromStr;
|
||||
|
||||
use taos::*;
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() -> anyhow::Result<()> {
|
||||
pretty_env_logger::formatted_timed_builder()
|
||||
.filter_level(log::LevelFilter::Info)
|
||||
.init();
|
||||
use taos_query::prelude::*;
|
||||
// ANCHOR: create_consumer_dsn
|
||||
let dsn = "ws://localhost:6041".to_string();
|
||||
log::info!("dsn: {}", dsn);
|
||||
let mut dsn = Dsn::from_str(&dsn)?;
|
||||
// ANCHOR_END: create_consumer_dsn
|
||||
|
||||
let taos = TaosBuilder::from_dsn(&dsn)?.build().await?;
|
||||
|
||||
// prepare database and table
|
||||
taos.exec_many([
|
||||
"drop topic if exists topic_meters",
|
||||
"drop database if exists power",
|
||||
"create database if not exists power WAL_RETENTION_PERIOD 86400",
|
||||
"use power",
|
||||
"CREATE STABLE IF NOT EXISTS power.meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))",
|
||||
"create table if not exists power.d001 using power.meters tags(1,'location')",
|
||||
])
|
||||
.await?;
|
||||
|
||||
taos.exec_many([
|
||||
"drop database if exists db2",
|
||||
"create database if not exists db2 wal_retention_period 3600",
|
||||
"use db2",
|
||||
])
|
||||
.await?;
|
||||
|
||||
// ANCHOR: create_topic
|
||||
taos.exec_many([
|
||||
"CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM power.meters",
|
||||
])
|
||||
.await?;
|
||||
// ANCHOR_END: create_topic
|
||||
|
||||
// ANCHOR: create_consumer_ac
|
||||
dsn.params.insert("auto.offset.reset".to_string(), "latest".to_string());
|
||||
dsn.params.insert("msg.with.table.name".to_string(), "true".to_string());
|
||||
dsn.params.insert("enable.auto.commit".to_string(), "true".to_string());
|
||||
dsn.params.insert("auto.commit.interval.ms".to_string(), "1000".to_string());
|
||||
dsn.params.insert("group.id".to_string(), "group1".to_string());
|
||||
dsn.params.insert("client.id".to_string(), "client1".to_string());
|
||||
|
||||
let builder = TmqBuilder::from_dsn(&dsn)?;
|
||||
let mut consumer = builder.build().await?;
|
||||
// ANCHOR_END: create_consumer_ac
|
||||
|
||||
// ANCHOR: subscribe
|
||||
consumer.subscribe(["topic_meters"]).await?;
|
||||
// ANCHOR_END: subscribe
|
||||
|
||||
// ANCHOR: consume
|
||||
{
|
||||
consumer
|
||||
.stream()
|
||||
.try_for_each(|(offset, message)| async {
|
||||
let topic = offset.topic();
|
||||
// the vgroup id, like partition id in kafka.
|
||||
let vgroup_id = offset.vgroup_id();
|
||||
println!("* in vgroup id {vgroup_id} of topic {topic}\n");
|
||||
|
||||
if let Some(data) = message.into_data() {
|
||||
while let Some(block) = data.fetch_raw_block().await? {
|
||||
let records: Vec<Record> = block.deserialize().try_collect()?;
|
||||
println!("** read {} records: {:#?}\n", records.len(), records);
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
})
|
||||
.await?;
|
||||
}
|
||||
// ANCHOR_END: consume
|
||||
|
||||
// ANCHOR: assignments
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("assignments: {:?}", assignments);
|
||||
// ANCHOR_END: assignments
|
||||
|
||||
// seek offset
|
||||
for topic_vec_assignment in assignments {
|
||||
let topic = &topic_vec_assignment.0;
|
||||
let vec_assignment = topic_vec_assignment.1;
|
||||
for assignment in vec_assignment {
|
||||
let vgroup_id = assignment.vgroup_id();
|
||||
let current = assignment.current_offset();
|
||||
let begin = assignment.begin();
|
||||
let end = assignment.end();
|
||||
log::debug!(
|
||||
"topic: {}, vgroup_id: {}, current offset: {} begin {}, end: {}",
|
||||
topic,
|
||||
vgroup_id,
|
||||
current,
|
||||
begin,
|
||||
end
|
||||
);
|
||||
// ANCHOR: seek_offset
|
||||
let res = consumer.offset_seek(topic, vgroup_id, end).await;
|
||||
if res.is_err() {
|
||||
log::error!("seek offset error: {:?}", res);
|
||||
let a = consumer.assignments().await.unwrap();
|
||||
log::error!("assignments: {:?}", a);
|
||||
}
|
||||
// ANCHOR_END: seek_offset
|
||||
}
|
||||
|
||||
let topic_assignment = consumer.topic_assignment(topic).await;
|
||||
log::debug!("topic assignment: {:?}", topic_assignment);
|
||||
}
|
||||
|
||||
// after seek offset
|
||||
let assignments = consumer.assignments().await.unwrap();
|
||||
log::info!("after seek offset assignments: {:?}", assignments);
|
||||
|
||||
// ANCHOR: unsubscribe
|
||||
consumer.unsubscribe().await;
|
||||
// ANCHOR_END: unsubscribe
|
||||
|
||||
tokio::time::sleep(Duration::from_secs(1)).await;
|
||||
|
||||
taos.exec_many([
|
||||
"drop database db2",
|
||||
"drop topic topic_meters",
|
||||
"drop database power",
|
||||
])
|
||||
.await?;
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -13,8 +13,6 @@ import ConnNode from "./_connect_node.mdx";
|
|||
import ConnPythonNative from "./_connect_python.mdx";
|
||||
import ConnCSNative from "./_connect_cs.mdx";
|
||||
import ConnC from "./_connect_c.mdx";
|
||||
import ConnR from "./_connect_r.mdx";
|
||||
import ConnPHP from "./_connect_php.mdx";
|
||||
import InstallOnLinux from "../../14-reference/05-connector/_linux_install.mdx";
|
||||
import InstallOnWindows from "../../14-reference/05-connector/_windows_install.mdx";
|
||||
import InstallOnMacOS from "../../14-reference/05-connector/_macos_install.mdx";
|
||||
|
|
@ -220,7 +218,7 @@ taos = { version = "*", default-features = false, features = ["ws"] }
|
|||
|
||||
编辑项目配置文件中添加 [TDengine.Connector](https://www.nuget.org/packages/TDengine.Connector/) 的引用即可：
|
||||
|
||||
```xml title=csharp.csproj {12}
|
||||
```xml title=csharp.csproj
|
||||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
|
|
@ -249,62 +247,12 @@ dotnet add package TDengine.Connector
|
|||
|
||||
:::
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
1. 下载 [taos-jdbcdriver-version-dist.jar](https://repo1.maven.org/maven2/com/taosdata/jdbc/taos-jdbcdriver/3.0.0/)。
|
||||
2. 安装 R 的依赖包`RJDBC`：
|
||||
|
||||
```R
|
||||
install.packages("RJDBC")
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
如果已经安装了 TDengine 服务端软件或 TDengine 客户端驱动 taosc， 那么已经安装了 C 连接器，无需额外操作。
|
||||
<br/>
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
**下载代码并解压：**
|
||||
|
||||
```shell
|
||||
curl -L -o php-tdengine.tar.gz https://github.com/Yurunsoft/php-tdengine/archive/refs/tags/v1.0.2.tar.gz \
|
||||
&& mkdir php-tdengine \
|
||||
&& tar -xzf php-tdengine.tar.gz -C php-tdengine --strip-components=1
|
||||
```
|
||||
|
||||
> 版本 `v1.0.2` 只是示例，可替换为任意更新的版本，可在 [TDengine PHP Connector 发布历史](https://github.com/Yurunsoft/php-tdengine/releases) 中查看可用版本。
|
||||
|
||||
**非 Swoole 环境：**
|
||||
|
||||
```shell
|
||||
phpize && ./configure && make -j && make install
|
||||
```
|
||||
|
||||
**手动指定 TDengine 目录：**
|
||||
|
||||
```shell
|
||||
phpize && ./configure --with-tdengine-dir=/usr/local/Cellar/tdengine/3.0.0.0 && make -j && make install
|
||||
```
|
||||
|
||||
> `--with-tdengine-dir=` 后跟上 TDengine 目录。
|
||||
> 适用于默认找不到的情况，或者 macOS 系统用户。
|
||||
|
||||
**Swoole 环境：**
|
||||
|
||||
```shell
|
||||
phpize && ./configure --enable-swoole && make -j && make install
|
||||
```
|
||||
|
||||
**启用扩展：**
|
||||
|
||||
方法一：在 `php.ini` 中加入 `extension=tdengine`
|
||||
|
||||
方法二：运行带参数 `php -d extension=tdengine test.php`
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -321,18 +269,88 @@ Java 连接器建立连接的参数有 URL 和 Properties。
|
|||
TDengine 的 JDBC URL 规范格式为：
|
||||
`jdbc:[TAOS|TAOS-RS]://[host_name]:[port]/[database_name]?[user={user}|&password={password}|&charset={charset}|&cfgdir={config_dir}|&locale={locale}|&timezone={timezone}]`
|
||||
|
||||
URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../../reference/connector/java/#url-规范)
|
||||
URL 和 Properties 的详细参数说明和如何使用详见 [url 规范](../../reference/connector/java/#url-规范)
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
数据源名称具有通用格式，例如 [PEAR DB](http://pear.php.net/manual/en/package.database.db.intro-dsn.php)，但没有类型前缀（方括号表示可选）：
|
||||
|
||||
``` text
|
||||
[username[:password]@][protocol[(address)]]/[dbname][?param1=value1&...¶mN=valueN]
|
||||
```
|
||||
|
||||
完整形式的 DSN：
|
||||
|
||||
```text
|
||||
username:password@protocol(address)/dbname?param=value
|
||||
```
|
||||
|
||||
支持的 DSN 参数如下
|
||||
|
||||
原生连接：
|
||||
|
||||
- `cfg` 指定 taos.cfg 目录
|
||||
- `cgoThread` 指定 cgo 同时执行的数量，默认为系统核数
|
||||
- `cgoAsyncHandlerPoolSize` 指定异步函数的 handle 大小，默认为 10000
|
||||
|
||||
REST 连接：
|
||||
|
||||
- `disableCompression` 是否接受压缩数据，默认为 true 不接受压缩数据，如果传输数据使用 gzip 压缩设置为 false。
|
||||
- `readBufferSize` 读取数据的缓存区大小默认为 4K（4096），当查询结果数据量多时可以适当调大该值。
|
||||
- `token` 连接云服务时使用的 token。
|
||||
- `skipVerify` 是否跳过证书验证，默认为 false 不跳过证书验证，如果连接的是不安全的服务设置为 true。
|
||||
|
||||
WebSocket 连接：
|
||||
|
||||
- `enableCompression` 是否发送压缩数据，默认为 false 不发送压缩数据，如果传输数据使用压缩设置为 true。
|
||||
- `readTimeout` 读取数据的超时时间，默认为 5m。
|
||||
- `writeTimeout` 写入数据的超时时间，默认为 10s。
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
Rust 连接器使用 DSN 来创建连接， DSN 描述字符串基本结构如下：
|
||||
|
||||
```text
|
||||
<driver>[+<protocol>]://[[<username>:<password>@]<host>:<port>][/<database>][?<p1>=<v1>[&<p2>=<v2>]]
|
||||
|------|------------|---|-----------|-----------|------|------|------------|-----------------------|
|
||||
|driver| protocol | | username | password | host | port | database | params |
|
||||
```
|
||||
|
||||
DSN 的详细说明和如何使用详见 [连接功能](../../reference/connector/rust/#连接功能)
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
ConnectionStringBuilder 使用 key-value 对方式设置连接参数，key 为参数名，value 为参数值，不同参数之间使用分号 `;` 分割。
|
||||
|
||||
例如：
|
||||
|
||||
```csharp
|
||||
"protocol=WebSocket;host=127.0.0.1;port=6041;useSSL=false"
|
||||
```
|
||||
支持的参数如下：
|
||||
|
||||
- `host`：TDengine 运行实例的地址。
|
||||
- `port`：TDengine 运行实例的端口。
|
||||
- `username`：连接的用户名。
|
||||
- `password`：连接的密码。
|
||||
- `protocol`：连接的协议，可选值为 Native 或 WebSocket，默认为 Native。
|
||||
- `db`：连接的数据库。
|
||||
- `timezone`：时区，默认为本地时区。
|
||||
- `connTimeout`：连接超时时间，默认为 1 分钟。
|
||||
|
||||
WebSocket 连接额外支持以下参数：
|
||||
|
||||
- `readTimeout`：读取超时时间，默认为 5 分钟。
|
||||
- `writeTimeout`：发送超时时间，默认为 10 秒。
|
||||
- `token`：连接 TDengine cloud 的 token。
|
||||
- `useSSL`：是否使用 SSL 连接，默认为 false。
|
||||
- `enableCompression`：是否启用 WebSocket 压缩，默认为 false。
|
||||
- `autoReconnect`：是否自动重连，默认为 false。
|
||||
- `reconnectRetryCount`：重连次数，默认为 3。
|
||||
- `reconnectIntervalMs`：重连间隔毫秒时间，默认为 2000。
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
使用客户端驱动访问 TDengine 集群的基本过程为：建立连接、查询和写入、关闭连接、清除资源。
|
||||
|
|
@ -361,10 +379,6 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
|
||||
:::
|
||||
|
||||
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
|
@ -373,7 +387,7 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
下面是各语言连接器建立 Websocket 连接代码样例。演示了如何使用 Websocket 连接方式连接到 TDengine 数据库，并对连接设定一些参数。整个过程主要涉及到数据库连接的建立和异常处理。
|
||||
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem label="Java" value="java">
|
||||
<TabItem label="Java" value="java">
|
||||
```java
|
||||
{{#include docs/examples/java/src/main/java/com/taos/example/WSConnectExample.java:main}}
|
||||
```
|
||||
|
|
@ -384,10 +398,14 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
```
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
<ConnGo />
|
||||
```go
|
||||
{{#include docs/examples/go/connect/wsexample/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
<ConnRust />
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/connect.rs}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node">
|
||||
```js
|
||||
|
|
@ -395,17 +413,13 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
<ConnCSNative />
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
<ConnR/>
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsConnect/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
<ConnC />
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<ConnPHP />
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
|
|
@ -416,33 +430,33 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
```java
|
||||
{{#include docs/examples/java/src/main/java/com/taos/example/JNIConnectExample.java:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
<ConnPythonNative />
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
<ConnGo />
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
<ConnRust />
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
<ConnCSNative />
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
<ConnR/>
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
<ConnC />
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<ConnPHP />
|
||||
</TabItem>
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
<ConnPythonNative />
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/connect/cgoexample/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/connect.rs}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
```csharp title="WebSocket 连接"
|
||||
{{#include docs/examples/csharp/connect/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
<ConnC />
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
### REST 连接
|
||||
下面是各语言连接器建立 RESt 连接代码样例。演示了如何使用 REST 连接方式连接到 TDengine 数据库。整个过程主要涉及到数据库连接的建立和异常处理。
|
||||
下面是各语言连接器建立 REST 连接代码样例。演示了如何使用 REST 连接方式连接到 TDengine 数据库。整个过程主要涉及到数据库连接的建立和异常处理。
|
||||
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem label="Java" value="java">
|
||||
|
|
@ -452,27 +466,23 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
```python
|
||||
{{#include docs/examples/python/connect_rest_examples.py:connect}}
|
||||
{{#include docs/examples/python/connect_rest_example.py:connect}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
<ConnGo />
|
||||
```go
|
||||
{{#include docs/examples/go/connect/restexample/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
<ConnRust />
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
<ConnCSNative />
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
<ConnR/>
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
<ConnC />
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<ConnPHP />
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -516,22 +526,48 @@ URL 和 Properties 的详细参数说明和如何使用详见 [API 说明](../..
