/
DistributedHerderTest.java
4512 lines (3726 loc) · 196 KB
/
DistributedHerderTest.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.connect.runtime.distributed;
import org.apache.kafka.clients.CommonClientConfigs;
import org.apache.kafka.common.KafkaException;
import org.apache.kafka.common.KafkaFuture;
import org.apache.kafka.common.config.ConfigException;
import org.apache.kafka.common.config.ConfigValue;
import org.apache.kafka.common.errors.AuthorizationException;
import org.apache.kafka.common.utils.MockTime;
import org.apache.kafka.connect.errors.AlreadyExistsException;
import org.apache.kafka.connect.errors.ConnectException;
import org.apache.kafka.connect.errors.NotFoundException;
import org.apache.kafka.connect.runtime.ConnectMetrics.MetricGroup;
import org.apache.kafka.connect.runtime.ConnectorConfig;
import org.apache.kafka.connect.runtime.ConnectorStatus;
import org.apache.kafka.connect.runtime.Herder;
import org.apache.kafka.connect.runtime.MockConnectMetrics;
import org.apache.kafka.connect.runtime.RestartPlan;
import org.apache.kafka.connect.runtime.RestartRequest;
import org.apache.kafka.connect.runtime.SessionKey;
import org.apache.kafka.connect.runtime.SinkConnectorConfig;
import org.apache.kafka.connect.runtime.SourceConnectorConfig;
import org.apache.kafka.connect.runtime.TargetState;
import org.apache.kafka.connect.runtime.TaskConfig;
import org.apache.kafka.connect.runtime.TopicStatus;
import org.apache.kafka.connect.runtime.Worker;
import org.apache.kafka.connect.runtime.WorkerConfig;
import org.apache.kafka.connect.runtime.WorkerConfigTransformer;
import org.apache.kafka.connect.runtime.distributed.DistributedHerder.HerderMetrics;
import org.apache.kafka.connect.runtime.isolation.Plugins;
import org.apache.kafka.connect.runtime.rest.InternalRequestSignature;
import org.apache.kafka.connect.runtime.rest.RestClient;
import org.apache.kafka.connect.runtime.rest.entities.ConfigInfos;
import org.apache.kafka.connect.runtime.rest.entities.ConnectorInfo;
import org.apache.kafka.connect.runtime.rest.entities.ConnectorOffset;
import org.apache.kafka.connect.runtime.rest.entities.ConnectorOffsets;
import org.apache.kafka.connect.runtime.rest.entities.ConnectorStateInfo;
import org.apache.kafka.connect.runtime.rest.entities.ConnectorType;
import org.apache.kafka.connect.runtime.rest.entities.TaskInfo;
import org.apache.kafka.connect.runtime.rest.errors.BadRequestException;
import org.apache.kafka.connect.runtime.rest.errors.ConnectRestException;
import org.apache.kafka.connect.sink.SinkConnector;
import org.apache.kafka.connect.source.ConnectorTransactionBoundaries;
import org.apache.kafka.connect.source.ExactlyOnceSupport;
import org.apache.kafka.connect.source.SourceConnector;
import org.apache.kafka.connect.source.SourceTask;
import org.apache.kafka.connect.storage.ClusterConfigState;
import org.apache.kafka.connect.storage.ConfigBackingStore;
import org.apache.kafka.connect.storage.StatusBackingStore;
import org.apache.kafka.connect.util.Callback;
import org.apache.kafka.connect.util.ConnectorTaskId;
import org.apache.kafka.connect.util.FutureCallback;
import org.easymock.Capture;
import org.easymock.CaptureType;
import org.easymock.EasyMock;
import org.easymock.IAnswer;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.easymock.PowerMock;
import org.powermock.api.easymock.annotation.Mock;
import org.powermock.core.classloader.annotations.PowerMockIgnore;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.reflect.Whitebox;
import javax.crypto.SecretKey;
import javax.ws.rs.core.HttpHeaders;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.AbstractExecutorService;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import static java.util.Collections.singletonList;
import static javax.ws.rs.core.Response.Status.FORBIDDEN;
import static javax.ws.rs.core.Response.Status.SERVICE_UNAVAILABLE;
