diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c index cb52522cf326fcd05eb858d933edef0cf1c22edf..ff050dbbbf79a12508691e07195bc2ea6b55437b 100644 --- a/src/client/src/tscSql.c +++ b/src/client/src/tscSql.c @@ -724,6 +724,13 @@ int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields) return len; } +static void asyncCallback(void *param, TAOS_RES *tres, int code) { + assert(param != NULL); + SSqlObj *pSql = ((SSqlObj *)param); + pSql->res.code = code; + sem_post(&pSql->rspSem); +} + int taos_validate_sql(TAOS *taos, const char *sql) { STscObj *pObj = (STscObj *)taos; if (pObj == NULL || pObj->signature != pObj) { @@ -732,7 +739,8 @@ int taos_validate_sql(TAOS *taos, const char *sql) { } SSqlObj* pSql = calloc(1, sizeof(SSqlObj)); - + pSql->pTscObj = taos; + pSql->signature = pSql; SSqlRes *pRes = &pSql->res; SSqlCmd *pCmd = &pSql->cmd; @@ -766,10 +774,17 @@ int taos_validate_sql(TAOS *taos, const char *sql) { pCmd->pTableList = NULL; } - pRes->code = (uint8_t)tsParseSql(pSql, false); - int code = pRes->code; - - tscDebug("%p Valid SQL result:%d, %s pObj:%p", pSql, pRes->code, taos_errstr(taos), pObj); + pSql->fp = asyncCallback; + pSql->fetchFp = asyncCallback; + pSql->param = pSql; + int code = tsParseSql(pSql, true); + if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) { + sem_wait(&pSql->rspSem); + code = pSql->res.code; + } + if (code != TSDB_CODE_SUCCESS) { + tscDebug("%p Valid SQL result:%d, %s pObj:%p", pSql, code, taos_errstr(taos), pObj); + } taos_free_result(pSql); return code; @@ -865,6 +880,8 @@ int taos_load_table_info(TAOS *taos, const char *tableNameList) { } SSqlObj* pSql = calloc(1, sizeof(SSqlObj)); + pSql->pTscObj = taos; + pSql->signature = pSql; SSqlRes *pRes = &pSql->res; pRes->numOfTotal = 0; // the number of getting table meta from server diff --git a/src/client/src/tscStream.c b/src/client/src/tscStream.c index 7c188ec96975f28e1bc5d692ed4e2c98ac505afb..b07627c87bafd1920cedb106c2378843babb0171 100644 --- a/src/client/src/tscStream.c +++ b/src/client/src/tscStream.c @@ -122,7 +122,7 @@ static void tscProcessStreamTimer(void *handle, void *tmrId) { pQueryInfo->window.ekey = pStream->etime; } } else { - pQueryInfo->window.skey = pStream->stime - pStream->interval; + pQueryInfo->window.skey = pStream->stime; int64_t etime = taosGetTimestamp(pStream->precision); // delay to wait all data in last time window if (pStream->precision == TSDB_TIME_PRECISION_MICRO) { @@ -232,6 +232,9 @@ static void tscProcessStreamRetrieveResult(void *param, TAOS_RES *res, int numOf (*pStream->fp)(pStream->param, res, row); } + if (!pStream->isProject) { + pStream->stime += pStream->slidingTime; + } // actually only one row is returned. this following is not necessary taos_fetch_rows_a(res, tscProcessStreamRetrieveResult, pStream); } else { // numOfRows == 0, all data has been retrieved @@ -432,6 +435,7 @@ static int64_t tscGetStreamStartTimestamp(SSqlObj *pSql, SSqlStream *pStream, in } else { // timewindow based aggregation stream if (stime == 0) { // no data in meter till now stime = ((int64_t)taosGetTimestamp(pStream->precision) / pStream->interval) * pStream->interval; + stime -= pStream->interval; tscWarn("%p stream:%p, last timestamp:0, reset to:%" PRId64, pSql, pStream, stime); } else { int64_t