|
|||
<ConnPythonNative />
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
<ConnGo />
|
||||
|
||||
使用 `sql.Open` 创建出来的连接已经实现了连接池，可以通过 API 设置连接池参数，样例如下
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/connect/connpool/main.go:pool}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
<ConnRust />
|
||||
|
||||
在复杂应用中，建议启用连接池。[taos] 的连接池默认（异步模式）使用 [deadpool] 实现。
|
||||
|
||||
如下，可以生成一个默认参数的连接池。
|
||||
|
||||
```rust
|
||||
let pool: Pool<TaosBuilder> = TaosBuilder::from_dsn("taos:///")
|
||||
.unwrap()
|
||||
.pool()
|
||||
.unwrap();
|
||||
```
|
||||
|
||||
同样可以使用连接池的构造器，对连接池参数进行设置：
|
||||
|
||||
```rust
|
||||
let pool: Pool<TaosBuilder> = Pool::builder(Manager::from_dsn(self.dsn.clone()).unwrap().0)
|
||||
.max_size(88) // 最大连接数
|
||||
.build()
|
||||
.unwrap();
|
||||
```
|
||||
|
||||
在应用代码中，使用 `pool.get()?` 来获取一个连接对象 [Taos]。
|
||||
|
||||
```rust
|
||||
let taos = pool.get()?;
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
<ConnCSNative />
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
<ConnR/>
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
<ConnC />
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<ConnPHP />
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
|
|
|||
|
|
@ -11,6 +11,14 @@ TDengine 对 SQL 语言提供了全面的支持，允许用户以熟悉的 SQL
|
|||
|
||||
下面介绍使用各语言连接器通过执行 SQL 完成建库、建表、写入数据和查询数据。
|
||||
|
||||
:::note
|
||||
|
||||
REST 连接：各编程语言的连接器封装使用 `HTTP` 请求的连接，支持数据写入和查询操作，开发者依然使用连接器提供的接口访问 `TDengine`。
|
||||
REST API：直接调用 `taosadapter` 提供的 REST API 接口，进行数据写入和查询操作。代码示例使用 `curl` 命令来演示。
|
||||
|
||||
:::
|
||||
|
||||
|
||||
## 建库和表
|
||||
下面以智能电表为例，展示使用各语言连接器如何执行 SQL 命令创建一个名为 `power` 的数据库，然后使用 `power` 数据库为默认数据库。
|
||||
接着创建一个名为 `meters` 的超级表（STABLE），其表结构包含时间戳、电流、电压、相位等列，以及分组 ID 和位置作为标签。
|
||||
|
|
@ -21,20 +29,43 @@ TDengine 对 SQL 语言提供了全面的支持，允许用户以熟悉的 SQL
|
|||
```java
|
||||
{{#include examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/JdbcCreatDBDemo.java:create_db_and_table}}
|
||||
```
|
||||
> **注意**：如果不使用 `USE power` 指定数据库，则后续对表的操作都需要增加数据库名称作为前缀，如 power.meters。
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
- Websocket 连接
|
||||
|
||||
```python title="Websocket 连接"
|
||||
{{#include docs/examples/python/create_db_ws.py}}
|
||||
```
|
||||
|
||||
```python title="原生连接"
|
||||
{{#include docs/examples/python/create_db_native.py}}
|
||||
```
|
||||
|
||||
```python title="Rest 连接"
|
||||
{{#include docs/examples/python/create_db_rest.py}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/sqlquery/main.go:create_db_and_table}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:create_db_and_table}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node.js">
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/sql_example.js:create_db_and_table}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsInsert/Program.cs:create_db_and_table}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
```c
|
||||
|
|
@ -42,9 +73,25 @@ TDengine 对 SQL 语言提供了全面的支持，允许用户以熟悉的 SQL
|
|||
```
|
||||
> **注意**：如果不使用 `USE power` 指定数据库，则后续对表的操作都需要增加数据库名称作为前缀，如 power.meters。
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<TabItem label="REST API" value="rest">
|
||||
|
||||
创建数据库
|
||||
|
||||
```bash
|
||||
curl --location -uroot:taosdata 'http://127.0.0.1:6041/rest/sql' \
|
||||
--data 'CREATE DATABASE IF NOT EXISTS power'
|
||||
```
|
||||
|
||||
创建表，在 url 中指定数据库为 `power`
|
||||
|
||||
```bash
|
||||
curl --location -uroot:taosdata 'http://127.0.0.1:6041/rest/sql/power' \
|
||||
--data 'CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))'
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
> **注意**：如果不使用 `USE power` 指定数据库，则后续对表的操作都需要增加数据库名称作为前缀，如 `power.meters`。
|
||||
|
||||
## 插入数据
|
||||
下面以智能电表为例，展示如何使用连接器执行 SQL 来插入数据到 `power` 数据库的 `meters` 超级表。样例使用 TDengine 自动建表 SQL 语法，写入 d1001 子表中 3 条数据，写入 d1002 子表中 1 条数据，然后打印出实际插入数据条数。
|
||||
|
|
@ -61,14 +108,41 @@ NOW 为系统内部函数，默认为客户端所在计算机当前时间。 NOW
|
|||
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
|
||||
```python title="Websocket 连接"
|
||||
{{#include docs/examples/python/insert_ws.py}}
|
||||
```
|
||||
|
||||
```python title="原生连接"
|
||||
{{#include docs/examples/python/insert_native.py}}
|
||||
```
|
||||
|
||||
```python title="Rest 连接"
|
||||
{{#include docs/examples/python/insert_rest.py}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/sqlquery/main.go:insert_data}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:insert_data}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node.js">
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/sql_example.js:insertData}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsInsert/Program.cs:insert_data}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
```c
|
||||
|
|
@ -78,7 +152,15 @@ NOW 为系统内部函数，默认为客户端所在计算机当前时间。 NOW
|
|||
**Note**
|
||||
NOW 为系统内部函数，默认为客户端所在计算机当前时间。 NOW + 1s 代表客户端当前时间往后加 1 秒，数字后面代表时间单位：a（毫秒），s（秒），m（分），h（小时），d（天），w（周），n（月），y（年）。
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<TabItem label="REST API" value="rest">
|
||||
|
||||
写入数据
|
||||
|
||||
```bash
|
||||
curl --location -uroot:taosdata 'http://127.0.0.1:6041/rest/sql' \
|
||||
--data 'INSERT INTO power.d1001 USING power.meters TAGS(2,'\''California.SanFrancisco'\'') VALUES (NOW + 1a, 10.30000, 219, 0.31000) (NOW + 2a, 12.60000, 218, 0.33000) (NOW + 3a, 12.30000, 221, 0.31000) power.d1002 USING power.meters TAGS(3, '\''California.SanFrancisco'\'') VALUES (NOW + 1a, 10.30000, 218, 0.25000)'
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -96,21 +178,55 @@ NOW 为系统内部函数，默认为客户端所在计算机当前时间。 NOW
|
|||
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
|
||||
```python title="Websocket 连接"
|
||||
{{#include docs/examples/python/query_ws.py}}
|
||||
```
|
||||
|
||||
```python title="原生连接"
|
||||
{{#include docs/examples/python/query_native.py}}
|
||||
```
|
||||
|
||||
```python title="Rest 连接"
|
||||
{{#include docs/examples/python/query_rest.py}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/sqlquery/main.go:select_data}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:query_data}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node.js">
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/sql_example.js:queryData}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsInsert/Program.cs:select_data}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
```c
|
||||
{{#include docs/examples/c/CQueryDataDemo.c:query_data}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<TabItem label="REST API" value="rest">
|
||||
|
||||
查询数据
|
||||
|
||||
```bash
|
||||
curl --location -uroot:taosdata 'http://127.0.0.1:6041/rest/sql' \
|
||||
--data 'SELECT ts, current, location FROM power.meters limit 100'
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -138,18 +254,40 @@ reqId 可用于请求链路追踪，reqId 就像分布式系统中的 traceId
|
|||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/queryreqid/main.go:query_id}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:query_with_req_id}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node.js">
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/sql_example.js:sqlWithReqid}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsInsert/Program.cs:query_id}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
```c
|
||||
{{#include docs/examples/c/CWithReqIdDemo.c:with_reqid}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
<TabItem label="REST API" value="rest">
|
||||
|
||||
查询数据，指定 reqId 为 3
|
||||
|
||||
```bash
|
||||
curl --location -uroot:taosdata 'http://127.0.0.1:6041/rest/sql?req_id=3' \
|
||||
--data 'SELECT ts, current, location FROM power.meters limit 1'
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
|
|
|||
|
|
@ -161,7 +161,7 @@ st,t1=3,t2=4,t3=t3 c1=3i64,c6="passit" 1626006833640000000
|
|||
|
||||
### Websocket 连接
|
||||
|
||||
<Tabs defaultValue="java" groupId="schemaless">
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem value="java" label="Java">
|
||||
|
||||
```java
|
||||
|
|
@ -179,17 +179,29 @@ writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO
|
|||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/schemaless/ws/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/schemaless.rs}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node.js">
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/line_example.js}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssml/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
|
|
@ -205,21 +217,27 @@ writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO
|
|||
writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO_SECONDS, 1L);
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
</TabItem>
|
||||
</TabItem>
|
||||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
```go
|
||||
{{#include docs/examples/go/schemaless/native/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
除 DSN 不同，其余同 Websocket 代码示例。
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/nativesml/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
```c
|
||||
{{#include docs/examples/c/CSmlInsertDemo.c:schemaless}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -232,17 +250,16 @@ writer.write(lineDemo, SchemalessProtocolType.LINE, SchemalessTimestampType.NANO
|
|||
<TabItem label="Python" value="python">
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
不支持
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
|
|
|
|||
|
|
@ -39,28 +39,30 @@ import TabItem from "@theme/TabItem";
|
|||
```
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/stmt/ws/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/stmt.rs}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/sql_example.js:createConnect}}
|
||||
```
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/stmt_example.js:createConnect}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wsStmt/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -79,22 +81,22 @@ import TabItem from "@theme/TabItem";
|
|||
|
||||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/stmt/native/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
除 DSN 不同，其余同 Websocket 代码示例。
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/stmtInsert/Program.cs:main}}
|
||||
```
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
```c
|
||||
{{#include docs/examples/c/CStmtInsertDemo.c}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
|
|
|||
|
|
@ -46,7 +46,7 @@ TDengine 消费者的概念跟 Kafka 类似，消费者通过订阅主题来接
|
|||
下面是各语言连接器创建参数：
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem value="java" label="Java">
|
||||
Java 连接器创建消费者的参数为 Properties， 可以设置的参数列表请参考 [API 说明](../../reference/connector/java/#消费者)
|
||||
Java 连接器创建消费者的参数为 Properties， 可以设置的参数列表请参考 [消费者参数](../../reference/connector/java/#消费者)
|
||||
其他参数请参考上文通用基础配置项。
|
||||
|
||||
|
||||
|
|
@ -56,24 +56,43 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
创建消费者支持属性列表：
|
||||
|
||||
- `ws.url`：WebSocket 连接地址。
|
||||
- `ws.message.channelLen`：WebSocket 消息通道缓存长度，默认 0。
|
||||
- `ws.message.timeout`：WebSocket 消息超时时间，默认 5m。
|
||||
- `ws.message.writeWait`：WebSocket 写入消息超时时间，默认 10s。
|
||||
- `ws.message.enableCompression`：WebSocket 是否启用压缩，默认 false。
|
||||
- `ws.autoReconnect`：WebSocket 是否自动重连，默认 false。
|
||||
- `ws.reconnectIntervalMs`：WebSocket 重连间隔时间毫秒，默认 2000。
|
||||
- `ws.reconnectRetryCount`：WebSocket 重连重试次数，默认 3。
|
||||
|
||||
其他参数见上表。
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Rust" value="rust">
|
||||
Rust 连接器创建消费者的参数为 DSN， 可以设置的参数列表请参考 [DSN](../../reference/connector/rust/#dsn)
|
||||
其他参数请参考上文通用基础配置项。
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="C#" value="csharp">
|
||||
创建消费者支持属性列表：
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="R" value="r">
|
||||
- `useSSL`：是否使用 SSL 连接，默认为 false。
|
||||
- `token`：连接 TDengine cloud 的 token。
|
||||
- `ws.message.enableCompression`：是否启用 WebSocket 压缩，默认为 false。
|
||||
- `ws.autoReconnect`：是否自动重连，默认为 false。
|
||||
- `ws.reconnect.retry.count`：重连次数，默认为 3。
|
||||
- `ws.reconnect.interval.ms`：重连间隔毫秒时间，默认为 2000。
|
||||
|
||||
其他参数见上表。
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -97,31 +116,39 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go:create_consumer}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/tmq.rs:create_consumer_dsn}}
|
||||
```
|
||||
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/tmq.rs:create_consumer_ac}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_example.js:create_consumer}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs:create_consumer}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -149,28 +176,32 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go:create_consumer}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:create_consumer_dsn}}
|
||||
```
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:create_consumer_ac}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs:create_consumer}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## 订阅消费数据
|
||||
|
|
@ -197,31 +228,35 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go:subscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
消费者可订阅一个或多个 `TOPIC`，一般建议一个消费者只订阅一个 `TOPIC`。
|
||||
TMQ 消息队列是一个 [futures::Stream](https://docs.rs/futures/latest/futures/stream/index.html) 类型，可以使用相应 API 对每个消息进行消费，并通过 `.commit` 进行已消费标记。
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/tmq.rs:consume}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_seek_example.js:subscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs:subscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -241,28 +276,25 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go:subscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
同 Websocket 示例代码
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs:subscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## 指定订阅的 Offset
|
||||
|
|
@ -275,6 +307,10 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
```java
|
||||
{{#include examples/JDBC/JDBCDemo/src/main/java/com/taosdata/example/WsConsumerLoopFull.java:consumer_seek}}
|
||||
```
|
||||
1. 使用 consumer.poll 方法轮询数据，直到获取到数据为止。
|
||||
2. 对于轮询到的第一批数据，打印第一条数据的内容，并获取当前消费者的分区分配信息。
|
||||
3. 使用 consumer.seekToBeginning 方法将所有分区的偏移量重置到开始位置，并打印成功重置的消息。
|
||||
4. 再次使用 consumer.poll 方法轮询数据，并打印第一条数据的内容。
|
||||
|
||||
</TabItem>
|
||||
|
||||
|
|
@ -286,32 +322,42 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go:seek}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:seek_offset}}
|
||||
```
|
||||
|
||||
1. 通过调用 consumer.assignments() 方法获取消费者当前的分区分配信息，并记录初始分配状态。
|
||||
2. 遍历每个分区分配信息，对于每个分区：提取主题（topic）、消费组ID（vgroup_id）、当前偏移量（current）、起始偏移量（begin）和结束偏移量（end）。
|
||||
记录这些信息。
|
||||
1. 调用 consumer.offset_seek 方法将偏移量设置到起始位置。如果操作失败，记录错误信息和当前分配状态。
|
||||
2. 在所有分区的偏移量调整完成后，再次获取并记录消费者的分区分配信息，以确认偏移量调整后的状态。
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_seek_example.js:offset}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs:seek}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
|
|
@ -330,27 +376,23 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go:seek}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
同 Websocket 代码样例。
