124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "cJSON.h"
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#include "taos.h"
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#include "tmsg.h"
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#include "types.h"
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static TAOS* use_db() {
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TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
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if (pConn == NULL) {
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return NULL;
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}
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TAOS_RES* pRes = taos_query(pConn, "use db_taosx");
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if (taos_errno(pRes) != 0) {
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printf("error in use db_taosx, reason:%s\n", taos_errstr(pRes));
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return NULL;
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}
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taos_free_result(pRes);
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return pConn;
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}
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static void msg_process(TAOS_RES* msg) {
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printf("-----------topic-------------: %s\n", tmq_get_topic_name(msg));
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printf("db: %s\n", tmq_get_db_name(msg));
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printf("vg: %d\n", tmq_get_vgroup_id(msg));
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TAOS* pConn = use_db();
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if (tmq_get_res_type(msg) == TMQ_RES_TABLE_META || tmq_get_res_type(msg) == TMQ_RES_METADATA) {
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char* result = tmq_get_json_meta(msg);
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printf("meta result: %s\n", result);
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tmq_free_json_meta(result);
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}
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tmq_raw_data raw = {0};
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tmq_get_raw(msg, &raw);
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printf("write raw data type: %d\n", raw.raw_type);
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int32_t ret = tmq_write_raw(pConn, raw);
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printf("write raw data: %s\n", tmq_err2str(ret));
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ASSERT(ret == 0);
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tmq_free_raw(raw);
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taos_close(pConn);
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}
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void tmq_commit_cb_print(tmq_t* tmq, int32_t code, void* param) {
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printf("commit %d tmq %p param %p\n", code, tmq, param);
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}
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tmq_t* build_consumer() {
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tmq_conf_t* conf = tmq_conf_new();
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tmq_conf_set(conf, "group.id", "tg2");
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tmq_conf_set(conf, "client.id", "my app 1");
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tmq_conf_set(conf, "td.connect.user", "root");
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tmq_conf_set(conf, "td.connect.pass", "taosdata");
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tmq_conf_set(conf, "msg.with.table.name", "true");
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tmq_conf_set(conf, "enable.auto.commit", "true");
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tmq_conf_set(conf, "auto.offset.reset", "earliest");
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tmq_conf_set(conf, "msg.consume.excluded", "1");
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tmq_conf_set(conf, "experimental.snapshot.enable", "true");
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tmq_conf_set_auto_commit_cb(conf, tmq_commit_cb_print, NULL);
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tmq_t* tmq = tmq_consumer_new(conf, NULL, 0);
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assert(tmq);
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tmq_conf_destroy(conf);
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return tmq;
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}
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tmq_list_t* build_topic_list() {
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tmq_list_t* topic_list = tmq_list_new();
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tmq_list_append(topic_list, "db_5466_topic");
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return topic_list;
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}
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void basic_consume_loop(tmq_t* tmq, tmq_list_t* topics) {
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int32_t code;
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if ((code = tmq_subscribe(tmq, topics))) {
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fprintf(stderr, "%% Failed to start consuming topics: %s\n", tmq_err2str(code));
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printf("subscribe err\n");
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return;
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}
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int32_t cnt = 0;
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while (1) {
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TAOS_RES* tmqmessage = tmq_consumer_poll(tmq, 5000);
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if (tmqmessage) {
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cnt++;
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msg_process(tmqmessage);
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taos_free_result(tmqmessage);
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} else {
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break;
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}
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}
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code = tmq_consumer_close(tmq);
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if (code)
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fprintf(stderr, "%% Failed to close consumer: %s\n", tmq_err2str(code));
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else
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fprintf(stderr, "%% Consumer closed\n");
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}
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int main(int argc, char* argv[]) {
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tmq_t* tmq = build_consumer();
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tmq_list_t* topic_list = build_topic_list();
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basic_consume_loop(tmq, topic_list);
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tmq_list_destroy(topic_list);
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} |