newStime = (stime / pStream->interval) * pStream->interval; diff --git a/src/client/src/tscSub.c b/src/client/src/tscSub.c index 2c5035c2ef66ddc40c5551b335a51acfd8a6b14a..526f38047557af01f4a04f8cf6f3af4657f2a675 100644 --- a/src/client/src/tscSub.c +++ b/src/client/src/tscSub.c @@ -34,6 +34,7 @@ typedef struct SSubscriptionProgress { typedef struct SSub { void * signature; char topic[32]; + sem_t sem; int64_t lastSyncTime; int64_t lastConsumeTime; TAOS * taos; @@ -83,84 +84,108 @@ void tscUpdateSubscriptionProgress(void* sub, int64_t uid, TSKEY ts) { static void asyncCallback(void *param, TAOS_RES *tres, int code) { assert(param != NULL); - SSqlObj *pSql = ((SSqlObj *)param); - - pSql->res.code = code; - sem_post(&pSql->rspSem); + SSub *pSub = ((SSub *)param); + pSub->pSql->res.code = code; + sem_post(&pSub->sem); } static SSub* tscCreateSubscription(STscObj* pObj, const char* topic, const char* sql) { - SSub* pSub = NULL; - - TRY( 8 ) { - SSqlObj* pSql = calloc_throw(1, sizeof(SSqlObj)); - CLEANUP_PUSH_FREE(true, pSql); - SSqlCmd *pCmd = &pSql->cmd; - SSqlRes *pRes = &pSql->res; - - if (tsem_init(&pSql->rspSem, 0, 0) == -1) { - THROW(TAOS_SYSTEM_ERROR(errno)); - } - CLEANUP_PUSH_INT_PTR(true, tsem_destroy, &pSql->rspSem); + int code = TSDB_CODE_SUCCESS, line = __LINE__; + SSqlObj* pSql = NULL; - pSql->signature = pSql; - pSql->param = pSql; - pSql->pTscObj = pObj; - pSql->maxRetry = TSDB_MAX_REPLICA; - pSql->fp = asyncCallback; - - int code = tscAllocPayload(pCmd, TSDB_DEFAULT_PAYLOAD_SIZE); - if (code != TSDB_CODE_SUCCESS) { - THROW(code); - } - CLEANUP_PUSH_FREE(true, pCmd->payload); + SSub* pSub = calloc(1, sizeof(SSub)); + if (pSub == NULL) { + line = __LINE__; + code = TSDB_CODE_TSC_OUT_OF_MEMORY; + goto fail; + } + pSub->signature = pSub; + if (tsem_init(&pSub->sem, 0, 0) == -1) { + line = __LINE__; + code = TAOS_SYSTEM_ERROR(errno); + goto fail; + } + tstrncpy(pSub->topic, topic, sizeof(pSub->topic)); + pSub->progress = taosArrayInit(32, sizeof(SSubscriptionProgress)); + if (pSub->progress == NULL) { + line = __LINE__; + code = TSDB_CODE_TSC_OUT_OF_MEMORY; + goto fail; + } - pRes->qhandle = 0; - pRes->numOfRows = 1; + pSql = calloc(1, sizeof(SSqlObj)); + if (pSql == NULL) { + line = __LINE__; + code = TSDB_CODE_TSC_OUT_OF_MEMORY; + goto fail; + } + pSql->signature = pSql; + pSql->pTscObj = pObj; + pSql->pSubscription = pSub; + pSub->pSql = pSql; - pSql->sqlstr = strdup_throw(sql); - CLEANUP_PUSH_FREE(true, pSql->sqlstr); - strtolower(pSql->sqlstr, pSql->sqlstr); + SSqlCmd* pCmd = &pSql->cmd; + SSqlRes* pRes = &pSql->res; + if (tsem_init(&pSql->rspSem, 0, 0) == -1) { + line = __LINE__; + code = TAOS_SYSTEM_ERROR(errno); + goto fail; + } - code = tsParseSql(pSql, false); - if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) { - // wait for the callback function to post the semaphore - sem_wait(&pSql->rspSem); - code = pSql->res.code; - } - if (code != TSDB_CODE_SUCCESS) { - tscError("failed to parse sql statement: %s, error: %s", pSub->topic, tstrerror(code)); - THROW( code ); - } + pSql->param = pSub; + pSql->maxRetry = TSDB_MAX_REPLICA; + pSql->fp = asyncCallback; + pSql->fetchFp = asyncCallback; + pSql->sqlstr = strdup(sql); + if (pSql->sqlstr == NULL) { + line = __LINE__; + code = TSDB_CODE_TSC_OUT_OF_MEMORY; + goto fail; + } + strtolower(pSql->sqlstr, pSql->sqlstr); + pRes->qhandle = 0; + pRes->numOfRows = 1; + + code = tscAllocPayload(pCmd, TSDB_DEFAULT_PAYLOAD_SIZE); + if (code != TSDB_CODE_SUCCESS) { + line = __LINE__; + goto fail; + } - if (pSql->cmd.command != TSDB_SQL_SELECT) { - tscError("only 'select' statement is allowed in subscription: %s", pSub->topic); - THROW( -1 ); // TODO - } + code = tsParseSql(pSql, false); + if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) { + sem_wait(&pSub->sem); + code = pSql->res.code; + } + if (code != TSDB_CODE_SUCCESS) { + line = __LINE__; + goto fail; + } - pSub = calloc_throw(1, sizeof(SSub)); - CLEANUP_PUSH_FREE(true, pSub); - pSql->pSubscription = pSub; - pSub->pSql = pSql; - pSub->signature = pSub; - strncpy(pSub->topic, topic, sizeof(pSub->topic)); - pSub->topic[sizeof(pSub->topic) - 1] = 0; - pSub->progress = taosArrayInit(32, sizeof(SSubscriptionProgress)); - if (pSub->progress == NULL) { - THROW(TSDB_CODE_TSC_OUT_OF_MEMORY); - } + if (pSql->cmd.command != TSDB_SQL_SELECT) { + line = __LINE__; + code = TSDB_CODE_TSC_INVALID_SQL; + goto fail; + } - CLEANUP_EXECUTE(); + return pSub; - } CATCH( code ) { - tscError("failed to create subscription object: %s", tstrerror(code)); - CLEANUP_EXECUTE(); +fail: + tscError("tscCreateSubscription failed at line %d, reason: %s", line, tstrerror(code)); + if (pSql != NULL) { + tscFreeSqlObj(pSql); + pSql = NULL; + } + if (pSub != NULL) { + taosArrayDestroy(pSub->progress); + tsem_destroy(&pSub->sem); + free(pSub); pSub = NULL; + } - } END_TRY - - return pSub; + terrno = code; + return NULL; } @@ -405,9 +430,10 @@ TAOS_RES *taos_consume(TAOS_SUB *tsub) { tscGetTableMetaInfoFromCmd(&pSql->cmd, 0, 0)->vgroupIndex = 0; pSql->fp = asyncCallback; - pSql->param = pSql; + pSql->fetchFp = asyncCallback; + pSql->param = pSub; tscDoQuery(pSql); - sem_wait(&pSql->rspSem); + sem_wait(&pSub->sem); if (pRes->code != TSDB_CODE_SUCCESS) { continue; @@ -437,7 +463,9 @@ void taos_unsubscribe(TAOS_SUB *tsub, int keepProgress) { } if (keepProgress) { - tscSaveSubscriptionProgress(pSub); + if (pSub->progress != NULL) { + tscSaveSubscriptionProgress(pSub); + } } else { char path[256]; sprintf(path, "%s/subscribe/%s", tsDataDir, pSub->topic); @@ -448,6 +476,7 @@ void taos_unsubscribe(TAOS_SUB *tsub, int keepProgress) { tscFreeSqlObj(pSub->pSql); taosArrayDestroy(pSub->progress); + tsem_destroy(&pSub->sem); memset(pSub, 0, sizeof(*pSub)); free(pSub); } diff --git a/src/inc/taos.h b/src/inc/taos.h index d6f188357230d2e2f02ce66b0b66c3c74b3c39f0..1d609bc7dbb7f5fe9bc1c26b169fcbdbac973cef 100644 --- a/src/inc/taos.h +++ b/src/inc/taos.h @@ -67,8 +67,6 @@ DLL_EXPORT void taos_init(); DLL_EXPORT void taos_cleanup(); DLL_EXPORT int taos_options(TSDB_OPTION option, const void *arg, ...); DLL_EXPORT TAOS *taos_connect(const char *ip, const char *user, const char *pass, const char *db, uint16_t port); -DLL_EXPORT TAOS *taos_connect_c(const char *ip, uint8_t ipLen, const char *user, uint8_t userLen, - const char *pass, uint8_t passLen, const char *db, uint8_t dbLen, uint16_t port); DLL_EXPORT void taos_close(TAOS *taos); typedef struct TAOS_BIND { @@ -90,7 +88,6 @@ TAOS_RES * taos_stmt_use_result(TAOS_STMT *stmt); int taos_stmt_close(TAOS_STMT *stmt); DLL_EXPORT TAOS_RES *taos_query(TAOS *taos, const char *sql); -DLL_EXPORT TAOS_RES *taos_query_c(TAOS *taos, const char *sql, uint32_t sqlLen); DLL_EXPORT TAOS_ROW taos_fetch_row(TAOS_RES *res); DLL_EXPORT int taos_result_precision(TAOS_RES *res); // get the time precision of result DLL_EXPORT void taos_free_result(TAOS_RES *res); diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c index b4f825a7c2ccb6ca1f7f457fba812f6046e6cd77..906d0cfe678e89d2fb357bf3572f7e61ade70cb2 100644 --- a/src/query/src/qExecutor.c +++ b/src/query/src/qExecutor.c @@ -4964,7 +4964,7 @@ static void tableMultiOutputProcess(SQInfo *pQInfo, STableQueryInfo* pTableInfo) pQuery->current->lastKey, pQuery->window.ekey); } else if (Q_STATUS_EQUAL(pQuery->status, QUERY_COMPLETED)) { STableIdInfo tidInfo; - STableId* id = TSDB_TABLEID(pQuery->current); + STableId* id = TSDB_TABLEID(pQuery->current->pTable); tidInfo.uid = id->uid; tidInfo.tid = id->tid; diff --git a/tests/examples/c/apitest.c b/tests/examples/c/apitest.c new file mode 100644 index 0000000000000000000000000000000000000000..759e16d1de285c9490d7f1af7a94de81dbadb6e4 --- /dev/null +++ b/tests/examples/c/apitest.c @@ -0,0 +1,474 @@ +// sample code to verify all TDengine API +// to compile: gcc -o apitest apitest.c -ltaos + +#include +#include +#include +#include +#include + + +static void prepare_data(TAOS* taos) { + taos_query(taos, "drop database if exists test;"); + usleep(100000); + taos_query(taos, "create database test;"); + usleep(100000); + taos_select_db(taos, "test"); + + taos_query(taos, "create table meters(ts timestamp, a int) tags(area int);"); + + taos_query(taos, "create table t0 using meters tags(0);"); + taos_query(taos, "create table t1 using meters tags(1);"); + taos_query(taos, "create table t2 using meters tags(2);"); + taos_query(taos, "create table t3 using meters tags(3);"); + taos_query(taos, "create table t4 using meters tags(4);"); + taos_query(taos, "create table t5 using meters tags(5);"); + taos_query(taos, "create table t6 using meters tags(6);"); + taos_query(taos, "create table t7 using meters tags(7);"); + taos_query(taos, "create table t8 using meters tags(8);"); + taos_query(taos, "create table t9 using meters tags(9);"); + + TAOS_RES* res = 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(res); + if (affected != 18) { + printf("\033[31m%d rows affected by last insert statement, but it should be 18\033[0m\n", affected); + } + // 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]; + 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(taos, "select * from meters"); + 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(taos, "select * from t0"); + check_row_count(__LINE__, res, 3); + taos_free_result(res); + + res = taos_query(taos, "select * from nonexisttable"); + code = taos_errno(res); + printf("code=%d, error msg=%s\n", code, taos_errstr(res)); + taos_free_result(res); + + res = taos_query(taos, "select * from meters"); + taos_stop_query(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); +} + +static void verify_subscribe(TAOS* taos) { + prepare_data(taos); + + TAOS_SUB* tsub = taos_subscribe(taos, 0, "test", "select * from meters;", NULL, NULL, 0); + TAOS_RES* res = taos_consume(tsub); + check_row_count(__LINE__, res, 