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How to use enable_autocommit method in autotest

Best Python code snippet using autotest_python

consumer_test.py

Source:consumer_test.py

1# Licensed to the Apache Software Foundation (ASF) under one or more2# contributor license agreements.  See the NOTICE file distributed with3# this work for additional information regarding copyright ownership.4# The ASF licenses this file to You under the Apache License, Version 2.05# (the "License"); you may not use this file except in compliance with6# the License.  You may obtain a copy of the License at7#8#    http://www.apache.org/licenses/LICENSE-2.09#10# Unless required by applicable law or agreed to in writing, software11# distributed under the License is distributed on an "AS IS" BASIS,12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.13# See the License for the specific language governing permissions and14# limitations under the License.15from ducktape.mark import matrix16from ducktape.utils.util import wait_until17from kafkatest.tests.kafka_test import KafkaTest18from kafkatest.services.zookeeper import ZookeeperService19from kafkatest.services.kafka import KafkaService20from kafkatest.services.verifiable_producer import VerifiableProducer21from kafkatest.services.verifiable_consumer import VerifiableConsumer22from kafkatest.services.kafka import TopicPartition23import signal24def partitions_for(topic, num_partitions):25    partitions = set()26    for i in range(num_partitions):27        partitions.add(TopicPartition(topic=topic, partition=i))28    return partitions29class VerifiableConsumerTest(KafkaTest):30    STOPIC = "simple_topic"31    TOPIC = "test_topic"32    NUM_PARTITIONS = 333    PARTITIONS = partitions_for(TOPIC, NUM_PARTITIONS)34    GROUP_ID = "test_group_id"35    def __init__(self, test_context):36        super(VerifiableConsumerTest, self).__init__(test_context, num_zk=1, num_brokers=2, topics={37            self.TOPIC : { 'partitions': self.NUM_PARTITIONS, 'replication-factor': 1 },38            self.STOPIC : { 'partitions': 1, 'replication-factor': 2 }39        })40        self.num_producers = 141        self.num_consumers = 242        self.session_timeout = 1000043    def min_cluster_size(self):44        """Override this since we're adding services outside of the constructor"""45        return super(VerifiableConsumerTest, self).min_cluster_size() + self.num_consumers + self.num_producers46    def _partitions(self, assignment):47        partitions = []48        for parts in assignment.itervalues():49            partitions += parts50        return partitions51    def _valid_assignment(self, assignment):52        partitions = self._partitions(assignment)53        return len(partitions) == self.NUM_PARTITIONS and set(partitions) == self.PARTITIONS54    def _setup_consumer(self, topic, enable_autocommit=False):55        return VerifiableConsumer(self.test_context, self.num_consumers, self.kafka,56                                  topic, self.GROUP_ID, session_timeout=self.session_timeout,57                                  enable_autocommit=enable_autocommit)58    def _setup_producer(self, topic, max_messages=-1):59        return VerifiableProducer(self.test_context, self.num_producers, self.kafka, topic,60                                  max_messages=max_messages, throughput=500)61    def _await_all_members(self, consumer):62        # Wait until all members have joined the group63        wait_until(lambda: len(consumer.joined_nodes()) == self.num_consumers, timeout_sec=self.session_timeout+5,64                   err_msg="Consumers failed to join in a reasonable amount of time")65    def rolling_bounce_consumers(self, consumer, num_bounces=5, clean_shutdown=True):66        for _ in range(num_bounces):67            for node in consumer.nodes:68                consumer.stop_node(node, clean_shutdown)69                wait_until(lambda: len(consumer.dead_nodes()) == (self.num_consumers - 1), timeout_sec=self.session_timeout,70                           err_msg="Timed out waiting for the consumers to shutdown")71                total_consumed = consumer.total_consumed()72            73                consumer.start_node(node)74                wait_until(lambda: len(consumer.joined_nodes()) == self.num_consumers and consumer.total_consumed() > total_consumed,75                           timeout_sec=self.session_timeout,76                           err_msg="Timed out waiting for the consumers to shutdown")77    def bounce_all_consumers(self, consumer, num_bounces=5, clean_shutdown=True):78        for _ in range(num_bounces):79            for node in consumer.nodes:80                consumer.stop_node(node, clean_shutdown)81            wait_until(lambda: len(consumer.dead_nodes()) == self.num_consumers, timeout_sec=10,82                       err_msg="Timed out waiting for the consumers to shutdown")83            total_consumed = consumer.total_consumed()84            85            for node in consumer.nodes:86                consumer.start_node(node)87            wait_until(lambda: len(consumer.joined_nodes()) == self.num_consumers and