import static org.apache.kafka.connect.runtime.AbstractStatus.State.FAILED;
import static org.apache.kafka.connect.runtime.SourceConnectorConfig.ExactlyOnceSupportLevel.REQUIRED;
import static org.apache.kafka.connect.runtime.distributed.ConnectProtocol.CONNECT_PROTOCOL_V0;
import static org.apache.kafka.connect.runtime.distributed.DistributedConfig.EXACTLY_ONCE_SOURCE_SUPPORT_CONFIG;
import static org.apache.kafka.connect.runtime.distributed.DistributedConfig.INTER_WORKER_KEY_GENERATION_ALGORITHM_DEFAULT;
import static org.apache.kafka.connect.runtime.distributed.IncrementalCooperativeConnectProtocol.CONNECT_PROTOCOL_V1;
import static org.apache.kafka.connect.runtime.distributed.IncrementalCooperativeConnectProtocol.CONNECT_PROTOCOL_V2;
import static org.apache.kafka.connect.source.SourceTask.TransactionBoundary.CONNECTOR;
import static org.easymock.EasyMock.anyLong;
import static org.easymock.EasyMock.anyObject;
import static org.easymock.EasyMock.capture;
import static org.easymock.EasyMock.leq;
import static org.easymock.EasyMock.newCapture;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
@RunWith(PowerMockRunner.class)
@PrepareForTest({DistributedHerder.class})
@PowerMockIgnore({"javax.management.*", "javax.crypto.*"})
public class DistributedHerderTest {
private static final Map<String, String> HERDER_CONFIG = new HashMap<>();
static {
HERDER_CONFIG.put(DistributedConfig.STATUS_STORAGE_TOPIC_CONFIG, "status-topic");
HERDER_CONFIG.put(DistributedConfig.CONFIG_TOPIC_CONFIG, "config-topic");
HERDER_CONFIG.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
HERDER_CONFIG.put(DistributedConfig.GROUP_ID_CONFIG, "connect-test-group");
// The WorkerConfig base class has some required settings without defaults
HERDER_CONFIG.put(WorkerConfig.KEY_CONVERTER_CLASS_CONFIG, "org.apache.kafka.connect.json.JsonConverter");
HERDER_CONFIG.put(WorkerConfig.VALUE_CONVERTER_CLASS_CONFIG, "org.apache.kafka.connect.json.JsonConverter");
HERDER_CONFIG.put(DistributedConfig.OFFSET_STORAGE_TOPIC_CONFIG, "connect-offsets");
}
private static final String MEMBER_URL = "memberUrl";
private static final String CONN1 = "sourceA";
private static final String CONN2 = "sourceB";
private static final ConnectorTaskId TASK0 = new ConnectorTaskId(CONN1, 0);
private static final ConnectorTaskId TASK1 = new ConnectorTaskId(CONN1, 1);
private static final ConnectorTaskId TASK2 = new ConnectorTaskId(CONN1, 2);
private static final Integer MAX_TASKS = 3;
private static final Map<String, String> CONN1_CONFIG = new HashMap<>();
private static final String FOO_TOPIC = "foo";
private static final String BAR_TOPIC = "bar";
private static final String BAZ_TOPIC = "baz";
static {
CONN1_CONFIG.put(ConnectorConfig.NAME_CONFIG, CONN1);
CONN1_CONFIG.put(ConnectorConfig.TASKS_MAX_CONFIG, MAX_TASKS.toString());
CONN1_CONFIG.put(SinkConnectorConfig.TOPICS_CONFIG, String.join(",", FOO_TOPIC, BAR_TOPIC));
CONN1_CONFIG.put(ConnectorConfig.CONNECTOR_CLASS_CONFIG, BogusSourceConnector.class.getName());
}
private static final Map<String, String> CONN1_CONFIG_UPDATED = new HashMap<>(CONN1_CONFIG);
static {
CONN1_CONFIG_UPDATED.put(SinkConnectorConfig.TOPICS_CONFIG, String.join(",", FOO_TOPIC, BAR_TOPIC, BAZ_TOPIC));
}
private static final ConfigInfos CONN1_CONFIG_INFOS =
new ConfigInfos(CONN1, 0, Collections.emptyList(), Collections.emptyList());
private static final Map<String, String> CONN2_CONFIG = new HashMap<>();
static {
CONN2_CONFIG.put(ConnectorConfig.NAME_CONFIG, CONN2);
CONN2_CONFIG.put(ConnectorConfig.TASKS_MAX_CONFIG, MAX_TASKS.toString());
CONN2_CONFIG.put(SinkConnectorConfig.TOPICS_CONFIG, String.join(",", FOO_TOPIC, BAR_TOPIC));
CONN2_CONFIG.put(ConnectorConfig.CONNECTOR_CLASS_CONFIG, BogusSourceConnector.class.getName());
}
private static final ConfigInfos CONN2_CONFIG_INFOS =
new ConfigInfos(CONN2, 0, Collections.emptyList(), Collections.emptyList());
private static final ConfigInfos CONN2_INVALID_CONFIG_INFOS =
