HTHou commented on code in PR #13443: URL: https://github.com/apache/iotdb/pull/13443#discussion_r1751148063
########## iotdb-client/client-py/TableModelSessionPoolExample.py: ########## @@ -0,0 +1,160 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# +import threading + +import numpy as np + +from iotdb.SessionPool import PoolConfig, SessionPool +from iotdb.utils.IoTDBConstants import TSDataType +from iotdb.utils.NumpyTablet import NumpyTablet +from iotdb.utils.Tablet import ColumnType, Tablet + + +def prepare_data(): + print("create database") + # Get a session from the pool + session = session_pool.get_session() + session.execute_non_query_statement("CREATE DATABASE IF NOT EXISTS db1") + session.execute_non_query_statement('USE "db1"') + session.execute_non_query_statement( + "CREATE TABLE table0 (id1 string id, attr1 string attribute, " + + "m1 double " + + "measurement)" + ) + session.execute_non_query_statement( + "CREATE TABLE table1 (id1 string id, attr1 string attribute, " + + "m1 double " + + "measurement)" + ) + + print("now the tables are:") + # show result + res = session.execute_query_statement("SHOW TABLES") + while res.has_next(): + print(res.next()) + + session_pool.put_back(session) + + +def insert_data(num: int): + print("insert data for table" + str(num)) + # Get a session from the pool + session = session_pool.get_session() + column_names = [ + "id1", + "attr1", + "m1", + ] + data_types = [ + TSDataType.STRING, + TSDataType.STRING, + TSDataType.DOUBLE, + ] + column_types = [ColumnType.ID, ColumnType.ATTRIBUTE, ColumnType.MEASUREMENT] + timestamps = [] + values = [] + for row in range(15): + timestamps.append(row) + values.append(["id:" + str(row), "attr:" + str(row), row * 1.0]) + tablet = Tablet( + "table" + str(num), column_names, data_types, values, timestamps, column_types + ) + session.insert_relational_tablet(tablet) + session.execute_non_query_statement("FLush") + + np_timestamps = np.arange(15, 30, dtype=np.dtype(">i8")) + np_values = [ + np.array(["id:{}".format(i) for i in range(15, 30)]), + np.array(["attr:{}".format(i) for i in range(15, 30)]), + np.linspace(15.0, 29.0, num=15, dtype=TSDataType.DOUBLE.np_dtype()), + ] + + np_tablet = NumpyTablet( + "table" + str(num), + column_names, + data_types, + np_values, + np_timestamps, + column_types=column_types, + ) + session.insert_relational_tablet(np_tablet) + session_pool.put_back(session) + + +def query_data(): + # Get a session from the pool + session = session_pool.get_session() + + print("get data from table0") + res = session.execute_query_statement("select * from table0") + while res.has_next(): + print(res.next()) + + print("get data from table1") + res = session.execute_query_statement("select * from table0") + while res.has_next(): + print(res.next()) + + session_pool.put_back(session) + + +def delete_data(): + session = session_pool.get_session() + session.execute_non_query_statement("drop database db1") + print("data has been deleted. now the devices are:") + res = session.execute_statement("show databases") + while res.has_next(): + print(res.next()) + session_pool.put_back(session) + + +ip = "127.0.0.1" +port = "6667" +username = "root" +password = "root" +pool_config = PoolConfig( + node_urls=["127.0.0.1:6667", "127.0.0.1:6668", "127.0.0.1:6669"], + user_name=username, + password=password, + fetch_size=1024, + time_zone="UTC+8", + max_retry=3, + sql_dialect="table", + database="db1", +) +max_pool_size = 5 +wait_timeout_in_ms = 3000 + +# Create a session pool +session_pool = SessionPool(pool_config, max_pool_size, wait_timeout_in_ms) Review Comment: Don’t know +1. @ycycse do you have any idea? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