consumer.total_consumed() > total_consumed,88                       timeout_sec=self.session_timeout*2,89                       err_msg="Timed out waiting for the consumers to shutdown")90    def rolling_bounce_brokers(self, consumer, num_bounces=5, clean_shutdown=True):91        for _ in range(num_bounces):92            for node in self.kafka.nodes:93                total_consumed = consumer.total_consumed()94                self.kafka.restart_node(node, clean_shutdown=True)95                wait_until(lambda: len(consumer.joined_nodes()) == self.num_consumers and consumer.total_consumed() > total_consumed,96                           timeout_sec=30,97                           err_msg="Timed out waiting for the broker to shutdown")98    def bounce_all_brokers(self, consumer, num_bounces=5, clean_shutdown=True):99        for _ in range(num_bounces):100            for node in self.kafka.nodes:101                self.kafka.stop_node(node)102            for node in self.kafka.nodes:103                self.kafka.start_node(node)104            105    def test_broker_rolling_bounce(self):106        """107        Verify correct consumer behavior when the brokers are consecutively restarted.108        Setup: single Kafka cluster with one producer writing messages to a single topic with one109        partition, an a set of consumers in the same group reading from the same topic.110        - Start a producer which continues producing new messages throughout the test.111        - Start up the consumers and wait until they've joined the group.112        - In a loop, restart each broker consecutively, waiting for the group to stabilize between113          each broker restart.114        - Verify delivery semantics according to the failure type and that the broker bounces115          did not cause unexpected group rebalances.116        """117        partition = TopicPartition(self.STOPIC, 0)118        119        producer = self._setup_producer(self.STOPIC)120        consumer = self._setup_consumer(self.STOPIC)121        producer.start()122        wait_until(lambda: producer.num_acked > 1000, timeout_sec=10,123                   err_msg="Producer failed waiting for messages to be written")124        consumer.start()125        self._await_all_members(consumer)126        num_rebalances = consumer.num_rebalances()127        # TODO: make this test work with hard shutdowns, which probably requires128        #       pausing before the node is restarted to ensure that any ephemeral129        #       nodes have time to expire130        self.rolling_bounce_brokers(consumer, clean_shutdown=True)131        132        unexpected_rebalances = consumer.num_rebalances() - num_rebalances133        assert unexpected_rebalances == 0, \134            "Broker rolling bounce caused %d unexpected group rebalances" % unexpected_rebalances135        consumer.stop_all()136        assert consumer.current_position(partition) == consumer.total_consumed(), \137            "Total consumed records did not match consumed position"138    @matrix(clean_shutdown=[True, False], bounce_mode=["all", "rolling"])139    def test_consumer_bounce(self, clean_shutdown, bounce_mode):140        """141        Verify correct consumer behavior when the consumers in the group are consecutively restarted.142        Setup: single Kafka cluster with one producer and a set of consumers in one group.143        - Start a producer which continues producing new messages throughout the test.144        - Start up the consumers and wait until they've joined the group.145        - In a loop, restart each consumer, waiting for each one to rejoin the group before146          restarting the rest.147        - Verify delivery semantics according to the failure type.148        """149        partition = TopicPartition(self.STOPIC, 0)150        151        producer = self._setup_producer(self.STOPIC)152        consumer = self._setup_consumer(self.STOPIC)153        producer.start()154        wait_until(lambda: producer.num_acked > 1000, timeout_sec=10,155                   err_msg="Producer failed waiting for messages to be written")156        consumer.start()157        self._await_all_members(consumer)158        if bounce_mode == "all":159            self.bounce_all_consumers(consumer, clean_shutdown=clean_shutdown)160        else:161            self.rolling_bounce_consumers(consumer, clean_shutdown=clean_shutdown)162                163        consumer.stop_all()164        if clean_shutdown:165            # if the total records consumed matches the current position, we haven't seen any duplicates166            # this can only be guaranteed with a clean shutdown167            assert consumer.current_position(partition) == consumer.total_consumed(), \168                "Total consumed records did not match consumed position"169        else:170            # we may have duplicates in a hard failure171            assert consumer.current_position(partition) <= consumer.total_consumed(), \172                "Current position greater than the total number of consumed records"173    @matrix(clean_shutdown=[True, False], enable_autocommit=[True, False])174    def