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Merge branch 'docs/sheyj-3.0' of github.com:taosdata/TDengine into docs/sheyj-3.0

This commit is contained in:
sheyanjie-qq 2024-08-12 17:29:43 +08:00
parent ef845842f8 3f10665ba3
commit 27c44318b6
44 changed files with 451 additions and 375 deletions
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10
docs/examples/csharp/optsJSON/Program.cs
View File

@ -5,9 +5,9 @@ namespace TDengineExample
{
internal class OptsJsonExample
{
// ANCHOR: main
public static void Main(string[] args)
{
// ANCHOR: main
var host = "127.0.0.1";
var lineDemo =
@ -38,20 +38,22 @@ namespace TDengineExample
client.SchemalessInsert(new []{jsonDemo}, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NOT_CONFIGURED, 0, ReqId.GetReqId());
}
Console.WriteLine("Inserted data with schemaless successfully.");
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to insert data with schemaless, host:" + host + "; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
Console.WriteLine("Failed to insert data with schemaless, host:" + host + "; ErrMessage: " + e.Message);
throw;
}
}
// ANCHOR_END: main
}
}
}

9
docs/examples/csharp/stmtInsert/Program.cs
View File

@ -12,9 +12,10 @@ namespace TDengineExample
var numOfSubTable = 10;
var numOfRow = 10;
var random = new Random();
var connectionString = $"host={host};port=6030;username=root;password=taosdata";
try
{
var builder = new ConnectionStringBuilder($"host={host};port=6030;username=root;password=taosdata");
var builder = new ConnectionStringBuilder(connectionString);
using (var client = DbDriver.Open(builder))
{
// create database
@ -53,7 +54,7 @@ namespace TDengineExample
stmt.Exec();
// get affected rows
var affectedRows = stmt.Affected();
Console.WriteLine($"table {tableName} insert {affectedRows} rows.");
Console.WriteLine($"Successfully inserted {affectedRows} rows to {tableName}.");
}
}
}
@ -61,13 +62,13 @@ namespace TDengineExample
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to insert to table meters using stmt, url: " + connectionString + "; 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);
Console.WriteLine("Failed to insert to table meters using stmt, url: " + connectionString + "; ErrMessage: " + e.Message);
throw;
}
}

36
docs/examples/csharp/subscribe/Program.cs
View File

@ -64,6 +64,9 @@ namespace TMQExample
{
// ANCHOR: create_consumer
// consumer config
var host = "127.0.0.1";
var groupId = "group1";
var clientId = "client1";
var cfg = new Dictionary<string, string>()
{
{ "td.connect.port", "6030" },
@ -71,9 +74,9 @@ namespace TMQExample
{ "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" },
{ "group.id", groupId },
{ "client.id", clientId },
{ "td.connect.ip", host },
{ "td.connect.user", "root" },
{ "td.connect.pass", "taosdata" },
};
@ -82,17 +85,20 @@ namespace TMQExample
{
// create consumer
consumer = new ConsumerBuilder<Dictionary<string, object>>(cfg).Build();
Console.WriteLine("Create consumer successfully, host: " + host + ", groupId: " + groupId +
", clientId: " + clientId);
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to create native consumer, host : " + host + "; ErrCode:" + e.Code +
"; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to create consumer; Err:" + e.Message);
Console.WriteLine("Failed to create native consumer, host : " + host + "; ErrMessage: " + e.Message);
throw;
}
@ -107,6 +113,7 @@ namespace TMQExample
{
// subscribe
consumer.Subscribe(new List<string>() { "topic_meters" });
Console.WriteLine("subscribe topics successfully");
for (int i = 0; i < 50; i++)
{
// consume message with using block to ensure the result is disposed
@ -117,7 +124,7 @@ namespace TMQExample
{
// handle message
Console.WriteLine(
$"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"data: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
}
}
@ -132,7 +139,7 @@ namespace TMQExample
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to poll data; Err:" + e.Message);
Console.WriteLine("Failed to poll data; ErrMessage:" + e.Message);
throw;
}
// ANCHOR_END: subscribe
@ -145,6 +152,7 @@ namespace TMQExample
{
// get assignment
var assignment = consumer.Assignment;
Console.WriteLine($"now assignment: ${assignment}");
// seek to the beginning
foreach (var topicPartition in assignment)
{
@ -172,13 +180,13 @@ namespace TMQExample
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("seek example failed; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to seek; Err:" + e.Message);
Console.WriteLine("seek example failed; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: seek
@ -200,18 +208,19 @@ namespace TMQExample
{
cr.TopicPartitionOffset,
});
Console.WriteLine("commit offset manually successfully.");
}
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to execute consumer functions. ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to commit offset; Err:" + e.Message);
Console.WriteLine("Failed to execute consumer functions. ErrMessage:" + e.Message);
throw;
}
}
@ -229,19 +238,20 @@ namespace TMQExample
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.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);
Console.WriteLine("Failed to unsubscribe consumer. Err: " + e.Message);
throw;
}
finally
{
// close consumer
consumer.Close();
Console.WriteLine("consumer closed successfully.");
}
// ANCHOR_END: close
}

49
docs/examples/csharp/wsInsert/Program.cs
View File

@ -11,13 +11,15 @@ namespace Examples
{
try
{
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;useSSL=false;username=root;password=taosdata");
var connectionString =
"protocol=WebSocket;host=127.0.0.1;port=6041;useSSL=false;username=root;password=taosdata";
var builder = new ConnectionStringBuilder(connectionString);
using (var client = DbDriver.Open(builder))
{
CreateDatabaseAndTable(client);
InsertData(client);
QueryData(client);
QueryWithReqId(client);
CreateDatabaseAndTable(client,connectionString);
InsertData(client,connectionString);
QueryData(client,connectionString);
QueryWithReqId(client,connectionString);
}
}
catch (TDengineError e)
@ -34,40 +36,40 @@ namespace Examples
}
}
private static void CreateDatabaseAndTable(ITDengineClient client)
private static void CreateDatabaseAndTable(ITDengineClient client, string connectionString)
{
// ANCHOR: create_db_and_table
try
{
// create database
var affected = client.Exec("CREATE DATABASE IF NOT EXISTS power");
Console.WriteLine($"Create database power, affected rows: {affected}");
Console.WriteLine($"Create database power successfully, rowsAffected: {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($"Create table meters, affected rows: {affected}");
Console.WriteLine($"Create stable power.meters successfully, rowsAffected: {affected}");
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to create db and table; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to create db and table,url:" + connectionString +"; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to create db and table; Err:" + e.Message);
Console.WriteLine("Failed to create db and table, url:" + connectionString + "; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: create_db_and_table
}
private static void InsertData(ITDengineClient client)
private static void InsertData(ITDengineClient client,string connectionString)
{
// ANCHOR: insert_data
try
{
// insert data
// insert data, please make sure the database and table are created before
var insertQuery = "INSERT INTO " +
"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " +
"VALUES " +
@ -78,29 +80,29 @@ namespace Examples
"VALUES " +
"(NOW + 1a, 10.30000, 218, 0.25000) ";
var affectedRows = client.Exec(insertQuery);
Console.WriteLine("insert " + affectedRows + " rows to power.meters successfully.");
Console.WriteLine("Successfully inserted " + affectedRows + " rows to power.meters.");
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to insert data to power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to insert data to power.meters, url:" + connectionString + "; 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);
Console.WriteLine("Failed to insert data to power.meters, url:" + connectionString + "; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: insert_data
}
private static void QueryData(ITDengineClient client)
private static void QueryData(ITDengineClient client,string connectionString)
{
// ANCHOR: select_data
try
{
// query data
// query data, make sure the database and table are created before
var query = "SELECT ts, current, location FROM power.meters limit 100";
using (var rows = client.Query(query))
{
@ -117,27 +119,28 @@ namespace Examples
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to query data from power.meters; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to query data from power.meters, url:" + connectionString + "; 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);
Console.WriteLine("Failed to query data from power.meters, url:" + connectionString + "; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: select_data
}
private static void QueryWithReqId(ITDengineClient client)
private static void QueryWithReqId(ITDengineClient client,string connectionString)
{
// ANCHOR: query_id
var reqId = (long)3;
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))
using (var rows = client.Query(query,reqId))
{
while (rows.Read())
{
@ -152,13 +155,13 @@ namespace Examples
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to execute sql with reqId; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to execute sql with reqId: " + reqId + ", url:" + connectionString + "; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to execute sql with reqId; Err:" + e.Message);
Console.WriteLine("Failed to execute sql with reqId: " + reqId + ", url:" + connectionString + "; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: query_id

