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https://github.com/ClickHouse/ClickHouse.git
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437 lines
15 KiB
Python
437 lines
15 KiB
Python
import time
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import psycopg2
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from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
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postgres_table_template = """
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CREATE TABLE IF NOT EXISTS "{}" (
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key Integer NOT NULL, value Integer, PRIMARY KEY(key))
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"""
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postgres_table_template_2 = """
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CREATE TABLE IF NOT EXISTS "{}" (
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key Integer NOT NULL, value1 Integer, value2 Integer, value3 Integer, PRIMARY KEY(key))
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"""
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postgres_table_template_3 = """
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CREATE TABLE IF NOT EXISTS "{}" (
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key1 Integer NOT NULL, value1 Integer, key2 Integer NOT NULL, value2 Integer NOT NULL)
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"""
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postgres_table_template_4 = """
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CREATE TABLE IF NOT EXISTS "{}"."{}" (
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key Integer NOT NULL, value Integer, PRIMARY KEY(key))
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"""
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postgres_table_template_5 = """
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CREATE TABLE IF NOT EXISTS "{}" (
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key Integer NOT NULL, value UUID, PRIMARY KEY(key))
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"""
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postgres_table_template_6 = """
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CREATE TABLE IF NOT EXISTS "{}" (
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key Integer NOT NULL, value Text, PRIMARY KEY(key))
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"""
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def get_postgres_conn(
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ip,
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port,
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database=False,
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auto_commit=True,
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database_name="postgres_database",
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replication=False,
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):
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if database == True:
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conn_string = f"host={ip} port={port} dbname='{database_name}' user='postgres' password='mysecretpassword'"
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else:
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conn_string = (
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f"host={ip} port={port} user='postgres' password='mysecretpassword'"
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)
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if replication:
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conn_string += " replication='database'"
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conn = psycopg2.connect(conn_string)
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if auto_commit:
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conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
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conn.autocommit = True
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return conn
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def create_replication_slot(conn, slot_name="user_slot"):
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cursor = conn.cursor()
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cursor.execute(
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f"CREATE_REPLICATION_SLOT {slot_name} LOGICAL pgoutput EXPORT_SNAPSHOT"
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)
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result = cursor.fetchall()
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print(result[0][0]) # slot name
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print(result[0][1]) # start lsn
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print(result[0][2]) # snapshot
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return result[0][2]
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def drop_replication_slot(conn, slot_name="user_slot"):
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cursor = conn.cursor()
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cursor.execute(f"select pg_drop_replication_slot('{slot_name}')")
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def create_postgres_schema(cursor, schema_name):
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drop_postgres_schema(cursor, schema_name)
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cursor.execute(f"CREATE SCHEMA {schema_name}")
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def drop_postgres_schema(cursor, schema_name):
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cursor.execute(f"DROP SCHEMA IF EXISTS {schema_name} CASCADE")
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def create_postgres_table(
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cursor,
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table_name,
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replica_identity_full=False,
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template=postgres_table_template,
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):
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drop_postgres_table(cursor, table_name)
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query = template.format(table_name)
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print(f"Query: {query}")
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cursor.execute(query)
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if replica_identity_full:
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cursor.execute(f"""ALTER TABLE "{table_name}" REPLICA IDENTITY FULL;""")
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def drop_postgres_table(cursor, name, database_name=""):
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if database_name != "":
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cursor.execute(f"""DROP TABLE IF EXISTS "{database_name}"."{name}" """)
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else:
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cursor.execute(f"""DROP TABLE IF EXISTS "{name}" """)
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def create_postgres_table_with_schema(cursor, schema_name, table_name):
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drop_postgres_table_with_schema(cursor, schema_name, table_name)
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cursor.execute(postgres_table_template_4.format(schema_name, table_name))
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def drop_postgres_table_with_schema(cursor, schema_name, table_name):
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cursor.execute(f"""DROP TABLE IF EXISTS "{schema_name}"."{table_name}" """)
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class PostgresManager:
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def __init__(self):
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self.created_postgres_db_list = set()
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self.created_materialized_postgres_db_list = set()
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self.created_ch_postgres_db_list = set()
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def init(
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self,
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instance,
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ip,
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port,
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default_database="postgres_database",
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postgres_db_exists=False,
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):
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self.instance = instance
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self.ip = ip
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self.port = port
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self.default_database = default_database
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self.postgres_db_exists = postgres_db_exists
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self.prepare()
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def get_default_database(self):
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return self.default_database
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def restart(self):
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try:
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self.clear()
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self.prepare()
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except Exception as ex:
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self.prepare()
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raise ex
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def execute(self, query):
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return self.cursor.execute(query)
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def prepare(self):
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self.conn = get_postgres_conn(ip=self.ip, port=self.port)
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self.cursor = self.conn.cursor()
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if self.default_database != "":
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if not self.postgres_db_exists:
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self.create_postgres_db(self.default_database)
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self.conn = get_postgres_conn(
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ip=self.ip,
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port=self.port,
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database=True,