new ConfigInfos(CONN2, 1, Collections.emptyList(), Collections.emptyList());
private static final Map<String, String> TASK_CONFIG = new HashMap<>();
static {
TASK_CONFIG.put(TaskConfig.TASK_CLASS_CONFIG, BogusSourceTask.class.getName());
}
private static final List<Map<String, String>> TASK_CONFIGS = new ArrayList<>();
static {
TASK_CONFIGS.add(TASK_CONFIG);
TASK_CONFIGS.add(TASK_CONFIG);
TASK_CONFIGS.add(TASK_CONFIG);
}
private static final HashMap<ConnectorTaskId, Map<String, String>> TASK_CONFIGS_MAP = new HashMap<>();
static {
TASK_CONFIGS_MAP.put(TASK0, TASK_CONFIG);
TASK_CONFIGS_MAP.put(TASK1, TASK_CONFIG);
TASK_CONFIGS_MAP.put(TASK2, TASK_CONFIG);
}
private static final ClusterConfigState SNAPSHOT = new ClusterConfigState(
1,
null,
Collections.singletonMap(CONN1, 3),
Collections.singletonMap(CONN1, CONN1_CONFIG),
Collections.singletonMap(CONN1, TargetState.STARTED),
TASK_CONFIGS_MAP,
Collections.emptyMap(),
Collections.emptyMap(),
Collections.emptySet(),
Collections.emptySet());
private static final ClusterConfigState SNAPSHOT_PAUSED_CONN1 = new ClusterConfigState(
1,
null,
Collections.singletonMap(CONN1, 3),
Collections.singletonMap(CONN1, CONN1_CONFIG),
Collections.singletonMap(CONN1, TargetState.PAUSED),
TASK_CONFIGS_MAP,
Collections.emptyMap(),
Collections.emptyMap(),
Collections.emptySet(),
Collections.emptySet());
private static final ClusterConfigState SNAPSHOT_STOPPED_CONN1 = new ClusterConfigState(
1,
null,
Collections.singletonMap(CONN1, 3),
Collections.singletonMap(CONN1, CONN1_CONFIG),
Collections.singletonMap(CONN1, TargetState.STOPPED),
Collections.emptyMap(), // Stopped connectors should have an empty set of task configs
Collections.emptyMap(),
Collections.emptyMap(),
Collections.emptySet(),
Collections.emptySet());
private static final ClusterConfigState SNAPSHOT_UPDATED_CONN1_CONFIG = new ClusterConfigState(
1,
null,
Collections.singletonMap(CONN1, 3),
Collections.singletonMap(CONN1, CONN1_CONFIG_UPDATED),
Collections.singletonMap(CONN1, TargetState.STARTED),
TASK_CONFIGS_MAP,
Collections.emptyMap(),
Collections.emptyMap(),
Collections.emptySet(),
Collections.emptySet());
private static final String WORKER_ID = "localhost:8083";
private static final String KAFKA_CLUSTER_ID = "I4ZmrWqfT2e-upky_4fdPA";
private static final Runnable EMPTY_RUNNABLE = () -> {
};
@Mock private ConfigBackingStore configBackingStore;
@Mock private StatusBackingStore statusBackingStore;
@Mock private WorkerGroupMember member;
private MockTime time;
private DistributedHerder herder;
private MockConnectMetrics metrics;
@Mock private Worker worker;
@Mock private Callback<Herder.Created<ConnectorInfo>> putConnectorCallback;
@Mock private Plugins plugins;
@Mock private RestClient restClient;
private final CountDownLatch shutdownCalled = new CountDownLatch(1);
private ConfigBackingStore.UpdateListener configUpdateListener;
private WorkerRebalanceListener rebalanceListener;
private ExecutorService herderExecutor;
private Future<?> herderFuture;
private SinkConnectorConfig conn1SinkConfig;
private SinkConnectorConfig conn1SinkConfigUpdated;
private short connectProtocolVersion;
private final SampleConnectorClientConfigOverridePolicy
noneConnectorClientConfigOverridePolicy = new SampleConnectorClientConfigOverridePolicy();
@Before
public void setUp() throws Exception {
time = new MockTime();
metrics = new MockConnectMetrics(time);
worker = PowerMock.createMock(Worker.class);
EasyMock.expect(worker.isSinkConnector(CONN1)).andStubReturn(Boolean.TRUE);
AutoCloseable uponShutdown = () -> shutdownCalled.countDown();
// Default to the old protocol unless specified otherwise
connectProtocolVersion = CONNECT_PROTOCOL_V0;
herder = PowerMock.createPartialMock(DistributedHerder.class,
new String[]{"connectorType", "updateDeletedConnectorStatus", "updateDeletedTaskStatus", "validateConnectorConfig", "buildRestartPlan", "recordRestarting"},
