| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.hdds.server.events; |
| |
| import org.apache.hadoop.hdds.HddsIdFactory; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.ozone.lease.LeaseManager; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * Test the basic functionality of event watcher. |
| */ |
| public class TestEventWatcher { |
| |
| private static final TypedEvent<UnderreplicatedEvent> WATCH_UNDER_REPLICATED = |
| new TypedEvent<>(UnderreplicatedEvent.class); |
| |
| private static final TypedEvent<UnderreplicatedEvent> UNDER_REPLICATED = |
| new TypedEvent<>(UnderreplicatedEvent.class); |
| |
| private static final TypedEvent<ReplicationCompletedEvent> |
| REPLICATION_COMPLETED = new TypedEvent<>(ReplicationCompletedEvent.class); |
| |
| private LeaseManager<Long> leaseManager; |
| |
| @Before |
| public void startLeaseManager() { |
| DefaultMetricsSystem.instance(); |
| leaseManager = new LeaseManager<>("Test", 2000L); |
| leaseManager.start(); |
| } |
| |
| @After |
| public void stopLeaseManager() { |
| leaseManager.shutdown(); |
| DefaultMetricsSystem.shutdown(); |
| } |
| |
| @Test |
| public void testEventHandling() throws InterruptedException { |
| EventQueue queue = new EventQueue(); |
| |
| EventWatcher<UnderreplicatedEvent, ReplicationCompletedEvent> |
| replicationWatcher = createEventWatcher(); |
| |
| EventHandlerStub<UnderreplicatedEvent> underReplicatedEvents = |
| new EventHandlerStub<>(); |
| |
| queue.addHandler(UNDER_REPLICATED, underReplicatedEvents); |
| |
| replicationWatcher.start(queue); |
| |
| long id1 = HddsIdFactory.getLongId(); |
| long id2 = HddsIdFactory.getLongId(); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, |
| new UnderreplicatedEvent(id1, "C1")); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, |
| new UnderreplicatedEvent(id2, "C2")); |
| |
| Assert.assertEquals(0, underReplicatedEvents.getReceivedEvents().size()); |
| |
| Thread.sleep(1000); |
| |
| queue.fireEvent(REPLICATION_COMPLETED, |
| new ReplicationCompletedEvent(id1, "C2", "D1")); |
| |
| Assert.assertEquals(0, underReplicatedEvents.getReceivedEvents().size()); |
| |
| Thread.sleep(1500); |
| |
| queue.processAll(1000L); |
| |
| Assert.assertEquals(1, underReplicatedEvents.getReceivedEvents().size()); |
| Assert.assertEquals(id2, |
| underReplicatedEvents.getReceivedEvents().get(0).id); |
| |
| } |
| |
| @Test |
| public void testInprogressFilter() throws InterruptedException { |
| |
| EventQueue queue = new EventQueue(); |
| |
| EventWatcher<UnderreplicatedEvent, ReplicationCompletedEvent> |
| replicationWatcher = createEventWatcher(); |
| |
| EventHandlerStub<UnderreplicatedEvent> underReplicatedEvents = |
| new EventHandlerStub<>(); |
| |
| queue.addHandler(UNDER_REPLICATED, underReplicatedEvents); |
| |
| replicationWatcher.start(queue); |
| |
| UnderreplicatedEvent event1 = |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C1"); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, event1); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C2")); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C1")); |
| |
| queue.processAll(1000L); |
| Thread.sleep(1000L); |
| List<UnderreplicatedEvent> c1todo = replicationWatcher |
| .getTimeoutEvents(e -> e.containerId.equalsIgnoreCase("C1")); |
| |
| Assert.assertEquals(2, c1todo.size()); |
| Assert.assertTrue(replicationWatcher.contains(event1)); |
| Thread.sleep(1500L); |
| |
| c1todo = replicationWatcher |
| .getTimeoutEvents(e -> e.containerId.equalsIgnoreCase("C1")); |
| Assert.assertEquals(0, c1todo.size()); |
| Assert.assertFalse(replicationWatcher.contains(event1)); |
| |
| } |
| |
| @Test |
| public void testMetrics() throws InterruptedException { |
| |
| DefaultMetricsSystem.initialize("test"); |
| |
| EventQueue queue = new EventQueue(); |
| |
| EventWatcher<UnderreplicatedEvent, ReplicationCompletedEvent> |
| replicationWatcher = createEventWatcher(); |
| |
| EventHandlerStub<UnderreplicatedEvent> underReplicatedEvents = |
| new EventHandlerStub<>(); |
| |