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database_name=self.default_database,
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)
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self.cursor = self.conn.cursor()
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self.create_clickhouse_postgres_db()
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def clear(self):
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if self.conn.closed == 0:
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self.conn.close()
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for db in self.created_materialized_postgres_db_list.copy():
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self.drop_materialized_db(db)
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for db in self.created_ch_postgres_db_list.copy():
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self.drop_clickhouse_postgres_db(db)
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if len(self.created_postgres_db_list) > 0:
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self.conn = get_postgres_conn(ip=self.ip, port=self.port)
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self.cursor = self.conn.cursor()
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for db in self.created_postgres_db_list.copy():
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self.drop_postgres_db(db)
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def get_db_cursor(self, database_name=""):
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if database_name == "":
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database_name = self.default_database
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self.conn = get_postgres_conn(
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ip=self.ip, port=self.port, database=True, database_name=database_name
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)
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return self.conn.cursor()
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def database_or_default(self, database_name):
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if database_name != "":
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return database_name
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if self.default_database != "":
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return self.default_database
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raise Exception("Database name is empty")
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def create_postgres_db(self, database_name=""):
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database_name = self.database_or_default(database_name)
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self.drop_postgres_db(database_name)
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self.created_postgres_db_list.add(database_name)
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self.cursor.execute(f'CREATE DATABASE "{database_name}"')
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def drop_postgres_db(self, database_name=""):
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database_name = self.database_or_default(database_name)
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self.cursor.execute(f'DROP DATABASE IF EXISTS "{database_name}" WITH (FORCE)')
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if database_name in self.created_postgres_db_list:
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self.created_postgres_db_list.remove(database_name)
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def create_clickhouse_postgres_db(
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self,
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database_name="",
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schema_name="",
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postgres_database="",
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):
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database_name = self.database_or_default(database_name)
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if postgres_database == "":
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postgres_database = database_name
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self.drop_clickhouse_postgres_db(database_name)
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self.created_ch_postgres_db_list.add(database_name)
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if len(schema_name) == 0:
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self.instance.query(
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f"""
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CREATE DATABASE \"{database_name}\"
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ENGINE = PostgreSQL('{self.ip}:{self.port}', '{postgres_database}', 'postgres', 'mysecretpassword')"""
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)
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else:
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self.instance.query(
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f"""
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CREATE DATABASE \"{database_name}\"
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ENGINE = PostgreSQL('{self.ip}:{self.port}', '{postgres_database}', 'postgres', 'mysecretpassword', '{schema_name}')"""
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)
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def drop_clickhouse_postgres_db(self, database_name=""):
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database_name = self.database_or_default(database_name)
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self.instance.query(f'DROP DATABASE IF EXISTS "{database_name}"')
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if database_name in self.created_ch_postgres_db_list:
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self.created_ch_postgres_db_list.remove(database_name)
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def create_materialized_db(
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self,
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ip,
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port,
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materialized_database="test_database",
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postgres_database="",
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settings=[],
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table_overrides="",
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user="postgres",
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password="mysecretpassword",
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):
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postgres_database = self.database_or_default(postgres_database)
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self.created_materialized_postgres_db_list.add(materialized_database)
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self.instance.query(f"DROP DATABASE IF EXISTS `{materialized_database}`")
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create_query = f"CREATE DATABASE `{materialized_database}` ENGINE = MaterializedPostgreSQL('{ip}:{port}', '{postgres_database}', '{user}', '{password}')"
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if len(settings) > 0:
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create_query += " SETTINGS "
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for i in range(len(settings)):
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if i != 0:
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create_query += ", "
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create_query += settings[i]
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create_query += table_overrides
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self.instance.query(create_query)
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assert materialized_database in self.instance.query("SHOW DATABASES")
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def drop_materialized_db(self, materialized_database="test_database"):
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self.instance.query(f"DROP DATABASE IF EXISTS `{materialized_database}` SYNC")
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if materialized_database in self.created_materialized_postgres_db_list:
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self.created_materialized_postgres_db_list.remove(materialized_database)
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def create_postgres_schema(self, name):
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create_postgres_schema(self.cursor, name)
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def create_postgres_table(
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self, table_name, database_name="", template=postgres_table_template
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):
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database_name = self.database_or_default(database_name)
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cursor = self.cursor
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if database_name != self.get_default_database:
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try:
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self.create_postgres_db(database_name)
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except:
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# postgres does not support create database if not exists
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pass
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conn = get_postgres_conn(
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ip=self.ip,
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port=self.port,
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database=True,
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database_name=database_name,
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)
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cursor = conn.cursor()
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create_postgres_table(cursor, table_name, template=template)
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def create_and_fill_postgres_table(self, table_name, database_name=""):
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database_name = self.database_or_default(database_name)
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self.create_postgres_table(table_name, database_name)
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self.instance.query(
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f"INSERT INTO `{database_name}`.`{table_name}` SELECT number, number from numbers(50)"
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)
