mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-24 00:22:29 +00:00
142 lines
4.0 KiB
Python
142 lines
4.0 KiB
Python
import itertools
|
|
import timeit
|
|
|
|
import pytest
|
|
|
|
from helpers.cluster import ClickHouseCluster
|
|
from helpers.network import PartitionManager
|
|
from helpers.test_tools import TSV
|
|
|
|
|
|
cluster = ClickHouseCluster(__file__)
|
|
|
|
NODES = {'node' + str(i): cluster.add_instance(
|
|
'node' + str(i),
|
|
main_configs=['configs/remote_servers.xml'],
|
|
user_configs=['configs/set_distributed_defaults.xml'],
|
|
) for i in (1, 2)}
|
|
|
|
CREATE_TABLES_SQL = '''
|
|
CREATE DATABASE test;
|
|
|
|
CREATE TABLE base_table(
|
|
node String
|
|
)
|
|
ENGINE = MergeTree
|
|
PARTITION BY node
|
|
ORDER BY node;
|
|
|
|
CREATE TABLE distributed_table
|
|
ENGINE = Distributed(test_cluster, default, base_table) AS base_table;
|
|
'''
|
|
|
|
INSERT_SQL_TEMPLATE = "INSERT INTO base_table VALUES ('{node_id}')"
|
|
|
|
SELECTS_SQL = {
|
|
'distributed': 'SELECT node FROM distributed_table ORDER BY node',
|
|
'remote': ("SELECT node FROM remote('node1,node2', default.base_table) "
|
|
"ORDER BY node"),
|
|
}
|
|
|
|
EXCEPTION_NETWORK = 'e.displayText() = DB::NetException: '
|
|
EXCEPTION_TIMEOUT = 'Timeout exceeded while reading from socket ('
|
|
EXCEPTION_CONNECT = 'Timeout: connect timed out: '
|
|
|
|
TIMEOUT_MEASUREMENT_EPS = 0.01
|
|
|
|
EXPECTED_BEHAVIOR = {
|
|
'default': {
|
|
'times': 3,
|
|
'timeout': 1,
|
|
},
|
|
'ready_to_wait': {
|
|
'times': 5,
|
|
'timeout': 3,
|
|
},
|
|
}
|
|
|
|
|
|
def _check_exception(exception, expected_tries=3):
|
|
lines = exception.split('\n')
|
|
|
|
assert len(lines) > 4, "Unexpected exception (expected: timeout info)"
|
|
|
|
assert lines[0].startswith('Received exception from server (version')
|
|
|
|
assert lines[1].startswith('Code: 279')
|
|
assert lines[1].endswith('All connection tries failed. Log: ')
|
|
|
|
assert lines[2] == '', "Unexpected exception text (expected: empty line)"
|
|
|
|
for i, line in enumerate(lines[3:3 + expected_tries]):
|
|
expected_lines = (
|
|
'Code: 209, ' + EXCEPTION_NETWORK + EXCEPTION_TIMEOUT,
|
|
'Code: 209, ' + EXCEPTION_NETWORK + EXCEPTION_CONNECT,
|
|
)
|
|
|
|
assert any(line.startswith(expected) for expected in expected_lines), \
|
|
'Unexpected exception at one of the connection attempts'
|
|
|
|
assert lines[3 + expected_tries] == '', 'Wrong number of connect attempts'
|
|
|
|
|
|
@pytest.fixture(scope="module")
|
|
def started_cluster():
|
|
try:
|
|
cluster.start()
|
|
|
|
for node_id, node in NODES.items():
|
|
node.query(CREATE_TABLES_SQL)
|
|
node.query(INSERT_SQL_TEMPLATE.format(node_id=node_id))
|
|
|
|
yield cluster
|
|
|
|
finally:
|
|
cluster.shutdown()
|
|
|
|
|
|
def _check_timeout_and_exception(node, user, query_base):
|
|
repeats = EXPECTED_BEHAVIOR[user]['times']
|
|
expected_timeout = EXPECTED_BEHAVIOR[user]['timeout'] * repeats
|
|
|
|
start = timeit.default_timer()
|
|
exception = node.query_and_get_error(SELECTS_SQL[query_base], user=user)
|
|
|
|
# And it should timeout no faster than:
|
|
measured_timeout = timeit.default_timer() - start
|
|
|
|
assert measured_timeout >= expected_timeout - TIMEOUT_MEASUREMENT_EPS
|
|
|
|
# And exception should reflect connection attempts:
|
|
_check_exception(exception, repeats)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
('first_user', 'node_name', 'query_base'),
|
|
tuple(itertools.product(EXPECTED_BEHAVIOR, NODES, SELECTS_SQL)),
|
|
)
|
|
def test_reconnect(started_cluster, node_name, first_user, query_base):
|
|
node = NODES[node_name]
|
|
|
|
# Everything is up, select should work:
|
|
assert TSV(node.query(SELECTS_SQL[query_base],
|
|
user=first_user)) == TSV('node1\nnode2')
|
|
|
|
with PartitionManager() as pm:
|
|
# Break the connection.
|
|
pm.partition_instances(*NODES.values())
|
|
|
|
# Now it shouldn't:
|
|
_check_timeout_and_exception(node, first_user, query_base)
|
|
|
|
# Other user should have different timeout and exception
|
|
_check_timeout_and_exception(
|
|
node,
|
|
'default' if first_user != 'default' else 'ready_to_wait',
|
|
query_base,
|
|
)
|
|
|
|
# select should work again:
|
|
assert TSV(node.query(SELECTS_SQL[query_base],
|
|
user=first_user)) == TSV('node1\nnode2')
|