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs:seek}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
|
|
@ -358,6 +400,9 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
## 提交 Offset
|
||||
当消费者读取并处理完消息后，它可以提交 Offset，这表示消费者已经成功处理到这个 Offset 的消息。Offset 提交可以是自动的（根据配置定期提交）或手动的（应用程序控制何时提交）。
|
||||
当创建消费者时，属性 `enable.auto.commit` 为 false 时，可以手动提交 offset。
|
||||
|
||||
**注意**：手工提交消费进度前确保消息正常处理完成，否则处理出错的消息不会被再次消费。自动提交是在本次 `poll` 消息时可能会提交上次消息的消费进度，因此请确保消息处理完毕再进行下一次 `poll` 或消息获取。
|
||||
|
||||
### Websocket 连接
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem value="java" label="Java">
|
||||
|
|
@ -377,33 +422,35 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go:commit_offset}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/subscribe_demo.rs:consumer_commit_manually}}
|
||||
```
|
||||
|
||||
可以通过 `consumer.commit` 方法来手工提交消费进度。
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_example.js:commit}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs:commit_offset}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
|
|
@ -423,11 +470,13 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go:commit_offset}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
同 Websocket 代码样例。
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
|
@ -435,21 +484,14 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs:commit_offset}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
|
||||
|
|
@ -474,37 +516,40 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go:close}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/tmq.rs:unsubscribe}}
|
||||
```
|
||||
|
||||
**注意**：消费者取消订阅后无法重用，如果想订阅新的 `topic`， 请重新创建消费者。
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_example.js:unsubscribe}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs:close}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
<Tabs groupId="lang">
|
||||
<Tabs defaultValue="java" groupId="lang">
|
||||
<TabItem value="java" label="Java">
|
||||
|
||||
同 Websocket 代码样例。
|
||||
|
|
@ -519,11 +564,13 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go:close}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
同 Websocket 代码样例。
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
|
@ -531,21 +578,15 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs:close}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
|
||||
|
|
@ -571,33 +612,34 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/ws/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/restexample/examples/subscribe_demo.rs}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
||||
```js
|
||||
{{#include docs/examples/node/websocketexample/tmq_example.js}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/wssubscribe/Program.cs}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
||||
### 原生连接
|
||||
|
|
@ -624,11 +666,15 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="Go" value="go">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/tmq/native/main.go}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Rust" value="rust">
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/subscribe_demo.rs}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="Node.js" value="node">
|
||||
|
|
@ -636,19 +682,12 @@ Java 连接器创建消费者的参数为 Properties， 可以设置的参数列
|
|||
</TabItem>
|
||||
|
||||
<TabItem label="C#" value="csharp">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="R" value="r">
|
||||
|
||||
```csharp
|
||||
{{#include docs/examples/csharp/subscribe/Program.cs}}
|
||||
```
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="C" value="c">
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem label="PHP" value="php">
|
||||
|
||||
</TabItem>
|
||||
|
||||
</Tabs>
|
||||
|
|
|
|||
|
|
@ -12,16 +12,6 @@ import RequestId from "./_request_id.mdx";
|
|||
|
||||
`driver-go` 是 TDengine 的官方 Go 语言连接器，实现了 Go 语言 [database/sql](https://golang.org/pkg/database/sql/) 包的接口。Go 开发人员可以通过它开发存取 TDengine 集群数据的应用软件。
|
||||
|
||||
## 连接方式
|
||||
|
||||
`driver-go` 提供三种建立连接的方式。
|
||||
|
||||
* **原生连接**，通过 TDengine 客户端驱动程序（taosc）原生连接 TDengine 实例，支持数据写入、查询、数据订阅、schemaless 接口和参数绑定接口等功能。
|
||||
* **REST 连接**，通过 taosAdapter 提供的 HTTP 接口连接 TDengine 实例，不支持 schemaless 和数据订阅等特性。
|
||||
* **Websocket 连接**，通过 taosAdapter 提供的 Websocket 接口连接 TDengine 实例，WebSocket 连接实现的功能集合和原生连接有少量不同。
|
||||
|
||||
连接方式的详细介绍请参考：[连接器建立连接的方式](../../develop/connect/#连接器建立连接的方式)
|
||||
|
||||
## 兼容性
|
||||
|
||||
支持最低 Go 版本 1.14，建议使用最新 Go 版本
|
||||
|
|
@ -52,7 +42,7 @@ REST 连接支持所有能运行 Go 的平台。
|
|||
}
|
||||
```
|
||||
|
||||
## TDengine DataType 和 Go DataType
|
||||
## 数据类型映射
|
||||
|
||||
| TDengine DataType | Go Type |
|
||||
|-------------------|-----------|
|
||||
|
|
@ -74,300 +64,6 @@ REST 连接支持所有能运行 Go 的平台。
|
|||
|
||||
**注意**：JSON 类型仅在 tag 中支持。
|
||||
|
||||
## 安装步骤
|
||||
|
||||
### 安装前准备
|
||||
|
||||
* 安装 Go 开发环境（Go 1.14 及以上，GCC 4.8.5 及以上）
|
||||
* 如果使用原生连接器，请安装 TDengine 客户端驱动，具体步骤请参考[安装客户端驱动](../#安装客户端驱动)
|
||||
|
||||
配置好环境变量，检查命令：
|
||||
|
||||
* ```go env```
|
||||
* ```gcc -v```
|
||||
|
||||
### 安装连接器
|
||||
|
||||
1. 使用 `go mod` 命令初始化项目：
|
||||
|
||||
```text
|
||||
go mod init taos-demo
|
||||
```
|
||||
|
||||
2. 引入 taosSql ：
|
||||
|
||||
```go
|
||||
import (
|
||||
"database/sql"
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
```
|
||||
|
||||
3. 使用 `go mod tidy` 更新依赖包：
|
||||
|
||||
```text
|
||||
go mod tidy
|
||||
```
|
||||
|
||||
4. 使用 `go run taos-demo` 运行程序或使用 `go build` 命令编译出二进制文件。
|
||||
|
||||
```text
|
||||
go run taos-demo
|
||||
go build
|
||||
```
|
||||
|
||||
## 建立连接
|
||||
|
||||
数据源名称具有通用格式，例如 [PEAR DB](http://pear.php.net/manual/en/package.database.db.intro-dsn.php)，但没有类型前缀（方括号表示可选）：
|
||||
|
||||
``` text
|
||||
[username[:password]@][protocol[(address)]]/[dbname][?param1=value1&...¶mN=valueN]
|
||||
```
|
||||
|
||||
完整形式的 DSN：
|
||||
|
||||
```text
|
||||
username:password@protocol(address)/dbname?param=value
|
||||
```
|
||||
|
||||
<Tabs defaultValue="rest" groupId="connect">
|
||||
<TabItem value="native" label="原生连接">
|
||||
|
||||
_taosSql_ 通过 cgo 实现了 Go 的 `database/sql/driver` 接口。只需要引入驱动就可以使用 [`database/sql`](https://golang.org/pkg/database/sql/) 的接口。
|
||||
|
||||
使用 `taosSql` 作为 `driverName` 并且使用一个正确的 [DSN](#DSN) 作为 `dataSourceName`，DSN 支持的参数：
|
||||
|
||||
* cfg 指定 taos.cfg 目录
|
||||
|
||||
示例：
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosSql"
|
||||
)
|
||||
|
||||
func main() {
|
||||
var taosUri = "root:taosdata@tcp(localhost:6030)/"
|
||||
taos, err := sql.Open("taosSql", taosUri)
|
||||
if err != nil {
|
||||
fmt.Println("failed to connect TDengine, err:", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="rest" label="REST 连接">
|
||||
|
||||
_taosRestful_ 通过 `http client` 实现了 Go 的 `database/sql/driver` 接口。只需要引入驱动就可以使用[`database/sql`](https://golang.org/pkg/database/sql/)的接口。
|
||||
|
||||
使用 `taosRestful` 作为 `driverName` 并且使用一个正确的 [DSN](#DSN) 作为 `dataSourceName`，DSN 支持的参数：
|
||||
|
||||
* `disableCompression` 是否接受压缩数据，默认为 true 不接受压缩数据，如果传输数据使用 gzip 压缩设置为 false。
|
||||
* `readBufferSize` 读取数据的缓存区大小默认为 4K（4096），当查询结果数据量多时可以适当调大该值。
|
||||
|
||||
示例：
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosRestful"
|
||||
)
|
||||
|
||||
func main() {
|
||||
var taosUri = "root:taosdata@http(localhost:6041)/"
|
||||
taos, err := sql.Open("taosRestful", taosUri)
|
||||
if err != nil {
|
||||
fmt.Println("failed to connect TDengine, err:", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="WebSocket" label="WebSocket 连接">
|
||||
|
||||
_taosWS_ 通过 `WebSocket` 实现了 Go 的 `database/sql/driver` 接口。只需要引入驱动（driver-go 最低版本 3.0.2）就可以使用[`database/sql`](https://golang.org/pkg/database/sql/)的接口。
|
||||
|
||||
使用 `taosWS` 作为 `driverName` 并且使用一个正确的 [DSN](#DSN) 作为 `dataSourceName`，DSN 支持的参数：
|
||||
|
||||
* `writeTimeout` 通过 WebSocket 发送数据的超时时间。
|
||||
* `readTimeout` 通过 WebSocket 接收响应数据的超时时间。
|
||||
|
||||
示例：
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"fmt"
|
||||
|
||||
_ "github.com/taosdata/driver-go/v3/taosWS"
|
||||
)
|
||||
|
||||
func main() {
|
||||
var taosUri = "root:taosdata@ws(localhost:6041)/"
|
||||
taos, err := sql.Open("taosWS", taosUri)
|
||||
if err != nil {
|
||||
fmt.Println("failed to connect TDengine, err:", err)
|
||||
return
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 指定 URL 和 Properties 获取连接
|
||||
|
||||
Go 连接器不支持此功能
|
||||
|
||||
### 配置参数的优先级
|
||||
|
||||
Go 连接器不支持此功能
|
||||
|
||||
## 使用示例
|
||||
|
||||
### 创建数据库和表
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/query/main.go:create_db_and_table}}
|
||||
```
|
||||
|
||||
### 插入数据
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/query/main.go:insert_data}}
|
||||
```
|
||||
|
||||
### 查询数据
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/query/main.go:query_data}}
|
||||
```
|
||||
|
||||
### 执行带有 reqId 的 SQL
|
||||
|
||||
<RequestId />
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/query/main.go:with_reqid}}
|
||||
```
|
||||
|
||||
### 通过参数绑定写入数据
|
||||
|
||||
<Tabs defaultValue="native" groupId="connect">
|
||||
<TabItem value="native" label="原生连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/stmt/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="WebSocket" label="WebSocket 连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/stmtws/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 无模式写入
|
||||
|
||||
<Tabs defaultValue="native" groupId="connect">
|
||||
<TabItem value="native" label="原生连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/sml/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="WebSocket" label="WebSocket 连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/smlws/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 执行带有 reqId 的无模式写入
|
||||
|
||||
```go
|
||||
func (s *Schemaless) Insert(lines string, protocol int, precision string, ttl int, reqID int64) error
|
||||
```
|
||||
|
||||
可以通过 `common.GetReqID()` 获取唯一 id。
|
||||
|
||||
### 数据订阅
|
||||
|
||||
TDengine Go 连接器支持订阅功能，应用 API 如下：
|
||||
|
||||
#### 创建 Topic
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go:create_topic}}
|
||||
```
|
||||
|
||||
#### 创建 Consumer
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go:create_consumer}}
|
||||
```
|
||||
|
||||
#### 订阅消费数据
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go:poll_data}}
|
||||
```
|
||||
|
||||
#### 指定订阅 Offset
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go:consumer_seek}}
|
||||
```
|
||||
|
||||
#### 关闭订阅
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go:consumer_close}}
|
||||
```
|
||||
|
||||
#### 完整示例
|
||||
|
||||
<Tabs defaultValue="native" groupId="connect">
|
||||
<TabItem value="native" label="原生连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumer/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
<TabItem value="WebSocket" label="WebSocket 连接">
|
||||
|
||||
```go
|
||||
{{#include docs/examples/go/demo/consumerws/main.go}}
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
### 更多示例程序
|
||||
|
||||
* [示例程序](https://github.com/taosdata/driver-go/tree/3.0/examples)
|
||||
* [视频教程](https://www.taosdata.com/blog/2020/11/11/1951.html)。
|
||||
|
||||
## 常见问题
|
||||
|
||||
1. database/sql 中 stmt（参数绑定）相关接口崩溃
|
||||
|
|
@ -1065,7 +761,7 @@ type ConfigMap map[string]ConfigValue
|
|||
- `ws.reconnectIntervalMs`：WebSocket 重连间隔时间毫秒，默认 2000。
|
||||
- `ws.reconnectRetryCount`：WebSocket 重连重试次数，默认 3。
|
||||
|
||||
其他参数请参考：[Consumer 参数列表](../../../develop/tmq/#数据订阅相关参数)， 注意TDengine服务端自 3.2.0.0 版本开始消息订阅中的 auto.offset.reset 默认值发生变化。
|
||||
其他参数请参考：[Consumer 参数列表](../../../develop/tmq/#创建参数)， 注意TDengine服务端自 3.2.0.0 版本开始消息订阅中的 auto.offset.reset 默认值发生变化。
|
||||
|
||||
- `func (c *Consumer) Subscribe(topic string, rebalanceCb RebalanceCb) error`
|
||||
- **接口说明**：订阅主题。
|
||||
|
|
@ -1195,4 +891,6 @@ type TopicPartition struct {
|
|||
|
||||
## 附录
|
||||
|
||||
[driver-go 文档](https://pkg.go.dev/github.com/taosdata/driver-go/v3)
|
||||
* [driver-go 文档](https://pkg.go.dev/github.com/taosdata/driver-go/v3)。
|
||||
* [示例程序](https://github.com/taosdata/driver-go/tree/3.0/examples)。
|
||||
* [视频教程](https://www.taosdata.com/blog/2020/11/11/1951.html)。
|
||||
|
|
|
|||
|
|
@ -82,360 +82,7 @@ TDengine 目前支持时间戳、数字、字符、布尔类型，与 Rust 对
|
|||
|
||||
**注意**：JSON 类型仅在 tag 中支持。
|
||||
|
||||
## 安装步骤
|
||||
|
||||
### 安装前准备
|
||||
|
||||
* 安装 Rust 开发工具链
|
||||
* 如果使用原生连接，请安装 TDengine 客户端驱动，具体步骤请参考[安装客户端驱动](../#安装客户端驱动)
|
||||
|
||||
### 安装连接器
|
||||
|
||||
根据选择的连接方式，按照如下说明在 [Rust](https://rust-lang.org) 项目中添加 [taos][taos] 依赖：
|
||||
|
||||
<Tabs defaultValue="default">
|
||||
<TabItem value="default" label="同时支持">
|
||||
|
||||
在 `Cargo.toml` 文件中添加 [taos][taos]：
|
||||
|
||||
```toml
|
||||
[dependencies]
|
||||
# use default feature
|
||||
taos = "*"
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem value="rest" label="仅 Websocket">
|
||||
|
||||
在 `Cargo.toml` 文件中添加 [taos][taos]，并启用 `ws` 特性。
|
||||
|
||||
```toml
|
||||
[dependencies]
|
||||
taos = { version = "*", default-features = false, features = ["ws"] }
|
||||
```
|
||||
|
||||
当仅启用 `ws` 特性时，可同时指定 `r2d2` 使得在同步（blocking/sync）模式下使用 [r2d2] 作为连接池：
|
||||
|
||||
```toml
|
||||
[dependencies]
|
||||
taos = { version = "*", default-features = false, features = ["r2d2", "ws"] }
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
|
||||
<TabItem value="native" label="仅原生连接">
|
||||
|
||||
在 `Cargo.toml` 文件中添加 [taos][taos]，并启用 `native` 特性：
|
||||
|
||||
```toml
|
||||
[dependencies]
|
||||
taos = { version = "*", default-features = false, features = ["native"] }
|
||||
```
|
||||
|
||||
</TabItem>
|
||||
</Tabs>
|
||||
|
||||
## 建立连接
|
||||
|
||||
[TaosBuilder] 通过 DSN 连接描述字符串创建一个连接构造器。
|
||||
|
||||
```rust
|
||||
let builder = TaosBuilder::from_dsn("taos://")?;
|
||||
```
|
||||
|
||||
现在您可以使用该对象创建连接：
|
||||
|
||||
```rust
|
||||
let conn = builder.build()?;
|
||||
```
|
||||
|
||||
连接对象可以创建多个：
|
||||
|
||||
```rust
|
||||
let conn1 = builder.build()?;
|
||||
let conn2 = builder.build()?;
|
||||
```
|
||||
|
||||
DSN 描述字符串基本结构如下：
|
||||
|
||||
```text
|
||||
<driver>[+<protocol>]://[[<username>:<password>@]<host>:<port>][/<database>][?<p1>=<v1>[&<p2>=<v2>]]
|
||||
|------|------------|---|-----------|-----------|------|------|------------|-----------------------|
|
||||
|driver| protocol | | username | password | host | port | database | params |
|
||||
```
|
||||
|
||||
各部分意义见下表：
|
||||
|
||||
- **driver**: 必须指定驱动名以便连接器选择何种方式创建连接，支持如下驱动名：
|
||||
- **taos**: 表名使用 TDengine 连接器驱动。
|
||||
- **tmq**: 使用 TMQ 订阅数据。
|
||||
- **http/ws**: 使用 Websocket 创建连接。
|
||||
- **https/wss**: 在 Websocket 连接方式下显示启用 SSL/TLS 连接。
|
||||
- **protocol**: 显示指定以何种方式建立连接，例如：`taos+ws://localhost:6041` 指定以 Websocket 方式建立连接。
|
||||
- **username/password**: 用于创建连接的用户名及密码。
|
||||
- **host/port**: 指定创建连接的服务器及端口，当不指定服务器地址及端口时（`taos://`），原生连接默认为 `localhost:6030`，Websocket 连接默认为 `localhost:6041` 。
|
||||
- **database**: 指定默认连接的数据库名，可选参数。
|
||||
- **params**：其他可选参数。
|
||||
|
||||
一个完整的 DSN 描述字符串示例如下：
|
||||
|
||||
```text
|
||||
taos+ws://localhost:6041/test
|
||||
```
|
||||
|
||||
表示使用 Websocket（`ws`）方式通过 `6041` 端口连接服务器 `localhost`，并指定默认数据库为 `test`。
|
||||
|
||||
这使得用户可以通过 DSN 指定连接方式：
|
||||
|
||||
```rust
|
||||
use taos::*;
|
||||
|
||||
// use native protocol.