9
docs/examples/csharp/wsStmt/Program.cs
View File

@ -13,9 +13,10 @@ namespace Examples
var numOfSubTable = 10;
var numOfRow = 10;
var random = new Random();
var connectionString = $"protocol=WebSocket;host={host};port=6041;useSSL=false;username=root;password=taosdata";
try
{
var builder = new ConnectionStringBuilder($"protocol=WebSocket;host={host};port=6041;useSSL=false;username=root;password=taosdata");
var builder = new ConnectionStringBuilder(connectionString);
using (var client = DbDriver.Open(builder))
{
// create database
@ -54,7 +55,7 @@ namespace Examples
stmt.Exec();
// get affected rows
var affectedRows = stmt.Affected();
Console.WriteLine($"table {tableName} insert {affectedRows} rows.");
Console.WriteLine($"Successfully inserted {affectedRows} rows to {tableName}.");
}
}
}
@ -62,13 +63,13 @@ namespace Examples
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to insert to table meters using stmt; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to insert to table meters using stmt, url: " + connectionString + "; 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);
Console.WriteLine("Failed to insert to table meters using stmt, url: " + connectionString + "; ErrMessage: " + e.Message);
throw;
}
}

7
docs/examples/csharp/wssml/Program.cs
View File

@ -38,17 +38,20 @@ namespace TDengineExample
client.SchemalessInsert(new[] { jsonDemo }, TDengineSchemalessProtocol.TSDB_SML_JSON_PROTOCOL,
TDengineSchemalessPrecision.TSDB_SML_TIMESTAMP_NOT_CONFIGURED, 0, ReqId.GetReqId());
}
Console.WriteLine("Inserted data with schemaless successfully.");
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to insert data with schemaless; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to insert data with schemaless, host:" + host + "; ErrCode:" + e.Code +
"; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to insert data with schemaless; Err:" + e.Message);
Console.WriteLine("Failed to insert data with schemaless, host:" + host + "; ErrMessage: " + e.Message);
throw;
}
}

45
docs/examples/csharp/wssubscribe/Program.cs
View File

@ -10,7 +10,9 @@ namespace TMQExample
{
try
{
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;username=root;password=taosdata");
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");
@ -48,7 +50,9 @@ namespace TMQExample
static void InsertData()
{
var builder = new ConnectionStringBuilder("protocol=WebSocket;host=127.0.0.1;port=6041;username=root;password=taosdata");
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)
@ -64,6 +68,9 @@ namespace TMQExample
{
// ANCHOR: create_consumer
// consumer config
var host = "127.0.0.1";
var groupId = "group1";
var clientId = "client1";
var cfg = new Dictionary<string, string>()
{
{ "td.connect.type", "WebSocket" },
@ -72,9 +79,9 @@ namespace TMQExample
{ "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" },
{ "group.id", groupId },
{ "client.id", clientId },
{ "td.connect.ip", host },
{ "td.connect.user", "root" },
{ "td.connect.pass", "taosdata" },
};
@ -83,17 +90,20 @@ namespace TMQExample
{
// create consumer
consumer = new ConsumerBuilder<Dictionary<string, object>>(cfg).Build();
Console.WriteLine("Create consumer successfully, host: " + host + ", groupId: " + groupId +
", clientId: " + clientId);
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to create consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to create websocket consumer, host : " + host + "; ErrCode:" + e.Code +
"; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to create consumer; Err:" + e.Message);
Console.WriteLine("Failed to create websocket consumer, host : " + host + "; ErrMessage: " + e.Message);
throw;
}
@ -108,6 +118,7 @@ namespace TMQExample
{
// subscribe
consumer.Subscribe(new List<string>() { "topic_meters" });
Console.WriteLine("subscribe topics successfully");
for (int i = 0; i < 50; i++)
{
// consume message with using block to ensure the result is disposed
@ -118,7 +129,7 @@ namespace TMQExample
{
// handle message
Console.WriteLine(
$"data {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"data: {{{((DateTime)message.Value["ts"]).ToString("yyyy-MM-dd HH:mm:ss.fff")}, " +
$"{message.Value["current"]}, {message.Value["voltage"]}, {message.Value["phase"]}}}");
}
}
@ -133,7 +144,7 @@ namespace TMQExample
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to poll data; Err:" + e.Message);
Console.WriteLine("Failed to poll data; ErrMessage:" + e.Message);
throw;
}
// ANCHOR_END: subscribe
@ -146,6 +157,7 @@ namespace TMQExample
{
// get assignment
var assignment = consumer.Assignment;
Console.WriteLine($"now assignment: ${assignment}");
// seek to the beginning
foreach (var topicPartition in assignment)
{
@ -166,6 +178,7 @@ namespace TMQExample
$"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;
}
}
@ -173,13 +186,13 @@ namespace TMQExample
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to seek; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("seek example failed; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to seek; Err:" + e.Message);
Console.WriteLine("seek example failed; ErrMessage: " + e.Message);
throw;
}
// ANCHOR_END: seek
@ -201,18 +214,19 @@ namespace TMQExample
{
cr.TopicPartitionOffset,
});
Console.WriteLine("commit offset manually successfully.");
}
}
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to commit offset; ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
Console.WriteLine("Failed to execute consumer functions. ErrCode:" + e.Code + "; ErrMessage: " + e.Error);
throw;
}
catch (Exception e)
{
// handle other exceptions
Console.WriteLine("Failed to commit offset; Err:" + e.Message);
Console.WriteLine("Failed to execute consumer functions. ErrMessage:" + e.Message);
throw;
}
}
@ -230,19 +244,20 @@ namespace TMQExample
catch (TDengineError e)
{
// handle TDengine error
Console.WriteLine("Failed to unsubscribe consumer; ErrCode:" + e.Code + "; ErrMessage: " + e.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);
Console.WriteLine("Failed to unsubscribe consumer. Err: " + e.Message);
throw;
}
finally
{
// close consumer
consumer.Close();
Console.WriteLine("consumer closed successfully.");
}
// ANCHOR_END: close
}

2
docs/examples/go/connect/cgoexample/main.go
View File

@ -15,7 +15,7 @@ func main() {
var taosDSN = "root:taosdata@tcp(localhost:6030)/"
taos, err := sql.Open("taosSql", taosDSN)
if err != nil {
log.Fatalln("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close()

2
docs/examples/go/connect/restexample/main.go
View File

@ -15,7 +15,7 @@ func main() {
var taosDSN = "root:taosdata@http(localhost:6041)/"
taos, err := sql.Open("taosRestful", taosDSN)
if err != nil {
log.Fatalln("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close()

2
docs/examples/go/connect/wsexample/main.go
View File

@ -15,7 +15,7 @@ func main() {
var taosDSN = "root:taosdata@ws(localhost:6041)/"
taos, err := sql.Open("taosWS", taosDSN)
if err != nil {
log.Fatalln("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
fmt.Println("Connected to " + taosDSN + " successfully.")
defer taos.Close()

