ClickHouse/dbms/tests/integration/test_mysql_database_engine/test.py

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from contextlib import contextmanager
import time
import pytest
## sudo -H pip install PyMySQL
import pymysql.cursors
from helpers.cluster import ClickHouseCluster
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], with_mysql = True)
create_table_normal_sql_template = """
CREATE TABLE `clickhouse`.`{}` (
`id` int(11) NOT NULL,
`name` varchar(50) NOT NULL,
`age` int NOT NULL default 0,
`money` int NOT NULL default 0,
PRIMARY KEY (`id`)
) ENGINE=InnoDB;
"""
create_table_mysql_style_sql_template = """
CREATE TABLE `clickhouse`.`{}` (
`id` int(11) NOT NULL,
`float` float NOT NULL,
`Float32` float NOT NULL,
`test``name` varchar(50) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB;
"""
drop_table_sql_template = "DROP TABLE `clickhouse`.`{}`"
add_column_sql_template = "ALTER TABLE `clickhouse`.`{}` ADD COLUMN `pid` int(11)"
del_column_sql_template = "ALTER TABLE `clickhouse`.`{}` DROP COLUMN `pid`"
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
conn = get_mysql_conn()
## create mysql db and table
create_mysql_db(conn, 'clickhouse')
node1.query("CREATE DATABASE clickhouse_mysql ENGINE = MySQL('mysql1:3306', 'clickhouse', 'root', 'clickhouse')")
yield cluster
finally:
cluster.shutdown()
def test_sync_tables_list_between_clickhouse_and_mysql(started_cluster):
mysql_connection = get_mysql_conn()
assert node1.query('SHOW TABLES FROM clickhouse_mysql FORMAT TSV').rstrip() == ''
create_normal_mysql_table(mysql_connection, 'first_mysql_table')
assert node1.query("SHOW TABLES FROM clickhouse_mysql LIKE 'first_mysql_table' FORMAT TSV").rstrip() == 'first_mysql_table'
create_normal_mysql_table(mysql_connection, 'second_mysql_table')
assert node1.query("SHOW TABLES FROM clickhouse_mysql LIKE 'second_mysql_table' FORMAT TSV").rstrip() == 'second_mysql_table'
drop_mysql_table(mysql_connection, 'second_mysql_table')
assert node1.query("SHOW TABLES FROM clickhouse_mysql LIKE 'second_mysql_table' FORMAT TSV").rstrip() == ''
mysql_connection.close()
def test_sync_tables_structure_between_clickhouse_and_mysql(started_cluster):
mysql_connection = get_mysql_conn()
create_normal_mysql_table(mysql_connection, 'test_sync_column')
assert node1.query(
"SELECT name FROM system.columns WHERE table = 'test_sync_column' AND database = 'clickhouse_mysql' AND name = 'pid' ").rstrip() == ''
time.sleep(3)
add_mysql_table_column(mysql_connection, "test_sync_column")
assert node1.query(
"SELECT name FROM system.columns WHERE table = 'test_sync_column' AND database = 'clickhouse_mysql' AND name = 'pid' ").rstrip() == 'pid'
time.sleep(3)
drop_mysql_table_column(mysql_connection, "test_sync_column")
assert node1.query(
"SELECT name FROM system.columns WHERE table = 'test_sync_column' AND database = 'clickhouse_mysql' AND name = 'pid' ").rstrip() == ''
mysql_connection.close()
def test_insert_select(started_cluster):
mysql_connection = get_mysql_conn()
create_normal_mysql_table(mysql_connection, 'test_insert_select')
assert node1.query("SELECT count() FROM `clickhouse_mysql`.{}".format('test_insert_select')).rstrip() == '0'
node1.query("INSERT INTO `clickhouse_mysql`.{}(id, name, money) select number, concat('name_', toString(number)), 3 from numbers(10000) ".format('test_insert_select'))
assert node1.query("SELECT count() FROM `clickhouse_mysql`.{}".format('test_insert_select')).rstrip() == '10000'
assert node1.query("SELECT sum(money) FROM `clickhouse_mysql`.{}".format('test_insert_select')).rstrip() == '30000'
mysql_connection.close()
def test_insert_select_with_mysql_style_table(started_cluster):
mysql_connection = get_mysql_conn()
create_mysql_style_mysql_table(mysql_connection, 'test_mysql``_style_table')
assert node1.query("SELECT count() FROM `clickhouse_mysql`.`{}`".format('test_mysql\`_style_table')).rstrip() == '0'
node1.query("INSERT INTO `clickhouse_mysql`.`{}`(id, `float`, `Float32`, `test\`name`) select number, 3, 3, 'name' from numbers(10000) ".format('test_mysql\`_style_table'))
assert node1.query("SELECT count() FROM `clickhouse_mysql`.`{}`".format('test_mysql\`_style_table')).rstrip() == '10000'
assert node1.query("SELECT sum(`float`) FROM `clickhouse_mysql`.`{}`".format('test_mysql\`_style_table')).rstrip() == '30000'
mysql_connection.close()
def get_mysql_conn():
conn = pymysql.connect(user='root', password='clickhouse', host='127.0.0.1', port=3308)
return conn
def create_mysql_db(conn, name):
with conn.cursor() as cursor:
cursor.execute(
"CREATE DATABASE {} DEFAULT CHARACTER SET 'utf8'".format(name))
def create_normal_mysql_table(conn, table_name):
with conn.cursor() as cursor:
cursor.execute(create_table_normal_sql_template.format(table_name))
def create_mysql_style_mysql_table(conn, table_name):
with conn.cursor() as cursor:
cursor.execute(create_table_mysql_style_sql_template.format(table_name))
def drop_mysql_table(conn, table_name):
with conn.cursor() as cursor:
cursor.execute(drop_table_sql_template.format(table_name))
def add_mysql_table_column(conn, table_name):
with conn.cursor() as cursor:
cursor.execute(add_column_sql_template.format(table_name))
def drop_mysql_table_column(conn, table_name):
with conn.cursor() as cursor:
cursor.execute(del_column_sql_template.format(table_name))