|
||||
let builder = TaosBuilder::from_dsn("taos://localhost:6030")?;
|
||||
let conn1 = builder.build();
|
||||
|
||||
// use websocket protocol.
|
||||
let builder2 = TaosBuilder::from_dsn("taos+ws://localhost:6041")?;
|
||||
let conn2 = builder2.build();
|
||||
```
|
||||
|
||||
建立连接后，您可以进行相关数据库操作：
|
||||
|
||||
```rust
|
||||
async fn demo(taos: &Taos, db: &str) -> Result<(), Error> {
|
||||
// prepare database
|
||||
taos.exec_many([
|
||||
format!("DROP DATABASE IF EXISTS `{db}`"),
|
||||
format!("CREATE DATABASE `{db}`"),
|
||||
format!("USE `{db}`"),
|
||||
])
|
||||
.await?;
|
||||
|
||||
let inserted = taos.exec_many([
|
||||
// create super table
|
||||
"CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) \
|
||||
TAGS (`groupid` INT, `location` BINARY(24))",
|
||||
// create child table
|
||||
"CREATE TABLE `d0` USING `meters` TAGS(0, 'California.LosAngles')",
|
||||
// insert into child table
|
||||
"INSERT INTO `d0` values(now - 10s, 10, 116, 0.32)",
|
||||
// insert with NULL values
|
||||
"INSERT INTO `d0` values(now - 8s, NULL, NULL, NULL)",
|
||||
// insert and automatically create table with tags if not exists
|
||||
"INSERT INTO `d1` USING `meters` TAGS(1, 'California.SanFrancisco') values(now - 9s, 10.1, 119, 0.33)",
|
||||
// insert many records in a single sql
|
||||
"INSERT INTO `d1` values (now-8s, 10, 120, 0.33) (now - 6s, 10, 119, 0.34) (now - 4s, 11.2, 118, 0.322)",
|
||||
]).await?;
|
||||
|
||||
assert_eq!(inserted, 6);
|
||||
let mut result = taos.query("select * from `meters`").await?;
|
||||
|
||||
for field in result.fields() {
|
||||
println!("got field: {}", field.name());
|
||||
}
|
||||
|
||||
let values = result.
|
||||
}
|
||||
```
|
||||
|
||||
查询数据可以通过两种方式：使用内建类型或 [serde](https://serde.rs) 序列化框架。
|
||||
|
||||
```rust
|
||||
// Query option 1, use rows stream.
|
||||
let mut rows = result.rows();
|
||||
while let Some(row) = rows.try_next().await? {
|
||||
for (name, value) in row {
|
||||
println!("got value of {}: {}", name, value);
|
||||
}
|
||||
}
|
||||
|
||||
// Query options 2, use deserialization with serde.
|
||||
#[derive(Debug, serde::Deserialize)]
|
||||
#[allow(dead_code)]
|
||||
struct Record {
|
||||
// deserialize timestamp to chrono::DateTime<Local>
|
||||
ts: DateTime<Local>,
|
||||
// float to f32
|
||||
current: Option<f32>,
|
||||
// int to i32
|
||||
voltage: Option<i32>,
|
||||
phase: Option<f32>,
|
||||
groupid: i32,
|
||||
// binary/varchar to String
|
||||
location: String,
|
||||
}
|
||||
|
||||
let records: Vec<Record> = taos
|
||||
.query("select * from `meters`")
|
||||
.await?
|
||||
.deserialize()
|
||||
.try_collect()
|
||||
.await?;
|
||||
|
||||
dbg!(records);
|
||||
Ok(())
|
||||
```
|
||||
|
||||
## 使用示例
|
||||
|
||||
### 创建数据库和表
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:create_db_and_table}}
|
||||
```
|
||||
|
||||
> **注意**：如果不使用 `use db` 指定数据库，则后续对表的操作都需要增加数据库名称作为前缀，如 db.tb。
|
||||
|
||||
### 插入数据
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:insert_data}}
|
||||
```
|
||||
|
||||
### 查询数据
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:query_data}}
|
||||
```
|
||||
|
||||
### 执行带有 req_id 的 SQL
|
||||
|
||||
<RequestId />
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/query.rs:query_with_req_id}}
|
||||
```
|
||||
|
||||
### 通过参数绑定写入数据
|
||||
|
||||
TDengine 的 Rust 连接器实现了参数绑定方式对数据写入（INSERT）场景的支持。采用这种方式写入数据时，能避免 SQL 语法解析的资源消耗，从而在很多情况下显著提升写入性能。
|
||||
|
||||
参数绑定接口详见[API参考](#stmt-api)
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/stmt.rs}}
|
||||
```
|
||||
|
||||
### 无模式写入
|
||||
|
||||
TDengine 支持无模式写入功能。无模式写入兼容 InfluxDB 的 行协议（Line Protocol）、OpenTSDB 的 telnet 行协议和 OpenTSDB 的 JSON 格式协议。详情请参见[无模式写入](../../reference/schemaless/)。
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/schemaless.rs}}
|
||||
```
|
||||
|
||||
### 执行带有 req_id 的无模式写入
|
||||
|
||||
此 req_id 可用于请求链路追踪。
|
||||
|
||||
```rust
|
||||
let sml_data = SmlDataBuilder::default()
|
||||
.protocol(SchemalessProtocol::Line)
|
||||
.data(data)
|
||||
.req_id(100u64)
|
||||
.build()?;
|
||||
|
||||
client.put(&sml_data)?
|
||||
```
|
||||
|
||||
### 数据订阅
|
||||
|
||||
TDengine 通过消息队列 [TMQ](../../taos-sql/tmq/) 启动一个订阅。
|
||||
|
||||
#### 创建 Topic
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:create_topic}}
|
||||
```
|
||||
|
||||
#### 创建 Consumer
|
||||
|
||||
创建消费者：
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:create_consumer}}
|
||||
```
|
||||
|
||||
#### 订阅消费数据
|
||||
|
||||
消费者可订阅一个或多个 `TOPIC`。
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:subscribe}}
|
||||
```
|
||||
|
||||
TMQ 消息队列是一个 [futures::Stream](https://docs.rs/futures/latest/futures/stream/index.html) 类型，可以使用相应 API 对每个消息进行消费，并通过 `.commit` 进行已消费标记。
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:consume}}
|
||||
```
|
||||
|
||||
获取消费进度：
|
||||
|
||||
版本要求 connector-rust >= v0.8.8， TDengine >= 3.0.5.0
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:assignments}}
|
||||
```
|
||||
|
||||
#### 指定订阅 Offset
|
||||
|
||||
按照指定的进度消费：
|
||||
|
||||
版本要求 connector-rust >= v0.8.8， TDengine >= 3.0.5.0
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:seek_offset}}
|
||||
```
|
||||
|
||||
#### 关闭订阅
|
||||
|
||||
```rust
|
||||
{{#include docs/examples/rust/nativeexample/examples/tmq.rs:unsubscribe}}
|
||||
```
|
||||
|
||||
对于 TMQ DSN, 有以下配置项可以进行设置，需要注意的是，`group.id` 是必须的。
|
||||
|
||||
- `group.id`: 同一个消费者组，将以至少消费一次的方式进行消息负载均衡。
|
||||
- `client.id`: 可选的订阅客户端识别项。
|
||||
- `auto.offset.reset`: 可选初始化订阅起点， *earliest* 为从头开始订阅， *latest* 为仅从最新数据开始订阅，默认值根据 TDengine 版本有所不同，详细参见 [数据订阅](https://docs.taosdata.com/develop/tmq/)。注意，此选项在同一个 `group.id` 中仅生效一次。
|
||||
- `enable.auto.commit`: 当设置为 `true` 时，将启用自动标记模式，当对数据一致性不敏感时，可以启用此方式。
|
||||
- `auto.commit.interval.ms`: 自动标记的时间间隔。
|
||||
|
||||
#### 完整示例
|
||||
|
||||
完整订阅示例参见 [GitHub 示例文件](https://github.com/taosdata/TDengine/blob/3.0/docs/examples/rust/nativeexample/examples/tmq.rs).
|
||||
|
||||
### 与连接池使用
|
||||
|
||||
在复杂应用中，建议启用连接池。[taos] 的连接池默认（异步模式）使用 [deadpool] 实现。
|
||||
|
||||
如下，可以生成一个默认参数的连接池。
|
||||
|
||||
```rust
|
||||
let pool: Pool<TaosBuilder> = TaosBuilder::from_dsn("taos:///")
|
||||
.unwrap()
|
||||
.pool()
|
||||
.unwrap();
|
||||
```
|
||||
|
||||
同样可以使用连接池的构造器，对连接池参数进行设置：
|
||||
|
||||
```rust
|
||||
let pool: Pool<TaosBuilder> = Pool::builder(Manager::from_dsn(self.dsn.clone()).unwrap().0)
|
||||
.max_size(88) // 最大连接数
|
||||
.build()
|
||||
.unwrap();
|
||||
```
|
||||
|
||||
在应用代码中，使用 `pool.get()?` 来获取一个连接对象 [Taos]。
|
||||
|
||||
```rust
|
||||
let taos = pool.get()?;
|
||||
```
|
||||
|
||||
### 更多示例程序
|
||||
## 示例程序汇总
|
||||
|
||||
示例程序源码位于 `TDengine/examples/rust` 下:
|
||||
|
||||
|
|
@ -445,168 +92,6 @@ let taos = pool.get()?;
|
|||
|
||||
请参考 [FAQ](../../train-faq/faq)
|
||||
|
||||
## API 参考
|
||||
|
||||
[Taos][struct.Taos] 对象提供了多个数据库操作的 API：
|
||||
|
||||
1. `exec`: 执行某个非查询类 SQL 语句，例如 `CREATE`，`ALTER`，`INSERT` 等。
|
||||
|
||||
```rust
|
||||
let affected_rows = taos.exec("INSERT INTO tb1 VALUES(now, NULL)").await?;
|
||||
```
|
||||
|
||||
2. `exec_many`: 同时（顺序）执行多个 SQL 语句。
|
||||
|
||||
```rust
|
||||
taos.exec_many([
|
||||
"CREATE DATABASE test",
|
||||
"USE test",
|
||||
"CREATE TABLE `tb1` (`ts` TIMESTAMP, `val` INT)",
|
||||
]).await?;
|
||||
```
|
||||
|
||||
3. `query`：执行查询语句，返回 [ResultSet] 对象。
|
||||
|
||||
```rust
|
||||
let mut q = taos.query("select * from log.logs").await?;
|
||||
```
|
||||
|
||||
[ResultSet] 对象存储了查询结果数据和返回的列的基本信息（列名，类型，长度）：
|
||||
|
||||
列信息使用 [.fields()] 方法获取：
|
||||
|
||||
```rust
|
||||
let cols = q.fields();
|
||||
for col in cols {
|
||||
println!("name: {}, type: {:?} , bytes: {}", col.name(), col.ty(), col.bytes());
|
||||
}
|
||||
```
|
||||
|
||||
逐行获取数据：
|
||||
|
||||
```rust
|
||||
let mut rows = result.rows();
|
||||
let mut nrows = 0;
|
||||
while let Some(row) = rows.try_next().await? {
|
||||
for (col, (name, value)) in row.enumerate() {
|
||||
println!(
|
||||
"[{}] got value in col {} (named `{:>8}`): {}",
|
||||
nrows, col, name, value
|
||||
);
|
||||
}
|
||||
nrows += 1;
|
||||
}
|
||||
```
|
||||
|
||||
或使用 [serde](https://serde.rs) 序列化框架。
|
||||
|
||||
```rust
|
||||
#[derive(Debug, Deserialize)]
|
||||
struct Record {
|
||||
// deserialize timestamp to chrono::DateTime<Local>
|
||||
ts: DateTime<Local>,
|
||||
// float to f32
|
||||
current: Option<f32>,
|
||||
// int to i32
|
||||
voltage: Option<i32>,
|
||||
phase: Option<f32>,
|
||||
groupid: i32,
|
||||
// binary/varchar to String
|
||||
location: String,
|
||||
}
|
||||
|
||||
let records: Vec<Record> = taos
|
||||
.query("select * from `meters`")
|
||||
.await?
