1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.discovery;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.discovery.zen.fd.FaultDetection;
import org.elasticsearch.discovery.zen.fd.MasterFaultDetection;
import org.elasticsearch.discovery.zen.fd.NodesFaultDetection;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.cluster.NoopClusterService;
import org.elasticsearch.test.transport.MockTransportService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportConnectionListener;
import org.elasticsearch.transport.local.LocalTransport;
import org.hamcrest.Matcher;
import org.hamcrest.Matchers;
import org.junit.After;
import org.junit.Before;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static java.util.Collections.emptyMap;
import static org.hamcrest.Matchers.equalTo;
public class ZenFaultDetectionTests extends ESTestCase {
protected ThreadPool threadPool;
protected static final Version version0 = Version.fromId(/*0*/99);
protected DiscoveryNode nodeA;
protected MockTransportService serviceA;
protected static final Version version1 = Version.fromId(199);
protected DiscoveryNode nodeB;
protected MockTransportService serviceB;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
threadPool = new ThreadPool(getClass().getName());
serviceA = build(Settings.builder().put("name", "TS_A").build(), version0);
nodeA = new DiscoveryNode("TS_A", "TS_A", serviceA.boundAddress().publishAddress(), emptyMap(), version0);
serviceB = build(Settings.builder().put("name", "TS_B").build(), version1);
nodeB = new DiscoveryNode("TS_B", "TS_B", serviceB.boundAddress().publishAddress(), emptyMap(), version1);
// wait till all nodes are properly connected and the event has been sent, so tests in this class
// will not get this callback called on the connections done in this setup
final CountDownLatch latch = new CountDownLatch(4);
TransportConnectionListener waitForConnection = new TransportConnectionListener() {
@Override
public void onNodeConnected(DiscoveryNode node) {
latch.countDown();
}
@Override
public void onNodeDisconnected(DiscoveryNode node) {
fail("disconnect should not be called " + node);
}
};
serviceA.addConnectionListener(waitForConnection);
serviceB.addConnectionListener(waitForConnection);
serviceA.connectToNode(nodeB);
serviceA.connectToNode(nodeA);
serviceB.connectToNode(nodeA);
serviceB.connectToNode(nodeB);
assertThat("failed to wait for all nodes to connect", latch.await(5, TimeUnit.SECONDS), equalTo(true));
serviceA.removeConnectionListener(waitForConnection);
serviceB.removeConnectionListener(waitForConnection);
}
@Override
@After
public void tearDown() throws Exception {
super.tearDown();
serviceA.close();
serviceB.close();
terminate(threadPool);
}
protected MockTransportService build(Settings settings, Version version) {
MockTransportService transportService = new MockTransportService(Settings.EMPTY, new LocalTransport(settings, threadPool, version, new NamedWriteableRegistry()), threadPool);
transportService.start();
return transportService;
}
private DiscoveryNodes buildNodesForA(boolean master) {
DiscoveryNodes.Builder builder = DiscoveryNodes.builder();
builder.put(nodeA);
builder.put(nodeB);
builder.localNodeId(nodeA.id());
builder.masterNodeId(master ? nodeA.id() : nodeB.id());
return builder.build();
}
private DiscoveryNodes buildNodesForB(boolean master) {
DiscoveryNodes.Builder builder = DiscoveryNodes.builder();
builder.put(nodeA);
builder.put(nodeB);
builder.localNodeId(nodeB.id());
builder.masterNodeId(master ? nodeB.id() : nodeA.id());
return builder.build();
}
public void testNodesFaultDetectionConnectOnDisconnect() throws InterruptedException {
Settings.Builder settings = Settings.builder();
boolean shouldRetry = randomBoolean();
// make sure we don't ping again after the initial ping
settings.put(FaultDetection.SETTING_CONNECT_ON_NETWORK_DISCONNECT, shouldRetry)
.put(FaultDetection.SETTING_PING_INTERVAL, "5m");
ClusterState clusterState = ClusterState.builder(new ClusterName("test")).nodes(buildNodesForA(true)).build();
NodesFaultDetection nodesFDA = new NodesFaultDetection(settings.build(), threadPool, serviceA, clusterState.getClusterName());
nodesFDA.setLocalNode(nodeA);
NodesFaultDetection nodesFDB = new NodesFaultDetection(settings.build(), threadPool, serviceB, clusterState.getClusterName());
nodesFDB.setLocalNode(nodeB);
final CountDownLatch pingSent = new CountDownLatch(1);
nodesFDB.addListener(new NodesFaultDetection.Listener() {
@Override
public void onPingReceived(NodesFaultDetection.PingRequest pingRequest) {
pingSent.countDown();
}
});
nodesFDA.updateNodesAndPing(clusterState);
// wait for the first ping to go out, so we will really respond to a disconnect event rather then
// the ping failing
pingSent.await(30, TimeUnit.SECONDS);
final String[] failureReason = new String[1];
final DiscoveryNode[] failureNode = new DiscoveryNode[1];
final CountDownLatch notified = new CountDownLatch(1);
nodesFDA.addListener(new NodesFaultDetection.Listener() {
@Override
public void onNodeFailure(DiscoveryNode node, String reason) {
failureNode[0] = node;
failureReason[0] = reason;
notified.countDown();
}
});
// will raise a disconnect on A
serviceB.stop();
notified.await(30, TimeUnit.SECONDS);
assertEquals(nodeB, failureNode[0]);
Matcher<String> matcher = Matchers.containsString("verified");
if (!shouldRetry) {
matcher = Matchers.not(matcher);
}
assertThat(failureReason[0], matcher);
}
public void testMasterFaultDetectionConnectOnDisconnect() throws InterruptedException {
Settings.Builder settings = Settings.builder();
boolean shouldRetry = randomBoolean();
// make sure we don't ping
settings.put(FaultDetection.SETTING_CONNECT_ON_NETWORK_DISCONNECT, shouldRetry)
.put(FaultDetection.SETTING_PING_INTERVAL, "5m");
ClusterName clusterName = new ClusterName(randomAsciiOfLengthBetween(3, 20));
final ClusterState state = ClusterState.builder(clusterName).nodes(buildNodesForA(false)).build();
MasterFaultDetection masterFD = new MasterFaultDetection(settings.build(), threadPool, serviceA, clusterName,
new NoopClusterService(state));
masterFD.start(nodeB, "test");
final String[] failureReason = new String[1];
final DiscoveryNode[] failureNode = new DiscoveryNode[1];
final CountDownLatch notified = new CountDownLatch(1);
masterFD.addListener(new MasterFaultDetection.Listener() {
@Override
public void onMasterFailure(DiscoveryNode masterNode, Throwable cause, String reason) {
failureNode[0] = masterNode;
failureReason[0] = reason;
notified.countDown();
}
});
// will raise a disconnect on A
serviceB.stop();
notified.await(30, TimeUnit.SECONDS);
assertEquals(nodeB, failureNode[0]);
Matcher<String> matcher = Matchers.containsString("verified");
if (!shouldRetry) {
matcher = Matchers.not(matcher);
}
assertThat(failureReason[0], matcher);
}
}
|