| queue.addHandler(UNDER_REPLICATED, underReplicatedEvents); |
| |
| replicationWatcher.start(queue); |
| |
| //send 3 event to track 3 in-progress activity |
| UnderreplicatedEvent event1 = |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C1"); |
| |
| UnderreplicatedEvent event2 = |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C2"); |
| |
| UnderreplicatedEvent event3 = |
| new UnderreplicatedEvent(HddsIdFactory.getLongId(), "C1"); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, event1); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, event2); |
| |
| queue.fireEvent(WATCH_UNDER_REPLICATED, event3); |
| |
| //1st event is completed, don't need to track any more |
| ReplicationCompletedEvent event1Completed = |
| new ReplicationCompletedEvent(event1.id, "C1", "D1"); |
| |
| queue.fireEvent(REPLICATION_COMPLETED, event1Completed); |
| |
| //lease manager timeout = 2000L |
| Thread.sleep(3 * 2000L); |
| |
| queue.processAll(2000L); |
| |
| //until now: 3 in-progress activities are tracked with three |
| // UnderreplicatedEvents. The first one is completed, the remaining two |
| // are timed out (as the timeout -- defined in the lease manager -- is |
| // 2000ms). |
| |
| EventWatcherMetrics metrics = replicationWatcher.getMetrics(); |
| |
| //3 events are received |
| Assert.assertEquals(3, metrics.getTrackedEvents().value()); |
| |
| //completed + timed out = all messages |
| Assert.assertEquals( |
| "number of timed out and completed messages should be the same as the" |
| + " all messages", |
| metrics.getTrackedEvents().value(), |
| metrics.getCompletedEvents().value() + metrics.getTimedOutEvents() |
| .value()); |
| |
| //_at least_ two are timed out. |
| Assert.assertTrue("At least two events should be timed out.", |
| metrics.getTimedOutEvents().value() >= 2); |
| |
| DefaultMetricsSystem.shutdown(); |
| } |
| |
| private EventWatcher<UnderreplicatedEvent, ReplicationCompletedEvent> |
| createEventWatcher() { |
| return new CommandWatcherExample(WATCH_UNDER_REPLICATED, |
| REPLICATION_COMPLETED, leaseManager); |
| } |
| |
| private static class CommandWatcherExample |
| extends EventWatcher<UnderreplicatedEvent, ReplicationCompletedEvent> { |
| |
| CommandWatcherExample(Event<UnderreplicatedEvent> startEvent, |
| Event<ReplicationCompletedEvent> completionEvent, |
| LeaseManager<Long> leaseManager) { |
| super("TestCommandWatcher", startEvent, completionEvent, leaseManager); |
| } |
| |
| @Override |
| protected void onTimeout(EventPublisher publisher, |
| UnderreplicatedEvent payload) { |
| publisher.fireEvent(UNDER_REPLICATED, payload); |
| } |
| |
| @Override |
| protected void onFinished(EventPublisher publisher, |
| UnderreplicatedEvent payload) { |
| //Good job. We did it. |
| } |
| |
| @Override |
| public EventWatcherMetrics getMetrics() { |
| return super.getMetrics(); |
| } |
| } |
| |
| private static class ReplicationCompletedEvent |
| implements IdentifiableEventPayload { |
| |
| private final long id; |
| |
| private final String containerId; |
| |
| private final String datanodeId; |
| |
| ReplicationCompletedEvent(long id, String containerId, |
| String datanodeId) { |
| this.id = id; |
| this.containerId = containerId; |
| this.datanodeId = datanodeId; |
| } |
| |
| @Override |
| public long getId() { |
| return id; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| ReplicationCompletedEvent that = (ReplicationCompletedEvent) o; |
| return Objects.equals(containerId, that.containerId) && Objects |
| .equals(datanodeId, that.datanodeId); |
| } |
| |
| @Override |
| public int hashCode() { |
| |
| return Objects.hash(containerId, datanodeId); |
| } |
| } |
| |
| private static class UnderreplicatedEvent |
| |
| implements IdentifiableEventPayload { |
| |
| private final long id; |
| |
| private final String containerId; |
| |
| UnderreplicatedEvent(long id, String containerId) { |
| this.containerId = containerId; |
| this.id = id; |
| } |
| |
| @Override |
| public long getId() { |
| return id; |
| } |
| } |
| |
| } |