new DistributedConfig(HERDER_CONFIG), worker, WORKER_ID, KAFKA_CLUSTER_ID,
statusBackingStore, configBackingStore, member, MEMBER_URL, restClient, metrics, time, noneConnectorClientConfigOverridePolicy,
Collections.emptyList(), null, new AutoCloseable[]{uponShutdown});
configUpdateListener = herder.new ConfigUpdateListener();
rebalanceListener = herder.new RebalanceListener(time);
plugins = PowerMock.createMock(Plugins.class);
conn1SinkConfig = new SinkConnectorConfig(plugins, CONN1_CONFIG);
conn1SinkConfigUpdated = new SinkConnectorConfig(plugins, CONN1_CONFIG_UPDATED);
EasyMock.expect(herder.connectorType(EasyMock.anyObject())).andReturn(ConnectorType.SOURCE).anyTimes();
PowerMock.expectPrivate(herder, "updateDeletedConnectorStatus").andVoid().anyTimes();
PowerMock.expectPrivate(herder, "updateDeletedTaskStatus").andVoid().anyTimes();
}
@After
public void tearDown() {
if (metrics != null) metrics.stop();
if (herderExecutor != null) {
herderExecutor.shutdownNow();
herderExecutor = null;
}
}
@Test
public void testJoinAssignment() throws Exception {
// Join group and get assignment
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Arrays.asList(CONN1), Arrays.asList(TASK1));
expectConfigRefreshAndSnapshot(SNAPSHOT);
Capture<Callback<TargetState>> onStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onStart));
PowerMock.expectLastCall().andAnswer(() -> {
onStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.tick();
time.sleep(1000L);
assertStatistics(3, 1, 100, 1000L);
PowerMock.verifyAll();
}
@Test
public void testRebalance() throws Exception {
// Join group and get assignment
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Arrays.asList(CONN1), Arrays.asList(TASK1));
expectConfigRefreshAndSnapshot(SNAPSHOT);
Capture<Callback<TargetState>> onFirstStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onFirstStart));
PowerMock.expectLastCall().andAnswer(() -> {
onFirstStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
expectRebalance(Arrays.asList(CONN1), Arrays.asList(TASK1), ConnectProtocol.Assignment.NO_ERROR,
1, Arrays.asList(CONN1), Arrays.asList());
// and the new assignment started
Capture<Callback<TargetState>> onSecondStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onSecondStart));
PowerMock.expectLastCall().andAnswer(() -> {
onSecondStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
time.sleep(1000L);
assertStatistics(0, 0, 0, Double.POSITIVE_INFINITY);
herder.tick();
time.sleep(2000L);
assertStatistics(3, 1, 100, 2000);
herder.tick();
time.sleep(3000L);
assertStatistics(3, 2, 100, 3000);
PowerMock.verifyAll();
}
@Test
public void testIncrementalCooperativeRebalanceForNewMember() throws Exception {
connectProtocolVersion = CONNECT_PROTOCOL_V1;
// Join group. First rebalance contains revocations from other members. For the new
// member the assignment should be empty
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V1);
expectRebalance(1, Collections.emptyList(), Collections.emptyList());
expectConfigRefreshAndSnapshot(SNAPSHOT);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// The new member got its assignment
expectRebalance(Collections.emptyList(), Collections.emptyList(),
ConnectProtocol.Assignment.NO_ERROR,
1, Arrays.asList(CONN1), Arrays.asList(TASK1), 0);
// and the new assignment started
Capture<Callback<TargetState>> onStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onStart));
PowerMock.expectLastCall().andAnswer(() -> {
onStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
time.sleep(1000L);
assertStatistics(0, 0, 0, Double.POSITIVE_INFINITY);
herder.tick();
time.sleep(2000L);
assertStatistics(3, 1, 100, 2000);
herder.tick();
time.sleep(3000L);
assertStatistics(3, 2, 100, 3000);
PowerMock.verifyAll();
}
@Test
public void testIncrementalCooperativeRebalanceForExistingMember() {
connectProtocolVersion = CONNECT_PROTOCOL_V1;
// Join group. First rebalance contains revocations because a new member joined.
