import os import os.path as p import sys import time import datetime import pytest from contextlib import contextmanager import docker from kazoo.client import KazooClient CURRENT_TEST_DIR = os.path.dirname(os.path.abspath(__file__)) sys.path.insert(0, os.path.dirname(CURRENT_TEST_DIR)) from helpers.cluster import ClickHouseCluster from helpers.test_tools import TSV COPYING_FAIL_PROBABILITY = 0.33 MOVING_FAIL_PROBABILITY = 0.1 cluster = None @pytest.fixture(scope="module") def started_cluster(): global cluster try: clusters_schema = { "0" : {"0" : ["0"]}, "1" : {"0" : ["0"]} } cluster = ClickHouseCluster(__file__) for cluster_name, shards in clusters_schema.iteritems(): for shard_name, replicas in shards.iteritems(): for replica_name in replicas: name = "s{}_{}_{}".format(cluster_name, shard_name, replica_name) cluster.add_instance(name, config_dir="configs", macros={"cluster": cluster_name, "shard": shard_name, "replica": replica_name}, with_zookeeper=True) cluster.start() yield cluster finally: pass cluster.shutdown() class TaskTrivial: def __init__(self, cluster): self.cluster = cluster self.zk_task_path="/clickhouse-copier/task_trivial" self.copier_task_config = open(os.path.join(CURRENT_TEST_DIR, 'task_trivial.xml'), 'r').read() def start(self): source = cluster.instances['s0_0_0'] destination = cluster.instances['s1_0_0'] for node in [source, destination]: node.query("DROP DATABASE IF EXISTS default") node.query("CREATE DATABASE IF NOT EXISTS default") source.query("CREATE TABLE trivial (d UInt64, d1 UInt64 MATERIALIZED d+1) " "ENGINE=ReplicatedMergeTree('/clickhouse/tables/source_trivial_cluster/1/trivial', '1') " "PARTITION BY d % 5 ORDER BY d SETTINGS index_granularity = 16") source.query("INSERT INTO trivial SELECT * FROM system.numbers LIMIT 1002", settings={"insert_distributed_sync": 1}) def check(self): source = cluster.instances['s0_0_0'] destination = cluster.instances['s1_0_0'] assert TSV(source.query("SELECT count() FROM trivial")) == TSV("1002\n") assert TSV(destination.query("SELECT count() FROM trivial")) == TSV("1002\n") for node in [source, destination]: node.query("DROP TABLE trivial") def execute_task(task, cmd_options): task.start() zk = cluster.get_kazoo_client('zoo1') print "Use ZooKeeper server: {}:{}".format(zk.hosts[0][0], zk.hosts[0][1]) zk_task_path = task.zk_task_path zk.ensure_path(zk_task_path) zk.create(zk_task_path + "/description", task.copier_task_config) # Run cluster-copier processes on each node docker_api = docker.from_env().api copiers_exec_ids = [] cmd = ['/usr/bin/clickhouse', 'copier', '--config', '/etc/clickhouse-server/config-copier.xml', '--task-path', zk_task_path, '--base-dir', '/var/log/clickhouse-server/copier'] cmd += cmd_options print(cmd) for instance_name, instance in cluster.instances.iteritems(): container = instance.get_docker_handle() exec_id = docker_api.exec_create(container.id, cmd, stderr=True) docker_api.exec_start(exec_id, detach=True) copiers_exec_ids.append(exec_id) print "Copier for {} ({}) has started".format(instance.name, instance.ip_address) # Wait for copiers stopping and check their return codes for exec_id, instance in zip(copiers_exec_ids, cluster.instances.itervalues()): while True: res = docker_api.exec_inspect(exec_id) if not res['Running']: break time.sleep(1) assert res['ExitCode'] == 0, "Instance: {} ({}). Info: {}".format(instance.name, instance.ip_address, repr(res)) try: task.check() finally: zk.delete(zk_task_path, recursive=True) # Tests def test_trivial_copy(started_cluster): execute_task(TaskTrivial(started_cluster), []) def test_trivial_copy_with_copy_fault(started_cluster): execute_task(TaskTrivial(started_cluster), ['--copy-fault-probability', str(COPYING_FAIL_PROBABILITY)]) def test_trivial_copy_with_move_fault(started_cluster): execute_task(TaskTrivial(started_cluster), ['--move-fault-probability', str(MOVING_FAIL_PROBABILITY)]) if __name__ == '__main__': with contextmanager(started_cluster)() as cluster: for name, instance in cluster.instances.items(): print name, instance.ip_address raw_input("Cluster created, press any key to destroy...")