|
||||
.deserialize()
|
||||
.try_collect()
|
||||
.await?;
|
||||
```
|
||||
|
||||
需要注意的是，需要使用 Rust 异步函数和异步运行时。
|
||||
|
||||
[Taos][struct.Taos] 提供部分 SQL 的 Rust 方法化以减少 `format!` 代码块的频率：
|
||||
|
||||
- `.describe(table: &str)`: 执行 `DESCRIBE` 并返回一个 Rust 数据结构。
|
||||
- `.create_database(database: &str)`: 执行 `CREATE DATABASE` 语句。
|
||||
- `.use_database(database: &str)`: 执行 `USE` 语句。
|
||||
|
||||
除此之外，该结构也是参数绑定和行协议接口的入口，使用方法请参考具体的 API 说明。
|
||||
|
||||
<p>
|
||||
<a id="stmt-api" style={{color:'#141414'}}>
|
||||
参数绑定接口
|
||||
</a>
|
||||
</p>
|
||||
|
||||
与 C 接口类似，Rust 提供参数绑定接口。首先，通过 [Taos][struct.Taos] 对象创建一个 SQL 语句的参数绑定对象 [Stmt]：
|
||||
|
||||
```rust
|
||||
let mut stmt = Stmt::init(&taos).await?;
|
||||
stmt.prepare("INSERT INTO ? USING meters TAGS(?, ?) VALUES(?, ?, ?, ?)")?;
|
||||
```
|
||||
|
||||
参数绑定对象提供了一组接口用于实现参数绑定：
|
||||
|
||||
`.set_tbname(name)`
|
||||
|
||||
用于绑定表名。
|
||||
|
||||
```rust
|
||||
let mut stmt = taos.stmt("insert into ? values(? ,?)")?;
|
||||
stmt.set_tbname("d0")?;
|
||||
```
|
||||
|
||||
`.set_tags(&[tag])`
|
||||
|
||||
当 SQL 语句使用超级表时，用于绑定子表表名和标签值：
|
||||
|
||||
```rust
|
||||
let mut stmt = taos.stmt("insert into ? using stb0 tags(?) values(? ,?)")?;
|
||||
stmt.set_tbname("d0")?;
|
||||
stmt.set_tags(&[Value::VarChar("涛思".to_string())])?;
|
||||
```
|
||||
|
||||
`.bind(&[column])`
|
||||
|
||||
用于绑定值类型。使用 [ColumnView] 结构体构建需要的类型并绑定：
|
||||
|
||||
```rust
|
||||
let params = vec![
|
||||
ColumnView::from_millis_timestamp(vec![164000000000]),
|
||||
ColumnView::from_bools(vec![true]),
|
||||
ColumnView::from_tiny_ints(vec![i8::MAX]),
|
||||
ColumnView::from_small_ints(vec![i16::MAX]),
|
||||
ColumnView::from_ints(vec![i32::MAX]),
|
||||
ColumnView::from_big_ints(vec![i64::MAX]),
|
||||
ColumnView::from_unsigned_tiny_ints(vec![u8::MAX]),
|
||||
ColumnView::from_unsigned_small_ints(vec![u16::MAX]),
|
||||
ColumnView::from_unsigned_ints(vec![u32::MAX]),
|
||||
ColumnView::from_unsigned_big_ints(vec![u64::MAX]),
|
||||
ColumnView::from_floats(vec![f32::MAX]),
|
||||
ColumnView::from_doubles(vec![f64::MAX]),
|
||||
ColumnView::from_varchar(vec!["ABC"]),
|
||||
ColumnView::from_nchar(vec!["涛思数据"]),
|
||||
];
|
||||
let rows = stmt.bind(¶ms)?.add_batch()?.execute()?;
|
||||
```
|
||||
|
||||
`.execute()`
|
||||
|
||||
执行 SQL。[Stmt] 对象可以复用，在执行后可以重新绑定并执行。执行前请确保所有数据已通过 `.add_batch` 加入到执行队列中。
|
||||
|
||||
```rust
|
||||
stmt.execute()?;
|
||||
|
||||
// next bind cycle.
|
||||
//stmt.set_tbname()?;
|
||||
//stmt.bind()?;
|
||||
//stmt.execute()?;
|
||||
```
|
||||
|
||||
一个可运行的示例请见 [GitHub 上的示例](https://github.com/taosdata/taos-connector-rust/blob/main/examples/bind.rs)。
|
||||
|
||||
|
||||
## API 参考
|
||||
|
||||
Rust 连接器的接口分为同步接口和异步接口，一般同步接口是由异步接口实现，方法签名除 async 关键字外基本相同。对于同步接口和异步接口功能一样的接口，本文档只提供同步接口的说明。
|
||||
|
|
@ -640,16 +125,16 @@ DSN 描述字符串基本结构如下：
|
|||
一个完整的 DSN 描述字符串示例如下：`taos+ws://localhost:6041/test`， 表示使用 Websocket（`ws`）方式通过 `6041` 端口连接服务器 `localhost`，并指定默认数据库为 `test`。
|
||||
|
||||
#### TaosBuilder
|
||||
TaosBuilder 结构体提供了建立连接，检查连接，以及获取服务端版本号等功能。
|
||||
TaosBuilder 结构体主要提供了根据 DSN 构建 Taos 对象的方法，还提供了检查连接，以及获取客户端版本号等功能。
|
||||
|
||||
- `fn available_params() -> &'static [&'static str]`
|
||||
- **接口说明**：获取DSN中可用的参数列表。
|
||||
- **接口说明**：获取 DSN 中可用的参数列表。
|
||||
- **返回值**：返回静态字符串切片的引用，包含可用的参数名称。
|
||||
|
||||
- `fn from_dsn<D: IntoDsn>(dsn: D) -> RawResult<Self>`
|
||||
- **接口说明**：使用DSN字符串创建连接，不检查连接。
|
||||
- **接口说明**：使用 DSN 字符串创建连接，不检查连接。
|
||||
- **参数说明**：
|
||||
- `dsn`：DSN字符串或可转换为DSN的类型。
|
||||
- `dsn`：DSN 字符串或可转换为 DSN 的类型。
|
||||
- **返回值**：成功时返回自身类型的 `RawResult`，失败时返回错误。
|
||||
|
||||
- `fn client_version() -> &'static str`
|
||||
|
|
@ -664,14 +149,15 @@ TaosBuilder 结构体提供了建立连接，检查连接，以及获取服务
|
|||
|
||||
- `fn ready(&self) -> bool`
|
||||
- **接口说明**：检查是否准备好连接。
|
||||
- **返回值**：大多数情况下返回true，表示地址准备好连接。
|
||||
- **返回值**：大多数情况下返回 `true`，表示地址准备好连接。
|
||||
|
||||
- `fn build(&self) -> RawResult<Self::Target>`
|
||||
- **接口说明**：从此结构创建新的连接。
|
||||
- **接口说明**：从此结构创建新的 Taos 对象。
|
||||
- **返回值**：成功时返回目标连接类型的 `RawResult`，失败时返回错误。
|
||||
|
||||
### 执行 SQL
|
||||
执行 SQL 主要涉及到 Taos 结构体，以及结果集 ResultSet 结构体，还有列信息 Field。
|
||||
执行 SQL 主要使用 Taos 结构体，获取结果集以及元数据需要使用下节介绍的 ResultSet 结构体 和列信息 Field 结构体。
|
||||
|
||||
#### Taos
|
||||
Taos 结构体提供了多个数据库操作的 API，包括：执行 SQL，无模式写入，以及一些常用数据库查询的封装（如创建数据库，获取）
|
||||
|
||||
|
|
@ -684,34 +170,34 @@ Taos 结构体提供了多个数据库操作的 API，包括：执行 SQL，无
|
|||
- **返回值**：如果使用websocket协议，则返回 `true`，否则返回 `false`。
|
||||
|
||||
- `fn query<T: AsRef<str>>(&self, sql: T) -> RawResult<Self::ResultSet>`
|
||||
- **接口说明**：执行SQL查询。
|
||||
- **接口说明**：执行 SQL 查询。
|
||||
- **参数说明**：
|
||||
- `sql`：要执行的SQL语句。
|
||||
- `sql`：要执行的 SQL 语句。
|
||||
- **返回值**：成功时返回结果集 `ResultSet` 的 `RawResult`，失败时返回错误。
|
||||
|
||||
- `fn query_with_req_id<T: AsRef<str>>(&self, sql: T, req_id: u64) -> RawResult<Self::ResultSet>`
|
||||
- **接口说明**：带请求ID执行SQL查询。
|
||||
- **接口说明**：带请求 ID 执行 SQL 查询。
|
||||
- **参数说明**：
|
||||
- `sql`：要执行的SQL语句。
|
||||
- `req_id`：请求ID。
|
||||
- `sql`：要执行的 SQL 语句。
|
||||
- `req_id`：请求 ID。
|
||||
- **返回值**：成功时返回结果集 `ResultSet` 的 `RawResult`，失败时返回错误。
|
||||
|
||||
- `fn exec<T: AsRef<str>>(&self, sql: T) -> RawResult<usize>`
|
||||
- **接口说明**：执行SQL语句。
|
||||
- **接口说明**：执行 SQL 语句。
|
||||
- **参数说明**：
|
||||
- `sql`：要执行的SQL语句。
|
||||
- `sql`：要执行的 SQL 语句。
|
||||
- **返回值**：成功时返回受影响的行数，失败时返回错误。
|
||||
|
||||
- `fn exec_many<T: AsRef<str>, I: IntoIterator<Item = T>>(&self, input: I) -> RawResult<usize>`
|
||||
- **接口说明**：批量执行SQL语句。
|
||||
- **接口说明**：批量执行 SQL 语句。
|
||||
- **参数说明**：
|
||||
- `input`：要执行的SQL语句集合。
|
||||
- `input`：要执行的 SQL 语句集合。
|
||||
- **返回值**：成功时返回总共受影响的行数，失败时返回错误。
|
||||
|
||||
- `fn query_one<T: AsRef<str>, O: DeserializeOwned>(&self, sql: T) -> RawResult<Option<O>>`
|
||||
- **接口说明**：执行SQL查询并返回单个结果。
|
||||
- **接口说明**：执行 SQL 查询并返回单个结果。
|
||||
- **参数说明**：
|
||||
- `sql`：要执行的SQL语句。
|
||||
- `sql`：要执行的 SQL 语句。
|
||||
- **返回值**：成功时返回可选的结果对象，失败时返回错误。
|
||||
|
||||
- `fn server_version(&self) -> RawResult<Cow<str>>`
|
||||
|
|
@ -722,7 +208,7 @@ Taos 结构体提供了多个数据库操作的 API，包括：执行 SQL，无
|
|||
- **接口说明**：创建主题。
|
||||
- **参数说明**：
|
||||
- `name`：主题名称。
|
||||
- `sql`：关联的SQL语句。
|
||||
- `sql`：关联的 SQ L语句。
|
||||
- **返回值**：成功时返回空的 `RawResult`，失败时返回错误。
|
||||
|
||||
- `fn databases(&self) -> RawResult<Vec<ShowDatabase>>`
|
||||
|
|
@ -737,7 +223,7 @@ Taos 结构体提供了多个数据库操作的 API，包括：执行 SQL，无
|
|||
- **接口说明**：描述表结构。
|
||||
- **参数说明**：
|
||||
- `table`：表名称。
|
||||
- **返回值**：成功时返回表描述的 `RawResult`，失败时返回错误。
|
||||
- **返回值**：成功时返回表结构描述的 `RawResult`，失败时返回错误。
|
||||
|
||||
- `fn database_exists(&self, name: &str) -> RawResult<bool>`
|
||||
- **接口说明**：检查数据库是否存在。
|
||||
|
|
@ -746,12 +232,43 @@ Taos 结构体提供了多个数据库操作的 API，包括：执行 SQL，无
|
|||
- **返回值**：成功时返回布尔值的 `RawResult`，指示数据库是否存在，失败时返回错误。
|
||||
|
||||
- `fn put(&self, data: &SmlData) -> RawResult<()>`
|
||||
- **接口说明**：写入无模式数据。
|
||||
- **接口说明**：写入无模式数据，SmlData 结构介绍见下文。
|
||||
- **参数说明**：
|
||||
- `data`：无模式数据。
|
||||
- **返回值**：成功时返回空的 `RawResult`，失败时返回错误。
|
||||
|
||||
### SmlData
|
||||
SmlData 结构体提供了无模式写入的数据结构，以及获取属性的方法。
|
||||
- `pub struct SmlData`
|
||||
- **结构体说明**：`SmlData` 结构体用于存储无模式数据及其相关信息。
|
||||
- **字段说明**：
|
||||
- `protocol`：无模式协议，支持 `Line`, `Telnet`, `Json`, 三种。
|
||||
- `precision`：时间戳精度，支持 `Hours`, `Minutes`, `Seconds`, `Millisecond`（默认）, `Microsecond`, `Nanosecond`。
|
||||
- `data`：数据列表。
|
||||
- `ttl`：数据存活时间，单位为秒。
|
||||
- `req_id`：请求 ID。
|
||||
|
||||
- `pub fn protocol(&self) -> SchemalessProtocol`
|
||||
- **接口说明**：获取无模式协议。
|
||||
- **返回值**：无模式协议类型，支持 `Line`, `Telnet`, `Json`, 三种。
|
||||
|
||||
- `pub fn precision(&self) -> SchemalessPrecision`
|
||||
- **接口说明**：获取时间戳精度。
|
||||
- **返回值**：时间戳精度类型，支持 `Hours`, `Minutes`, `Seconds`, `Millisecond`（默认）, `Microsecond`, `Nanosecond`。
|
||||
|
||||
- `pub fn data(&self) -> &Vec<String>`
|
||||
- **接口说明**：获取数据列表。
|
||||
- **返回值**：数据列表的引用。
|
||||
|
||||
- `pub fn ttl(&self) -> Option<i32>`
|
||||
- **接口说明**：获取数据存活时间。
|
||||
- **返回值**：数据存活时间（可选），单位为秒。
|
||||
|
||||
- `pub fn req_id(&self) -> Option<u64>`
|
||||
- **接口说明**：获取请求 ID。
|
||||
- **返回值**：请求 ID（可选）。
|
||||
|
||||
### 结果获取
|
||||
#### ResultSet
|
||||
ResultSet 结构体提供了结果集的一些方法，可以用来获取结果集的数据和元数据。
|
||||
|
||||
|
|
@ -844,16 +361,16 @@ Stmt 结构体提供了参数绑定相关功能，用于实现高效写入。
|
|||
- **返回值**：成功时返回初始化的实例，失败时返回错误。
|
||||
|
||||
- `fn init_with_req_id(taos: &Q, req_id: u64) -> RawResult<Self>`
|
||||
- **接口说明**：使用请求ID初始化参数绑定实例。
|
||||
- **接口说明**：使用请求 ID 初始化参数绑定实例。
|
||||
- **参数说明**：
|
||||
- `taos`：数据库连接实例。
|
||||
- `req_id`：请求ID。
|
||||
- `req_id`：请求 ID。
|
||||
- **返回值**：成功时返回初始化的实例，失败时返回错误。
|
||||
|
||||
- `fn prepare<S: AsRef<str>>(&mut self, sql: S) -> RawResult<&mut Self>`
|
||||
- **接口说明**：准备要绑定的 SQL 语句。
|
||||
- **参数说明**：
|
||||
- `sql`：要准备的SQL语句。
|
||||
- `sql`：要准备的 SQL 语句。
|
||||
- **返回值**：成功时返回自身的可变引用，失败时返回错误。
|
||||
|
||||
- `fn set_tbname<S: AsRef<str>>(&mut self, name: S) -> RawResult<&mut Self>`
|
||||
|
|
@ -921,7 +438,7 @@ Stmt 结构体提供了参数绑定相关功能，用于实现高效写入。
|
|||
|
||||
- `fn ready(&self) -> bool`
|
||||
- **接口说明**：检查是否准备好连接。
|
||||
- **返回值**：大多数情况下返回true，表示地址准备好连接。
|
||||
- **返回值**：大多数情况下返回 `true`，表示地址准备好连接。
|
||||
|
||||
- `fn build(&self) -> RawResult<Self::Target>`
|
||||
- **接口说明**：从此结构创建新的连接。
|
||||
|
|
@ -1002,12 +519,8 @@ Offset 结构体提供了获取当前消息所属的数据库，主题和分区
|
|||
- **接口说明**：获取当前消息的分区 ID。
|
||||
- **返回值**：分区 ID。
|
||||
|
||||
其他相关结构体 API 使用说明请移步 Rust 文档托管网页：https://docs.rs/taos。
|
||||
|
||||
[taos]: https://github.com/taosdata/rust-connector-taos
|
||||
[deadpool]: https://crates.io/crates/deadpool
|
||||
[r2d2]: https://crates.io/crates/r2d2
|
||||
[TaosBuilder]: https://docs.rs/taos/latest/taos/struct.TaosBuilder.html
|
||||
[TaosCfg]: https://docs.rs/taos/latest/taos/struct.TaosCfg.html
|
||||
[struct.Taos]: https://docs.rs/taos/latest/taos/struct.Taos.html
|
||||
[Stmt]: https://docs.rs/taos/latest/taos/struct.Stmt.html
|
||||
## 附录
|
||||
- Rust 连接器文档：https://docs.rs/taos
|
||||
- Rust 连接器项目地址: https://github.com/taosdata/rust-connector-taos
|
||||
- deadpool 连接池: https://crates.io/crates/deadpool
|
||||
- r2d2 连接池: https://crates.io/crates/r2d2
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -24,24 +24,24 @@ public abstract class AbsConsumerLoop {
|
|||
public AbsConsumerLoop() throws SQLException {
|
||||
|
||||
// ANCHOR: create_consumer
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "jni");
|
||||
config.setProperty("bootstrap.servers", "localhost:6030");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "client1");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.AbsConsumerLoop$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
try {
|
||||
this.consumer = new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create jni consumer with " + config.getProperty("bootstrap.servers") + " ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
}
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "jni");
|
||||
config.setProperty("bootstrap.servers", "localhost:6030");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "client1");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.AbsConsumerLoop$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
try {
|
||||
this.consumer = new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create jni consumer with " + config.getProperty("bootstrap.servers") + " ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
|
||||
this.topics = Collections.singletonList("topic_meters");
|
||||
|
|
@ -53,65 +53,65 @@ try {
|
|||
|
||||
public void pollDataCodePiece() throws SQLException {
|
||||
// ANCHOR: poll_data_code_piece
|
||||
try {
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
process(bean);
|
||||
try {
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
process(bean);
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
shutdownLatch.countDown();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
shutdownLatch.countDown();
|
||||
}
|
||||
// ANCHOR_END: poll_data_code_piece
|
||||
}
|
||||
|
||||
public void commitCodePiece() throws SQLException {
|
||||
// ANCHOR: commit_code_piece
|
||||
try {
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
process(bean);
|
||||
try {
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
process(bean);
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
shutdownLatch.countDown();
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
shutdownLatch.countDown();
|
||||
}
|
||||
// ANCHOR_END: commit_code_piece
|
||||
}
|
||||
|
||||
public void unsubscribeCodePiece() throws SQLException {
|
||||
// ANCHOR: unsubscribe_data_code_piece
|
||||
try {
|
||||
consumer.unsubscribe();
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to unsubscribe consumer. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
}
|
||||
try {
|
||||
consumer.unsubscribe();
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to unsubscribe consumer. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
}
|
||||
// ANCHOR_END: unsubscribe_data_code_piece
|
||||
}
|
||||
|
||||
|
|
@ -119,14 +119,14 @@ try {
|
|||
try {
|
||||
|
||||
// ANCHOR: poll_data
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
process(bean);
|
||||
}
|
||||
}
|
||||
consumer.subscribe(topics);
|
||||
while (!shutdown.get()) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
process(bean);
|
||||
}
|
||||
}
|
||||
// ANCHOR_END: poll_data
|
||||
|
||||
consumer.unsubscribe();
|
||||
|
|
|
|||
|
|
@ -15,37 +15,41 @@ import java.util.concurrent.TimeUnit;
|
|||
public class ConsumerLoopFull {
|
||||
static private Connection connection;
|
||||
static private Statement statement;
|
||||
public static TaosConsumer<ResultBean> getConsumer() throws SQLException{
|
||||
// ANCHOR: create_consumer
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "jni");
|
||||
config.setProperty("bootstrap.servers", "localhost:6030");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "1");
|
||||
config.setProperty("td.connect.user", "root");
|
||||
config.setProperty("td.connect.pass", "taosdata");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.ConsumerLoopFull$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
|
||||
try {
|
||||
return new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create jni consumer, host : " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
throw new SQLException("Failed to create consumer", e);
|
||||
}
|
||||
static private volatile boolean stopFlag = false;
|
||||
|
||||
public static TaosConsumer<ResultBean> getConsumer() throws SQLException {
|
||||
// ANCHOR: create_consumer
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "jni");
|
||||
config.setProperty("bootstrap.servers", "localhost:6030");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "1");
|
||||
config.setProperty("td.connect.user", "root");
|
||||
config.setProperty("td.connect.pass", "taosdata");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.ConsumerLoopFull$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
|
||||
try {
|
||||
return new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create jni consumer, host : " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to create jni consumer, host : " + config.getProperty("bootstrap.servers")
|
||||
