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ClickHouse/tests/integration/test_storage_postgresql/test.py

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Python
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import time
import pytest
import psycopg2
from multiprocessing.dummy import Pool
from helpers.cluster import ClickHouseCluster
from helpers.test_tools import assert_eq_with_retry
from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
cluster = ClickHouseCluster(__file__)
node1 = cluster.add_instance('node1', main_configs=["configs/log_conf.xml"], with_postgres=True)
node2 = cluster.add_instance('node2', main_configs=['configs/log_conf.xml'], with_postgres_cluster=True)
def get_postgres_conn(cluster, ip, database=False):
if database == True:
conn_string = f"host={ip} port='{cluster.postgres_port}' dbname='clickhouse' user='postgres' password='mysecretpassword'"
else:
conn_string = f"host={ip} port='{cluster.postgres_port}' user='postgres' password='mysecretpassword'"
conn = psycopg2.connect(conn_string)
conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
conn.autocommit = True
return conn
def create_postgres_db(conn, name):
cursor = conn.cursor()
cursor.execute("DROP DATABASE IF EXISTS {}".format(name))
cursor.execute("CREATE DATABASE {}".format(name))
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
postgres_conn = get_postgres_conn(cluster, ip=cluster.postgres_ip)
print("postgres connected")
create_postgres_db(postgres_conn, 'clickhouse')
postgres_conn = get_postgres_conn(cluster, ip=cluster.postgres2_ip)
print("postgres2 connected")
create_postgres_db(postgres_conn, 'clickhouse')
postgres_conn = get_postgres_conn(cluster, ip=cluster.postgres3_ip)
print("postgres2 connected")
create_postgres_db(postgres_conn, 'clickhouse')
postgres_conn = get_postgres_conn(cluster, ip=cluster.postgres4_ip)
print("postgres2 connected")
create_postgres_db(postgres_conn, 'clickhouse')
print("postgres connected")
yield cluster
finally:
cluster.shutdown()
def test_postgres_select_insert(started_cluster):
conn = get_postgres_conn(started_cluster, started_cluster.postgres_ip, True)
cursor = conn.cursor()
table_name = 'test_many'
table = f'''postgresql('{started_cluster.postgres_ip}:{started_cluster.postgres_port}', 'clickhouse', '{table_name}', 'postgres', 'mysecretpassword')'''
cursor.execute('CREATE TABLE IF NOT EXISTS {} (a integer, b text, c integer)'.format(table_name))
result = node1.query('''
INSERT INTO TABLE FUNCTION {}
SELECT number, concat('name_', toString(number)), 3 from numbers(10000)'''.format(table))
check1 = "SELECT count() FROM {}".format(table)
check2 = "SELECT Sum(c) FROM {}".format(table)
check3 = "SELECT count(c) FROM {} WHERE a % 2 == 0".format(table)
check4 = "SELECT count() FROM {} WHERE b LIKE concat('name_', toString(1))".format(table)
assert (node1.query(check1)).rstrip() == '10000'
assert (node1.query(check2)).rstrip() == '30000'
assert (node1.query(check3)).rstrip() == '5000'
assert (node1.query(check4)).rstrip() == '1'
def test_postgres_conversions(started_cluster):
conn = get_postgres_conn(started_cluster, started_cluster.postgres_ip, True)
cursor = conn.cursor()
cursor.execute(
'''CREATE TABLE IF NOT EXISTS test_types (
