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Merge pull request #18927 from taosdata/fix/TD-21101 

fix: refact some example files
This commit is contained in:
dapan1121 2022-12-14 16:35:52 +08:00 committed by GitHub
parent 473338cf86 360282e565
commit 2aad923b59
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GPG Key ID: 4AEE18F83AFDEB23
16 changed files with 1040 additions and 2361 deletions
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67
examples/c/CMakeLists.txt
View File

@ -3,19 +3,13 @@ PROJECT(TDengine)
IF (TD_LINUX)
INCLUDE_DIRECTORIES(. ${TD_SOURCE_DIR}/src/inc ${TD_SOURCE_DIR}/src/client/inc ${TD_SOURCE_DIR}/inc)
AUX_SOURCE_DIRECTORY(. SRC)
# ADD_EXECUTABLE(demo apitest.c)
#TARGET_LINK_LIBRARIES(demo taos_static trpc tutil pthread )
#ADD_EXECUTABLE(sml schemaless.c)
#TARGET_LINK_LIBRARIES(sml taos_static trpc tutil pthread )
#ADD_EXECUTABLE(subscribe subscribe.c)
#TARGET_LINK_LIBRARIES(subscribe taos_static trpc tutil pthread )
#ADD_EXECUTABLE(epoll epoll.c)
#TARGET_LINK_LIBRARIES(epoll taos_static trpc tutil pthread lua)
add_executable(tmq "")
add_executable(stream_demo "")
add_executable(demoapi "")
add_executable(api_reqid "")
add_executable(schemaless "")
add_executable(prepare "")
add_executable(demo "")
add_executable(asyncdemo "")
target_sources(tmq
PRIVATE
@ -27,16 +21,25 @@ IF (TD_LINUX)
"stream_demo.c"
)
target_sources(demoapi
target_sources(schemaless
PRIVATE
"demoapi.c"
"schemaless.c"
)
target_sources(api_reqid
target_sources(prepare
PRIVATE
"api_with_reqid_test.c"
"prepare.c"
)
target_sources(demo
PRIVATE
"demo.c"
)
target_sources(asyncdemo
PRIVATE
"asyncdemo.c"
)
target_link_libraries(tmq
taos_static
@ -46,46 +49,30 @@ IF (TD_LINUX)
taos_static
)
target_link_libraries(demoapi
target_link_libraries(schemaless
taos_static
)
target_link_libraries(api_reqid
target_link_libraries(prepare
taos_static
)
target_include_directories(tmq
PUBLIC "${TD_SOURCE_DIR}/include/os"
PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
target_link_libraries(demo
taos_static
)
target_include_directories(stream_demo
PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
)
target_include_directories(demoapi
PUBLIC "${TD_SOURCE_DIR}/include/client"
PUBLIC "${TD_SOURCE_DIR}/include/os"
PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
)
target_include_directories(api_reqid
PUBLIC "${TD_SOURCE_DIR}/include/client"
PUBLIC "${TD_SOURCE_DIR}/include/os"
PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
target_link_libraries(asyncdemo
taos_static
)
SET_TARGET_PROPERTIES(tmq PROPERTIES OUTPUT_NAME tmq)
SET_TARGET_PROPERTIES(stream_demo PROPERTIES OUTPUT_NAME stream_demo)
SET_TARGET_PROPERTIES(demoapi PROPERTIES OUTPUT_NAME demoapi)
SET_TARGET_PROPERTIES(api_reqid PROPERTIES OUTPUT_NAME api_reqid)
SET_TARGET_PROPERTIES(schemaless PROPERTIES OUTPUT_NAME schemaless)
SET_TARGET_PROPERTIES(prepare PROPERTIES OUTPUT_NAME prepare)
SET_TARGET_PROPERTIES(demo PROPERTIES OUTPUT_NAME demo)
SET_TARGET_PROPERTIES(asyncdemo PROPERTIES OUTPUT_NAME asyncdemo)
ENDIF ()
IF (TD_DARWIN)
INCLUDE_DIRECTORIES(. ${TD_SOURCE_DIR}/src/inc ${TD_SOURCE_DIR}/src/client/inc ${TD_SOURCE_DIR}/inc)
AUX_SOURCE_DIRECTORY(. SRC)
#ADD_EXECUTABLE(demo demo.c)
#TARGET_LINK_LIBRARIES(demo taos_static trpc tutil pthread lua)
#ADD_EXECUTABLE(epoll epoll.c)
#TARGET_LINK_LIBRARIES(epoll taos_static trpc tutil pthread lua)
ENDIF ()

1948
examples/c/apitest.c
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File diff suppressed because it is too large Load Diff

8
examples/c/asyncdemo.c
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@ -23,8 +23,8 @@
#include <sys/time.h>
#include <unistd.h>
#include <string.h>
#include "../../../include/client/taos.h"
#include <inttypes.h>
#include "taos.h"
int points = 5;
int numOfTables = 3;
@ -230,7 +230,7 @@ void taos_insert_call_back(void *param, TAOS_RES *tres, int code)
if (tablesInsertProcessed >= numOfTables) {
gettimeofday(&systemTime, NULL);
et = systemTime.tv_sec * 1000000 + systemTime.tv_usec;
printf("%lld mseconds to insert %d data points\n", (et - st) / 1000, points*numOfTables);
printf("%" PRId64 " mseconds to insert %d data points\n", (et - st) / 1000, points*numOfTables);
}
}
@ -267,7 +267,7 @@ void taos_retrieve_call_back(void *param, TAOS_RES *tres, int numOfRows)
if (tablesSelectProcessed >= numOfTables) {
gettimeofday(&systemTime, NULL);
et = systemTime.tv_sec * 1000000 + systemTime.tv_usec;
printf("%lld mseconds to query %d data rows\n", (et - st) / 1000, points * numOfTables);
printf("%" PRId64 " mseconds to query %d data rows\n", (et - st) / 1000, points * numOfTables);
}
taos_free_result(tres);

2
examples/c/demo.c
View File

@ -20,7 +20,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../../../include/client/taos.h" // TAOS header file
#include "taos.h" // TAOS header file
static void queryDB(TAOS *taos, char *command) {
int i;