+ "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
}
|
||||
|
||||
public static void pollDataExample() throws SQLException {
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
public static void pollDataExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
try{
|
||||
// subscribe to the topics
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
|
|
@ -67,113 +71,117 @@ try {
|
|||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data from topic_meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data from topic_meters", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to poll data from topic_meters; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data from topic_meters", ex);
|
||||
}
|
||||
}
|
||||
|
||||
public static void pollExample() throws SQLException {
|
||||
public static void pollExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: poll_data_code_piece
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
for (int i = 0; i < 50; i++) {
|
||||
// poll data
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process the data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
for (int i = 0; i < 50; i++) {
|
||||
// poll data
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process the data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
}
|
||||
}
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to poll data; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
}
|
||||
}
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
}
|
||||
// ANCHOR_END: poll_data_code_piece
|
||||
}
|
||||
}
|
||||
|
||||
public static void seekExample() throws SQLException {
|
||||
public static void seekExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: consumer_seek
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
ConsumerRecords<ResultBean> records = ConsumerRecords.emptyRecord();
|
||||
// make sure we have got some data
|
||||
while (records.isEmpty()){
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
}
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
Set<TopicPartition> assignment = consumer.assignment();
|
||||
System.out.println("now assignment: " + JSON.toJSONString(assignment));
|
||||
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
System.out.println("first data polled: " + JSON.toJSONString(record.value()));
|
||||
Set<TopicPartition> assignment = consumer.assignment();
|
||||
// seek to the beginning of the all partitions
|
||||
consumer.seekToBeginning(assignment);
|
||||
System.out.println("assignment seek to beginning successfully");
|
||||
break;
|
||||
}
|
||||
ConsumerRecords<ResultBean> records = ConsumerRecords.emptyRecord();
|
||||
// make sure we have got some data
|
||||
while (records.isEmpty()) {
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
}
|
||||
|
||||
// poll data agagin
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
// process the data here
|
||||
System.out.println("second data polled: " + JSON.toJSONString(record.value()));
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("seek example failed; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
}
|
||||
consumer.seekToBeginning(assignment);
|
||||
System.out.println("assignment seek to beginning successfully");
|
||||
System.out.println("beginning assignment: " + JSON.toJSONString(assignment));
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("seek example failed; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("seek example failed; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
}
|
||||
// ANCHOR_END: consumer_seek
|
||||
}
|
||||
|
||||
|
||||
public static void commitExample() throws SQLException {
|
||||
public static void commitExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: commit_code_piece
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
consumer.subscribe(topics);
|
||||
for (int i = 0; i < 50; i++) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
consumer.subscribe(topics);
|
||||
for (int i = 0; i < 50; i++) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to execute consumer functions. ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
// ANCHOR_END: commit_code_piece
|
||||
}
|
||||
public static void unsubscribeExample() throws SQLException {
|
||||
TaosConsumer<ResultBean> consumer = getConsumer();
|
||||
|
||||
public static void unsubscribeExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
consumer.subscribe(topics);
|
||||
// ANCHOR: unsubscribe_data_code_piece
|
||||
try {
|
||||
consumer.unsubscribe();
|
||||
} catch (SQLException ex){
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to unsubscribe consumer. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
} finally {
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to unsubscribe consumer. ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
}
|
||||
finally {
|
||||
consumer.close();
|
||||
}
|
||||
// ANCHOR_END: unsubscribe_data_code_piece
|
||||
|
|
@ -182,6 +190,7 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
public static class ResultDeserializer extends ReferenceDeserializer<ResultBean> {
|
||||
|
||||
}
|
||||
|
||||
// use this class to define the data structure of the result record
|
||||
public static class ResultBean {
|
||||
private Timestamp ts;
|
||||
|
|
@ -240,23 +249,23 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
}
|
||||
}
|
||||
|
||||
public static void prepareData() throws SQLException{
|
||||
StringBuilder insertQuery = new StringBuilder();
|
||||
insertQuery.append("INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES ");
|
||||
for (int i = 0; i < 10000; i++){
|
||||
insertQuery.append("(NOW + ").append(i).append("a, 10.30000, 219, 0.31000) ");
|
||||
}
|
||||
public static void prepareData() throws SQLException, InterruptedException {
|
||||
try {
|
||||
int affectedRows = statement.executeUpdate(insertQuery.toString());
|
||||
assert affectedRows == 10000;
|
||||
int i = 0;
|
||||
while (!stopFlag) {
|
||||
i++;
|
||||
String insertQuery = "INSERT INTO power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') VALUES (NOW + " + i + "a, 10.30000, 219, 0.31000) ";
|
||||
int affectedRows = statement.executeUpdate(insertQuery);
|
||||
assert affectedRows == 1;
|
||||
Thread.sleep(1);
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
System.out.println("Failed to insert data to power.meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to insert data to power.meters", ex);
|
||||
}
|
||||
}
|
||||
public static void prepareMeta() throws SQLException{
|
||||
|
||||
public static void prepareMeta() throws SQLException {
|
||||
try {
|
||||
statement.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
statement.executeUpdate("USE power");
|
||||
|
|
@ -288,6 +297,7 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
}
|
||||
System.out.println("Connection created successfully.");
|
||||
}
|
||||
|
||||
public static void closeConnection() throws SQLException {
|
||||
try {
|
||||
if (statement != null) {
|
||||
|
|
@ -310,7 +320,7 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
}
|
||||
|
||||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
public static void main(String[] args) throws SQLException, InterruptedException {
|
||||
initConnection();
|
||||
prepareMeta();
|
||||
|
||||
|
|
@ -321,11 +331,14 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
executor.submit(() -> {
|
||||
try {
|
||||
// please use one example at a time
|
||||
pollDataExample();
|
||||
// seekExample();
|
||||
// pollExample();
|
||||
// commitExample();
|
||||
unsubscribeExample();
|
||||
TaosConsumer<ResultBean> consumer = getConsumer();
|
||||
|
||||
pollDataExample(consumer);
|
||||
seekExample(consumer);
|
||||
pollExample(consumer);
|
||||
commitExample(consumer);
|
||||
unsubscribeExample(consumer);
|
||||
stopFlag = true;
|
||||
} catch (SQLException ex) {
|
||||
System.out.println("Failed to poll data from topic_meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
}
|
||||
|
|
@ -337,16 +350,16 @@ try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
|||
|
||||
System.out.println("Data prepared successfully");
|
||||
|
||||
// 关闭线程池，不再接收新任务
|
||||
// close the executor, which will make the executor reject new tasks
|
||||
executor.shutdown();
|
||||
|
||||
try {
|
||||
// 等待直到所有任务完成
|
||||
// wait for the executor to terminate
|
||||
boolean result = executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
|
||||
assert result;
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
} catch (Exception e){
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
System.out.println("Wait executor termination failed.");
|
||||
}
|
||||
|
|
|
|||
|
|
@ -20,9 +20,9 @@ public class ConsumerLoopImp {
|
|||
properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
|
||||
|
||||
// ANCHOR: create_topic
|
||||
Connection connection = DriverManager.getConnection(url, properties);
|
||||
Statement statement = connection.createStatement();
|
||||
statement.executeUpdate("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM meters");
|
||||
Connection connection = DriverManager.getConnection(url, properties);
|
||||
Statement statement = connection.createStatement();
|
||||
statement.executeUpdate("CREATE TOPIC IF NOT EXISTS topic_meters AS SELECT ts, current, voltage, phase, groupid, location FROM meters");
|
||||
// ANCHOR_END: create_topic
|
||||
|
||||
statement.close();
|
||||
|
|
|
|||
|
|
@ -35,29 +35,29 @@ public class ConsumerOffsetSeek {
|
|||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
|
||||
// ANCHOR: consumer_seek
|
||||
String topic = "topic_meters";
|
||||
Map<TopicPartition, Long> offset = null;
|
||||
try (TaosConsumer<AbsConsumerLoop.ResultBean> consumer = new TaosConsumer<>(config)) {
|
||||
consumer.subscribe(Collections.singletonList(topic));
|
||||
for (int i = 0; i < 10; i++) {
|
||||
if (i == 3) {
|
||||
// Saving consumption position
|
||||
offset = consumer.position(topic);
|
||||
}
|
||||
if (i == 5) {
|
||||
// reset consumption to the previously saved position
|
||||
for (Map.Entry<TopicPartition, Long> entry : offset.entrySet()) {
|
||||
consumer.seek(entry.getKey(), entry.getValue());
|
||||
String topic = "topic_meters";
|
||||
Map<TopicPartition, Long> offset = null;
|
||||
try (TaosConsumer<AbsConsumerLoop.ResultBean> consumer = new TaosConsumer<>(config)) {
|
||||
consumer.subscribe(Collections.singletonList(topic));
|
||||
for (int i = 0; i < 10; i++) {
|
||||
if (i == 3) {
|
||||
// Saving consumption position
|
||||
offset = consumer.position(topic);
|
||||
}
|
||||
if (i == 5) {
|
||||
// reset consumption to the previously saved position
|
||||
for (Map.Entry<TopicPartition, Long> entry : offset.entrySet()) {
|
||||
consumer.seek(entry.getKey(), entry.getValue());
|
||||
}
|
||||
}
|
||||
ConsumerRecords<AbsConsumerLoop.ResultBean> records = consumer.poll(Duration.ofMillis(500));
|
||||
// you can handle data here
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. server: " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
ConsumerRecords<AbsConsumerLoop.ResultBean> records = consumer.poll(Duration.ofMillis(500));
|
||||
// you can handle data here
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. server: " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
// ANCHOR_END: consumer_seek
|
||||
}
|
||||
}
|
||||
|
|
@ -16,97 +16,97 @@ public class JdbcBasicDemo {
|
|||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
final String url = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
final String url = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
|
||||
// get connection
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
try(Connection connection = DriverManager.getConnection(url, properties)){
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
try (Connection connection = DriverManager.getConnection(url, properties)) {
|
||||
|
||||
|
||||
if (connection != null){
|
||||
System.out.println("[ OK ] Connection established.");
|
||||
} else {
|
||||
System.out.println("[ ERR ] Connection can not be established.");
|
||||
return;
|
||||
}
|
||||
if (connection != null) {
|
||||
System.out.println("[ OK ] Connection established.");
|
||||
} else {
|
||||
System.out.println("[ ERR ] Connection can not be established.");
|
||||
return;
|
||||
}
|
||||
|
||||
Statement stmt = connection.createStatement();
|
||||
Statement stmt = connection.createStatement();
|
||||
|
||||
// ANCHOR: create_db_and_table
|
||||
// create database
|
||||
stmt.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
stmt.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
|
||||
// use database
|
||||
stmt.executeUpdate("USE power");
|
||||
stmt.executeUpdate("USE power");
|
||||
|
||||
// create table
|
||||
stmt.executeUpdate("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
stmt.executeUpdate("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
// ANCHOR_END: create_db_and_table
|
||||
|
||||
// ANCHOR: insert_data
|
||||
// insert data
|
||||
String insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
int affectedRows = stmt.executeUpdate(insertQuery);
|
||||
System.out.println("insert " + affectedRows + " rows.");
|
||||
String insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
int affectedRows = stmt.executeUpdate(insertQuery);
|
||||
System.out.println("insert " + affectedRows + " rows.");
|
||||
// ANCHOR_END: insert_data
|
||||
|
||||
|
||||
// ANCHOR: query_data
|
||||
// query data
|
||||
ResultSet resultSet = stmt.executeQuery("SELECT * FROM meters");
|
||||
ResultSet resultSet = stmt.executeQuery("SELECT * FROM meters");
|
||||
|
||||
Timestamp ts;
|
||||
float current;
|
||||
String location;
|
||||
while(resultSet.next()){
|
||||
ts = resultSet.getTimestamp(1);
|
||||
current = resultSet.getFloat(2);
|
||||
location = resultSet.getString("location");
|
||||
Timestamp ts;
|
||||
float current;
|
||||
String location;
|
||||
while (resultSet.next()) {
|
||||
ts = resultSet.getTimestamp(1);
|
||||
current = resultSet.getFloat(2);
|
||||
location = resultSet.getString("location");
|
||||
|
||||
System.out.printf("%s, %f, %s\n", ts, current, location);
|
||||
}
|
||||
System.out.printf("%s, %f, %s\n", ts, current, location);
|
||||
}
|
||||
// ANCHOR_END: query_data
|
||||
|
||||
// ANCHOR: with_reqid
|
||||
AbstractStatement aStmt = (AbstractStatement) connection.createStatement();
|
||||
aStmt.execute("CREATE DATABASE IF NOT EXISTS power", 1L);
|
||||
aStmt.executeUpdate("USE power", 2L);
|
||||
try (ResultSet rs = aStmt.executeQuery("SELECT * FROM meters limit 1", 3L)) {
|
||||
while(rs.next()){
|
||||
Timestamp timestamp = rs.getTimestamp(1);
|
||||
System.out.println("timestamp = " + timestamp);
|
||||
}
|
||||
}
|
||||
aStmt.close();
|
||||
AbstractStatement aStmt = (AbstractStatement) connection.createStatement();
|
||||
aStmt.execute("CREATE DATABASE IF NOT EXISTS power", 1L);
|
||||
aStmt.executeUpdate("USE power", 2L);
|
||||
try (ResultSet rs = aStmt.executeQuery("SELECT * FROM meters limit 1", 3L)) {
|
||||
while (rs.next()) {
|
||||
Timestamp timestamp = rs.getTimestamp(1);
|
||||