a smallint, b integer, c bigint, d real, e double precision, f serial, g bigserial,
h timestamp, i date, j decimal(5, 3), k numeric, l boolean)''')
node1.query('''
INSERT INTO TABLE FUNCTION postgresql('postgres1:5432', 'clickhouse', 'test_types', 'postgres', 'mysecretpassword') VALUES
(-32768, -2147483648, -9223372036854775808, 1.12345, 1.1234567890, 2147483647, 9223372036854775807, '2000-05-12 12:12:12', '2000-05-12', 22.222, 22.222, 1)''')
result = node1.query('''
SELECT a, b, c, d, e, f, g, h, i, j, toDecimal128(k, 3), l FROM postgresql('postgres1:5432', 'clickhouse', 'test_types', 'postgres', 'mysecretpassword')''')
assert(result == '-32768\t-2147483648\t-9223372036854775808\t1.12345\t1.123456789\t2147483647\t9223372036854775807\t2000-05-12 12:12:12\t2000-05-12\t22.222\t22.222\t1\n')
cursor.execute("INSERT INTO test_types (l) VALUES (TRUE), (true), ('yes'), ('y'), ('1');")
cursor.execute("INSERT INTO test_types (l) VALUES (FALSE), (false), ('no'), ('off'), ('0');")
expected = "1\n1\n1\n1\n1\n1\n0\n0\n0\n0\n0\n"
result = node1.query('''SELECT l FROM postgresql('postgres1:5432', 'clickhouse', 'test_types', 'postgres', 'mysecretpassword')''')
assert(result == expected)
cursor.execute(
'''CREATE TABLE IF NOT EXISTS test_array_dimensions
(
a Date[] NOT NULL, -- Date
b Timestamp[] NOT NULL, -- DateTime
c real[][] NOT NULL, -- Float32
d double precision[][] NOT NULL, -- Float64
e decimal(5, 5)[][][] NOT NULL, -- Decimal32
f integer[][][] NOT NULL, -- Int32
g Text[][][][][] NOT NULL, -- String
h Integer[][][], -- Nullable(Int32)
i Char(2)[][][][], -- Nullable(String)
k Char(2)[] -- Nullable(String)
)''')
result = node1.query('''
DESCRIBE TABLE postgresql('postgres1:5432', 'clickhouse', 'test_array_dimensions', 'postgres', 'mysecretpassword')''')
expected = ('a\tArray(Date)\t\t\t\t\t\n' +
'b\tArray(DateTime)\t\t\t\t\t\n' +
'c\tArray(Array(Float32))\t\t\t\t\t\n' +
'd\tArray(Array(Float64))\t\t\t\t\t\n' +
'e\tArray(Array(Array(Decimal(5, 5))))\t\t\t\t\t\n' +
'f\tArray(Array(Array(Int32)))\t\t\t\t\t\n' +
'g\tArray(Array(Array(Array(Array(String)))))\t\t\t\t\t\n' +
'h\tArray(Array(Array(Nullable(Int32))))\t\t\t\t\t\n' +
'i\tArray(Array(Array(Array(Nullable(String)))))\t\t\t\t\t\n' +
'k\tArray(Nullable(String))'
)
assert(result.rstrip() == expected)
node1.query("INSERT INTO TABLE FUNCTION postgresql('postgres1:5432', 'clickhouse', 'test_array_dimensions', 'postgres', 'mysecretpassword') "
"VALUES ("
"['2000-05-12', '2000-05-12'], "
"['2000-05-12 12:12:12', '2000-05-12 12:12:12'], "
"[[1.12345], [1.12345], [1.12345]], "
"[[1.1234567891], [1.1234567891], [1.1234567891]], "
"[[[0.11111, 0.11111]], [[0.22222, 0.22222]], [[0.33333, 0.33333]]], "
"[[[1, 1], [1, 1]], [[3, 3], [3, 3]], [[4, 4], [5, 5]]], "
"[[[[['winx', 'winx', 'winx']]]]], "
"[[[1, NULL], [NULL, 1]], [[NULL, NULL], [NULL, NULL]], [[4, 4], [5, 5]]], "
"[[[[NULL]]]], "
"[]"
")")
result = node1.query('''
SELECT * FROM postgresql('postgres1:5432', 'clickhouse', 'test_array_dimensions', 'postgres', 'mysecretpassword')''')
expected = (
"['2000-05-12','2000-05-12']\t" +
"['2000-05-12 12:12:12','2000-05-12 12:12:12']\t" +
"[[1.12345],[1.12345],[1.12345]]\t" +