304
examples/c/epoll.c
View File

@ -1,304 +0,0 @@
/*
* 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/>.
*/
// how to use to do a pressure-test upon eok
// tester: cat /dev/urandom | nc -c <ip> <port>
// testee: ./debug/build/bin/epoll -l <port> > /dev/null
// compare against: nc -l <port> > /dev/null
// monitor and compare : glances
#ifdef __APPLE__
#include "osEok.h"
#else // __APPLE__
#include <sys/epoll.h>
#endif // __APPLE__
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <arpa/inet.h>
#include <libgen.h>
#include <locale.h>
#include <netdb.h>
#define D(fmt, ...) fprintf(stderr, "%s[%d]%s(): " fmt "\n", basename(__FILE__), __LINE__, __func__, ##__VA_ARGS__)
#define A(statement, fmt, ...) do { \
if (statement) break; \
fprintf(stderr, "%s[%d]%s(): assert [%s] failed: %d[%s]: " fmt "\n", \
basename(__FILE__), __LINE__, __func__, \
#statement, errno, strerror(errno), \
##__VA_ARGS__); \
abort(); \
} while (0)
#define E(fmt, ...) do { \
fprintf(stderr, "%s[%d]%s(): %d[%s]: " fmt "\n", \
basename(__FILE__), __LINE__, __func__, \
errno, strerror(errno), \
##__VA_ARGS__); \
} while (0)
#include "os.h"
typedef struct ep_s ep_t;
struct ep_s {
int ep;
pthread_mutex_t lock;
int sv[2]; // 0 for read, 1 for write;
pthread_t thread;
volatile unsigned int stopping:1;
volatile unsigned int waiting:1;
volatile unsigned int wakenup:1;
};
static int ep_dummy = 0;
static ep_t* ep_create(void);
static void ep_destroy(ep_t *ep);
static void* routine(void* arg);
static int open_listen(unsigned short port);
typedef struct fde_s fde_t;
struct fde_s {
int skt;
void (*on_event)(ep_t *ep, struct epoll_event *events, fde_t *client);
};
static void listen_event(ep_t *ep, struct epoll_event *ev, fde_t *client);
static void null_event(ep_t *ep, struct epoll_event *ev, fde_t *client);
#define usage(arg0, fmt, ...) do { \
if (fmt[0]) { \
fprintf(stderr, "" fmt "\n", ##__VA_ARGS__); \
} \
fprintf(stderr, "usage:\n"); \
fprintf(stderr, " %s -l <port> : specify listenning port\n", arg0); \
} while (0)
int main(int argc, char *argv[]) {
char *prg = basename(argv[0]);
if (argc==1) {
usage(prg, "");
return 0;
}
ep_t* ep = ep_create();
A(ep, "failed");
for (int i=1; i<argc; ++i) {
const char *arg = argv[i];
if (0==strcmp(arg, "-l")) {
++i;
if (i>=argc) {
usage(prg, "expecting <port> after -l, but got nothing");
return 1; // confirmed potential leakage
}
arg = argv[i];
int port = atoi(arg);
int skt = open_listen(port);
if (skt==-1) continue;
fde_t *client = (fde_t*)calloc(1, sizeof(*client));
if (!client) {
E("out of memory");
close(skt);
continue;
}
client->skt = skt;
client->on_event = listen_event;
struct epoll_event ev = {0};
ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLRDHUP;
ev.data.ptr = client;
A(0==epoll_ctl(ep->ep, EPOLL_CTL_ADD, skt, &ev), "");
continue;
}
usage(prg, "unknown argument: [%s]", arg);
return 1;
}
char *line = NULL;
size_t linecap = 0;
ssize_t linelen;
while ((linelen = getline(&line, &linecap, stdin)) > 0) {
line[strlen(line)-1] = '\0';
if (0==strcmp(line, "exit")) break;
if (0==strcmp(line, "quit")) break;
if (line==strstr(line, "close")) {
int fd = 0;
sscanf(line, "close %d", &fd);
if (fd<=2) {
fprintf(stderr, "fd [%d] invalid\n", fd);
continue;
}
A(0==epoll_ctl(ep->ep, EPOLL_CTL_DEL, fd, NULL), "");
continue;
}
if (strlen(line)==0) continue;
fprintf(stderr, "unknown cmd:[%s]\n", line);
}
ep_destroy(ep);
D("");
return 0;
}
ep_t* ep_create(void) {
ep_t *ep = (ep_t*)calloc(1, sizeof(*ep));
A(ep, "out of memory");
A(-1!=(ep->ep = epoll_create(1)), "");
ep->sv[0] = -1;
ep->sv[1] = -1;
A(0==socketpair(AF_LOCAL, SOCK_STREAM, 0, ep->sv), "");
A(0==pthread_mutex_init(&ep->lock, NULL), "");
A(0==pthread_mutex_lock(&ep->lock), "");
struct epoll_event ev = {0};
ev.events = EPOLLIN;
ev.data.ptr = &ep_dummy;
A(0==epoll_ctl(ep->ep, EPOLL_CTL_ADD, ep->sv[0], &ev), "");
A(0==pthread_create(&ep->thread, NULL, routine, ep), "");
A(0==pthread_mutex_unlock(&ep->lock), "");
return ep;
}
static void ep_destroy(ep_t *ep) {
A(ep, "invalid argument");
ep->stopping = 1;
A(1==send(ep->sv[1], "1", 1, 0), "");
A(0==pthread_join(ep->thread, NULL), "");
A(0==pthread_mutex_destroy(&ep->lock), "");
A(0==close(ep->sv[0]), "");
A(0==close(ep->sv[1]), "");
A(0==close(ep->ep), "");
free(ep);
}
static void* routine(void* arg) {
A(arg, "invalid argument");
ep_t *ep = (ep_t*)arg;
while (!ep->stopping) {
struct epoll_event evs[10];
memset(evs, 0, sizeof(evs));
A(0==pthread_mutex_lock(&ep->lock), "");
A(ep->waiting==0, "internal logic error");
ep->waiting = 1;
A(0==pthread_mutex_unlock(&ep->lock), "");
int r = epoll_wait(ep->ep, evs, sizeof(evs)/sizeof(evs[0]), -1);
A(r>0, "indefinite epoll_wait shall not timeout:[%d]", r);
A(0==pthread_mutex_lock(&ep->lock), "");
A(ep->waiting==1, "internal logic error");
ep->waiting = 0;
A(0==pthread_mutex_unlock(&ep->lock), "");
for (int i=0; i<r; ++i) {
struct epoll_event *ev = evs + i;
if (ev->data.ptr == &ep_dummy) {
char c = '\0';
A(1==recv(ep->sv[0], &c, 1, 0), "internal logic error");
A(0==pthread_mutex_lock(&ep->lock), "");
ep->wakenup = 0;
A(0==pthread_mutex_unlock(&ep->lock), "");
continue;
}
A(ev->data.ptr, "internal logic error");
fde_t *client = (fde_t*)ev->data.ptr;
client->on_event(ep, ev, client);
continue;
}
}
return NULL;
}
static int open_listen(unsigned short port) {
int r = 0;
int skt = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (skt==-1) {
E("socket() failed");
return -1;
}
do {
struct sockaddr_in si = {0};
si.sin_family = AF_INET;
si.sin_addr.s_addr = inet_addr("0.0.0.0");
si.sin_port = htons(port);
r = bind(skt, (struct sockaddr*)&si, sizeof(si));
if (r) {
E("bind(%u) failed", port);
break;
}
r = listen(skt, 100);
if (r) {
E("listen() failed");
break;
}
memset(&si, 0, sizeof(si));
socklen_t len = sizeof(si);
r = getsockname(skt, (struct sockaddr *)&si, &len);
if (r) {
E("getsockname() failed");
}
A(len==sizeof(si), "internal logic error");
D("listenning at: %d", ntohs(si.sin_port));
return skt;
} while (0);
close(skt);
return -1;
}
static void listen_event(ep_t *ep, struct epoll_event *ev, fde_t *client) {
A(ev->events & EPOLLIN, "internal logic error");
struct sockaddr_in si = {0};
socklen_t silen = sizeof(si);
int skt = accept(client->skt, (struct sockaddr*)&si, &silen);
A(skt!=-1, "internal logic error");
fde_t *server = (fde_t*)calloc(1, sizeof(*server));
if (!server) {
close(skt);
return;
}
server->skt = skt;
server->on_event = null_event;
struct epoll_event ee = {0};
ee.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLRDHUP;
ee.data.ptr = server;
A(0==epoll_ctl(ep->ep, EPOLL_CTL_ADD, skt, &ee), "");
}
static void null_event(ep_t *ep, struct epoll_event *ev, fde_t *client) {
if (ev->events & EPOLLIN) {
char buf[8192];
int n = recv(client->skt, buf, sizeof(buf), 0);
A(n>=0 && n<=sizeof(buf), "internal logic error:[%d]", n);
A(n==fwrite(buf, 1, n, stdout), "internal logic error");
}
if (ev->events & (EPOLLERR | EPOLLHUP | EPOLLRDHUP)) {
A(0==pthread_mutex_lock(&ep->lock), "");
A(0==epoll_ctl(ep->ep, EPOLL_CTL_DEL, client->skt, NULL), "");
A(0==pthread_mutex_unlock(&ep->lock), "");
close(client->skt);
client->skt = -1;
client->on_event = NULL;
free(client);
}
}