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V1);
expectRebalance(Arrays.asList(CONN1), Arrays.asList(TASK1),
ConnectProtocol.Assignment.NO_ERROR, 1,
Collections.emptyList(), Collections.emptyList(), 0);
member.requestRejoin();
PowerMock.expectLastCall();
// In the second rebalance the new member gets its assignment and this member has no
// assignments or revocations
expectRebalance(1, Collections.emptyList(), Collections.emptyList());
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.configState = SNAPSHOT;
time.sleep(1000L);
assertStatistics(0, 0, 0, Double.POSITIVE_INFINITY);
herder.tick();
time.sleep(2000L);
assertStatistics(3, 1, 100, 2000);
herder.tick();
time.sleep(3000L);
assertStatistics(3, 2, 100, 3000);
PowerMock.verifyAll();
}
@Test
public void testIncrementalCooperativeRebalanceWithDelay() throws Exception {
connectProtocolVersion = CONNECT_PROTOCOL_V1;
// Join group. First rebalance contains some assignments but also a delay, because a
// member was detected missing
int rebalanceDelay = 10_000;
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V1);
expectRebalance(Collections.emptyList(), Collections.emptyList(),
ConnectProtocol.Assignment.NO_ERROR, 1,
Collections.emptyList(), Arrays.asList(TASK2),
rebalanceDelay);
expectConfigRefreshAndSnapshot(SNAPSHOT);
worker.startSourceTask(EasyMock.eq(TASK2), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall().andAnswer(() -> {
time.sleep(9900L);
return null;
});
// Request to re-join because the scheduled rebalance delay has been reached
member.requestRejoin();
PowerMock.expectLastCall();
// The member got its assignment and revocation
expectRebalance(Collections.emptyList(), Collections.emptyList(),
ConnectProtocol.Assignment.NO_ERROR,
1, Arrays.asList(CONN1), Arrays.asList(TASK1), 0);
// and the new assignment started
Capture<Callback<TargetState>> onStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onStart));
PowerMock.expectLastCall().andAnswer(() -> {
onStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
time.sleep(1000L);
assertStatistics(0, 0, 0, Double.POSITIVE_INFINITY);
herder.tick();
herder.tick();
time.sleep(2000L);
assertStatistics(3, 2, 100, 2000);
PowerMock.verifyAll();
}
@Test
public void testRebalanceFailedConnector() throws Exception {
// Join group and get assignment
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Arrays.asList(CONN1), Arrays.asList(TASK1));
expectConfigRefreshAndSnapshot(SNAPSHOT);
Capture<Callback<TargetState>> onFirstStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onFirstStart));
PowerMock.expectLastCall().andAnswer(() -> {
onFirstStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
expectRebalance(Arrays.asList(CONN1), Arrays.asList(TASK1), ConnectProtocol.Assignment.NO_ERROR,
1, Arrays.asList(CONN1), Arrays.asList());
// and the new assignment started
Capture<Callback<TargetState>> onSecondStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onSecondStart));
PowerMock.expectLastCall().andAnswer(() -> {
onSecondStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(false, null, null);
// worker is not running, so we should see no call to connectorTaskConfigs()
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.tick();
time.sleep(1000L);
assertStatistics(3, 1, 100, 1000L);
herder.tick();
time.sleep(2000L);
assertStatistics(3, 2, 100, 2000L);
PowerMock.verifyAll();
}
@Test
public void testRevoke() throws TimeoutException {
revokeAndReassign(false);
}
@Test
public void testIncompleteRebalanceBeforeRevoke() throws TimeoutException {
revokeAndReassign(true);
}
public void revokeAndReassign(boolean incompleteRebalance) throws TimeoutException {
connectProtocolVersion = CONNECT_PROTOCOL_V1;
int configOffset = 1;
// Join group and get initial assignment
EasyMock.expect(member.memberId()).andStubReturn("member");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(connectProtocolVersion);
// The lists need to be mutable because assignments might be removed
expectRebalance(configOffset, new ArrayList<>(singletonList(CONN1)), new ArrayList<>(singletonList(TASK1)));
expectConfigRefreshAndSnapshot(SNAPSHOT);
Capture<Callback<TargetState>> onFirstStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onFirstStart));