10
docs/examples/go/queryreqid/main.go
View File

@ -11,19 +11,21 @@ import (
)
func main() {
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
taosDSN := "root:taosdata@tcp(localhost:6030)/"
db, err := sql.Open("taosSql", taosDSN)
if err != nil {
log.Fatal("Open database error: ", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
defer db.Close()
initEnv(db)
// ANCHOR: query_id
// use context to set request id
ctx := context.WithValue(context.Background(), "taos_req_id", int64(3))
reqId := int64(3)
ctx := context.WithValue(context.Background(), "taos_req_id", reqId)
// 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)
log.Fatalf("Failed to execute sql with reqId: %d, url: %s; ErrMessage: %s\n", reqId, taosDSN, err.Error())
}
for rows.Next() {
var (

14
docs/examples/go/schemaless/native/main.go
View File

@ -1,6 +1,7 @@
package main
import (
"fmt"
"log"
"github.com/taosdata/driver-go/v3/af"
@ -14,30 +15,31 @@ func main() {
conn, err := af.Open(host, "root", "taosdata", "", 0)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to host: " + host + "; ErrMessage: " + err.Error())
}
defer conn.Close()
_, err = conn.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil {
log.Fatal("failed to create database, err:", err)
log.Fatalln("Failed to create db host: " + host + "; ErrMessage: " + err.Error())
}
_, err = conn.Exec("USE power")
if err != nil {
log.Fatal("failed to use database, err:", err)
log.Fatalln("Failed to use db host: " + host + "; ErrMessage: " + err.Error())
}
// insert influxdb line protocol
err = conn.InfluxDBInsertLines([]string{lineDemo}, "ms")
if err != nil {
log.Fatal("failed to insert influxdb line protocol, err:", err)
log.Fatalln("Failed to insert data with schemaless, host: " + host + "; ErrMessage: " + err.Error())
}
// insert opentsdb telnet protocol
err = conn.OpenTSDBInsertTelnetLines([]string{telnetDemo})
if err != nil {
log.Fatal("failed to insert opentsdb telnet line protocol, err:", err)
log.Fatalln("Failed to insert data with schemaless, host: " + host + "; ErrMessage: " + err.Error())
}
// insert opentsdb json protocol
err = conn.OpenTSDBInsertJsonPayload(jsonDemo)
if err != nil {
log.Fatal("failed to insert opentsdb json format protocol, err:", err)
log.Fatalln("Failed to insert data with schemaless, host: " + host + "; ErrMessage: " + err.Error())
}
fmt.Println("Inserted data with schemaless successfully.")
}

16
docs/examples/go/schemaless/ws/main.go
View File

@ -17,14 +17,15 @@ func main() {
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))
taosDSN := fmt.Sprintf("root:taosdata@ws(%s:6041)/", host)
db, err := sql.Open("taosWS", taosDSN)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to host: " + host + "; ErrMessage: " + err.Error())
}
defer db.Close()
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS power")
if err != nil {
log.Fatal("failed to create database, err:", err)
log.Fatalln("Failed to create db host: " + host + "; ErrMessage: " + err.Error())
}
s, err := schemaless.NewSchemaless(schemaless.NewConfig("ws://localhost:6041", 1,
schemaless.SetDb("power"),
@ -34,21 +35,22 @@ func main() {
schemaless.SetPassword("taosdata"),
))
if err != nil {
log.Fatal("failed to create schemaless connection, err:", err)
log.Fatalln("Failed to connect to host: " + host + "; ErrMessage: " + err.Error())
}
// 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)
log.Fatalln("Failed to insert data with schemaless, host:" + host + "; ErrMessage: " + err.Error())
}
// 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)
log.Fatalln("Failed to insert data with schemaless, host: " + host + "; ErrMessage: " + err.Error())
}
// 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)
log.Fatalln("Failed to insert data with schemaless, host: " + host + "; ErrMessage: " + err.Error())
}
fmt.Println("Inserted data with schemaless successfully.")
}

42
docs/examples/go/sqlquery/main.go
View File

@ -10,39 +10,35 @@ import (
)
func main() {
db, err := sql.Open("taosSql", "root:taosdata@tcp(localhost:6030)/")
var taosDSN = "root:taosdata@tcp(localhost:6030)/"
db, err := sql.Open("taosSql", taosDSN)
if err != nil {
log.Fatal("open database failed:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
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)
log.Fatalln("Failed to create db, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
affected, err := res.RowsAffected()
rowsAffected, err := res.RowsAffected()
if err != nil {
log.Fatal("get affected rows failed:", err)
log.Fatalln("Failed to get create db rowsAffected, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
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)
// you can check rowsAffected here
fmt.Println("Create database power successfully, rowsAffected: ", rowsAffected)
// 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)
log.Fatalln("Failed to create db and table, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
fmt.Println("create table affected:", affected)
rowsAffected, err = res.RowsAffected()
if err != nil {
log.Fatalln("Failed to get create create rowsAffected, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
// you can check rowsAffected here
fmt.Println("Create stable power.meters successfully, rowsAffected:", rowsAffected)
// ANCHOR_END: create_db_and_table
// ANCHOR: insert_data
// insert data, please make sure the database and table are created before
@ -57,14 +53,14 @@ func main() {
"(NOW + 1a, 10.30000, 218, 0.25000) "
res, err = db.Exec(insertQuery)
if err != nil {
log.Fatal("insert data failed:", err)
log.Fatal("Failed to insert data to power.meters, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
affected, err = res.RowsAffected()
rowsAffected, err = res.RowsAffected()
if err != nil {
log.Fatal("get affected rows failed:", err)
log.Fatal("Failed to get insert rowsAffected, url:" + taosDSN + "; ErrMessage: " + err.Error())
}
// you can check affectedRows here
fmt.Println("insert data affected:", affected)
fmt.Printf("Successfully inserted %d rows to power.meters.\n", rowsAffected)
// ANCHOR_END: insert_data
// ANCHOR: select_data
// query data, make sure the database and table are created before

20
docs/examples/go/stmt/native/main.go
View File

@ -17,28 +17,28 @@ func main() {
numOfRow := 10
db, err := af.Open(host, "root", "taosdata", "", 0)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + host + "; ErrMessage: " + err.Error())
}
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)
log.Fatalln("Failed to create db, host: " + host + "; ErrMessage: " + err.Error())
}
_, err = db.Exec("USE power")
if err != nil {
log.Fatal("failed to use database, err:", err)
log.Fatalln("Failed to use db, host: " + host + "; ErrMessage: " + err.Error())
}
_, 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)
log.Fatalln("Failed to create table, host: " + host + "; ErrMessage: " + err.Error())
}
// 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)
log.Fatalln("Failed to prepare sql, host: " + host + "; ErrMessage: " + err.Error())
}
for i := 1; i <= numOfSubTable; i++ {
tableName := fmt.Sprintf("d_bind_%d", i)
@ -46,7 +46,7 @@ func main() {
// set tableName and tags
err = stmt.SetTableNameWithTags(tableName, tags)
if err != nil {
log.Fatal("failed to set table name and tags, err:", err)
log.Fatalln("Failed to set table name and tags, host: " + host + "; ErrMessage: " + err.Error())
}
// bind column data
current := time.Now()
@ -58,23 +58,23 @@ func main() {
AddFloat(rand.Float32())
err = stmt.BindRow(row)
if err != nil {
log.Fatal("failed to bind row, err:", err)
log.Fatalln("Failed to bind params, host: " + host + "; ErrMessage: " + err.Error())
}
}
// add batch
err = stmt.AddBatch()
if err != nil {
log.Fatal("failed to add batch, err:", err)
log.Fatalln("Failed to add batch, host: " + host + "; ErrMessage: " + err.Error())
}
// execute batch
err = stmt.Execute()
if err != nil {
log.Fatal("failed to execute batch, err:", err)
log.Fatalln("Failed to exec, host: " + host + "; ErrMessage: " + err.Error())
}
// get affected rows
affected := stmt.GetAffectedRows()
// you can check exeResult here
fmt.Printf("table %s insert %d rows.\n", tableName, affected)
fmt.Printf("Successfully inserted %d rows to %s.\n", affected, tableName)
}
err = stmt.Close()
if err != nil {