15
examples/c/makefile
View File

@ -7,22 +7,21 @@ LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt
CFLAGS = -O3 -g -Wall -Wno-deprecated -fPIC -Wno-unused-result -Wconversion \
-Wno-char-subscripts -D_REENTRANT -Wno-format -D_REENTRANT -DLINUX \
-Wno-unused-function -D_M_X64 -I/usr/local/taos/include -std=gnu99 \
-I../../../deps/cJson/inc
-I/usr/local/include/cjson
all: $(TARGET)
exe:
gcc $(CFLAGS) ./asyncdemo.c -o $(ROOT)asyncdemo $(LFLAGS)
gcc $(CFLAGS) ./demo.c -o $(ROOT)demo $(LFLAGS)
gcc $(CFLAGS) ./prepare.c -o $(ROOT)prepare $(LFLAGS)
gcc $(CFLAGS) ./stream.c -o $(ROOT)stream $(LFLAGS)
gcc $(CFLAGS) ./subscribe.c -o $(ROOT)subscribe $(LFLAGS)
gcc $(CFLAGS) ./apitest.c -o $(ROOT)apitest $(LFLAGS)
gcc $(CFLAGS) ./stream_demo.c -o $(ROOT)stream_demo $(LFLAGS)
gcc $(CFLAGS) ./tmq.c -o $(ROOT)tmq $(LFLAGS)
gcc $(CFLAGS) ./schemaless.c -o $(ROOT)schemaless $(LFLAGS)
clean:
rm $(ROOT)asyncdemo
rm $(ROOT)demo
rm $(ROOT)prepare
rm $(ROOT)batchprepare
rm $(ROOT)stream
rm $(ROOT)subscribe
rm $(ROOT)apitest
rm $(ROOT)stream_demo
rm $(ROOT)tmq
rm $(ROOT)schemaless

