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260 lines
9.4 KiB
Python
260 lines
9.4 KiB
Python
## sudo -H pip install PyMySQL
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import warnings
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import pymysql.cursors
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import pytest
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from helpers.cluster import ClickHouseCluster
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import time
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import logging
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DICTS = ['configs/dictionaries/mysql_dict1.xml', 'configs/dictionaries/mysql_dict2.xml']
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CONFIG_FILES = ['configs/remote_servers.xml', 'configs/named_collections.xml']
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cluster = ClickHouseCluster(__file__)
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instance = cluster.add_instance('instance', main_configs=CONFIG_FILES, with_mysql=True, dictionaries=DICTS)
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create_table_mysql_template = """
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CREATE TABLE IF NOT EXISTS `test`.`{}` (
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`id` int(11) NOT NULL,
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`value` varchar(50) NOT NULL,
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB;
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"""
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create_clickhouse_dictionary_table_template = """
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CREATE TABLE IF NOT EXISTS `test`.`dict_table_{}` (`id` UInt64, `value` String) ENGINE = Dictionary({})
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"""
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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# time.sleep(30)
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cluster.start()
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# Create a MySQL database
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mysql_connection = get_mysql_conn(cluster)
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create_mysql_db(mysql_connection, 'test')
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mysql_connection.close()
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# Create database in ClickHouse
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instance.query("CREATE DATABASE IF NOT EXISTS test")
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# Create database in ClickChouse using MySQL protocol (will be used for data insertion)
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instance.query("CREATE DATABASE clickhouse_mysql ENGINE = MySQL('mysql57:3306', 'test', 'root', 'clickhouse')")
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yield cluster
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finally:
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cluster.shutdown()
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def test_mysql_dictionaries_custom_query_full_load(started_cluster):
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mysql_connection = get_mysql_conn(started_cluster)
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_1 (id Integer, value_1 Text);")
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_2 (id Integer, value_2 Text);")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_1 VALUES (1, 'Value_1');")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_2 VALUES (1, 'Value_2');")
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query = instance.query
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query("""
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CREATE DICTIONARY test_dictionary_custom_query
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(
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id UInt64,
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value_1 String,
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value_2 String
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)
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PRIMARY KEY id
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LAYOUT(FLAT())
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SOURCE(MYSQL(
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HOST 'mysql57'
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PORT 3306
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USER 'root'
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PASSWORD 'clickhouse'
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QUERY $doc$SELECT id, value_1, value_2 FROM test.test_table_1 INNER JOIN test.test_table_2 USING (id);$doc$))
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LIFETIME(0)
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""")
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result = query("SELECT id, value_1, value_2 FROM test_dictionary_custom_query")
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assert result == '1\tValue_1\tValue_2\n'
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query("DROP DICTIONARY test_dictionary_custom_query;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_1;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_2;")
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def test_mysql_dictionaries_custom_query_partial_load_simple_key(started_cluster):
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mysql_connection = get_mysql_conn(started_cluster)
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_1 (id Integer, value_1 Text);")
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_2 (id Integer, value_2 Text);")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_1 VALUES (1, 'Value_1');")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_2 VALUES (1, 'Value_2');")
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query = instance.query
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query("""
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CREATE DICTIONARY test_dictionary_custom_query
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(
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id UInt64,
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value_1 String,
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value_2 String
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)
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PRIMARY KEY id
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LAYOUT(DIRECT())
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SOURCE(MYSQL(
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HOST 'mysql57'
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PORT 3306
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USER 'root'
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PASSWORD 'clickhouse'
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QUERY $doc$SELECT id, value_1, value_2 FROM test.test_table_1 INNER JOIN test.test_table_2 USING (id) WHERE {condition};$doc$))
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""")
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result = query("SELECT dictGet('test_dictionary_custom_query', ('value_1', 'value_2'), toUInt64(1))")
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assert result == "('Value_1','Value_2')\n"
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query("DROP DICTIONARY test_dictionary_custom_query;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_1;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_2;")
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def test_mysql_dictionaries_custom_query_partial_load_complex_key(started_cluster):
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mysql_connection = get_mysql_conn(started_cluster)
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_1 (id Integer, id_key Text, value_1 Text);")
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table_2 (id Integer, id_key Text, value_2 Text);")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_1 VALUES (1, 'Key', 'Value_1');")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table_2 VALUES (1, 'Key', 'Value_2');")
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query = instance.query
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query("""
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CREATE DICTIONARY test_dictionary_custom_query
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(
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id UInt64,
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id_key String,
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value_1 String,
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value_2 String
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)
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PRIMARY KEY id, id_key