30
docs/examples/go/stmt/ws/main.go
View File

@ -17,19 +17,21 @@ func main() {
host := "127.0.0.1"
numOfSubTable := 10
numOfRow := 10
db, err := sql.Open("taosRestful", fmt.Sprintf("root:taosdata@http(%s:6041)/", host))
taosDSN := fmt.Sprintf("root:taosdata@http(%s:6041)/", host)
db, err := sql.Open("taosRestful", taosDSN)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
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)
log.Fatalln("Failed to create db, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
_, 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)
log.Fatalln("Failed to create table, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
config := stmt.NewConfig(fmt.Sprintf("ws://%s:6041", host), 0)
@ -41,17 +43,17 @@ func main() {
connector, err := stmt.NewConnector(config)
if err != nil {
log.Fatal("failed to create stmt connector, err:", err)
log.Fatalln("Failed to create stmt connector,url: " + taosDSN + "; ErrMessage: " + err.Error())
}
// prepare statement
sql := "INSERT INTO ? USING meters TAGS(?,?) VALUES (?,?,?,?)"
stmt, err := connector.Init()
if err != nil {
log.Fatal("failed to init stmt, err:", err)
log.Fatalln("Failed to init stmt, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
err = stmt.Prepare(sql)
if err != nil {
log.Fatal("failed to prepare stmt, err:", err)
log.Fatal("Failed to prepare sql, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
for i := 1; i <= numOfSubTable; i++ {
tableName := fmt.Sprintf("d_bind_%d", i)
@ -61,12 +63,12 @@ func main() {
// set tableName
err = stmt.SetTableName(tableName)
if err != nil {
log.Fatal("failed to set table name, err:", err)
log.Fatal("Failed to set table name, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
// set tags
err = stmt.SetTags(tags, tagsType)
if err != nil {
log.Fatal("failed to set tags, err:", err)
log.Fatal("Failed to set tags, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
// bind column data
current := time.Now()
@ -78,26 +80,26 @@ func main() {
columnData[3] = param.NewParam(1).AddFloat(rand.Float32())
err = stmt.BindParam(columnData, columnType)
if err != nil {
log.Fatal("failed to bind param, err:", err)
log.Fatal("Failed to bind params, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
}
// add batch
err = stmt.AddBatch()
if err != nil {
log.Fatal("failed to add batch, err:", err)
log.Fatal("Failed to add batch, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
// execute batch
err = stmt.Exec()
if err != nil {
log.Fatal("failed to exec stmt, err:", err)
log.Fatal("Failed to exec, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
// get affected rows
affected := stmt.GetAffectedRows()
// you can check exeResult here
fmt.Printf("table %s insert %d rows.\n", tableName, affected)
fmt.Printf("Successfully inserted %d rows to %s.\n", affected, tableName)
}
err = stmt.Close()
if err != nil {
log.Fatal("failed to close stmt, err:", err)
log.Fatal("Failed to close stmt, url: " + taosDSN + "; ErrMessage: " + err.Error())
}
}

42
docs/examples/go/tmq/native/main.go
View File

@ -15,9 +15,10 @@ var done = make(chan struct{})
func main() {
// init env
conn, err := sql.Open("taosSql", "root:taosdata@tcp(127.0.0.1:6030)/")
taosDSN := "root:taosdata@tcp(127.0.0.1:6030)/"
conn, err := sql.Open("taosSql", taosDSN)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
defer func() {
conn.Close()
@ -25,6 +26,9 @@ func main() {
initEnv(conn)
// ANCHOR: create_consumer
// create consumer
groupID := "group1"
clientID := "client1"
host := "127.0.0.1"
consumer, err := tmq.NewConsumer(&tmqcommon.ConfigMap{
"td.connect.user": "root",
"td.connect.pass": "taosdata",
@ -32,18 +36,21 @@ func main() {
"msg.with.table.name": "true",
"enable.auto.commit": "true",
"auto.commit.interval.ms": "1000",
"group.id": "group1",
"client.id": "client1",
"group.id": groupID,
"client.id": clientID,
})
if err != nil {
log.Fatal("failed to create consumer, err:", err)
log.Fatalln("Failed to create native consumer, host : " + host + "; ErrMessage: " + err.Error())
}
log.Println("Create consumer successfully, host: " + host + ", groupId: " + groupID + ", clientId: " + clientID)
// ANCHOR_END: create_consumer
// ANCHOR: subscribe
err = consumer.Subscribe("topic_meters", nil)
if err != nil {
log.Fatal("failed to subscribe, err:", err)
log.Fatalln("Failed to subscribe, host : " + host + "; ErrMessage: " + err.Error())
}
log.Println("subscribe topics successfully")
for i := 0; i < 50; i++ {
ev := consumer.Poll(100)
if ev != nil {
@ -53,23 +60,16 @@ func main() {
fmt.Printf("data:%v\n", e)
// ANCHOR: commit_offset
// commit offset
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
_, err = consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
if err != nil {
log.Fatal("failed to commit offset, err:", err)
log.Fatalln("Failed to commit offset, host : " + host + "; ErrMessage: " + err.Error())
}
fmt.Println(topicPartition)
log.Println("commit offset manually successfully.")
// ANCHOR_END: commit_offset
case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
log.Fatal("failed to get message, err:", e)
log.Fatalln("Failed to poll data, host : " + host + "; ErrMessage: " + err.Error())
}
// commit all offsets
topicPartition, err := consumer.Commit()
if err != nil {
log.Fatal("failed to commit, err:", err)
}
fmt.Println(topicPartition)
}
}
// ANCHOR_END: subscribe
@ -79,8 +79,8 @@ func main() {
if err != nil {
log.Fatal("failed to get assignment, err:", err)
}
fmt.Println("now assignment:", partitions)
for i := 0; i < len(partitions); i++ {
fmt.Println(partitions[i])
// seek to the beginning
err = consumer.Seek(tmqcommon.TopicPartition{
Topic: partitions[i].Topic,
@ -88,7 +88,7 @@ func main() {
Offset: 0,
}, 0)
if err != nil {
log.Fatal("failed to seek, err:", err)
log.Fatalln("seek example failed; ErrMessage: " + err.Error())
}
}
fmt.Println("assignment seek to beginning successfully")
@ -116,12 +116,12 @@ func main() {
// unsubscribe
err = consumer.Unsubscribe()
if err != nil {
log.Fatal("failed to unsubscribe, err:", err)
log.Fatal("Failed to unsubscribe consumer. ErrMessage: " + err.Error())
}
// close consumer
err = consumer.Close()
if err != nil {
log.Fatal("failed to close consumer, err:", err)
log.Fatal("Failed to close consumer. ErrMessage: " + err.Error())
}
// ANCHOR_END: close
<-done