49
examples/c/prepare.c
View File

@ -4,7 +4,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../../../include/client/taos.h"
#include "taos.h"
void taosMsleep(int mseconds);
@ -70,70 +70,89 @@ int main(int argc, char *argv[])
char blob[80];
} v = {0};
int32_t boolLen = sizeof(int8_t);
int32_t sintLen = sizeof(int16_t);
int32_t intLen = sizeof(int32_t);
int32_t bintLen = sizeof(int64_t);
int32_t floatLen = sizeof(float);
int32_t doubleLen = sizeof(double);
int32_t binLen = sizeof(v.bin);
int32_t ncharLen = 30;
stmt = taos_stmt_init(taos);
TAOS_BIND params[10];
TAOS_MULTI_BIND params[10];
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts);
params[0].buffer = &v.ts;
params[0].length = &params[0].buffer_length;
params[0].length = &bintLen;
params[0].is_null = NULL;
params[0].num = 1;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b);
params[1].buffer = &v.b;
params[1].length = &params[1].buffer_length;
params[1].length = &boolLen;
params[1].is_null = NULL;
params[1].num = 1;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1);
params[2].buffer = &v.v1;
params[2].length = &params[2].buffer_length;
params[2].length = &boolLen;
params[2].is_null = NULL;
params[2].num = 1;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2);
params[3].buffer = &v.v2;
params[3].length = &params[3].buffer_length;
params[3].length = &sintLen;
params[3].is_null = NULL;
params[3].num = 1;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4);
params[4].buffer = &v.v4;
params[4].length = &params[4].buffer_length;
params[4].length = &intLen;
params[4].is_null = NULL;
params[4].num = 1;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8);
params[5].buffer = &v.v8;
params[5].length = &params[5].buffer_length;
params[5].length = &bintLen;
params[5].is_null = NULL;
params[5].num = 1;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4);
params[6].buffer = &v.f4;
params[6].length = &params[6].buffer_length;
params[6].length = &floatLen;
params[6].is_null = NULL;
params[6].num = 1;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8);
params[7].buffer = &v.f8;
params[7].length = &params[7].buffer_length;
params[7].length = &doubleLen;
params[7].is_null = NULL;
params[7].num = 1;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin);
params[8].buffer = v.bin;
params[8].length = &params[8].buffer_length;
params[8].length = &binLen;
params[8].is_null = NULL;
params[8].num = 1;
strcpy(v.blob, "一二三四五六七八九十");
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = strlen(v.blob);
params[9].buffer_length = sizeof(v.blob);
params[9].buffer = v.blob;
params[9].length = &params[9].buffer_length;
params[9].length = &ncharLen;
params[9].is_null = NULL;
params[9].num = 1;
int is_null = 1;
char is_null = 1;
sql = "insert into m1 values(?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
@ -153,7 +172,7 @@ int main(int argc, char *argv[])
v.v8 = (int64_t)(i * 8);
v.f4 = (float)(i * 40);
v.f8 = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
for (int j = 0; j < sizeof(v.bin); ++j) {
v.bin[j] = (char)(i + '0');
}

36
examples/c/schemaless.c
View File

@ -1,32 +1,17 @@
#include "../../../include/client/taos.h"
#include "os.h"
#include "taoserror.h"
#include "taos.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <inttypes.h>
#include <string.h>
int numSuperTables = 8;
int numChildTables = 4;
int numRowsPerChildTable = 2048;
void shuffle(char**lines, size_t n)
{
if (n > 1)
{
size_t i;
for (i = 0; i < n - 1; i++)
{
size_t j = i + taosRand() / (RAND_MAX / (n - i) + 1);
char* t = lines[j];
lines[j] = lines[i];
lines[i] = t;
}
}
}
static int64_t getTimeInUs() {
struct timeval systemTime;
gettimeofday(&systemTime, NULL);
@ -46,7 +31,7 @@ int main(int argc, char* argv[]) {
exit(1);
}
char* info = taos_get_server_info(taos);
const char* info = taos_get_server_info(taos);
printf("server info: %s\n", info);
info = taos_get_client_info(taos);
printf("client info: %s\n", info);
@ -61,9 +46,10 @@ int main(int argc, char* argv[]) {
time_t ct = time(0);
int64_t ts = ct * 1000;
char* lineFormat = "sta%d,t0=true,t1=127i8,t2=32767i16,t3=%di32,t4=9223372036854775807i64,t9=11.12345f32,t10=22.123456789f64,t11=\"binaryTagValue\",t12=L\"ncharTagValue\" c0=true,c1=127i8,c2=32767i16,c3=2147483647i32,c4=9223372036854775807i64,c5=254u8,c6=32770u16,c7=2147483699u32,c8=9223372036854775899u64,c9=11.12345f32,c10=22.123456789f64,c11=\"binaryValue\",c12=L\"ncharValue\" %lldms";
char* lineFormat = "sta%d,t0=true,t1=127i8,t2=32767i16,t3=%di32,t4=9223372036854775807i64,t9=11.12345f32,t10=22.123456789f64,t11=\"binaryTagValue\",t12=L\"ncharTagValue\" c0=true,c1=127i8,c2=32767i16,c3=2147483647i32,c4=9223372036854775807i64,c5=254u8,c6=32770u16,c7=2147483699u32,c8=9223372036854775899u64,c9=11.12345f32,c10=22.123456789f64,c11=\"binaryValue\",c12=L\"ncharValue\" %" PRId64;
char** lines = calloc(numSuperTables * numChildTables * numRowsPerChildTable, sizeof(char*));
int lineNum = numSuperTables * numChildTables * numRowsPerChildTable;
char** lines = calloc((size_t)lineNum, sizeof(char*));
int l = 0;
for (int i = 0; i < numSuperTables; ++i) {
for (int j = 0; j < numChildTables; ++j) {
@ -75,13 +61,13 @@ int main(int argc, char* argv[]) {
}
}
}
//shuffle(lines, numSuperTables * numChildTables * numRowsPerChildTable);
printf("%s\n", "begin taos_insert_lines");
int64_t begin = getTimeInUs();
int32_t code = taos_insert_lines(taos, lines, numSuperTables * numChildTables * numRowsPerChildTable);
TAOS_RES *res = taos_schemaless_insert(taos, lines, lineNum, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
int64_t end = getTimeInUs();
printf("code: %d, %s. time used: %"PRId64"\n", code, tstrerror(code), end-begin);
printf("code: %s. time used: %" PRId64 "\n", taos_errstr(res), end-begin);
taos_free_result(res);
return 0;
}

7
examples/c/stream_demo.c
View File

@ -108,10 +108,13 @@ int32_t create_stream() {
}
int main(int argc, char* argv[]) {
int code;
if (argc > 1) {
printf("env init\n");
code = init_env();
int code = init_env();
if (code) {
return code;
}
}
create_stream();
}

