diff --git a/docs/examples/python/tmq_example.py b/docs/examples/python/tmq_example.py index cee036454ec4d3f4809576a1eee8ac054fcba056..836beb2417c310337d73e678f97810e447824b63 100644 --- a/docs/examples/python/tmq_example.py +++ b/docs/examples/python/tmq_example.py @@ -1,6 +1,58 @@ import taos -from taos.tmq import TaosConsumer -consumer = TaosConsumer('topic_ctb_column', group_id='vg2') -for msg in consumer: - for row in msg: - print(row) +from taos.tmq import * + +conn = taos.connect() + +print("init") +conn.execute("drop database if exists py_tmq") +conn.execute("create database if not exists py_tmq vgroups 2") +conn.select_db("py_tmq") +conn.execute( + "create stable if not exists stb1 (ts timestamp, c1 int, c2 float, c3 binary(10)) tags(t1 int)" +) +conn.execute("create table if not exists tb1 using stb1 tags(1)") +conn.execute("create table if not exists tb2 using stb1 tags(2)") +conn.execute("create table if not exists tb3 using stb1 tags(3)") + +print("create topic") +conn.execute("drop topic if exists topic_ctb_column") +conn.execute( + "create topic if not exists topic_ctb_column as select ts, c1, c2, c3 from stb1" +) + +print("build consumer") +conf = TaosTmqConf() +conf.set("group.id", "tg2") +conf.set("td.connect.user", "root") +conf.set("td.connect.pass", "taosdata") +conf.set("enable.auto.commit", "true") + + +def tmq_commit_cb_print(tmq, resp, offset, param=None): + print(f"commit: {resp}, tmq: {tmq}, offset: {offset}, param: {param}") + + +conf.set_auto_commit_cb(tmq_commit_cb_print, None) +tmq = conf.new_consumer() + +print("build topic list") + +topic_list = TaosTmqList() +topic_list.append("topic_ctb_column") + +print("basic consume loop") +tmq.subscribe(topic_list) + +sub_list = tmq.subscription() + +print("subscribed topics: ", sub_list) + +while 1: + res = tmq.poll(1000) + if res: + topic = res.get_topic_name() + vg = res.get_vgroup_id() + db = res.get_db_name() + print(f"topic: {topic}\nvgroup id: {vg}\ndb: {db}") + for row in res: + print(row)