44
docs/examples/go/tmq/ws/main.go
View File

@ -16,9 +16,10 @@ var done = make(chan struct{})
func main() {
// init env
conn, err := sql.Open("taosWS", "root:taosdata@ws(127.0.0.1:6041)/")
taosDSN := "root:taosdata@ws(127.0.0.1:6041)/"
conn, err := sql.Open("taosWS", taosDSN)
if err != nil {
log.Fatal("failed to connect TDengine, err:", err)
log.Fatalln("Failed to connect to " + taosDSN + "; ErrMessage: " + err.Error())
}
defer func() {
conn.Close()
@ -26,8 +27,11 @@ func main() {
initEnv(conn)
// ANCHOR: create_consumer
// create consumer
wsUrl := "ws://127.0.0.1:6041"
groupID := "group1"
clientID := "client1"
consumer, err := tmq.NewConsumer(&tmqcommon.ConfigMap{
"ws.url": "ws://127.0.0.1:6041",
"ws.url": wsUrl,
"ws.message.channelLen": uint(0),
"ws.message.timeout": common.DefaultMessageTimeout,
"ws.message.writeWait": common.DefaultWriteWait,
@ -37,18 +41,21 @@ func main() {
"msg.with.table.name": "true",
"enable.auto.commit": "true",
"auto.commit.interval.ms": "1000",
"group.id": "group1",
"client.id": "client1",
"group.id": groupID,
"client.id": clientID,
})
if err != nil {
log.Fatal("failed to create consumer, err:", err)
log.Fatalln("Failed to create websocket consumer, host : " + wsUrl + "; ErrMessage: " + err.Error())
}
log.Println("Create consumer successfully, host: " + wsUrl + ", groupId: " + groupID + ", clientId: " + clientID)
// ANCHOR_END: create_consumer
// ANCHOR: subscribe
err = consumer.Subscribe("topic_meters", nil)
if err != nil {
log.Fatal("failed to subscribe, err:", err)
log.Fatalln("Failed to subscribe, host : " + wsUrl + "; ErrMessage: " + err.Error())
}
log.Println("subscribe topics successfully")
for i := 0; i < 50; i++ {
ev := consumer.Poll(100)
if ev != nil {
@ -58,23 +65,16 @@ func main() {
fmt.Printf("data:%v\n", e)
// ANCHOR: commit_offset
// commit offset
topicPartition, err := consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
_, err = consumer.CommitOffsets([]tmqcommon.TopicPartition{e.TopicPartition})
if err != nil {
log.Fatal("failed to commit offset, err:", err)
log.Fatalln("Failed to commit offset, host : " + wsUrl + "; ErrMessage: " + err.Error())
}
fmt.Println(topicPartition)
log.Println("commit offset manually successfully.")
// ANCHOR_END: commit_offset
case tmqcommon.Error:
fmt.Printf("%% Error: %v: %v\n", e.Code(), e)
log.Fatal("failed to get message, err:", e)
log.Fatalln("Failed to poll data, host : " + wsUrl + "; ErrMessage: " + err.Error())
}
// commit all offsets
topicPartition, err := consumer.Commit()
if err != nil {
log.Fatal("failed to commit, err:", err)
}
fmt.Println(topicPartition)
}
}
// ANCHOR_END: subscribe
@ -84,8 +84,8 @@ func main() {
if err != nil {
log.Fatal("failed to get assignment, err:", err)
}
fmt.Println("now assignment:", partitions)
for i := 0; i < len(partitions); i++ {
fmt.Println(partitions[i])
// seek to the beginning
err = consumer.Seek(tmqcommon.TopicPartition{
Topic: partitions[i].Topic,
@ -93,7 +93,7 @@ func main() {
Offset: 0,
}, 0)
if err != nil {
log.Fatal("failed to seek, err:", err)
log.Fatalln("seek example failed; ErrMessage: " + err.Error())
}
}
fmt.Println("assignment seek to beginning successfully")
@ -121,12 +121,12 @@ func main() {
// unsubscribe
err = consumer.Unsubscribe()
if err != nil {
log.Fatal("failed to unsubscribe, err:", err)
log.Fatal("Failed to unsubscribe consumer. ErrMessage: " + err.Error())
}
// close consumer
err = consumer.Close()
if err != nil {
log.Fatal("failed to close consumer, err:", err)
log.Fatal("Failed to close consumer. ErrMessage: " + err.Error())
}
// ANCHOR_END: close
<-done

4
docs/examples/node/websocketexample/line_example.js
View File

@ -16,6 +16,7 @@ async function createConnect() {
}
async function test() {
let dsn = 'ws://localhost:6041'
let wsSql = null;
let wsRows = null;
let ttl = 0;
@ -24,9 +25,10 @@ async function test() {
await wsSql.schemalessInsert(influxdbData, taos.SchemalessProto.InfluxDBLineProtocol, taos.Precision.MILLI_SECONDS, ttl);
await wsSql.schemalessInsert(telnetData, taos.SchemalessProto.OpenTSDBTelnetLineProtocol, taos.Precision.MILLI_SECONDS, ttl);
await wsSql.schemalessInsert(jsonData, taos.SchemalessProto.OpenTSDBJsonFormatProtocol, taos.Precision.SECONDS, ttl);
console.log("Inserted data with schemaless successfully.")
}
catch (err) {
console.error("Failed to insert data with schemaless, ErrCode:" + err.code + "; ErrMessage: " + err.message);
console.error("Failed to insert data with schemaless, url:"+ dsn +", ErrCode:" + err.code + "; ErrMessage: " + err.message);
}
finally {
if (wsRows) {

57
docs/examples/node/websocketexample/sql_example.js
View File

@ -1,34 +1,39 @@
// ANCHOR: createConnect
const taos = require("@tdengine/websocket");
async function createConnect() {
let dsn = 'ws://localhost:6041';
async function createConnect() {
try {
let conf = new taos.WSConfig(dsn);
conf.setUser('root');
conf.setPwd('taosdata');
conf.setDb('power');
return await taos.sqlConnect(conf);
conn = await taos.sqlConnect(conf);
console.log("Connected to " + dsn + " successfully.");
return conn;
} catch (err) {
console.log("Failed to connect to " + dns + "; ErrCode:" + err.code + "; ErrMessage: " + err.message);
throw err;
}
}
// ANCHOR_END: createConnect
// ANCHOR: create_db_and_table
async function createDbAndTable(wsSql) {
async function createDbAndTable() {
let wsSql = null;
try {
wsSql = await createConnect();
await wsSql.exec('CREATE DATABASE IF NOT EXISTS POWER ' +
'KEEP 3650 DURATION 10 BUFFER 16 WAL_LEVEL 1;');
await wsSql.exec('CREATE DATABASE IF NOT EXISTS power');
await wsSql.exec('USE power');
await wsSql.exec('CREATE STABLE IF NOT EXISTS meters ' +
await wsSql.exec('CREATE STABLE IF NOT EXISTS power.meters ' +
'(_ts timestamp, current float, voltage int, phase float) ' +
'TAGS (location binary(64), groupId int);');
taosResult = await wsSql.exec('describe meters');
console.log(taosResult);
console.log("Create stable power.meters successfully");
} catch (err) {
console.error("Failed to create db and table, ErrCode:" + err.code + "; ErrMessage: " + err.message);
console.error("Failed to create db and table, url:" + dns + "; ErrCode:" + err.code + "; ErrMessage: " + err.message);
} finally {
if (wsSql) {
await wsSql.close();
@ -39,8 +44,8 @@ async function createDbAndTable(wsSql) {
// ANCHOR_END: create_db_and_table
// ANCHOR: insertData
async function insertData(wsSql) {
let wsSql = null;
async function insertData() {
let wsSql = null
try {
wsSql = await createConnect();
let insertQuery = "INSERT INTO " +
@ -53,9 +58,9 @@ async function insertData(wsSql) {
"VALUES " +
"(NOW + 1a, 10.30000, 218, 0.25000) ";
taosResult = await wsSql.exec(insertQuery);
console.log(taosResult);
console.log("Successfully inserted " + taosResult.getAffectRows() + " rows to power.meters.");
} catch (err) {
console.error("Failed to insert data to power.meters, ErrCode:" + err.code + "; ErrMessage: " + err.message);
console.error("Failed to insert data to power.meters, url:" + dsn + "; ErrCode:" + err.code + "; ErrMessage: " + err.message);
} finally {
if (wsSql) {
await wsSql.close();
@ -71,15 +76,13 @@ async function queryData() {
try {
wsSql = await createConnect();
wsRows = await wsSql.query('SELECT ts, current, location FROM power.meters limit 100');
let meta = wsRows.getMeta();
console.log("wsRow:meta:=>", meta);
while (await wsRows.next()) {
let result = wsRows.getData();
console.log('queryRes.Scan().then=>', result);
let row = wsRows.getData();
console.log('ts: ' + row[0] + ', current: ' + row[1] + ', location: ' + row[2]);
}
}
catch (err) {
console.error("Failed to query data from power.meters," + err.code + "; ErrMessage: " + err.message);
console.error("Failed to query data from power.meters, url:" + dsn + " ; ErrCode:" + err.code + "; ErrMessage: " + err.message);
}
finally {
if (wsRows) {
@ -93,22 +96,20 @@ async function queryData() {
// ANCHOR_END: queryData
// ANCHOR: sqlWithReqid
async function sqlWithReqid(wsSql) {
async function sqlWithReqid() {
let wsRows = null;
let wsSql = null;
let reqId = 1;
try {
wsSql = await createConnect();
wsRows = await wsSql.query('SELECT ts, current, location FROM power.meters limit 100', 1);
let meta = wsRows.getMeta();
console.log("wsRow:meta:=>", meta);
wsRows = await wsSql.query('SELECT ts, current, location FROM power.meters limit 100', reqId);
while (await wsRows.next()) {
let result = wsRows.getData();
console.log('queryRes.Scan().then=>', result);
let row = wsRows.getData();
console.log('ts: ' + row[0] + ', current: ' + row[1] + ', location: ' + row[2]);
}
}
catch (err) {
console.error("Failed to execute sql with reqId," + err.code + "; ErrMessage: " + err.message);
console.error("Failed to execute sql with reqId: " + reqId + "," + err.code + "; ErrMessage: " + err.message);
}
finally {
if (wsRows) {

