ClickHouse/tests/integration/test_keeper_persistent_log/test.py

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2021-02-17 11:53:47 +00:00
#!/usr/bin/env python3
import pytest
from helpers.cluster import ClickHouseCluster
import random
import string
import os
import time
from kazoo.client import KazooClient, KazooState
cluster = ClickHouseCluster(__file__)
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node = cluster.add_instance('node', main_configs=['configs/enable_keeper.xml', 'configs/logs_conf.xml', 'configs/use_keeper.xml'], stay_alive=True)
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def random_string(length):
return ''.join(random.choices(string.ascii_lowercase + string.digits, k=length))
def create_random_path(prefix="", depth=1):
if depth == 0:
return prefix
return create_random_path(os.path.join(prefix, random_string(3)), depth - 1)
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
yield cluster
finally:
cluster.shutdown()
def get_connection_zk(nodename, timeout=30.0):
_fake_zk_instance = KazooClient(hosts=cluster.get_instance_ip(nodename) + ":9181", timeout=timeout)
def reset_listener(state):
nonlocal _fake_zk_instance
print("Fake zk callback called for state", state)
if state != KazooState.CONNECTED:
_fake_zk_instance._reset()
_fake_zk_instance.add_listener(reset_listener)
_fake_zk_instance.start()
return _fake_zk_instance
def test_state_after_restart(started_cluster):
try:
node_zk = None
node_zk2 = None
node_zk = get_connection_zk("node")
node_zk.create("/test_state_after_restart", b"somevalue")
strs = []
for i in range(100):
strs.append(random_string(123).encode())
node_zk.create("/test_state_after_restart/node" + str(i), strs[i])
for i in range(100):
if i % 7 == 0:
node_zk.delete("/test_state_after_restart/node" + str(i))
node.restart_clickhouse(kill=True)
node_zk2 = get_connection_zk("node")
assert node_zk2.get("/test_state_after_restart")[0] == b"somevalue"
for i in range(100):
if i % 7 == 0:
assert node_zk2.exists("/test_state_after_restart/node" + str(i)) is None
else:
assert len(node_zk2.get("/test_state_after_restart/node" + str(i))[0]) == 123
assert node_zk2.get("/test_state_after_restart/node" + str(i))[0] == strs[i]
finally:
try:
if node_zk is not None:
node_zk.stop()
node_zk.close()
if node_zk2 is not None:
node_zk2.stop()
node_zk2.close()
except:
pass
# http://zookeeper-user.578899.n2.nabble.com/Why-are-ephemeral-nodes-written-to-disk-tp7583403p7583418.html
def test_ephemeral_after_restart(started_cluster):
try:
node_zk = None
node_zk2 = None
node_zk = get_connection_zk("node")
node_zk.create("/test_ephemeral_after_restart", b"somevalue")
strs = []
for i in range(100):
strs.append(random_string(123).encode())
node_zk.create("/test_ephemeral_after_restart/node" + str(i), strs[i], ephemeral=True)
for i in range(100):
if i % 7 == 0:
node_zk.delete("/test_ephemeral_after_restart/node" + str(i))
node.restart_clickhouse(kill=True)
node_zk2 = get_connection_zk("node")
assert node_zk2.get("/test_ephemeral_after_restart")[0] == b"somevalue"
for i in range(100):
if i % 7 == 0:
assert node_zk2.exists("/test_ephemeral_after_restart/node" + str(i)) is None
else:
assert len(node_zk2.get("/test_ephemeral_after_restart/node" + str(i))[0]) == 123
assert node_zk2.get("/test_ephemeral_after_restart/node" + str(i))[0] == strs[i]
finally:
try:
if node_zk is not None:
node_zk.stop()
node_zk.close()
if node_zk2 is not None:
node_zk2.stop()
node_zk2.close()
except:
pass