PowerMock.expectLastCall().andAnswer(() -> {
onFirstStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
worker.startSourceTask(EasyMock.eq(TASK1), EasyMock.anyObject(), EasyMock.anyObject(), EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED));
PowerMock.expectLastCall().andReturn(true);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// worker is stable with an existing set of tasks
if (incompleteRebalance) {
// Perform a partial re-balance just prior to the revocation
// bump the configOffset to trigger reading the config topic to the end
configOffset++;
expectRebalance(configOffset, Arrays.asList(), Arrays.asList());
// give it the wrong snapshot, as if we're out of sync/can't reach the broker
expectConfigRefreshAndSnapshot(SNAPSHOT);
member.requestRejoin();
PowerMock.expectLastCall();
// tick exits early because we failed, and doesn't do the poll at the end of the method
// the worker did not startWork or reset the rebalanceResolved flag
}
// Revoke the connector in the next rebalance
expectRebalance(Arrays.asList(CONN1), Arrays.asList(),
ConnectProtocol.Assignment.NO_ERROR, configOffset, Arrays.asList(),
Arrays.asList());
if (incompleteRebalance) {
// Same as SNAPSHOT, except with an updated offset
// Allow the task to read to the end of the topic and complete the rebalance
ClusterConfigState secondSnapshot = new ClusterConfigState(
configOffset,
null,
Collections.singletonMap(CONN1, 3),
Collections.singletonMap(CONN1, CONN1_CONFIG),
Collections.singletonMap(CONN1, TargetState.STARTED),
TASK_CONFIGS_MAP,
Collections.emptyMap(),
Collections.emptyMap(),
Collections.emptySet(),
Collections.emptySet()
);
expectConfigRefreshAndSnapshot(secondSnapshot);
}
member.requestRejoin();
PowerMock.expectLastCall();
// re-assign the connector back to the same worker to ensure state was cleaned up
expectRebalance(configOffset, Arrays.asList(CONN1), Arrays.asList());
Capture<Callback<TargetState>> onSecondStart = newCapture();
worker.startConnector(EasyMock.eq(CONN1), EasyMock.anyObject(),
EasyMock.anyObject(),
EasyMock.eq(herder), EasyMock.eq(TargetState.STARTED), capture(onSecondStart));
PowerMock.expectLastCall().andAnswer(() -> {
onSecondStart.getValue().onCompletion(null, TargetState.STARTED);
return true;
});
member.wakeup();
PowerMock.expectLastCall();
expectExecuteTaskReconfiguration(true, conn1SinkConfig, () -> TASK_CONFIGS);
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.tick();
if (incompleteRebalance) {
herder.tick();
}
herder.tick();
herder.tick();
PowerMock.verifyAll();
}
@Test
public void testHaltCleansUpWorker() {
worker.stopAndAwaitConnectors();
PowerMock.expectLastCall();
worker.stopAndAwaitTasks();
PowerMock.expectLastCall();
member.stop();
PowerMock.expectLastCall();
configBackingStore.stop();
PowerMock.expectLastCall();
statusBackingStore.stop();
PowerMock.expectLastCall();
worker.stop();
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.halt();
PowerMock.verifyAll();
}
@Test
public void testCreateConnector() throws Exception {
EasyMock.expect(member.memberId()).andStubReturn("leader");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Collections.emptyList(), Collections.emptyList(), true);
expectConfigRefreshAndSnapshot(SNAPSHOT);
member.wakeup();
PowerMock.expectLastCall();
// mock the actual validation since its asynchronous nature is difficult to test and should
// be covered sufficiently by the unit tests for the AbstractHerder class
Capture<Callback<ConfigInfos>> validateCallback = newCapture();
herder.validateConnectorConfig(EasyMock.eq(CONN2_CONFIG), capture(validateCallback));
PowerMock.expectLastCall().andAnswer(() -> {
validateCallback.getValue().onCompletion(null, CONN2_CONFIG_INFOS);
return null;
});
// CONN2 is new, should succeed
configBackingStore.putConnectorConfig(CONN2, CONN2_CONFIG);
PowerMock.expectLastCall();
ConnectorInfo info = new ConnectorInfo(CONN2, CONN2_CONFIG, Collections.emptyList(),
ConnectorType.SOURCE);
putConnectorCallback.onCompletion(null, new Herder.Created<>(true, info));
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// These will occur just before/during the second tick
member.wakeup();
PowerMock.expectLastCall();
member.ensureActive();