20
examples/c/tmq.c
View File

@ -21,9 +21,6 @@
#include "taos.h"
static int running = 1;
static char dbName[64] = "tmqdb";
static char stbName[64] = "stb";
static char topicName[64] = "topicname";
static int32_t msg_process(TAOS_RES* msg) {
char buf[1024];
@ -43,7 +40,7 @@ static int32_t msg_process(TAOS_RES* msg) {
TAOS_FIELD* fields = taos_fetch_fields(msg);
int32_t numOfFields = taos_field_count(msg);
int32_t* length = taos_fetch_lengths(msg);
//int32_t* length = taos_fetch_lengths(msg);
int32_t precision = taos_result_precision(msg);
rows++;
taos_print_row(buf, row, fields, numOfFields);
@ -62,6 +59,13 @@ static int32_t init_env() {
TAOS_RES* pRes;
// drop database if exists
printf("create database\n");
pRes = taos_query(pConn, "drop topic topicname");
if (taos_errno(pRes) != 0) {
printf("error in drop tmqdb, reason:%s\n", taos_errstr(pRes));
return -1;
}
taos_free_result(pRes);
pRes = taos_query(pConn, "drop database if exists tmqdb");
if (taos_errno(pRes) != 0) {
printf("error in drop tmqdb, reason:%s\n", taos_errstr(pRes));
@ -249,7 +253,7 @@ int main(int argc, char* argv[]) {
tmq_t* tmq = build_consumer();
if (NULL == tmq) {
fprintf(stderr, "%% build_consumer() fail!\n");
fprintf(stderr, "build_consumer() fail!\n");
return -1;
}
@ -259,7 +263,7 @@ int main(int argc, char* argv[]) {
}
if ((code = tmq_subscribe(tmq, topic_list))) {
fprintf(stderr, "%% Failed to tmq_subscribe(): %s\n", tmq_err2str(code));
fprintf(stderr, "Failed to tmq_subscribe(): %s\n", tmq_err2str(code));
}
tmq_list_destroy(topic_list);
@ -267,9 +271,9 @@ int main(int argc, char* argv[]) {
code = tmq_consumer_close(tmq);
if (code) {
fprintf(stderr, "%% Failed to close consumer: %s\n", tmq_err2str(code));
fprintf(stderr, "Failed to close consumer: %s\n", tmq_err2str(code));
} else {
fprintf(stderr, "%% Consumer closed\n");
fprintf(stderr, "Consumer closed\n");
}
return 0;

2
source/libs/catalog/src/ctgCache.c
View File

@ -1728,7 +1728,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
}
if (dbInfo->vgVersion < 0 || taosHashGetSize(dbInfo->vgHash) <= 0) {
ctgError("invalid db vgInfo, dbFName:%s, vgHash:%p, vgVersion:%d, vgHashSize:%d", dbFName, dbInfo->vgHash,
ctgDebug("invalid db vgInfo, dbFName:%s, vgHash:%p, vgVersion:%d, vgHashSize:%d", dbFName, dbInfo->vgHash,
dbInfo->vgVersion, taosHashGetSize(dbInfo->vgHash));
CTG_ERR_JRET(TSDB_CODE_APP_ERROR);
}

2
source/libs/scheduler/src/schStatus.c
View File

@ -64,7 +64,7 @@ _return:
int32_t schHandleOpBeginEvent(int64_t jobId, SSchJob** job, SCH_OP_TYPE type, SSchedulerReq* pReq) {
SSchJob* pJob = schAcquireJob(jobId);
if (NULL == pJob) {
qWarn("Acquire sch job failed, may be dropped, jobId:0x%" PRIx64, jobId);
qDebug("Acquire sch job failed, may be dropped, jobId:0x%" PRIx64, jobId);
SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
}

2
source/libs/scheduler/src/scheduler.c
View File

@ -157,7 +157,7 @@ void schedulerFreeJob(int64_t *jobId, int32_t errCode) {
SSchJob *pJob = schAcquireJob(*jobId);
if (NULL == pJob) {
qWarn("Acquire sch job failed, may be dropped, jobId:0x%" PRIx64, *jobId);
qDebug("Acquire sch job failed, may be dropped, jobId:0x%" PRIx64, *jobId);
return;
}

0
examples/c/api_with_reqid_test.c → tests/script/api/api_with_reqid_test.c
View File