7
docs/examples/node/websocketexample/stmt_example.js
View File

@ -4,6 +4,7 @@ let db = 'power';
let stable = 'meters';
let numOfSubTable = 10;
let numOfRow = 10;
let dsn = 'ws://localhost:6041'
function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
@ -11,7 +12,7 @@ function getRandomInt(min, max) {
}
async function prepare() {
let dsn = 'ws://localhost:6041'
let conf = new taos.WSConfig(dsn);
conf.setUser('root')
conf.setPwd('taosdata')
@ -54,11 +55,11 @@ async function prepare() {
await stmt.bind(bindParams);
await stmt.batch();
await stmt.exec();
console.log(`d_bind_${i} insert ` + stmt.getLastAffected() + " rows.");
console.log("Successfully inserted " + stmt.getLastAffected() + " to power.meters.");
}
}
catch (err) {
console.error("Failed to insert to table meters using stmt, ErrCode:" + err.code + "; ErrMessage: " + err.message);
console.error("Failed to insert to table meters using stmt, url:" + dsn + "ErrCode:" + err.code + "; ErrMessage: " + err.message);
}
finally {
if (stmt) {

25
docs/examples/node/websocketexample/tmq_example.js
View File

@ -1,23 +1,28 @@
const taos = require("@tdengine/websocket");
// ANCHOR: create_consumer
const db = 'power';
const stable = 'meters';
const topics = ['power_meters_topic'];
// ANCHOR: create_consumer
const url = 'ws://localhost:6041';
async function createConsumer() {
let groupId = "group1";
let clientId = "1";
let configMap = new Map([
[taos.TMQConstants.GROUP_ID, "group1"],
[taos.TMQConstants.CLIENT_ID, 'client1'],
[taos.TMQConstants.GROUP_ID, groupId],
[taos.TMQConstants.CLIENT_ID, clientId],
[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.WS_URL, url],
[taos.TMQConstants.ENABLE_AUTO_COMMIT, 'true'],
[taos.TMQConstants.AUTO_COMMIT_INTERVAL_MS, '1000']
]);
try {
return await taos.tmqConnect(configMap);
conn = await taos.tmqConnect(configMap);
console.log(`Create consumer successfully, host: ${url}, groupId: ${groupId}, clientId: ${clientId}`)
return conn;
}catch (err) {
console.log("Failed to create websocket consumer, ErrCode:" + err.code + "; ErrMessage: " + err.message);
throw err;
@ -31,7 +36,7 @@ async function prepare() {
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 createDB = `CREATE DATABASE IF NOT EXISTS ${db}`;
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);
@ -45,7 +50,7 @@ async function prepare() {
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();
wsSql.close();
}
async function subscribe(consumer) {
@ -55,9 +60,10 @@ async function subscribe(consumer) {
for (let i = 0; i < 50; i++) {
let res = await consumer.poll(100);
for (let [key, value] of res) {
console.log(key, value);
console.log(`data: ${key} ${value}`);
}
consumer.commit();
console.log("commit offset manually successfully.");
}
} catch (err) {
console.error("Failed to poll data; err.code, ErrCode:" + err.code + "; ErrMessage: " + err.message);
@ -74,6 +80,7 @@ async function test() {
let consumer = await createConsumer()
await subscribe(consumer)
await consumer.unsubscribe();
console.log("unsubscribe consumer successfully.");
}
catch (err) {
console.error("Failed to unsubscribe consume, ErrCode:" + err.code + "; ErrMessage: " + err.message);

1
docs/examples/node/websocketexample/tmq_seek_example.js
View File

@ -84,6 +84,7 @@ async function test() {
}
await consumer.seekToBeginning(assignment);
console.log("assignment seek to beginning successfully");
assignment = await consumer.assignment();
for (let i in assignment) {
console.log("seek after:", assignment[i]);

2
docs/examples/python/connect_example.py
View File

@ -14,7 +14,7 @@ def create_connection():
)
print(f"Connected to {host}:{port} successfully.");
except Exception as err:
print(f"Failed to connect to {host}:{port} ; Err:{err}")
print(f"Failed to connect to {host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

2
docs/examples/python/connect_rest_example.py
View File

@ -12,7 +12,7 @@ def create_connection():
print(f"Connected to {url} successfully.");
except Exception as err:
print(f"Failed to connect to {url} ; Err:{err}")
print(f"Failed to connect to {url} ; err:{err}")
finally:
if conn:
conn.close()

18
docs/examples/python/create_db_native.py
View File

@ -9,26 +9,18 @@ try:
user="root",
password="taosdata")
db = "power"
# create database
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
assert rowsAffected == 0
# change database. same as execute "USE db"
conn.select_db(db)
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS power")
print(f"Create database power successfully, rowsAffected: {rowsAffected}");
# 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))"
"CREATE TABLE IF NOT EXISTS power.meters (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
)
assert rowsAffected == 0
# create table
rowsAffected = conn.execute("CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupid, location) TAGS(0, 'Los Angles')")
assert rowsAffected == 0
print(f"Create stable power.meters successfully, rowsAffected: {rowsAffected}");
except Exception as err:
print(f"Failed to create db and table, db addrr:{host}:{port} err:{err}")
print(f"Failed to create db and table, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

14
docs/examples/python/create_db_rest.py
View File

@ -8,22 +8,18 @@ try:
password="taosdata",
timeout=30)
db = "power"
# create database
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
assert rowsAffected == 0
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS power")
print(f"Create database power successfully, rowsAffected: {rowsAffected}");
# 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))"
f"CREATE TABLE IF NOT EXISTS power.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
print(f"Create stable power.meters successfully, rowsAffected: {rowsAffected}");
except Exception as err:
print(f"Failed to create db and table, url:{url} err:{err}")
print(f"Failed to create db and table, url:{url} ; err:{err}")
finally:
if conn:
conn.close()