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// No immediate action besides this -- change will be picked up via the config log
PowerMock.replayAll();
herder.putConnectorConfig(CONN2, CONN2_CONFIG, false, putConnectorCallback);
// First tick runs the initial herder request, which issues an asynchronous request for
// connector validation
herder.tick();
// Once that validation is complete, another request is added to the herder request queue
// for actually performing the config write; this tick is for that request
herder.tick();
time.sleep(1000L);
assertStatistics(3, 1, 100, 1000L);
PowerMock.verifyAll();
}
@Test
public void testCreateConnectorConfigBackingStoreError() {
EasyMock.expect(member.memberId()).andStubReturn("leader");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Collections.emptyList(), Collections.emptyList(), true);
expectConfigRefreshAndSnapshot(SNAPSHOT);
member.wakeup();
PowerMock.expectLastCall();
// mock the actual validation since its asynchronous nature is difficult to test and should
// be covered sufficiently by the unit tests for the AbstractHerder class
Capture<Callback<ConfigInfos>> validateCallback = newCapture();
herder.validateConnectorConfig(EasyMock.eq(CONN2_CONFIG), capture(validateCallback));
PowerMock.expectLastCall().andAnswer(() -> {
validateCallback.getValue().onCompletion(null, CONN2_CONFIG_INFOS);
return null;
});
configBackingStore.putConnectorConfig(CONN2, CONN2_CONFIG);
PowerMock.expectLastCall().andThrow(new ConnectException("Error writing connector configuration to Kafka"));
// verify that the exception from config backing store write is propagated via the callback
putConnectorCallback.onCompletion(EasyMock.anyObject(ConnectException.class), EasyMock.isNull());
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// These will occur just before/during the second tick
member.wakeup();
PowerMock.expectLastCall();
member.ensureActive();
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
PowerMock.replayAll();
herder.putConnectorConfig(CONN2, CONN2_CONFIG, false, putConnectorCallback);
// First tick runs the initial herder request, which issues an asynchronous request for
// connector validation
herder.tick();
// Once that validation is complete, another request is added to the herder request queue
// for actually performing the config write; this tick is for that request
herder.tick();
time.sleep(1000L);
assertStatistics(3, 1, 100, 1000L);
PowerMock.verifyAll();
}
@Test
public void testCreateConnectorFailedValidation() throws Exception {
EasyMock.expect(member.memberId()).andStubReturn("leader");
EasyMock.expect(member.currentProtocolVersion()).andStubReturn(CONNECT_PROTOCOL_V0);
expectRebalance(1, Collections.emptyList(), Collections.emptyList(), true);
expectConfigRefreshAndSnapshot(SNAPSHOT);
HashMap<String, String> config = new HashMap<>(CONN2_CONFIG);
config.remove(ConnectorConfig.NAME_CONFIG);
member.wakeup();
PowerMock.expectLastCall();
// mock the actual validation since its asynchronous nature is difficult to test and should
// be covered sufficiently by the unit tests for the AbstractHerder class
Capture<Callback<ConfigInfos>> validateCallback = newCapture();
herder.validateConnectorConfig(EasyMock.eq(config), capture(validateCallback));
PowerMock.expectLastCall().andAnswer(() -> {
// CONN2 creation should fail
validateCallback.getValue().onCompletion(null, CONN2_INVALID_CONFIG_INFOS);
return null;
});
Capture<Throwable> error = newCapture();
putConnectorCallback.onCompletion(capture(error), EasyMock.isNull());
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// These will occur just before/during the second tick
member.wakeup();
PowerMock.expectLastCall();
member.ensureActive();
PowerMock.expectLastCall();
member.poll(EasyMock.anyInt());
PowerMock.expectLastCall();
// No immediate action besides this -- change will be picked up via the config log
PowerMock.replayAll();
herder.putConnectorConfig(CONN2, config, false, putConnectorCallback);
herder.tick();
herder.tick();
assertTrue(error.hasCaptured());
assertTrue(error.getValue() instanceof BadRequestException);
time.sleep(1000L);
assertStatistics(3, 1, 100, 1000L);
PowerMock.verifyAll();
}
@Test
public void testConnectorNameConflictsWithWorkerGroupId() {
Map<String, String> config = new HashMap<>(CONN2_CONFIG);