"[[1.1234567891],[1.1234567891],[1.1234567891]]\t" +
"[[[0.11111,0.11111]],[[0.22222,0.22222]],[[0.33333,0.33333]]]\t"
"[[[1,1],[1,1]],[[3,3],[3,3]],[[4,4],[5,5]]]\t"
"[[[[['winx','winx','winx']]]]]\t"
"[[[1,NULL],[NULL,1]],[[NULL,NULL],[NULL,NULL]],[[4,4],[5,5]]]\t"
"[[[[NULL]]]]\t"
"[]\n"
)
assert(result == expected)
def test_non_default_scema(started_cluster):
conn = get_postgres_conn(started_cluster, started_cluster.postgres_ip, True)
cursor = conn.cursor()
cursor.execute('CREATE SCHEMA test_schema')
cursor.execute('CREATE TABLE test_schema.test_table (a integer)')
cursor.execute('INSERT INTO test_schema.test_table SELECT i FROM generate_series(0, 99) as t(i)')
node1.query('''
CREATE TABLE test_pg_table_schema (a UInt32)
ENGINE PostgreSQL('postgres1:5432', 'clickhouse', 'test_table', 'postgres', 'mysecretpassword', 'test_schema');
''')
result = node1.query('SELECT * FROM test_pg_table_schema')
expected = node1.query('SELECT number FROM numbers(100)')
assert(result == expected)
table_function = '''postgresql('postgres1:5432', 'clickhouse', 'test_table', 'postgres', 'mysecretpassword', 'test_schema')'''
result = node1.query('SELECT * FROM {}'.format(table_function))
assert(result == expected)
cursor.execute('''CREATE SCHEMA "test.nice.schema"''')
cursor.execute('''CREATE TABLE "test.nice.schema"."test.nice.table" (a integer)''')
cursor.execute('INSERT INTO "test.nice.schema"."test.nice.table" SELECT i FROM generate_series(0, 99) as t(i)')
node1.query('''
CREATE TABLE test_pg_table_schema_with_dots (a UInt32)
ENGINE PostgreSQL('postgres1:5432', 'clickhouse', 'test.nice.table', 'postgres', 'mysecretpassword', 'test.nice.schema');
''')
result = node1.query('SELECT * FROM test_pg_table_schema_with_dots')
assert(result == expected)
def test_concurrent_queries(started_cluster):
conn = get_postgres_conn(started_cluster, started_cluster.postgres_ip, True)
cursor = conn.cursor()
node1.query('''
CREATE TABLE test_table (key UInt32, value UInt32)
ENGINE = PostgreSQL('postgres1:5432', 'clickhouse', 'test_table', 'postgres', 'mysecretpassword')''')
cursor.execute('CREATE TABLE test_table (key integer, value integer)')
prev_count = node1.count_in_log('New connection to postgres1:5432')
def node_select(_):
for i in range(20):
result = node1.query("SELECT * FROM test_table", user='default')
busy_pool = Pool(20)
p = busy_pool.map_async(node_select, range(20))
p.wait()
count = node1.count_in_log('New connection to postgres1:5432')
print(count, prev_count)
# 16 is default size for connection pool
assert(int(count) <= int(prev_count) + 16)
def node_insert(_):
for i in range(5):
result = node1.query("INSERT INTO test_table SELECT number, number FROM numbers(1000)", user='default')
busy_pool = Pool(5)
p = busy_pool.map_async(node_insert, range(5))
p.wait()
result = node1.query("SELECT count() FROM test_table", user='default')
print(result)
assert(int(result) == 5 * 5 * 1000)
def node_insert_select(_):
for i in range(5):
result = node1.query("INSERT INTO test_table SELECT number, number FROM numbers(1000)", user='default')
result = node1.query("SELECT * FROM test_table LIMIT 100", user='default')
busy_pool = Pool(5)
p = busy_pool.map_async(node_insert_select, range(5))
p.wait()