System.out.println("timestamp = " + timestamp);
|
||||
}
|
||||
}
|
||||
aStmt.close();
|
||||
// ANCHOR_END: with_reqid
|
||||
|
||||
|
||||
String sql = "SELECT * FROM meters limit 2;";
|
||||
String sql = "SELECT * FROM meters limit 2;";
|
||||
|
||||
// ANCHOR: jdbc_exception
|
||||
try (Statement statement = connection.createStatement();
|
||||
// executeQuery
|
||||
ResultSet tempResultSet = statement.executeQuery(sql)) {
|
||||
try (Statement statement = connection.createStatement();
|
||||
// executeQuery
|
||||
ResultSet tempResultSet = statement.executeQuery(sql)) {
|
||||
|
||||
// print result
|
||||
printResult(tempResultSet);
|
||||
} catch (SQLException e) {
|
||||
System.out.println("ERROR Message: " + e.getMessage());
|
||||
System.out.println("ERROR Code: " + e.getErrorCode());
|
||||
e.printStackTrace();
|
||||
}
|
||||
// print result
|
||||
printResult(tempResultSet);
|
||||
} catch (SQLException e) {
|
||||
System.out.println("ERROR Message: " + e.getMessage());
|
||||
System.out.println("ERROR Code: " + e.getErrorCode());
|
||||
e.printStackTrace();
|
||||
}
|
||||
// ANCHOR_END: jdbc_exception
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
|
|
|
|||
|
|
@ -15,37 +15,41 @@ public class JdbcCreatDBDemo {
|
|||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
|
||||
// get connection
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
// ANCHOR: create_db_and_table
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement()) {
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement()) {
|
||||
|
||||
// create database
|
||||
int rowsAffected = stmt.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
// create database
|
||||
int rowsAffected = stmt.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
|
||||
// use database
|
||||
rowsAffected = stmt.executeUpdate("USE power");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
// use database
|
||||
rowsAffected = stmt.executeUpdate("USE power");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
|
||||
// create table
|
||||
rowsAffected = stmt.executeUpdate("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
// create table
|
||||
rowsAffected = stmt.executeUpdate("CREATE STABLE IF NOT EXISTS meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (groupId INT, location BINARY(24))");
|
||||
// you can check rowsAffected here
|
||||
assert rowsAffected == 0;
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create db and table, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create db and table, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to create db and table, url:" + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
// ANCHOR_END: create_db_and_table
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,36 +15,39 @@ public class JdbcInsertDataDemo {
|
|||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
|
||||
// get connection
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
// ANCHOR: insert_data
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement()) {
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement()) {
|
||||
|
||||
// insert data, please make sure the database and table are created before
|
||||
String insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
int affectedRows = stmt.executeUpdate(insertQuery);
|
||||
// you can check affectedRows here
|
||||
System.out.println("inserted into " + affectedRows + " rows to power.meters successfully.");
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert data to power.meters, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
|
||||
}
|
||||
// insert data, please make sure the database and table are created before
|
||||
String insertQuery = "INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 219, 0.31000) " +
|
||||
"(NOW + 2a, 12.60000, 218, 0.33000) " +
|
||||
"(NOW + 3a, 12.30000, 221, 0.31000) " +
|
||||
"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " +
|
||||
"VALUES " +
|
||||
"(NOW + 1a, 10.30000, 218, 0.25000) ";
|
||||
int affectedRows = stmt.executeUpdate(insertQuery);
|
||||
// you can check affectedRows here
|
||||
System.out.println("inserted into " + affectedRows + " rows to power.meters successfully.");
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert data to power.meters, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert data to power.meters, url:" + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
// ANCHOR_END: insert_data
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,36 +15,40 @@ public class JdbcQueryDemo {
|
|||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
|
||||
// get connection
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
// ANCHOR: query_data
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement();
|
||||
// query data, make sure the database and table are created before
|
||||
ResultSet resultSet = stmt.executeQuery("SELECT ts, current, location FROM power.meters limit 100")) {
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
Statement stmt = connection.createStatement();
|
||||
// query data, make sure the database and table are created before
|
||||
ResultSet resultSet = stmt.executeQuery("SELECT ts, current, location FROM power.meters limit 100")) {
|
||||
|
||||
Timestamp ts;
|
||||
float current;
|
||||
String location;
|
||||
while (resultSet.next()) {
|
||||
ts = resultSet.getTimestamp(1);
|
||||
current = resultSet.getFloat(2);
|
||||
// we recommend using the column name to get the value
|
||||
location = resultSet.getString("location");
|
||||
Timestamp ts;
|
||||
float current;
|
||||
String location;
|
||||
while (resultSet.next()) {
|
||||
ts = resultSet.getTimestamp(1);
|
||||
current = resultSet.getFloat(2);
|
||||
// we recommend using the column name to get the value
|
||||
location = resultSet.getString("location");
|
||||
|
||||
// you can check data here
|
||||
System.out.printf("ts: %s, current: %f, location: %s %n", ts, current, location);
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to query data from power.meters, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
}
|
||||
// you can check data here
|
||||
System.out.printf("ts: %s, current: %f, location: %s %n", ts, current, location);
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to query data from power.meters, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to query data from power.meters, url:" + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
// ANCHOR_END: query_data
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -15,31 +15,34 @@ public class JdbcReqIdDemo {
|
|||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
final String jdbcUrl = "jdbc:TAOS://" + host + ":6030/?user=" + user + "&password=" + password;
|
||||
|
||||
// get connection
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
Properties properties = new Properties();
|
||||
properties.setProperty("charset", "UTF-8");
|
||||
properties.setProperty("locale", "en_US.UTF-8");
|
||||
properties.setProperty("timezone", "UTC-8");
|
||||
System.out.println("get connection starting...");
|
||||
|
||||
// ANCHOR: with_reqid
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
// Create a statement that allows specifying a request ID
|
||||
AbstractStatement aStmt = (AbstractStatement) connection.createStatement()) {
|
||||
try (Connection connection = DriverManager.getConnection(jdbcUrl, properties);
|
||||
// Create a statement that allows specifying a request ID
|
||||
AbstractStatement aStmt = (AbstractStatement) connection.createStatement()) {
|
||||
|
||||
try (ResultSet rs = aStmt.executeQuery("SELECT ts, current, location FROM power.meters limit 1", 3L)) {
|
||||
while (rs.next()) {
|
||||
Timestamp timestamp = rs.getTimestamp(1);
|
||||
System.out.println("timestamp = " + timestamp);
|
||||
try (ResultSet rs = aStmt.executeQuery("SELECT ts, current, location FROM power.meters limit 1", 3L)) {
|
||||
while (rs.next()) {
|
||||
Timestamp timestamp = rs.getTimestamp(1);
|
||||
System.out.println("timestamp = " + timestamp);
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute sql with reqId, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to execute sql with reqId, url:" + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute sql with reqId, url:" + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
|
||||
}
|
||||
// ANCHOR_END: with_reqid
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -69,6 +69,10 @@ public class ParameterBindingBasicDemo {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -31,20 +31,27 @@ public class ParameterBindingFullDemo {
|
|||
public static void main(String[] args) throws SQLException {
|
||||
|
||||
String jdbcUrl = "jdbc:TAOS://" + host + ":6030/";
|
||||
Connection conn = DriverManager.getConnection(jdbcUrl, "root", "taosdata");
|
||||
try (Connection conn = DriverManager.getConnection(jdbcUrl, "root", "taosdata")) {
|
||||
|
||||
init(conn);
|
||||
init(conn);
|
||||
|
||||
bindInteger(conn);
|
||||
bindFloat(conn);
|
||||
bindBoolean(conn);
|
||||
bindBytes(conn);
|
||||
bindString(conn);
|
||||
bindVarbinary(conn);
|
||||
bindGeometry(conn);
|
||||
bindInteger(conn);
|
||||
bindFloat(conn);
|
||||
bindBoolean(conn);
|
||||
bindBytes(conn);
|
||||
bindString(conn);
|
||||
bindVarbinary(conn);
|
||||
bindGeometry(conn);
|
||||
|
||||
clean(conn);
|
||||
conn.close();
|
||||
clean(conn);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
private static void init(Connection conn) throws SQLException {
|
||||
|
|
|
|||
|
|
@ -28,6 +28,10 @@ public class SchemalessJniTest {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert data with schemaless, host:" + host + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert data with schemaless, host:" + host + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -28,6 +28,10 @@ public class SchemalessWsTest {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert data with schemaless, host:" + host + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert data with schemaless, host:" + host + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -50,6 +50,10 @@ public class WSParameterBindingBasicDemo {
|
|||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -39,8 +39,11 @@ public class WSParameterBindingFullDemo {
|
|||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Error Code: " + ex.getErrorCode());
|
||||
System.out.println("Message: " + ex.getMessage());
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
} catch (Exception ex){
|
||||
System.out.println("Failed to insert to table meters using stmt, url: " + jdbcUrl + "; ErrMessage: " + ex.getMessage());
|
||||
throw ex;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -6,10 +6,7 @@ import com.taosdata.jdbc.tmq.*;
|
|||
|
||||
import java.sql.*;
|
||||
import java.time.Duration;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
import java.util.Properties;
|
||||
import java.util.Set;
|
||||
import java.util.*;
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
|
@ -18,37 +15,39 @@ import java.util.concurrent.TimeUnit;
|
|||
public class WsConsumerLoopFull {
|
||||
static private Connection connection;
|
||||
static private Statement statement;
|
||||
public static TaosConsumer<ResultBean> getConsumer() throws SQLException{
|
||||
|
||||
public static TaosConsumer<ResultBean> getConsumer() throws SQLException {
|
||||
// ANCHOR: create_consumer
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "ws");
|
||||
config.setProperty("bootstrap.servers", "localhost:6041");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "client1");
|
||||
config.setProperty("td.connect.user", "root");
|
||||
config.setProperty("td.connect.pass", "taosdata");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.WsConsumerLoopFull$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
Properties config = new Properties();
|
||||
config.setProperty("td.connect.type", "ws");
|
||||
config.setProperty("bootstrap.servers", "localhost:6041");
|
||||
config.setProperty("auto.offset.reset", "latest");
|
||||
config.setProperty("msg.with.table.name", "true");
|
||||
config.setProperty("enable.auto.commit", "true");
|
||||
config.setProperty("auto.commit.interval.ms", "1000");
|
||||
config.setProperty("group.id", "group1");
|
||||
config.setProperty("client.id", "1");
|
||||
config.setProperty("td.connect.user", "root");
|
||||
config.setProperty("td.connect.pass", "taosdata");
|
||||
config.setProperty("value.deserializer", "com.taosdata.example.WsConsumerLoopFull$ResultDeserializer");
|
||||
config.setProperty("value.deserializer.encoding", "UTF-8");
|
||||
|
||||
try {
|
||||
return new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create websocket consumer, host : " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
throw new SQLException("Failed to create consumer", e);
|
||||
}
|
||||
try {
|
||||
return new TaosConsumer<>(config);
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to create websocket consumer, host : " + config.getProperty("bootstrap.servers") + "; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to create websocket consumer, host : " + config.getProperty("bootstrap.servers")
|
||||
+ "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to create consumer", ex);
|
||||
}
|
||||
// ANCHOR_END: create_consumer
|
||||
}
|
||||
}
|
||||
|
||||
public static void pollDataExample() throws SQLException {
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
public static void pollDataExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
try{
|
||||
// subscribe to the topics
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
|
|
@ -70,194 +69,199 @@ try {
|
|||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data from topic_meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data from topic_meters", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to poll data from topic_meters; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data from topic_meters", ex);
|
||||
}
|
||||
}
|
||||
|
||||
public static void pollExample() throws SQLException {
|
||||
public static void pollExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: poll_data_code_piece
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
for (int i = 0; i < 50; i++) {
|
||||
// poll data
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process the data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
for (int i = 0; i < 50; i++) {
|
||||
// poll data
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process the data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
}
|
||||
}
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to poll data; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
}
|
||||
}
|
||||
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to poll data; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to poll data", ex);
|
||||
}
|
||||
// ANCHOR_END: poll_data_code_piece
|
||||
}
|
||||
|
||||
public static void seekExample() throws SQLException {
|
||||
public static void seekExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: consumer_seek
