mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-02 04:22:03 +00:00
111 lines
3.9 KiB
Python
111 lines
3.9 KiB
Python
## sudo -H pip install PyMySQL
|
|
import pymysql.cursors
|
|
import pytest
|
|
from helpers.cluster import ClickHouseCluster
|
|
import time
|
|
import logging
|
|
|
|
DICTS = ['configs/dictionaries/mysql_dict1.xml', 'configs/dictionaries/mysql_dict2.xml']
|
|
CONFIG_FILES = ['configs/log_conf.xml', 'configs/remote_servers.xml']
|
|
cluster = ClickHouseCluster(__file__)
|
|
instance = cluster.add_instance('instance', main_configs=CONFIG_FILES, with_mysql=True, dictionaries=DICTS)
|
|
|
|
create_table_mysql_template = """
|
|
CREATE TABLE IF NOT EXISTS `test`.`{}` (
|
|
`id` int(11) NOT NULL,
|
|
`value` varchar(50) NOT NULL,
|
|
PRIMARY KEY (`id`)
|
|
) ENGINE=InnoDB;
|
|
"""
|
|
|
|
create_clickhouse_dictionary_table_template = """
|
|
CREATE TABLE IF NOT EXISTS `test`.`dict_table_{}` (`id` UInt64, `value` String) ENGINE = Dictionary({})
|
|
"""
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def started_cluster():
|
|
try:
|
|
# time.sleep(30)
|
|
cluster.start()
|
|
|
|
# Create a MySQL database
|
|
mysql_connection = get_mysql_conn(cluster)
|
|
create_mysql_db(mysql_connection, 'test')
|
|
mysql_connection.close()
|
|
|
|
# Create database in ClickHouse
|
|
instance.query("CREATE DATABASE IF NOT EXISTS test")
|
|
|
|
# Create database in ClickChouse using MySQL protocol (will be used for data insertion)
|
|
instance.query("CREATE DATABASE clickhouse_mysql ENGINE = MySQL('mysql57:3306', 'test', 'root', 'clickhouse')")
|
|
|
|
yield cluster
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
def test_load_mysql_dictionaries(started_cluster):
|
|
# Load dictionaries
|
|
query = instance.query
|
|
query("SYSTEM RELOAD DICTIONARIES")
|
|
|
|
for n in range(0, 5):
|
|
# Create MySQL tables, fill them and create CH dict tables
|
|
prepare_mysql_table(started_cluster, 'test', str(n))
|
|
|
|
# Check dictionaries are loaded and have correct number of elements
|
|
for n in range(0, 100):
|
|
# Force reload of dictionaries (each 10 iteration)
|
|
if (n % 10) == 0:
|
|
query("SYSTEM RELOAD DICTIONARIES")
|
|
|
|
# Check number of row
|
|
assert query("SELECT count() FROM `test`.`dict_table_{}`".format('test' + str(n % 5))).rstrip() == '10000'
|
|
|
|
|
|
def create_mysql_db(mysql_connection, name):
|
|
with mysql_connection.cursor() as cursor:
|
|
cursor.execute("DROP DATABASE IF EXISTS {}".format(name))
|
|
cursor.execute("CREATE DATABASE {} DEFAULT CHARACTER SET 'utf8'".format(name))
|
|
|
|
|
|
def prepare_mysql_table(started_cluster, table_name, index):
|
|
mysql_connection = get_mysql_conn(started_cluster)
|
|
|
|
# Create table
|
|
create_mysql_table(mysql_connection, table_name + str(index))
|
|
|
|
# Insert rows using CH
|
|
query = instance.query
|
|
query(
|
|
"INSERT INTO `clickhouse_mysql`.{}(id, value) select number, concat('{} value ', toString(number)) from numbers(10000) ".format(
|
|
table_name + str(index), table_name + str(index)))
|
|
assert query("SELECT count() FROM `clickhouse_mysql`.{}".format(table_name + str(index))).rstrip() == '10000'
|
|
mysql_connection.close()
|
|
|
|
# Create CH Dictionary tables based on MySQL tables
|
|
query(create_clickhouse_dictionary_table_template.format(table_name + str(index), 'dict' + str(index)))
|
|
|
|
def get_mysql_conn(started_cluster):
|
|
errors = []
|
|
conn = None
|
|
for _ in range(5):
|
|
try:
|
|
if conn is None:
|
|
conn = pymysql.connect(user='root', password='clickhouse', host=started_cluster.mysql_ip, port=started_cluster.mysql_port)
|
|
else:
|
|
conn.ping(reconnect=True)
|
|
logging.debug(f"MySQL Connection establised: {started_cluster.mysql_ip}:{started_cluster.mysql_port}")
|
|
return conn
|
|
except Exception as e:
|
|
errors += [str(e)]
|
|
time.sleep(1)
|
|
|
|
raise Exception("Connection not establised, {}".format(errors))
|
|
|
|
def create_mysql_table(conn, table_name):
|
|
with conn.cursor() as cursor:
|
|
cursor.execute(create_table_mysql_template.format(table_name))
|