mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-13 09:52:38 +00:00
223 lines
6.3 KiB
Python
223 lines
6.3 KiB
Python
#!/usr/bin/env python3
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import os
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import random
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import string
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import time
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from multiprocessing.dummy import Pool
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import pytest
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from kazoo.client import KazooClient, KazooRetry
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from kazoo.handlers.threading import KazooTimeoutError
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import helpers.keeper_utils as keeper_utils
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance(
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"node1", main_configs=["configs/keeper_config1.xml"], stay_alive=True
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)
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node2 = cluster.add_instance(
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"node2", main_configs=["configs/keeper_config2.xml"], stay_alive=True
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)
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node3 = cluster.add_instance(
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"node3", main_configs=["configs/keeper_config3.xml"], stay_alive=True
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)
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def start_zookeeper(node):
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node.exec_in_container(["bash", "-c", "/opt/zookeeper/bin/zkServer.sh start"])
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def stop_zookeeper(node):
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node.exec_in_container(["bash", "-c", "/opt/zookeeper/bin/zkServer.sh stop"])
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timeout = time.time() + 60
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while node.get_process_pid("zookeeper") != None:
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if time.time() > timeout:
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raise Exception("Failed to stop ZooKeeper in 60 secs")
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time.sleep(0.2)
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def generate_zk_snapshot(node):
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for _ in range(100):
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stop_zookeeper(node)
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start_zookeeper(node)
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time.sleep(2)
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stop_zookeeper(node)
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# get last snapshot
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last_snapshot = node.exec_in_container(
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[
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"bash",
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"-c",
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"find /zookeeper/version-2 -name 'snapshot.*' -printf '%T@ %p\n' | sort -n | awk 'END {print $2}'",
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]
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).strip()
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print(f"Latest snapshot: {last_snapshot}")
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try:
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# verify last snapshot
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# zkSnapShotToolkit is a tool to inspect generated snapshots - if it's broken, an exception is thrown
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node.exec_in_container(
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[
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"bash",
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"-c",
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f"/opt/zookeeper/bin/zkSnapShotToolkit.sh {last_snapshot}",
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]
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)
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return
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except Exception as err:
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print(f"Got error while reading snapshot: {err}")
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raise Exception("Failed to generate a ZooKeeper snapshot")
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def clear_zookeeper(node):
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node.exec_in_container(["bash", "-c", "rm -fr /zookeeper/*"])
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def restart_and_clear_zookeeper(node):
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stop_zookeeper(node)
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clear_zookeeper(node)
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start_zookeeper(node)
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def restart_zookeeper(node):
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stop_zookeeper(node)
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start_zookeeper(node)
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def clear_clickhouse_data(node):
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node.exec_in_container(
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[
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"bash",
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"-c",
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"rm -fr /var/lib/clickhouse/coordination/logs/* /var/lib/clickhouse/coordination/snapshots/*",
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]
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)
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def convert_zookeeper_data(node):
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node.exec_in_container(
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[
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"bash",
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"-c",
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"tar -cvzf /var/lib/clickhouse/zk-data.tar.gz /zookeeper/version-2",
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]
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)
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cmd = "/usr/bin/clickhouse keeper-converter --zookeeper-logs-dir /zookeeper/version-2/ --zookeeper-snapshots-dir /zookeeper/version-2/ --output-dir /var/lib/clickhouse/coordination/snapshots"
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node.exec_in_container(["bash", "-c", cmd])
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return os.path.join(
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"/var/lib/clickhouse/coordination/snapshots",
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node.exec_in_container(
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["bash", "-c", "ls /var/lib/clickhouse/coordination/snapshots"]
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).strip(),
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)
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def stop_clickhouse(node):
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node.stop_clickhouse()
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def start_clickhouse(node):
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node.start_clickhouse()
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keeper_utils.wait_until_connected(cluster, node)
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def get_fake_zk(node, timeout=30.0):
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_fake_zk_instance = KazooClient(
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hosts=cluster.get_instance_ip(node.name) + ":9181", timeout=timeout
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)
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_fake_zk_instance.start()
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return _fake_zk_instance
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def get_genuine_zk(node, timeout=30.0):
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CONNECTION_RETRIES = 100
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for i in range(CONNECTION_RETRIES):
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try:
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_genuine_zk_instance = KazooClient(
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hosts=cluster.get_instance_ip(node.name) + ":2181",
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timeout=timeout,
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connection_retry=KazooRetry(max_tries=20),
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)
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_genuine_zk_instance.start()
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return _genuine_zk_instance
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except KazooTimeoutError:
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if i == CONNECTION_RETRIES - 1:
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raise
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print(
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"Failed to connect to ZK cluster because of timeout. Restarting cluster and trying again."
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)
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time.sleep(0.2)
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restart_zookeeper(node)
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def test_snapshot_and_load(started_cluster):
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genuine_connection = None
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fake_zks = []
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try:
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restart_and_clear_zookeeper(node1)
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genuine_connection = get_genuine_zk(node1)
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for node in [node1, node2, node3]:
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print("Stop and clear", node.name, "with dockerid", node.docker_id)
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stop_clickhouse(node)
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clear_clickhouse_data(node)
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for i in range(1000):
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genuine_connection.create("/test" + str(i), b"data")
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print("Data loaded to zookeeper")
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generate_zk_snapshot(node1)
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print("Data copied to node1")
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resulted_path = convert_zookeeper_data(node1)
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print("Resulted path", resulted_path)
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for node in [node2, node3]:
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print("Copy snapshot from", node1.name, "to", node.name)
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cluster.copy_file_from_container_to_container(
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node1, resulted_path, node, "/var/lib/clickhouse/coordination/snapshots"
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)
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print("Starting clickhouses")
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p = Pool(3)
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result = p.map_async(start_clickhouse, [node1, node2, node3])
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result.wait()
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print("Loading additional data")
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fake_zks = [get_fake_zk(node) for node in [node1, node2, node3]]
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for i in range(1000):
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fake_zk = random.choice(fake_zks)
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try:
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fake_zk.create("/test" + str(i + 1000), b"data")
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except Exception as ex:
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print("Got exception:" + str(ex))
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print("Final")
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fake_zks[0].create("/test10000", b"data")
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finally:
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for zk in fake_zks:
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if zk:
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zk.stop()
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zk.close()
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if genuine_connection:
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genuine_connection.stop()
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genuine_connection.close()
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