test_consumer_failure(self, clean_shutdown, enable_autocommit):175        partition = TopicPartition(self.STOPIC, 0)176        177        consumer = self._setup_consumer(self.STOPIC, enable_autocommit=enable_autocommit)178        producer = self._setup_producer(self.STOPIC)179        consumer.start()180        self._await_all_members(consumer)181        partition_owner = consumer.owner(partition)182        assert partition_owner is not None183        # startup the producer and ensure that some records have been written184        producer.start()185        wait_until(lambda: producer.num_acked > 1000, timeout_sec=10,186                   err_msg="Producer failed waiting for messages to be written")187        # stop the partition owner and await its shutdown188        consumer.kill_node(partition_owner, clean_shutdown=clean_shutdown)189        wait_until(lambda: len(consumer.joined_nodes()) == (self.num_consumers - 1) and consumer.owner(partition) != None,190                   timeout_sec=self.session_timeout+5, err_msg="Timed out waiting for consumer to close")191        # ensure that the remaining consumer does some work after rebalancing192        current_total_consumed = consumer.total_consumed()193        wait_until(lambda: consumer.total_consumed() > current_total_consumed + 1000, timeout_sec=10,194                   err_msg="Timed out waiting for additional records to be consumed after first consumer failed")195        consumer.stop_all()196        if clean_shutdown:197            # if the total records consumed matches the current position, we haven't seen any duplicates198            # this can only be guaranteed with a clean shutdown199            assert consumer.current_position(partition) == consumer.total_consumed(), \200                "Total consumed records did not match consumed position"201        else:202            # we may have duplicates in a hard failure203            assert consumer.current_position(partition) <= consumer.total_consumed(), \204                "Current position greater than the total number of consumed records"205        # if autocommit is not turned on, we can also verify the last committed offset206        if not enable_autocommit:207            assert consumer.last_commit(partition) == consumer.current_position(partition), \208                "Last committed offset did not match last consumed position"209    @matrix(clean_shutdown=[True, False], enable_autocommit=[True, False])210    def test_broker_failure(self, clean_shutdown, enable_autocommit):211        partition = TopicPartition(self.STOPIC, 0)212        213        consumer = self._setup_consumer(self.STOPIC, enable_autocommit=enable_autocommit)214        producer = self._setup_producer(self.STOPIC)215        producer.start()216        consumer.start()217        self._await_all_members(consumer)218        num_rebalances = consumer.num_rebalances()219        # shutdown one of the brokers220        # TODO: we need a way to target the coordinator instead of picking arbitrarily221        self.kafka.signal_node(self.kafka.nodes[0], signal.SIGTERM if clean_shutdown else signal.SIGKILL)222        # ensure that the consumers do some work after the broker failure223        current_total_consumed = consumer.total_consumed()224        wait_until(lambda: consumer.total_consumed() > current_total_consumed + 1000, timeout_sec=20,225                   err_msg="Timed out waiting for additional records to be consumed after first consumer failed")226        # verify that there were no rebalances on failover227        assert num_rebalances == consumer.num_rebalances(), "Broker failure should not cause a rebalance"228        consumer.stop_all()229        # if the total records consumed matches the current position, we haven't seen any duplicates230        assert consumer.current_position(partition) == consumer.total_consumed(), \231            "Total consumed records did not match consumed position"232        # if autocommit is not turned on, we can also verify the last committed offset233        if not enable_autocommit:234            assert consumer.last_commit(partition) == consumer.current_position(partition), \235                "Last committed offset did not match last consumed position"236    def test_simple_consume(self):237        total_records = 1000238        consumer = self._setup_consumer(self.STOPIC)239        producer = self._setup_producer(self.STOPIC, max_messages=total_records)240        partition = TopicPartition(self.STOPIC, 0)241        consumer.start()242        self._await_all_members(consumer)243        producer.start()244        wait_until(lambda: producer.num_acked == total_records, timeout_sec=20,245                   err_msg="Producer failed waiting for messages to be written")246        wait_until(lambda: consumer.last_commit(partition) == total_records, timeout_sec=10,247                   err_msg="Consumer failed to read all expected messages")248        assert consumer.current_position(partition) == total_records249    def test_valid_assignment(self):250        consumer = self._setup_consumer(self.TOPIC)251        consumer.start()252        self._await_all_members(consumer)...