936
tests/script/api/apitest.c Normal file
View File

@ -0,0 +1,936 @@
// sample code to verify all TDengine API
// to compile: gcc -o apitest apitest.c -ltaos
#include "cJSON.h"
#include "taoserror.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../../include/client/taos.h"
static int64_t count = 10000;
int64_t genReqid() {
count += 100;
return count;
}
static void prepare_data(TAOS* taos) {
TAOS_RES* result;
result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test precision 'us';");
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
result = taos_query(taos, "create table meters(ts timestamp, a int) tags(area int);");
taos_free_result(result);
result = taos_query(taos, "create table t0 using meters tags(0);");
taos_free_result(result);
result = taos_query(taos, "create table t1 using meters tags(1);");
taos_free_result(result);
result = taos_query(taos, "create table t2 using meters tags(2);");
taos_free_result(result);
result = taos_query(taos, "create table t3 using meters tags(3);");
taos_free_result(result);
result = taos_query(taos, "create table t4 using meters tags(4);");
taos_free_result(result);
result = taos_query(taos, "create table t5 using meters tags(5);");
taos_free_result(result);
result = taos_query(taos, "create table t6 using meters tags(6);");
taos_free_result(result);
result = taos_query(taos, "create table t7 using meters tags(7);");
taos_free_result(result);
result = taos_query(taos, "create table t8 using meters tags(8);");
taos_free_result(result);
result = taos_query(taos, "create table t9 using meters tags(9);");
taos_free_result(result);
result = taos_query(taos,
"insert into t0 values('2020-01-01 00:00:00.000', 0)"
" ('2020-01-01 00:01:00.000', 0)"
" ('2020-01-01 00:02:00.000', 0)"
" t1 values('2020-01-01 00:00:00.000', 0)"
" ('2020-01-01 00:01:00.000', 0)"
" ('2020-01-01 00:02:00.000', 0)"
" ('2020-01-01 00:03:00.000', 0)"
" t2 values('2020-01-01 00:00:00.000', 0)"
" ('2020-01-01 00:01:00.000', 0)"
" ('2020-01-01 00:01:01.000', 0)"
" ('2020-01-01 00:01:02.000', 0)"
" t3 values('2020-01-01 00:01:02.000', 0)"
" t4 values('2020-01-01 00:01:02.000', 0)"
" t5 values('2020-01-01 00:01:02.000', 0)"
" t6 values('2020-01-01 00:01:02.000', 0)"
" t7 values('2020-01-01 00:01:02.000', 0)"
" t8 values('2020-01-01 00:01:02.000', 0)"
" t9 values('2020-01-01 00:01:02.000', 0)");
int affected = taos_affected_rows(result);
if (affected != 18) {
printf("\033[31m%d rows affected by last insert statement, but it should be 18\033[0m\n", affected);
}
taos_free_result(result);
// super tables subscription
usleep(1000000);
}
static int print_result(TAOS_RES* res, int blockFetch) {
TAOS_ROW row = NULL;
int num_fields = taos_num_fields(res);
TAOS_FIELD* fields = taos_fetch_fields(res);
int nRows = 0;
if (blockFetch) {
int rows = 0;
while ((rows = taos_fetch_block(res, &row))) {
// for (int i = 0; i < rows; i++) {
// char temp[256];
// taos_print_row(temp, row + i, fields, num_fields);
// puts(temp);
// }
nRows += rows;
}
} else {
while ((row = taos_fetch_row(res))) {
char temp[256] = {0};
taos_print_row(temp, row, fields, num_fields);
puts(temp);
nRows++;
}
}
printf("%d rows consumed.\n", nRows);
return nRows;
}
static void check_row_count(int line, TAOS_RES* res, int expected) {
int actual = print_result(res, expected % 2);
if (actual != expected) {
printf("\033[31mline %d: row count mismatch, expected: %d, actual: %d\033[0m\n", line, expected, actual);
} else {
printf("line %d: %d rows consumed as expected\n", line, actual);
}
}
static void verify_query(TAOS* taos) {
prepare_data(taos);
int code = taos_load_table_info(taos, "t0,t1,t2,t3,t4,t5,t6,t7,t8,t9");
if (code != 0) {
printf("\033[31mfailed to load table info: 0x%08x\033[0m\n", code);
}
code = taos_validate_sql(taos, "select * from nonexisttable");
if (code == 0) {
printf("\033[31mimpossible, the table does not exists\033[0m\n");
}
code = taos_validate_sql(taos, "select * from meters");
if (code != 0) {
printf("\033[31mimpossible, the table does exists: 0x%08x\033[0m\n", code);
}
TAOS_RES* res = taos_query_with_reqid(taos, "select * from meters", genReqid());
check_row_count(__LINE__, res, 18);
printf("result precision is: %d\n", taos_result_precision(res));
int c = taos_field_count(res);
printf("field count is: %d\n", c);
int* lengths = taos_fetch_lengths(res);
for (int i = 0; i < c; i++) {
printf("length of column %d is %d\n", i, lengths[i]);
}
taos_free_result(res);
res = taos_query_with_reqid(taos, "select * from t0", genReqid());
check_row_count(__LINE__, res, 3);
taos_free_result(res);
res = taos_query_with_reqid(taos, "select * from nonexisttable", genReqid());
code = taos_errno(res);
printf("code=%d, error msg=%s\n", code, taos_errstr(res));
taos_free_result(res);
res = taos_query_with_reqid(taos, "select * from meters", genReqid());
taos_stop_query(res);
taos_free_result(res);
}
void subscribe_callback(TAOS_SUB* tsub, TAOS_RES* res, void* param, int code) {
int rows = print_result(res, *(int*)param);
printf("%d rows consumed in subscribe_callback\n", rows);
}
void verify_prepare(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create table m1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10))";
result = taos_query_with_reqid(taos, sql, genReqid());
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
// insert 10 records
struct {
int64_t ts;
int8_t b;
int8_t v1;
int16_t v2;
int32_t v4;
int64_t v8;
float f4;
double f8;
char bin[40];
char blob[80];
} v = {0};
int32_t boolLen = sizeof(int8_t);
int32_t sintLen = sizeof(int16_t);
int32_t intLen = sizeof(int32_t);
int32_t bintLen = sizeof(int64_t);
int32_t floatLen = sizeof(float);
int32_t doubleLen = sizeof(double);
int32_t binLen = sizeof(v.bin);
int32_t ncharLen = 30;
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_MULTI_BIND params[10];
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts);
params[0].buffer = &v.ts;
params[0].length = &bintLen;
params[0].is_null = NULL;
params[0].num = 1;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b);
params[1].buffer = &v.b;
params[1].length = &boolLen;
params[1].is_null = NULL;
params[1].num = 1;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1);
params[2].buffer = &v.v1;
params[2].length = &boolLen;
params[2].is_null = NULL;
params[2].num = 1;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2);
params[3].buffer = &v.v2;
params[3].length = &sintLen;
params[3].is_null = NULL;
params[3].num = 1;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4);
params[4].buffer = &v.v4;
params[4].length = &intLen;
params[4].is_null = NULL;