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
ConsumerRecords<ResultBean> records = ConsumerRecords.emptyRecord();
|
||||
// make sure we have got some data
|
||||
while (records.isEmpty()){
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
}
|
||||
// subscribe to the topics
|
||||
consumer.subscribe(topics);
|
||||
System.out.println("subscribe topics successfully");
|
||||
Set<TopicPartition> assignment = consumer.assignment();
|
||||
System.out.println("now assignment: " + JSON.toJSONString(assignment));
|
||||
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
System.out.println("first data polled: " + JSON.toJSONString(record.value()));
|
||||
Set<TopicPartition> assignment = consumer.assignment();
|
||||
// seek to the beginning of the all partitions
|
||||
consumer.seekToBeginning(assignment);
|
||||
System.out.println("assignment seek to beginning successfully");
|
||||
break;
|
||||
}
|
||||
ConsumerRecords<ResultBean> records = ConsumerRecords.emptyRecord();
|
||||
// make sure we have got some data
|
||||
while (records.isEmpty()) {
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
}
|
||||
|
||||
// poll data agagin
|
||||
records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
// process the data here
|
||||
System.out.println("second data polled: " + JSON.toJSONString(record.value()));
|
||||
break;
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("seek example failed; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
}
|
||||
consumer.seekToBeginning(assignment);
|
||||
System.out.println("assignment seek to beginning successfully");
|
||||
System.out.println("beginning assignment: " + JSON.toJSONString(assignment));
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("seek example failed; ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("seek example failed; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("seek example failed", ex);
|
||||
}
|
||||
// ANCHOR_END: consumer_seek
|
||||
}
|
||||
|
||||
|
||||
public static void commitExample() throws SQLException {
|
||||
public static void commitExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
// ANCHOR: commit_code_piece
|
||||
try (TaosConsumer<ResultBean> consumer = getConsumer()){
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
try {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
|
||||
consumer.subscribe(topics);
|
||||
for (int i = 0; i < 50; i++) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
consumer.subscribe(topics);
|
||||
for (int i = 0; i < 50; i++) {
|
||||
ConsumerRecords<ResultBean> records = consumer.poll(Duration.ofMillis(100));
|
||||
for (ConsumerRecord<ResultBean> record : records) {
|
||||
ResultBean bean = record.value();
|
||||
// process your data here
|
||||
System.out.println("data: " + JSON.toJSONString(bean));
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to execute consumer functions. ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
if (!records.isEmpty()) {
|
||||
// after processing the data, commit the offset manually
|
||||
consumer.commitSync();
|
||||
}
|
||||
}
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to execute consumer functions. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to execute consumer functions", ex);
|
||||
}
|
||||
// ANCHOR_END: commit_code_piece
|
||||
}
|
||||
public static void unsubscribeExample() throws SQLException {
|
||||
TaosConsumer<ResultBean> consumer = getConsumer();
|
||||
|
||||
public static void unsubscribeExample(TaosConsumer<ResultBean> consumer) throws SQLException {
|
||||
List<String> topics = Collections.singletonList("topic_meters");
|
||||
consumer.subscribe(topics);
|
||||
// ANCHOR: unsubscribe_data_code_piece
|
||||
try {
|
||||
consumer.unsubscribe();
|
||||
} catch (SQLException ex){
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to unsubscribe consumer. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
} finally {
|
||||
consumer.close();
|
||||
}
|
||||
try {
|
||||
consumer.unsubscribe();
|
||||
} catch (SQLException ex) {
|
||||
// handle any errors, please refer to the JDBC specifications for detailed exceptions info
|
||||
System.out.println("Failed to unsubscribe consumer. ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to unsubscribe consumer. ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to unsubscribe consumer", ex);
|
||||
}
|
||||
finally {
|
||||
consumer.close();
|
||||
}
|
||||
// ANCHOR_END: unsubscribe_data_code_piece
|
||||
}
|
||||
|
||||
public static class ResultDeserializer extends ReferenceDeserializer<ResultBean> {
|
||||
public static class ResultDeserializer extends ReferenceDeserializer<ResultBean> {
|
||||
|
||||
}
|
||||
// use this class to define the data structure of the result record
|
||||
public static class ResultBean {
|
||||
private Timestamp ts;
|
||||
private double current;
|
||||
private int voltage;
|
||||
private double phase;
|
||||
private int groupid;
|
||||
private String location;
|
||||
|
||||
public Timestamp getTs() {
|
||||
return ts;
|
||||
}
|
||||
|
||||
public void setTs(Timestamp ts) {
|
||||
this.ts = ts;
|
||||
}
|
||||
// use this class to define the data structure of the result record
|
||||
public static class ResultBean {
|
||||
private Timestamp ts;
|
||||
private double current;
|
||||
private int voltage;
|
||||
private double phase;
|
||||
private int groupid;
|
||||
private String location;
|
||||
|
||||
public double getCurrent() {
|
||||
return current;
|
||||
}
|
||||
|
||||
public void setCurrent(double current) {
|
||||
this.current = current;
|
||||
}
|
||||
|
||||
public int getVoltage() {
|
||||
return voltage;
|
||||
}
|
||||
|
||||
public void setVoltage(int voltage) {
|
||||
this.voltage = voltage;
|
||||
}
|
||||
|
||||
public double getPhase() {
|
||||
return phase;
|
||||
}
|
||||
|
||||
public void setPhase(double phase) {
|
||||
this.phase = phase;
|
||||
}
|
||||
|
||||
public int getGroupid() {
|
||||
return groupid;
|
||||
}
|
||||
|
||||
public void setGroupid(int groupid) {
|
||||
this.groupid = groupid;
|
||||
}
|
||||
|
||||
public String getLocation() {
|
||||
return location;
|
||||
}
|
||||
|
||||
public void setLocation(String location) {
|
||||
this.location = location;
|
||||
}
|
||||
}
|
||||
|
||||
public static void prepareData() throws SQLException{
|
||||
StringBuilder insertQuery = new StringBuilder();
|
||||
insertQuery.append("INSERT INTO " +
|
||||
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
|
||||
"VALUES ");
|
||||
for (int i = 0; i < 10000; i++){
|
||||
insertQuery.append("(NOW + ").append(i).append("a, 10.30000, 219, 0.31000) ");
|
||||
public Timestamp getTs() {
|
||||
return ts;
|
||||
}
|
||||
|
||||
public void setTs(Timestamp ts) {
|
||||
this.ts = ts;
|
||||
}
|
||||
|
||||
public double getCurrent() {
|
||||
return current;
|
||||
}
|
||||
|
||||
public void setCurrent(double current) {
|
||||
this.current = current;
|
||||
}
|
||||
|
||||
public int getVoltage() {
|
||||
return voltage;
|
||||
}
|
||||
|
||||
public void setVoltage(int voltage) {
|
||||
this.voltage = voltage;
|
||||
}
|
||||
|
||||
public double getPhase() {
|
||||
return phase;
|
||||
}
|
||||
|
||||
public void setPhase(double phase) {
|
||||
this.phase = phase;
|
||||
}
|
||||
|
||||
public int getGroupid() {
|
||||
return groupid;
|
||||
}
|
||||
|
||||
public void setGroupid(int groupid) {
|
||||
this.groupid = groupid;
|
||||
}
|
||||
|
||||
public String getLocation() {
|
||||
return location;
|
||||
}
|
||||
|
||||
public void setLocation(String location) {
|
||||
this.location = location;
|
||||
}
|
||||
}
|
||||
|
||||
public static void prepareData() throws SQLException, InterruptedException {
|
||||
try {
|
||||
int affectedRows = statement.executeUpdate(insertQuery.toString());
|
||||
assert affectedRows == 10000;
|
||||
for (int i = 0; i < 3000; i++) {
|
||||
String insertQuery = "INSERT INTO power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') VALUES (NOW + " + i + "a, 10.30000, 219, 0.31000) ";
|
||||
int affectedRows = statement.executeUpdate(insertQuery);
|
||||
assert affectedRows == 1;
|
||||
Thread.sleep(1);
|
||||
}
|
||||
} catch (SQLException ex) {
|
||||
System.out.println("Failed to insert data to power.meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
throw new SQLException("Failed to insert data to power.meters", ex);
|
||||
}
|
||||
}
|
||||
public static void prepareMeta() throws SQLException{
|
||||
|
||||
public static void prepareMeta() throws SQLException {
|
||||
try {
|
||||
statement.executeUpdate("CREATE DATABASE IF NOT EXISTS power");
|
||||
statement.executeUpdate("USE power");
|
||||
|
|
@ -289,6 +293,7 @@ public static class ResultBean {
|
|||
}
|
||||
System.out.println("Connection created successfully.");
|
||||
}
|
||||
|
||||
public static void closeConnection() throws SQLException {
|
||||
try {
|
||||
if (statement != null) {
|
||||
|
|
@ -311,7 +316,7 @@ public static class ResultBean {
|
|||
}
|
||||
|
||||
|
||||
public static void main(String[] args) throws SQLException {
|
||||
public static void main(String[] args) throws SQLException, InterruptedException {
|
||||
initConnection();
|
||||
prepareMeta();
|
||||
|
||||
|
|
@ -322,13 +327,22 @@ public static class ResultBean {
|
|||
executor.submit(() -> {
|
||||
try {
|
||||
// please use one example at a time
|
||||
pollDataExample();
|
||||
// seekExample();
|
||||
// pollExample();
|
||||
// commitExample();
|
||||
unsubscribeExample();
|
||||
TaosConsumer<ResultBean> consumer = getConsumer();
|
||||
|
||||
pollDataExample(consumer);
|
||||
seekExample(consumer);
|
||||
consumer.unsubscribe();
|
||||
pollExample(consumer);
|
||||
consumer.unsubscribe();
|
||||
commitExample(consumer);
|
||||
consumer.unsubscribe();
|
||||
unsubscribeExample(consumer);
|
||||
} catch (SQLException ex) {
|
||||
System.out.println("Failed to poll data from topic_meters, ErrCode:" + ex.getErrorCode() + "; ErrMessage: " + ex.getMessage());
|
||||
return;
|
||||
} catch (Exception ex) {
|
||||
System.out.println("Failed to poll data from topic_meters, ErrMessage: " + ex.getMessage());
|
||||
return;
|
||||
}
|
||||
System.out.println("pollDataExample executed successfully");
|
||||
});
|
||||
|
|
@ -338,16 +352,16 @@ public static class ResultBean {
|
|||
|
||||
System.out.println("Data prepared successfully");
|
||||
|
||||
// 关闭线程池，不再接收新任务
|
||||
// close the executor, which will make the executor reject new tasks
|
||||
executor.shutdown();
|
||||
|
||||
try {
|
||||
// 等待直到所有任务完成
|
||||
// wait for the executor to terminate
|
||||
boolean result = executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
|
||||
assert result;
|
||||
} catch (InterruptedException e) {
|
||||
Thread.currentThread().interrupt();
|
||||
} catch (Exception e){
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
System.out.println("Wait executor termination failed.");
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,32 +7,59 @@ pgrep taosadapter || taosadapter >> /dev/null 2>&1 &
|
|||
cd ../../docs/examples/csharp
|
||||
|
||||
dotnet run --project connect/connect.csproj
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
dotnet run --project sqlInsert/sqlinsert.csproj
|
||||
dotnet run --project query/query.csproj
|
||||
#dotnet run --project subscribe/subscribe.csproj
|
||||
|
||||
#taos -s "drop topic if exists topic_example"
|
||||
taos -s "drop database if exists power"
|
||||
dotnet run --project stmtInsert/stmtinsert.csproj
|
||||
dotnet run --project wsConnect/wsConnect.csproj
|
||||
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
dotnet run --project influxdbLine/influxdbline.csproj
|
||||
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
dotnet run --project optsTelnet/optstelnet.csproj
|
||||
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
dotnet run --project optsJSON/optsJSON.csproj
|
||||
|
||||
taos -s "create database if not exists test"
|
||||
# query
|
||||
taos -s "drop database if exists power"
|
||||
dotnet run --project wsConnect/wsConnect.csproj
|
||||
sleep 1
|
||||
dotnet run --project wsInsert/wsInsert.csproj
|
||||
dotnet run --project wsQuery/wsQuery.csproj
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project sqlInsert/sqlinsert.csproj
|
||||
dotnet run --project query/query.csproj
|
||||
|
||||
|
||||
# stmt
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project wsStmt/wsStmt.csproj
|
||||
|
||||
taos -s "drop database if exists test"
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project stmtInsert/stmtinsert.csproj
|
||||
|
||||
# schemaless
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project wssml/wssml.csproj
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project nativesml/nativesml.csproj
|
||||
|
||||
# subscribe
|
||||
taos -s "drop topic if exists topic_meters"
|
||||
sleep 1
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project wssubscribe/wssubscribe.csproj
|
||||
|
||||
taos -s "drop topic if exists topic_meters"
|
||||
sleep 1
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
dotnet run --project subscribe/subscribe.csproj
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@ set -e
|
|||
|
||||
taosd >>/dev/null 2>&1 &
|
||||
taosadapter >>/dev/null 2>&1 &
|
||||
sleep 10
|
||||
sleep 1
|
||||
cd ../../docs/examples/go
|
||||
|
||||
go mod tidy
|
||||
|
|
@ -12,20 +12,67 @@ go mod tidy
|
|||
go run ./connect/afconn/main.go
|
||||
go run ./connect/cgoexample/main.go
|
||||
go run ./connect/restexample/main.go
|
||||
go run ./connect/connpool/main.go
|
||||
go run ./connect/wsexample/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
go run ./sqlquery/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./queryreqid/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./stmt/native/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./stmt/ws/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./schemaless/native/main.go
|
||||
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./schemaless/ws/main.go
|
||||
|
||||
taos -s "drop topic if exists topic_meters"
|
||||
sleep 1
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./tmq/native/main.go
|
||||
|
||||
taos -s "drop topic if exists topic_meters"
|
||||
sleep 1
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./tmq/ws/main.go
|
||||
|
||||
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
go run ./insert/json/main.go
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
go run ./insert/line/main.go
|
||||
taos -s "drop topic if exists topic_meters"
|
||||
sleep 1
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./insert/sql/main.go
|
||||
taos -s "drop database if exists power"
|
||||
sleep 1
|
||||
go run ./insert/stmt/main.go
|
||||
taos -s "drop database if exists test"
|
||||
sleep 1
|
||||
go run ./insert/telnet/main.go
|
||||
|
||||
go run ./query/sync/main.go
|
||||
|
||||
taos -s "drop topic if exists example_tmq_topic"
|
||||
sleep 1
|
||||
taos -s "drop database if exists example_tmq"
|
||||
sleep 1
|
||||
go run ./sub/main.go
|
||||
|
|
|
|||
Loading…
Reference in New Issue