result = node1.query("SELECT count() FROM test_table", user='default')
print(result)
assert(int(result) == 5 * 5 * 1000 * 2)
node1.query('DROP TABLE test_table;')
cursor.execute('DROP TABLE test_table;')
count = node1.count_in_log('New connection to postgres1:5432')
print(count, prev_count)
assert(int(count) <= int(prev_count) + 16)
def test_postgres_distributed(started_cluster):
conn0 = get_postgres_conn(started_cluster, started_cluster.postgres_ip, database=True)
conn1 = get_postgres_conn(started_cluster, started_cluster.postgres2_ip, database=True)
conn2 = get_postgres_conn(started_cluster, started_cluster.postgres3_ip, database=True)
conn3 = get_postgres_conn(started_cluster, started_cluster.postgres4_ip, database=True)
cursor0 = conn0.cursor()
cursor1 = conn1.cursor()
cursor2 = conn2.cursor()
cursor3 = conn3.cursor()
cursors = [cursor0, cursor1, cursor2, cursor3]
for i in range(4):
cursors[i].execute('CREATE TABLE test_replicas (id Integer, name Text)')
cursors[i].execute("""INSERT INTO test_replicas select i, 'host{}' from generate_series(0, 99) as t(i);""".format(i + 1));
# test multiple ports parsing
result = node2.query('''SELECT DISTINCT(name) FROM postgresql(`postgres{1|2|3}:5432`, 'clickhouse', 'test_replicas', 'postgres', 'mysecretpassword'); ''')
assert(result == 'host1\n' or result == 'host2\n' or result == 'host3\n')
result = node2.query('''SELECT DISTINCT(name) FROM postgresql(`postgres2:5431|postgres3:5432`, 'clickhouse', 'test_replicas', 'postgres', 'mysecretpassword'); ''')
assert(result == 'host3\n' or result == 'host2\n')
# Create storage with with 3 replicas
node2.query('''
CREATE TABLE test_replicas
(id UInt32, name String)
ENGINE = PostgreSQL(`postgres{2|3|4}:5432`, 'clickhouse', 'test_replicas', 'postgres', 'mysecretpassword'); ''')
# Check all replicas are traversed
query = "SELECT name FROM ("
for i in range (3):
query += "SELECT name FROM test_replicas UNION DISTINCT "
query += "SELECT name FROM test_replicas) ORDER BY name"
result = node2.query(query)
assert(result == 'host2\nhost3\nhost4\n')
# Create storage with with two two shards, each has 2 replicas
node2.query('''
CREATE TABLE test_shards
(id UInt32, name String, age UInt32, money UInt32)
ENGINE = ExternalDistributed('PostgreSQL', `postgres{1|2}:5432,postgres{3|4}:5432`, 'clickhouse', 'test_replicas', 'postgres', 'mysecretpassword'); ''')
# Check only one replica in each shard is used
result = node2.query("SELECT DISTINCT(name) FROM test_shards ORDER BY name")
assert(result == 'host1\nhost3\n')
# Check all replicas are traversed
query = "SELECT name FROM ("
for i in range (3):
query += "SELECT name FROM test_shards UNION DISTINCT "
query += "SELECT name FROM test_shards) ORDER BY name"
result = node2.query(query)
assert(result == 'host1\nhost2\nhost3\nhost4\n')
# Disconnect postgres1
started_cluster.pause_container('postgres1')
result = node2.query("SELECT DISTINCT(name) FROM test_shards ORDER BY name")
started_cluster.unpause_container('postgres1')
assert(result == 'host2\nhost4\n' or result == 'host3\nhost4\n')
if __name__ == '__main__':
cluster.start()
input("Cluster created, press any key to destroy...")
cluster.shutdown()
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