params[4].num = 1;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8);
params[5].buffer = &v.v8;
params[5].length = &bintLen;
params[5].is_null = NULL;
params[5].num = 1;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4);
params[6].buffer = &v.f4;
params[6].length = &floatLen;
params[6].is_null = NULL;
params[6].num = 1;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8);
params[7].buffer = &v.f8;
params[7].length = &doubleLen;
params[7].is_null = NULL;
params[7].num = 1;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin);
params[8].buffer = v.bin;
params[8].length = &binLen;
params[8].is_null = NULL;
params[8].num = 1;
strcpy(v.blob, "一二三四五六七八九十");
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = sizeof(v.blob);
params[9].buffer = v.blob;
params[9].length = &ncharLen;
params[9].is_null = NULL;
params[9].num = 1;
char is_null = 1;
sql = "insert into m1 values(?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
v.ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts += 1;
for (int j = 1; j < 10; ++j) {
params[j].is_null = ((i == j) ? &is_null : 0);
}
v.b = (int8_t)i % 2;
v.v1 = (int8_t)i;
v.v2 = (int16_t)(i * 2);
v.v4 = (int32_t)(i * 4);
v.v8 = (int64_t)(i * 8);
v.f4 = (float)(i * 40);
v.f8 = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin); ++j) {
v.bin[j] = (char)(i + '0');
}
taos_stmt_bind_param(stmt, params);
taos_stmt_add_batch(stmt);
}
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
v.v1 = 5;
v.v2 = 15;
taos_stmt_bind_param(stmt, params + 2);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
}
void verify_prepare2(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create table m1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10))";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
// insert 10 records
struct {
int64_t ts[10];
int8_t b[10];
int8_t v1[10];
int16_t v2[10];
int32_t v4[10];
int64_t v8[10];
float f4[10];
double f8[10];
char bin[10][40];
char blob[10][80];
} v;
int32_t* t8_len = malloc(sizeof(int32_t) * 10);
int32_t* t16_len = malloc(sizeof(int32_t) * 10);
int32_t* t32_len = malloc(sizeof(int32_t) * 10);
int32_t* t64_len = malloc(sizeof(int32_t) * 10);
int32_t* float_len = malloc(sizeof(int32_t) * 10);
int32_t* double_len = malloc(sizeof(int32_t) * 10);
int32_t* bin_len = malloc(sizeof(int32_t) * 10);
int32_t* blob_len = malloc(sizeof(int32_t) * 10);
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_MULTI_BIND params[10];
char is_null[10] = {0};
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts[0]);
params[0].buffer = v.ts;
params[0].length = t64_len;
params[0].is_null = is_null;
params[0].num = 10;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b[0]);
params[1].buffer = v.b;
params[1].length = t8_len;
params[1].is_null = is_null;
params[1].num = 10;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1[0]);
params[2].buffer = v.v1;
params[2].length = t8_len;
params[2].is_null = is_null;
params[2].num = 10;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2[0]);
params[3].buffer = v.v2;
params[3].length = t16_len;
params[3].is_null = is_null;
params[3].num = 10;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4[0]);
params[4].buffer = v.v4;
params[4].length = t32_len;
params[4].is_null = is_null;
params[4].num = 10;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8[0]);
params[5].buffer = v.v8;
params[5].length = t64_len;
params[5].is_null = is_null;
params[5].num = 10;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4[0]);
params[6].buffer = v.f4;
params[6].length = float_len;
params[6].is_null = is_null;
params[6].num = 10;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8[0]);
params[7].buffer = v.f8;
params[7].length = double_len;
params[7].is_null = is_null;
params[7].num = 10;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin[0]);
params[8].buffer = v.bin;
params[8].length = bin_len;
params[8].is_null = is_null;
params[8].num = 10;
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = sizeof(v.blob[0]);
params[9].buffer = v.blob;
params[9].length = blob_len;
params[9].is_null = is_null;
params[9].num = 10;
sql = "insert into ? (ts, b, v1, v2, v4, v8, f4, f8, bin, blob) values(?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
code = taos_stmt_set_tbname(stmt, "m1");
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
int64_t ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts[i] = ts++;
is_null[i] = 0;
v.b[i] = (int8_t)i % 2;
v.v1[i] = (int8_t)i;
v.v2[i] = (int16_t)(i * 2);
v.v4[i] = (int32_t)(i * 4);
v.v8[i] = (int64_t)(i * 8);
v.f4[i] = (float)(i * 40);
v.f8[i] = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin[0]); ++j) {
v.bin[i][j] = (char)(i + '0');
}
strcpy(v.blob[i], "一二三四五六七八九十");
t8_len[i] = sizeof(int8_t);
t16_len[i] = sizeof(int16_t);
t32_len[i] = sizeof(int32_t);
t64_len[i] = sizeof(int64_t);
float_len[i] = sizeof(float);
double_len[i] = sizeof(double);
bin_len[i] = sizeof(v.bin[0]);
blob_len[i] = (int32_t)strlen(v.blob[i]);
}
taos_stmt_bind_param_batch(stmt, params);
taos_stmt_add_batch(stmt);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
TAOS_MULTI_BIND qparams[2];
int8_t v1 = 5;
int16_t v2 = 15;
int32_t tinyLen = sizeof(v1);
int32_t smallLen = sizeof(v2);
qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
qparams[0].buffer_length = sizeof(v1);
qparams[0].buffer = &v1;
qparams[0].length = &tinyLen;
qparams[0].is_null = NULL;
qparams[0].num = 1;
qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
qparams[1].buffer_length = sizeof(v2);
qparams[1].buffer = &v2;
qparams[1].length = &smallLen;
qparams[1].is_null = NULL;
qparams[1].num = 1;
taos_stmt_bind_param(stmt, qparams);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
free(t8_len);
free(t16_len);
free(t32_len);
free(t64_len);
free(float_len);
free(double_len);
free(bin_len);
free(blob_len);
}
void verify_prepare3(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create stable st1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10)) tags (id1 int, id2 binary(40))";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
return;
}
taos_free_result(result);
TAOS_MULTI_BIND tags[2];
int32_t id1 = 1;
char id2[40] = "abcdefghijklmnopqrstuvwxyz0123456789";
int32_t id2_len = (int32_t)strlen(id2);
tags[0].buffer_type = TSDB_DATA_TYPE_INT;
tags[0].buffer_length = sizeof(int);
tags[0].buffer = &id1;
tags[0].length = NULL;
tags[0].is_null = NULL;
tags[0].num = 1;
tags[1].buffer_type = TSDB_DATA_TYPE_BINARY;
tags[1].buffer_length = sizeof(id2);
tags[1].buffer = id2;
tags[1].length = &id2_len;
tags[1].is_null = NULL;
tags[1].num = 1;
// insert 10 records
struct {
int64_t ts[10];