19
docs/examples/python/create_db_ws.py
View File

@ -9,27 +9,18 @@ try:
host=host,
port=port)
db = "power"
# create database
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
assert rowsAffected == 0
# change database.
rowsAffected = conn.execute(f"USE {db}")
assert rowsAffected == 0
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS power")
print(f"Create database power successfully, rowsAffected: {rowsAffected}");
# 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))"
"CREATE TABLE IF NOT EXISTS power.meters (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(16))"
)
assert rowsAffected == 0
# create table
rowsAffected = conn.execute("CREATE TABLE IF NOT EXISTS `d0` USING `meters` (groupid, location) TAGS(0, 'Los Angles')")
assert rowsAffected == 0
print(f"Create stable power.meters successfully, rowsAffected: {rowsAffected}");
except Exception as err:
print(f"Failed to create db and table, db addrr:{host}:{port} err:{err}")
print(f"Failed to create db and table, db addrr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

15
docs/examples/python/insert_native.py
View File

@ -1,12 +1,13 @@
import taos
conn = None
host = "localhost"
port = 6030
try:
conn = taos.connect(user="root",
password="taosdata",
host="localhost",
port=6030)
conn = taos.connect(host=host,
port=port,
user="root",
password="taosdata")
sql = """
INSERT INTO
@ -17,10 +18,10 @@ try:
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
"""
affectedRows = conn.execute(sql)
print(f"inserted into {affectedRows} rows to power.meters successfully.")
print(f"Successfully inserted {affectedRows} rows to power.meters.")
except Exception as err:
print(err)
print(f"Failed to insert data to power.meters, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

8
docs/examples/python/insert_rest.py
View File

@ -1,9 +1,9 @@
import taosrest
conn = None
url="http://localhost:6041"
try:
conn = taosrest.connect(url="http://localhost:6041",
conn = taosrest.connect(url=url,
user="root",
password="taosdata",
timeout=30)
@ -17,10 +17,10 @@ try:
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
"""
affectedRows = conn.execute(sql)
print(f"inserted into {affectedRows} rows to power.meters successfully.")
print(f"Successfully inserted {affectedRows} rows to power.meters.")
except Exception as err:
print(err)
print(f"Failed to insert data to power.meters, url:{url} ; err:{err}")
finally:
if conn:
conn.close()

11
docs/examples/python/insert_ws.py
View File

@ -1,12 +1,13 @@
import taosws
conn = None
host="localhost"
port=6041
try:
conn = taosws.connect(user="root",
password="taosdata",
host="localhost",
port=6041)
host=host,
port=port)
sql = """
INSERT INTO
@ -17,10 +18,10 @@ try:
VALUES (NOW + 1a, 10.30000, 218, 0.25000)
"""
affectedRows = conn.execute(sql)
print(f"inserted into {affectedRows} rows to power.meters successfully.")
print(f"Successfully inserted {affectedRows} rows to power.meters.")
except Exception as err:
print(err)
print(f"Failed to insert data to power.meters, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

17
docs/examples/python/query_native.py
View File

@ -1,26 +1,21 @@
import taos
host="localhost"
port=6030
conn = None
try:
conn = taos.connect(host="localhost",
port=6030,
conn = taos.connect(host=host,
port=port,
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)
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to query data from power.meters, err:{err}")
print(f"Failed to query data from power.meters, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

12
docs/examples/python/query_rest.py
View File

@ -1,15 +1,17 @@
import taosrest
client = None
url="http://localhost:6041"
try:
client = taosrest.RestClient(url="http://localhost:6041",
client = taosrest.RestClient(url=url,
user="root",
password="taosdata",
timeout=30)
result = client.sql(f"SELECT ts, current, location FROM power.meters limit 100", 1)
print(result)
result = client.sql(f"SELECT ts, current, location FROM power.meters limit 100")
if result["data"]:
for row in result["data"]:
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to query data from power.meters, err:{err}")
print(f"Failed to query data from power.meters, url:{url} ; err:{err}")

14
docs/examples/python/query_ws.py
View File

@ -1,22 +1,20 @@
import taosws
conn = None
host="localhost"
port=6041
try:
conn = taosws.connect(user="root",
password="taosdata",
host="localhost",
port=6041)
host=host,
port=port)
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)
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to query data from power.meters, err:{err}")
print(f"Failed to query data from power.meters, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

19
docs/examples/python/reqid_native.py
View File

@ -1,25 +1,24 @@
import taos
conn = None
reqId = 1
host="localhost"
port=6030
try:
conn = taos.connect(host="localhost",
port=6030,
conn = taos.connect(host=host,
port=port,
user="root",
password="taosdata")
result = conn.query("SELECT ts, current, location FROM power.meters limit 100", 1)
# Get fields from result
fields = result.fields
for field in fields:
print(field)
result = conn.query("SELECT ts, current, location FROM power.meters limit 100", reqId)
# Get data from result as list of tuple
data = result.fetch_all()
for row in data:
print(row)
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to execute sql with reqId, err:{err}")
print(f"Failed to execute sql with reqId:{reqId}, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

13
docs/examples/python/reqid_rest.py
View File

@ -1,15 +1,18 @@
import taosrest
client = None
url="http://localhost:6041"
reqId = 1
try:
client = taosrest.RestClient(url="http://localhost:6041",
client = taosrest.RestClient(url=url,
user="root",
password="taosdata",
timeout=30)
result = client.sql(f"SELECT ts, current, location FROM power.meters limit 100", 1)
print(result)
result = client.sql(f"SELECT ts, current, location FROM power.meters limit 100", reqId)
if result["data"]:
for row in result["data"]:
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to execute sql with reqId, err:{err}")
print(f"Failed to execute sql with reqId:{reqId}, url:{url} ; err:{err}")

14
docs/examples/python/reqid_ws.py
View File

@ -1,22 +1,24 @@
import taosws
conn = None
reqId = 1
host="localhost"
port=6041
try:
conn = taosws.connect(
user="root",
password="taosdata",
host="localhost",
port=6041,
host=host,
port=port,
)
result = conn.query_with_req_id("SELECT ts, current, location FROM power.meters limit 100", req_id=1)
# Get data from result as list of tuple
for row in result:
print(row)
print(f"ts: {row[0]}, current: {row[1]}, location: {row[2]}")
except Exception as err:
print(f"Failed to execute sql with reqId, err:{err}")
print(f"Failed to execute sql with reqId:{reqId}, db addr:{host}:{port} ; err:{err}")
finally:
if conn:
conn.close()

10
docs/examples/python/schemaless_native.py
View File

@ -9,13 +9,14 @@ 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"}}'
]
host = "localhost"
port = 6030
try:
conn = taos.connect(
host="localhost",
user="root",
password="taosdata",
port=6030
host=host,
port=port
)
conn.execute("CREATE DATABASE IF NOT EXISTS power")
@ -31,8 +32,9 @@ try:
conn.schemaless_insert(
jsonDemo, taos.SmlProtocol.JSON_PROTOCOL, taos.SmlPrecision.MILLI_SECONDS
)
print("Inserted data with schemaless successfully.");
except Exception as err:
print(f"Failed to insert data with schemaless, err:{err}")
print(f"Failed to insert data with schemaless, addr: {host}:{port} err:{err}")
finally:
if conn:
conn.close()