18); + + res = taos_consume(tsub); + check_row_count(__LINE__, res, 0); + + taos_query(taos, "insert into t0 values('2020-01-01 00:02:00.001', 0);"); + taos_query(taos, "insert into t8 values('2020-01-01 00:01:03.000', 0);"); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 2); + + taos_query(taos, "insert into t2 values('2020-01-01 00:01:02.001', 0);"); + taos_query(taos, "insert into t1 values('2020-01-01 00:03:00.001', 0);"); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 2); + + taos_query(taos, "insert into t1 values('2020-01-01 00:03:00.002', 0);"); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 1); + + // keep progress information and restart subscription + taos_unsubscribe(tsub, 1); + taos_query(taos, "insert into t0 values('2020-01-01 00:04:00.000', 0);"); + tsub = taos_subscribe(taos, 1, "test", "select * from meters;", NULL, NULL, 0); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 24); + + // keep progress information and continue previous subscription + taos_unsubscribe(tsub, 1); + tsub = taos_subscribe(taos, 0, "test", "select * from meters;", NULL, NULL, 0); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 0); + + // don't keep progress information and continue previous subscription + taos_unsubscribe(tsub, 0); + tsub = taos_subscribe(taos, 0, "test", "select * from meters;", NULL, NULL, 0); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 24); + + // single meter subscription + + taos_unsubscribe(tsub, 0); + tsub = taos_subscribe(taos, 0, "test", "select * from t0;", NULL, NULL, 0); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 5); + + res = taos_consume(tsub); + check_row_count(__LINE__, res, 0); + + taos_query(taos, "insert into t0 values('2020-01-01 00:04:00.001', 0);"); + res = taos_consume(tsub); + check_row_count(__LINE__, res, 1); + + taos_unsubscribe(tsub, 0); + + int blockFetch = 0; + tsub = taos_subscribe(taos, 1, "test", "select * from meters;", subscribe_callback, &blockFetch, 1000); + usleep(2000000); + taos_query(taos, "insert into t0 values('2020-01-01 00:05:00.001', 0);"); + usleep(2000000); + taos_unsubscribe(tsub, 0); +} + + +void verify_prepare(TAOS* taos) { + TAOS_RES* result = taos_query(taos, "drop database if exists test;"); + usleep(100000); + 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; + 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}; + + TAOS_STMT* stmt = taos_stmt_init(taos); + TAOS_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 = ¶ms[0].buffer_length; + params[0].is_null = NULL; + + params[1].buffer_type = TSDB_DATA_TYPE_BOOL; + params[1].buffer_length = sizeof(v.b); + params[1].buffer = &v.b; + params[1].length = ¶ms[1].buffer_length; + params[1].is_null = NULL; + + params[2].buffer_type = TSDB_DATA_TYPE_TINYINT; + params[2].buffer_length = sizeof(v.v1); + params[2].buffer = &v.v1; + params[2].length = ¶ms[2].buffer_length; + params[2].is_null = NULL; + + params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT; + params[3].buffer_length = sizeof(v.v2); + params[3].buffer = &v.v2; + params[3].length = ¶ms[3].buffer_length; + params[3].is_null = NULL; + + params[4].buffer_type = TSDB_DATA_TYPE_INT; + params[4].buffer_length = sizeof(v.v4); + params[4].buffer = &v.v4; + params[4].length = ¶ms[4].buffer_length; + params[4].is_null = NULL; + + params[5].buffer_type = TSDB_DATA_TYPE_BIGINT; + params[5].buffer_length = sizeof(v.v8); + params[5].buffer = &v.v8; + params[5].length = ¶ms[5].buffer_length; + params[5].is_null = NULL; + + params[6].buffer_type = TSDB_DATA_TYPE_FLOAT; + params[6].buffer_length = sizeof(v.f4); + params[6].buffer = &v.f4; + params[6].length = ¶ms[6].buffer_length; + params[6].is_null = NULL; + + params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE; + params[7].buffer_length = sizeof(v.f8); + params[7].buffer = &v.f8; + params[7].length = ¶ms[7].buffer_length; + params[7].is_null = NULL; + + params[8].buffer_type = TSDB_DATA_TYPE_BINARY; + params[8].buffer_length = sizeof(v.bin); + params[8].buffer = v.bin; + params[8].length = ¶ms[8].buffer_length; + params[8].is_null = NULL; + + 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 = v.blob; + params[9].length = ¶ms[9].buffer_length; + params[9].is_null = NULL; + + int 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. code:0x%x\033[0m\n", code); + } + 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) - 1; ++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.\033[0m\n"); + 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.\033[0m\n"); + 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); + char temp[256]; + + // fetch the records row by row + while ((row = taos_fetch_row(result))) { + rows++; + taos_print_row(temp, row, fields, num_fields); + printf("%s\n", temp); + } + + taos_free_result(result); + taos_stmt_close(stmt); +} + +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) { + 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]; + taos_print_row(temp, row, fields, num_fields); + puts(temp); +} + +void verify_stream(TAOS* taos) { + prepare_data(taos); + TAOS_STREAM* strm = taos_open_stream( + taos, + "select count(*) from meters interval(1m)", + stream_callback, + 0, + NULL, + NULL); + printf("waiting for stream data\n"); + usleep(100000); + taos_query(taos, "insert into t0 values(now, 0)(now+5s,1)(now+10s, 2);"); + usleep(200000000); + taos_close_stream(strm); +} + +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_init(); + + 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); + } + + 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 subscribe ************\n"); + verify_subscribe(taos); + + printf("************ verify prepare *************\n"); + verify_prepare(taos); + + printf("************ verify stream *************\n"); + verify_stream(taos); + printf("done\n"); + + taos_close(taos); + taos_cleanup(); +} \ No newline at end of file diff --git a/tests/examples/c/makefile b/tests/examples/c/makefile index 0a4b8ee9d2bd00ab3daaac0c3a93497de4fd03f8..f9653c9c9678f572190f2f54ac10c039e8b86a44 100644 --- a/tests/examples/c/makefile +++ b/tests/examples/c/makefile @@ -4,7 +4,6 @@ ROOT=./ TARGET=exe LFLAGS = '-Wl,-rpath,/usr/local/taos/driver/' -ltaos -lpthread -lm -lrt -#LFLAGS = '-Wl,-rpath,/home/zbm/project/td/debug/build/lib/' -L/home/zbm/project/td/debug/build/lib -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 -msse4.2 -Wno-unused-function -D_M_X64 \ -I/usr/local/taos/include -std=gnu99 @@ -16,6 +15,7 @@ exe: 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) clean: rm $(ROOT)/asyncdemo