config.put(ConnectorConfig.NAME_CONFIG, "test-group");
SinkConnector connectorMock = PowerMock.createMock(SinkConnector.class);
PowerMock.replayAll(connectorMock);
// CONN2 creation should fail because the worker group id (connect-test-group) conflicts with
// the consumer group id we would use for this sink
Map<String, ConfigValue> validatedConfigs = herder.validateSinkConnectorConfig(
connectorMock, SinkConnectorConfig.configDef(), config);
ConfigValue nameConfig = validatedConfigs.get(ConnectorConfig.NAME_CONFIG);
assertEquals(
Collections.singletonList("Consumer group for sink connector named test-group conflicts with Connect worker group connect-test-group"),
nameConfig.errorMessages());
PowerMock.verifyAll();
}
@Test
public void testExactlyOnceSourceSupportValidation() {
herder = exactlyOnceHerder();
Map<String, String> config = new HashMap<>();
config.put(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG, REQUIRED.toString());
SourceConnector connectorMock = PowerMock.createMock(SourceConnector.class);
EasyMock.expect(connectorMock.exactlyOnceSupport(EasyMock.eq(config)))
.andReturn(ExactlyOnceSupport.SUPPORTED);
PowerMock.replayAll(connectorMock);
Map<String, ConfigValue> validatedConfigs = herder.validateSourceConnectorConfig(
connectorMock, SourceConnectorConfig.configDef(), config);
List<String> errors = validatedConfigs.get(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG).errorMessages();
assertEquals(Collections.emptyList(), errors);
PowerMock.verifyAll();
}
@Test
public void testExactlyOnceSourceSupportValidationOnUnsupportedConnector() {
herder = exactlyOnceHerder();
Map<String, String> config = new HashMap<>();
config.put(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG, REQUIRED.toString());
SourceConnector connectorMock = PowerMock.createMock(SourceConnector.class);
EasyMock.expect(connectorMock.exactlyOnceSupport(EasyMock.eq(config)))
.andReturn(ExactlyOnceSupport.UNSUPPORTED);
PowerMock.replayAll(connectorMock);
Map<String, ConfigValue> validatedConfigs = herder.validateSourceConnectorConfig(
connectorMock, SourceConnectorConfig.configDef(), config);
List<String> errors = validatedConfigs.get(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG).errorMessages();
assertEquals(
Collections.singletonList("The connector does not support exactly-once semantics with the provided configuration."),
errors);
PowerMock.verifyAll();
}
@Test
public void testExactlyOnceSourceSupportValidationOnUnknownConnector() {
herder = exactlyOnceHerder();
Map<String, String> config = new HashMap<>();
config.put(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG, REQUIRED.toString());
SourceConnector connectorMock = PowerMock.createMock(SourceConnector.class);
EasyMock.expect(connectorMock.exactlyOnceSupport(EasyMock.eq(config)))
.andReturn(null);
PowerMock.replayAll(connectorMock);
Map<String, ConfigValue> validatedConfigs = herder.validateSourceConnectorConfig(
connectorMock, SourceConnectorConfig.configDef(), config);
List<String> errors = validatedConfigs.get(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG).errorMessages();
assertFalse(errors.isEmpty());
assertTrue(
"Error message did not contain expected text: " + errors.get(0),
errors.get(0).contains("The connector does not implement the API required for preflight validation of exactly-once source support."));
assertEquals(1, errors.size());
PowerMock.verifyAll();
}
@Test
public void testExactlyOnceSourceSupportValidationHandlesConnectorErrorsGracefully() {
herder = exactlyOnceHerder();
Map<String, String> config = new HashMap<>();
config.put(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG, REQUIRED.toString());
SourceConnector connectorMock = PowerMock.createMock(SourceConnector.class);
String errorMessage = "time to add a new unit test :)";
EasyMock.expect(connectorMock.exactlyOnceSupport(EasyMock.eq(config)))
.andThrow(new NullPointerException(errorMessage));
PowerMock.replayAll(connectorMock);
Map<String, ConfigValue> validatedConfigs = herder.validateSourceConnectorConfig(
connectorMock, SourceConnectorConfig.configDef(), config);
List<String> errors = validatedConfigs.get(SourceConnectorConfig.EXACTLY_ONCE_SUPPORT_CONFIG).errorMessages();
assertFalse(errors.isEmpty());