int8_t b[10];
int8_t v1[10];
int16_t v2[10];
int32_t v4[10];
int64_t v8[10];
float f4[10];
double f8[10];
char bin[10][40];
char blob[10][80];
} v;
int32_t* t8_len = malloc(sizeof(int32_t) * 10);
int32_t* t16_len = malloc(sizeof(int32_t) * 10);
int32_t* t32_len = malloc(sizeof(int32_t) * 10);
int32_t* t64_len = malloc(sizeof(int32_t) * 10);
int32_t* float_len = malloc(sizeof(int32_t) * 10);
int32_t* double_len = malloc(sizeof(int32_t) * 10);
int32_t* bin_len = malloc(sizeof(int32_t) * 10);
int32_t* blob_len = malloc(sizeof(int32_t) * 10);
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_MULTI_BIND params[10];
char is_null[10] = {0};
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts[0]);
params[0].buffer = v.ts;
params[0].length = t64_len;
params[0].is_null = is_null;
params[0].num = 10;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b[0]);
params[1].buffer = v.b;
params[1].length = t8_len;
params[1].is_null = is_null;
params[1].num = 10;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1[0]);
params[2].buffer = v.v1;
params[2].length = t8_len;
params[2].is_null = is_null;
params[2].num = 10;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2[0]);
params[3].buffer = v.v2;
params[3].length = t16_len;
params[3].is_null = is_null;
params[3].num = 10;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4[0]);
params[4].buffer = v.v4;
params[4].length = t32_len;
params[4].is_null = is_null;
params[4].num = 10;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8[0]);
params[5].buffer = v.v8;
params[5].length = t64_len;
params[5].is_null = is_null;
params[5].num = 10;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4[0]);
params[6].buffer = v.f4;
params[6].length = float_len;
params[6].is_null = is_null;
params[6].num = 10;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8[0]);
params[7].buffer = v.f8;
params[7].length = double_len;
params[7].is_null = is_null;
params[7].num = 10;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin[0]);
params[8].buffer = v.bin;
params[8].length = bin_len;
params[8].is_null = is_null;
params[8].num = 10;
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = sizeof(v.blob[0]);
params[9].buffer = v.blob;
params[9].length = blob_len;
params[9].is_null = is_null;
params[9].num = 10;
sql = "insert into ? using st1 tags(?,?) values(?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
code = taos_stmt_set_tbname_tags(stmt, "m1", tags);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
int64_t ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts[i] = ts++;
is_null[i] = 0;
v.b[i] = (int8_t)i % 2;
v.v1[i] = (int8_t)i;
v.v2[i] = (int16_t)(i * 2);
v.v4[i] = (int32_t)(i * 4);
v.v8[i] = (int64_t)(i * 8);
v.f4[i] = (float)(i * 40);
v.f8[i] = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin[0]); ++j) {
v.bin[i][j] = (char)(i + '0');
}
strcpy(v.blob[i], "一二三四五六七八九十");
t8_len[i] = sizeof(int8_t);
t16_len[i] = sizeof(int16_t);
t32_len[i] = sizeof(int32_t);
t64_len[i] = sizeof(int64_t);
float_len[i] = sizeof(float);
double_len[i] = sizeof(double);
bin_len[i] = sizeof(v.bin[0]);
blob_len[i] = (int32_t)strlen(v.blob[i]);
}
taos_stmt_bind_param_batch(stmt, params);
taos_stmt_add_batch(stmt);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
TAOS_MULTI_BIND qparams[2];
int8_t v1 = 5;
int16_t v2 = 15;
int32_t tinyLen = sizeof(v1);
int32_t smallLen = sizeof(v2);
qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
qparams[0].buffer_length = sizeof(v1);
qparams[0].buffer = &v1;
qparams[0].length = &tinyLen;
qparams[0].is_null = NULL;
qparams[0].num = 1;
qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
qparams[1].buffer_length = sizeof(v2);
qparams[1].buffer = &v2;
qparams[1].length = &smallLen;
qparams[1].is_null = NULL;
qparams[1].num = 1;
taos_stmt_bind_param(stmt, qparams);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
return;
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
free(t8_len);
free(t16_len);
free(t32_len);
free(t64_len);
free(float_len);
free(double_len);
free(bin_len);
free(blob_len);
}
void retrieve_callback(void* param, TAOS_RES* tres, int numOfRows) {
if (numOfRows > 0) {
printf("%d rows async retrieved\n", numOfRows);
taos_fetch_rows_a(tres, retrieve_callback, param);
} else {
if (numOfRows < 0) {
printf("\033[31masync retrieve failed, code: %d\033[0m\n", numOfRows);
} else {
printf("async retrieve completed\n");
}
taos_free_result(tres);
}
}
void select_callback(void* param, TAOS_RES* tres, int code) {
if (code == 0 && tres) {
taos_fetch_rows_a(tres, retrieve_callback, param);
} else {
printf("\033[31masync select failed, code: %d\033[0m\n", code);
}
}
void verify_async(TAOS* taos) {
prepare_data(taos);
taos_query_a(taos, "select * from meters", select_callback, NULL);
usleep(1000000);
}
void stream_callback(void* param, TAOS_RES* res, TAOS_ROW row) {
if (res == NULL || row == NULL) {
return;
}
int num_fields = taos_num_fields(res);
TAOS_FIELD* fields = taos_fetch_fields(res);
printf("got one row from stream_callback\n");
char temp[256] = {0};
taos_print_row(temp, row, fields, num_fields);
puts(temp);
}
int main(int argc, char* argv[]) {
const char* host = "127.0.0.1";
const char* user = "root";
const char* passwd = "taosdata";
taos_options(TSDB_OPTION_TIMEZONE, "GMT-8");
TAOS* taos = taos_connect(host, user, passwd, "", 0);
if (taos == NULL) {
printf("\033[31mfailed to connect to db, reason:%s\033[0m\n", taos_errstr(taos));
exit(1);
}
const char* info = taos_get_server_info(taos);
printf("server info: %s\n", info);
info = taos_get_client_info(taos);
printf("client info: %s\n", info);
printf("************ verify query *************\n");
verify_query(taos);
printf("********* verify async query **********\n");
verify_async(taos);
printf("************ verify prepare *************\n");
verify_prepare(taos);
printf("************ verify prepare2 *************\n");
verify_prepare2(taos);
printf("************ verify prepare3 *************\n");
verify_prepare3(taos);
printf("done\n");
taos_close(taos);
taos_cleanup();
}

3
examples/c/demoapi.c → tests/script/api/demoapi.c
View File

@ -21,7 +21,6 @@
#ifndef WINDOWS
#include <argp.h>
#endif
#include "osSleep.h"
#include "taos.h"
#define debugPrint(fmt, ...) \
@ -81,11 +80,9 @@ static void prepare_data(TAOS* taos) {
TAOS_RES *res;
res = taos_query(taos, "drop database if exists test;");
taos_free_result(res);
taosMsleep(100);
res = taos_query(taos, "create database test;");
taos_free_result(res);
taosMsleep(100);
if (taos_select_db(taos, "test")) {
errorPrint("%s() LN%d: taos_select_db() failed\n",
__func__, __LINE__);