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def create_and_fill_postgres_tables(
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self,
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tables_num,
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numbers=50,
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database_name="",
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table_name_base="postgresql_replica",
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):
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for i in range(tables_num):
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table_name = f"{table_name_base}_{i}"
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self.create_postgres_table(table_name, database_name)
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if numbers > 0:
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db = self.database_or_default(database_name)
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self.instance.query(
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f"INSERT INTO `{db}`.{table_name} SELECT number, number from numbers({numbers})"
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)
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queries = [
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"INSERT INTO postgresql_replica_{} select i, i from generate_series(0, 10000) as t(i);",
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"DELETE FROM postgresql_replica_{} WHERE (value*value) % 3 = 0;",
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"UPDATE postgresql_replica_{} SET value = value - 125 WHERE key % 2 = 0;",
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"UPDATE postgresql_replica_{} SET key=key+20000 WHERE key%2=0",
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"INSERT INTO postgresql_replica_{} select i, i from generate_series(40000, 50000) as t(i);",
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"DELETE FROM postgresql_replica_{} WHERE key % 10 = 0;",
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"UPDATE postgresql_replica_{} SET value = value + 101 WHERE key % 2 = 1;",
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"UPDATE postgresql_replica_{} SET key=key+80000 WHERE key%2=1",
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"DELETE FROM postgresql_replica_{} WHERE value % 2 = 0;",
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"UPDATE postgresql_replica_{} SET value = value + 2000 WHERE key % 5 = 0;",
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"INSERT INTO postgresql_replica_{} select i, i from generate_series(200000, 250000) as t(i);",
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"DELETE FROM postgresql_replica_{} WHERE value % 3 = 0;",
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"UPDATE postgresql_replica_{} SET value = value * 2 WHERE key % 3 = 0;",
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"UPDATE postgresql_replica_{} SET key=key+500000 WHERE key%2=1",
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"INSERT INTO postgresql_replica_{} select i, i from generate_series(1000000, 1050000) as t(i);",
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"DELETE FROM postgresql_replica_{} WHERE value % 9 = 2;",
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"UPDATE postgresql_replica_{} SET key=key+10000000",
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"UPDATE postgresql_replica_{} SET value = value + 2 WHERE key % 3 = 1;",
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"DELETE FROM postgresql_replica_{} WHERE value%5 = 0;",
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]
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def assert_nested_table_is_created(
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instance, table_name, materialized_database="test_database", schema_name=""
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):
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if len(schema_name) == 0:
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table = table_name
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else:
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table = schema_name + "." + table_name
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print(f"Checking table {table} exists in {materialized_database}")
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# Check based on `system.tables` is not enough, because tables appear there before they are loaded.
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# It may lead to error `Unknown table expression identifier...`
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while True:
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try:
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instance.query(
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f"SELECT * FROM `{materialized_database}`.`{table}` LIMIT 1 FORMAT Null"
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)
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break
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except Exception:
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time.sleep(0.2)
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continue
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database_tables = instance.query(
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f"SHOW TABLES FROM `{materialized_database}` WHERE name = '{table}'"
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)
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assert table in database_tables
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def assert_number_of_columns(
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instance, expected, table_name, database_name="test_database"
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):
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result = instance.query(
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f"select count() from system.columns where table = '{table_name}' and database = '{database_name}' and not startsWith(name, '_')"
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)
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while int(result) != expected:
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time.sleep(1)
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result = instance.query(
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f"select count() from system.columns where table = '{table_name}' and database = '{database_name}' and not startsWith(name, '_')"
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)
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print("Number of columns ok")
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def check_tables_are_synchronized(
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instance,
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table_name,
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order_by="key",
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postgres_database="postgres_database",
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materialized_database="test_database",
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schema_name="",
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columns=["*"],
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):
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assert_nested_table_is_created(
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instance, table_name, materialized_database, schema_name
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)
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table_path = ""
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if len(schema_name) == 0:
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table_path = f"`{materialized_database}`.`{table_name}`"
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else:
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table_path = f"`{materialized_database}`.`{schema_name}.{table_name}`"
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print(f"Checking table is synchronized: {table_path}")
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result_query = f"select * from {table_path} order by {order_by};"
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expected = instance.query(
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f"select {','.join(columns)} from `{postgres_database}`.`{table_name}` order by {order_by};"
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)
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result = instance.query(result_query)
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for _ in range(50):
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if result == expected:
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break
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else:
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time.sleep(1)
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result = instance.query(result_query)
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if result != expected:
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count = int(instance.query(f"select count() from {table_path}"))
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expected_count = int(
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instance.query(f"select count() from `{postgres_database}`.`{table_name}`")
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)
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print(f"Having {count}, expected {expected_count}")
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assert result == expected
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def check_several_tables_are_synchronized(
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instance,
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tables_num,
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order_by="key",
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postgres_database="postgres_database",
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materialized_database="test_database",
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schema_name="",
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):
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for i in range(tables_num):
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check_tables_are_synchronized(
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instance,
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f"postgresql_replica_{i}",
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postgres_database=postgres_database,
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materialized_database=materialized_database,
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)
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