25
docs/examples/python/schemaless_ws.py
View File

@ -1,6 +1,5 @@
import taosws
db = "power"
def prepare():
conn = None
try:
@ -10,11 +9,12 @@ def prepare():
port=6041)
# create database
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS {db}")
rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS power")
assert rowsAffected == 0
except Exception as err:
print(f"Failed to create db and table, err:{err}")
raise err
finally:
if conn:
conn.close()
@ -32,13 +32,14 @@ def schemaless_insert():
jsonDemo = [
'{"metric": "metric_json","timestamp": 1626846400,"value": 10.3, "tags": {"groupid": 2, "location": "California.SanFrancisco", "id": "d1001"}}'
]
host = "localhost"
port = 6041
try:
conn = taosws.connect(user="root",
password="taosdata",
host="localhost",
port=6041,
database=db)
host=host,
port=port,
database='power')
conn.schemaless_insert(
lines = lineDemo,
@ -63,10 +64,18 @@ def schemaless_insert():
ttl=1,
req_id=3,
)
print("Inserted data with schemaless successfully.");
except Exception as err:
print(f"Failed to insert data with schemaless, err:{err}")
print(f"Failed to insert data with schemaless, addr: {host}:{port} err:{err}")
raise err
finally:
if conn:
conn.close()
if __name__ == "__main__":
try:
prepare()
schemaless_insert
except Exception as err:
print(f"Failed to insert data with schemaless, err:{err}")

11
docs/examples/python/stmt_native.py
View File

@ -7,13 +7,14 @@ numOfRow = 10
conn = None
stmt = None
host="localhost",
port=6030,
try:
conn = taos.connect(
host="localhost",
user="root",
password="taosdata",
port=6030,
host=host,
port=port,
)
conn.execute("CREATE DATABASE IF NOT EXISTS power")
@ -52,10 +53,10 @@ try:
params[3].float(phases)
stmt.bind_param_batch(params)
stmt.execute()
print(f"stmt insert successfully.")
print(f"Successfully inserted to power.meters.")
except Exception as err:
print(f"Failed to insert to table meters using stmt, error: {err}")
print(f"Failed to insert to table meters using stmt, addr:{host}:{port} ; err:{err}")
finally:
if stmt:
stmt.close()

6
docs/examples/python/stmt_ws.py
View File

@ -8,6 +8,8 @@ numOfRow = 10
conn = None
stmt = None
host="localhost"
port=6041
try:
conn = taosws.connect(user="root",
password="taosdata",
@ -56,10 +58,10 @@ try:
stmt.add_batch()
stmt.execute()
print(f"stmt insert successfully.")
print(f"Successfully inserted to power.meters.")
except Exception as err:
print(f"Failed to insert to table meters using stmt, error: {err}")
print(f"Failed to insert to table meters using stmt, addr:{host}:{port} ; err:{err}")
finally:
if stmt:
stmt.close()

20
docs/examples/python/tmq_native.py
View File

@ -49,23 +49,28 @@ def prepareMeta():
from taos.tmq import Consumer
def create_consumer():
host = "localhost"
port = 6030
groupId = "group1"
clientId = "1"
try:
consumer = Consumer(
{
"group.id": "group1",
"client.id": "1",
"group.id": groupId,
"client.id": clientId,
"td.connect.user": "root",
"td.connect.pass": "taosdata",
"enable.auto.commit": "true",
"auto.commit.interval.ms": "1000",
"auto.offset.reset": "latest",
"td.connect.ip": "localhost",
"td.connect.port": "6030",
"td.connect.ip": host,
"td.connect.port": port,
}
)
print(f"Create consumer successfully, host: {host}:{port}, groupId: {groupId}, clientId: {clientId}");
return consumer
except Exception as err:
print(f"Failed to poll data, err:{err}")
print(f"Failed to create websocket consumer, host: {host}:{port} ; err:{err}");
raise err
# ANCHOR_END: create_consumer
@ -87,7 +92,8 @@ def subscribe(consumer):
val = records.value()
if val:
for block in val:
print(block.fetchall())
data = block.fetchall()
print(f"data: {data}")
except Exception as err:
print(f"Failed to poll data, err:{err}")
@ -114,6 +120,7 @@ def commit_offset(consumer):
# after processing the data, commit the offset manually
consumer.commit(records)
print("commit offset manually successfully.");
except Exception as err:
print(f"Failed to poll data, err:{err}")
@ -141,6 +148,7 @@ def seek_offset(consumer):
def unsubscribe(consumer):
try:
consumer.unsubscribe()
print("unsubscribe consumer successfully.");
except Exception as err:
print(f"Failed to unsubscribe consumer. err:{err}")

21
docs/examples/python/tmq_websocket_example.py
View File

@ -60,20 +60,25 @@ def prepareMeta():
# ANCHOR: create_consumer
def create_consumer():
host = "localhost"
port = 6041
groupId = "group1"
clientId = "1"
try:
consumer = taosws.Consumer(conf={
"td.connect.websocket.scheme": "ws",
"group.id": "group1",
"client.id": "1",
"group.id": groupId,
"client.id": clientId,
"auto.offset.reset": "latest",
"td.connect.ip": "localhost",
"td.connect.port": "6041",
"td.connect.ip": host,
"td.connect.port": port,
"enable.auto.commit": "true",
"auto.commit.interval.ms": "1000",
})
print(f"Create consumer successfully, host: {host}:{port}, groupId: {groupId}, clientId: {clientId}");
return consumer;
except Exception as err:
print(f"Failed to create websocket consumer, err:{err}");
print(f"Failed to create websocket consumer, host: {host}:{port} ; err:{err}");
raise err
@ -108,7 +113,7 @@ def subscribe(consumer):
if records:
for block in records:
for row in block:
print(row)
print(f"data: {row}")
except Exception as err:
print(f"Failed to poll data, err:{err}")
@ -125,10 +130,11 @@ def commit_offset(consumer):
if records:
for block in records:
for row in block:
print(row)
print(f"data: {row}")
# after processing the data, commit the offset manually
consumer.commit(records)
print("commit offset manually successfully.");
except Exception as err:
print(f"Failed to poll data, err:{err}")
@ -141,6 +147,7 @@ def commit_offset(consumer):
def unsubscribe(consumer):
try:
consumer.unsubscribe()
print("unsubscribe consumer successfully.");
except Exception as err:
print("Failed to unsubscribe consumer. err:{err}")

50
tests/docs-examples-test/go.sh
View File

@ -2,6 +2,21 @@
set -e
check_transactions() {
for i in {1..30}
do
output=$(taos -s "show transactions;")
if [[ $output == *"Query OK, 0 row(s)"* ]]; then
echo "Success: No transactions are in progress."
return 0
fi
sleep 1
done
echo "Error: Transactions are still in progress after 30 attempts."
return 1
}
taosd >>/dev/null 2>&1 &
taosadapter >>/dev/null 2>&1 &
sleep 1
@ -19,60 +34,61 @@ taos -s "drop database if exists power"
go run ./sqlquery/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./queryreqid/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./stmt/native/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./stmt/ws/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
sleep 3
go run ./schemaless/native/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./schemaless/ws/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
check_transactions || exit 1
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./tmq/native/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
check_transactions || exit 1
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./tmq/ws/main.go
taos -s "drop database if exists test"
sleep 1
check_transactions || exit 1
go run ./insert/json/main.go
taos -s "drop database if exists test"
sleep 1
check_transactions || exit 1
go run ./insert/line/main.go
taos -s "drop topic if exists topic_meters"
sleep 1
check_transactions || exit 1
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./insert/sql/main.go
taos -s "drop database if exists power"
sleep 1
check_transactions || exit 1
go run ./insert/stmt/main.go
taos -s "drop database if exists test"
sleep 1
check_transactions || exit 1
go run ./insert/telnet/main.go
go run ./query/sync/main.go
taos -s "drop topic if exists example_tmq_topic"
sleep 1
check_transactions || exit 1
taos -s "drop database if exists example_tmq"
sleep 1
check_transactions || exit 1
go run ./sub/main.go