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 cluster = None def check_all_hosts_sucesfully_executed(tsv_content, num_hosts): M = TSV.toMat(tsv_content) hosts = [(l[0], l[1]) for l in M] # (host, port) codes = [l[2] for l in M] messages = [l[3] for l in M] assert len(hosts) == num_hosts and len(set(hosts)) == num_hosts, "\n" + tsv_content assert len(set(codes)) == 1, "\n" + tsv_content assert codes[0] == "0", "\n" + tsv_content def ddl_check_query(instance, query, num_hosts=3): contents = instance.query(query) check_all_hosts_sucesfully_executed(contents, num_hosts) return contents @pytest.fixture(scope="module") def started_cluster(): global cluster try: clusters_schema = { "0" : { "0" : ["0", "1"], "1" : ["0"] }, "1" : { "0" : ["0", "1"], "1" : ["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", macroses={"cluster": cluster_name, "shard": shard_name, "replica": replica_name}, with_zookeeper=True) cluster.start() yield cluster finally: pass cluster.shutdown() class Task1: def __init__(self, cluster): self.cluster = cluster self.zk_task_path="/clickhouse-copier/task_simple" self.copier_task_config = open(os.path.join(CURRENT_TEST_DIR, 'task0_description.xml'), 'r').read() def start(self): instance = cluster.instances['s0_0_0'] for cluster_num in ["0", "1"]: ddl_check_query(instance, "DROP DATABASE IF EXISTS default ON CLUSTER cluster{}".format(cluster_num)) ddl_check_query(instance, "CREATE DATABASE IF NOT EXISTS default ON CLUSTER cluster{}".format(cluster_num)) ddl_check_query(instance, "CREATE TABLE hits ON CLUSTER cluster0 (d UInt64, d1 UInt64 MATERIALIZED d+1) ENGINE=ReplicatedMergeTree('/clickhouse/tables/cluster_{cluster}/{shard}/hits', '{replica}') PARTITION BY d % 3 ORDER BY d SETTINGS index_granularity = 16") ddl_check_query(instance, "CREATE TABLE hits_all ON CLUSTER cluster0 (d UInt64) ENGINE=Distributed(cluster0, default, hits, d)") ddl_check_query(instance, "CREATE TABLE hits_all ON CLUSTER cluster1 (d UInt64) ENGINE=Distributed(cluster1, default, hits, d + 1)") instance.query("INSERT INTO hits_all SELECT * FROM system.numbers LIMIT 1002", settings={"insert_distributed_sync": 1}) def check(self): assert TSV(self.cluster.instances['s0_0_0'].query("SELECT count() FROM hits_all")) == TSV("1002\n") assert TSV(self.cluster.instances['s1_0_0'].query("SELECT count() FROM hits_all")) == TSV("1002\n") assert TSV(self.cluster.instances['s1_0_0'].query("SELECT DISTINCT d % 2 FROM hits")) == TSV("1\n") assert TSV(self.cluster.instances['s1_1_0'].query("SELECT DISTINCT d % 2 FROM hits")) == TSV("0\n") instance = self.cluster.instances['s0_0_0'] ddl_check_query(instance, "DROP TABLE hits_all ON CLUSTER cluster0") ddl_check_query(instance, "DROP TABLE hits_all ON CLUSTER cluster1") ddl_check_query(instance, "DROP TABLE hits ON CLUSTER cluster0") ddl_check_query(instance, "DROP TABLE hits ON CLUSTER cluster1") class Task2: def __init__(self, cluster): self.cluster = cluster self.zk_task_path="/clickhouse-copier/task_month_to_week_partition" self.copier_task_config = open(os.path.join(CURRENT_TEST_DIR, 'task_month_to_week_description.xml'), 'r').read() def start(self): instance = cluster.instances['s0_0_0'] for cluster_num in ["0", "1"]: ddl_check_query(instance, "DROP DATABASE IF EXISTS default ON CLUSTER cluster{}".format(cluster_num)) ddl_check_query(instance, "CREATE DATABASE IF NOT EXISTS default ON CLUSTER cluster{}".format(cluster_num)) ddl_check_query(instance, "CREATE TABLE a ON CLUSTER cluster0 (date Date, d UInt64, d1 UInt64 ALIAS d+1) ENGINE=ReplicatedMergeTree('/clickhouse/tables/cluster_{cluster}/{shard}/a', '{replica}', date, intHash64(d), (date, intHash64(d)), 8192)") ddl_check_query(instance, "CREATE TABLE a_all ON CLUSTER cluster0 (date Date, d UInt64) ENGINE=Distributed(cluster0, default, a, d)") instance.query("INSERT INTO a_all SELECT toDate(17581 + number) AS date, number AS d FROM system.numbers LIMIT 85", settings={"insert_distributed_sync": 1}) def check(self): assert TSV(self.cluster.instances['s0_0_0'].query("SELECT count() FROM cluster(cluster0, default, a)")) == TSV("85\n") assert TSV(self.cluster.instances['s1_0_0'].query("SELECT count(), uniqExact(date) FROM cluster(cluster1, default, b)")) == TSV("85\t85\n") assert TSV(self.cluster.instances['s1_0_0'].query("SELECT DISTINCT jumpConsistentHash(intHash64(d), 2) FROM b")) == TSV("0\n") assert TSV(self.cluster.instances['s1_1_0'].query("SELECT DISTINCT jumpConsistentHash(intHash64(d), 2) FROM b")) == TSV("1\n") assert TSV(self.cluster.instances['s1_0_0'].query("SELECT uniqExact(partition) IN (12, 13) FROM system.parts WHERE active AND database='default' AND table='b'")) == TSV("1\n") assert TSV(self.cluster.instances['s1_1_0'].query("SELECT uniqExact(partition) IN (12, 13) FROM system.parts WHERE active AND database='default' AND table='b'")) == TSV("1\n") instance = cluster.instances['s0_0_0'] ddl_check_query(instance, "DROP TABLE a ON CLUSTER cluster0") ddl_check_query(instance, "DROP TABLE b ON CLUSTER cluster1") 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-preprocessed.xml', '--task-path', zk_task_path, '--base-dir', '/var/log/clickhouse-server/copier'] cmd += cmd_options 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_copy1_simple(started_cluster): execute_task(Task1(started_cluster), []) def test_copy1_with_recovering(started_cluster): execute_task(Task1(started_cluster), ['--copy-fault-probability', str(COPYING_FAIL_PROBABILITY)]) def test_copy_month_to_week_partition(started_cluster): execute_task(Task2(started_cluster), []) def test_copy_month_to_week_partition_with_recovering(started_cluster): execute_task(Task2(started_cluster), ['--copy-fault-probability', str(0.3)]) 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...")