scheduler_lib_unittest.py

Source:scheduler_lib_unittest.py

1#!/usr/bin/python2#3# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.4# Use of this source code is governed by a BSD-style license that can be5# found in the LICENSE file.6import mock7import unittest8import common9from autotest_lib.database import database_connection10from autotest_lib.frontend import setup_django_environment11from autotest_lib.frontend.afe import readonly_connection12from autotest_lib.server import utils as server_utils13from autotest_lib.scheduler import scheduler_lib14from django.db import utils as django_utils15class ConnectionManagerTests(unittest.TestCase):16    """Connection manager unittests."""17    def setUp(self):18        self.connection_manager = None19        readonly_connection.set_globally_disabled = mock.MagicMock()20        setup_django_environment.enable_autocommit = mock.MagicMock()21        server_utils.Singleton._instances = {}22    def tearDown(self):23        readonly_connection.set_globally_disabled.reset_mock()24        setup_django_environment.enable_autocommit.reset_mock()25    def testConnectionDisconnect(self):26        """Test connection and disconnecting from the database."""27        # Test that the connection manager only opens a connection once.28        connection_manager = scheduler_lib.ConnectionManager()29        connection_manager.open_connection = mock.MagicMock()30        connection = connection_manager.get_connection()31        connection_manager.open_connection.assert_called_once_with()32        connection_manager.open_connection.reset_mock()33        connection = connection_manager.get_connection()34        self.assertTrue(35                connection_manager.open_connection.call_count == 0)36        connection_manager.open_connection.reset_mock()37        # Test that del on the connection manager closes the connection38        connection_manager.disconnect = mock.MagicMock()39        connection_manager.__del__()40        connection_manager.disconnect.assert_called_once_with()41    def testConnectionReconnect(self):42        """Test that retries don't destroy the connection."""43        database_connection._DjangoBackend.execute = mock.MagicMock()44        database_connection._DjangoBackend.execute.side_effect = (45                django_utils.DatabaseError('Database Error'))46        connection_manager = scheduler_lib.ConnectionManager()47        connection = connection_manager.get_connection()48        self.assertRaises(django_utils.DatabaseError,49                          connection.execute, *('', None, True))50        self.assertTrue(51                database_connection._DjangoBackend.execute.call_count == 2)52        database_connection._DjangoBackend.execute.reset_mock()53        self.assertTrue(connection_manager.db_connection ==54                        connection_manager.get_connection())55    def testConnectionManagerSingleton(self):56        """Test that the singleton works as expected."""57        # Confirm that instantiating the class applies global db settings.58        connection_manager = scheduler_lib.ConnectionManager()59        readonly_connection.set_globally_disabled.assert_called_once_with(True)60        setup_django_environment.enable_autocommit.assert_called_once_with()61        readonly_connection.set_globally_disabled.reset_mock()62        setup_django_environment.enable_autocommit.reset_mock()63        # Confirm that instantiating another connection manager doesn't change64        # the database settings, and in fact, returns the original manager.65        connection_manager_2 = scheduler_lib.ConnectionManager()66        self.assertTrue(connection_manager == connection_manager_2)67        self.assertTrue(68                readonly_connection.set_globally_disabled.call_count == 0)69        self.assertTrue(70                setup_django_environment.enable_autocommit.call_count == 0)71        # Confirm that we don't open the connection when the class is72        # instantiated.73        self.assertTrue(connection_manager.db_connection is None)74if __name__ == '__main__':...

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