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LAYOUT(COMPLEX_KEY_DIRECT())
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SOURCE(MYSQL(
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HOST 'mysql57'
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PORT 3306
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USER 'root'
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PASSWORD 'clickhouse'
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QUERY $doc$SELECT id, id_key, value_1, value_2 FROM test.test_table_1 INNER JOIN test.test_table_2 USING (id, id_key) WHERE {condition};$doc$))
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""")
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result = query("SELECT dictGet('test_dictionary_custom_query', ('value_1', 'value_2'), (toUInt64(1), 'Key'))")
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assert result == "('Value_1','Value_2')\n"
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query("DROP DICTIONARY test_dictionary_custom_query;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_1;")
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execute_mysql_query(mysql_connection, "DROP TABLE test.test_table_2;")
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def test_predefined_connection_configuration(started_cluster):
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mysql_connection = get_mysql_conn(started_cluster)
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execute_mysql_query(mysql_connection, "DROP TABLE IF EXISTS test.test_table")
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execute_mysql_query(mysql_connection, "CREATE TABLE IF NOT EXISTS test.test_table (id Integer, value Integer);")
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execute_mysql_query(mysql_connection, "INSERT INTO test.test_table VALUES (100, 200);")
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instance.query('''
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DROP DICTIONARY IF EXISTS dict;
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CREATE DICTIONARY dict (id UInt32, value UInt32)
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PRIMARY KEY id
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SOURCE(MYSQL(NAME mysql1))
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LIFETIME(MIN 1 MAX 2)
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LAYOUT(HASHED());
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''')
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result = instance.query("SELECT dictGetUInt32(dict, 'value', toUInt64(100))")
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assert(int(result) == 200)
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instance.query('''
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DROP DICTIONARY dict;
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CREATE DICTIONARY dict (id UInt32, value UInt32)
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PRIMARY KEY id
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SOURCE(MYSQL(NAME mysql2))
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LIFETIME(MIN 1 MAX 2)
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LAYOUT(HASHED());
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''')
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result = instance.query_and_get_error("SELECT dictGetUInt32(dict, 'value', toUInt64(100))")
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instance.query('''
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DROP DICTIONARY dict;
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CREATE DICTIONARY dict (id UInt32, value UInt32)
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PRIMARY KEY id
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SOURCE(MYSQL(NAME unknown_collection))
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LIFETIME(MIN 1 MAX 2)
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LAYOUT(HASHED());
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''')
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result = instance.query_and_get_error("SELECT dictGetUInt32(dict, 'value', toUInt64(100))")
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instance.query('''
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DROP DICTIONARY dict;
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CREATE DICTIONARY dict (id UInt32, value UInt32)
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PRIMARY KEY id
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SOURCE(MYSQL(NAME mysql3 PORT 3306))
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LIFETIME(MIN 1 MAX 2)
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LAYOUT(HASHED());
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''')
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result = instance.query("SELECT dictGetUInt32(dict, 'value', toUInt64(100))")
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assert(int(result) == 200)
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def create_mysql_db(mysql_connection, name):
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with mysql_connection.cursor() as cursor:
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cursor.execute("DROP DATABASE IF EXISTS {}".format(name))
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cursor.execute("CREATE DATABASE {} DEFAULT CHARACTER SET 'utf8'".format(name))
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def prepare_mysql_table(started_cluster, table_name, index):
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mysql_connection = get_mysql_conn(started_cluster)
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# Create table
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create_mysql_table(mysql_connection, table_name + str(index))
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# Insert rows using CH
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query = instance.query
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query(
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"INSERT INTO `clickhouse_mysql`.{}(id, value) select number, concat('{} value ', toString(number)) from numbers(10000) ".format(
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table_name + str(index), table_name + str(index)))
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assert query("SELECT count() FROM `clickhouse_mysql`.{}".format(table_name + str(index))).rstrip() == '10000'
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mysql_connection.close()
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# Create CH Dictionary tables based on MySQL tables
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query(create_clickhouse_dictionary_table_template.format(table_name + str(index), 'dict' + str(index)))
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def get_mysql_conn(started_cluster):
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errors = []
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conn = None
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for _ in range(5):
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try:
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if conn is None:
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conn = pymysql.connect(user='root', password='clickhouse', host=started_cluster.mysql_ip, port=started_cluster.mysql_port)
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else:
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conn.ping(reconnect=True)
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logging.debug(f"MySQL Connection establised: {started_cluster.mysql_ip}:{started_cluster.mysql_port}")
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return conn
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except Exception as e:
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errors += [str(e)]
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time.sleep(1)
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raise Exception("Connection not establised, {}".format(errors))
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def execute_mysql_query(connection, query):
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logging.debug("Execute MySQL query:{}".format(query))
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with warnings.catch_warnings():
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warnings.simplefilter("ignore")
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with connection.cursor() as cursor:
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cursor.execute(query)
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connection.commit()
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def create_mysql_table(conn, table_name):
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with conn.cursor() as cursor:
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cursor.execute(create_table_mysql_template.format(table_name))
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