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
|
// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.nodeadmin;
import com.yahoo.collections.Pair;
import com.yahoo.metrics.simple.MetricReceiver;
import com.yahoo.test.ManualClock;
import com.yahoo.vespa.hosted.dockerapi.ContainerName;
import com.yahoo.vespa.hosted.dockerapi.metrics.MetricReceiverWrapper;
import com.yahoo.vespa.hosted.node.admin.docker.DockerOperations;
import com.yahoo.vespa.hosted.node.admin.maintenance.StorageMaintainer;
import com.yahoo.vespa.hosted.node.admin.maintenance.acl.AclMaintainer;
import com.yahoo.vespa.hosted.node.admin.nodeagent.NodeAgent;
import com.yahoo.vespa.hosted.node.admin.nodeagent.NodeAgentImpl;
import org.junit.Test;
import org.mockito.InOrder;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import static java.util.Arrays.asList;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyBoolean;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
/**
* @author bakksjo
*/
public class NodeAdminImplTest {
// Trick to allow mocking of typed interface without casts/warnings.
private interface NodeAgentFactory extends Function<String, NodeAgent> {}
private final DockerOperations dockerOperations = mock(DockerOperations.class);
private final Function<String, NodeAgent> nodeAgentFactory = mock(NodeAgentFactory.class);
private final StorageMaintainer storageMaintainer = mock(StorageMaintainer.class);
private final AclMaintainer aclMaintainer = mock(AclMaintainer.class);
private final ManualClock clock = new ManualClock();
private final NodeAdminImpl nodeAdmin = new NodeAdminImpl(dockerOperations, nodeAgentFactory, storageMaintainer, aclMaintainer,
new MetricReceiverWrapper(MetricReceiver.nullImplementation), clock);
@Test
public void nodeAgentsAreProperlyLifeCycleManaged() throws Exception {
final String hostName1 = "host1.test.yahoo.com";
final String hostName2 = "host2.test.yahoo.com";
final ContainerName containerName1 = ContainerName.fromHostname(hostName1);
final NodeAgent nodeAgent1 = mock(NodeAgentImpl.class);
final NodeAgent nodeAgent2 = mock(NodeAgentImpl.class);
when(nodeAgentFactory.apply(eq(hostName1))).thenReturn(nodeAgent1);
when(nodeAgentFactory.apply(eq(hostName2))).thenReturn(nodeAgent2);
final InOrder inOrder = inOrder(nodeAgentFactory, nodeAgent1, nodeAgent2);
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.emptyList(), Collections.singletonList(containerName1));
verifyNoMoreInteractions(nodeAgentFactory);
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.singletonList(hostName1), Collections.singletonList(containerName1));
inOrder.verify(nodeAgentFactory).apply(hostName1);
inOrder.verify(nodeAgent1).start();
inOrder.verify(nodeAgent1, never()).stop();
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.singletonList(hostName1), Collections.singletonList(containerName1));
inOrder.verify(nodeAgentFactory, never()).apply(any(String.class));
inOrder.verify(nodeAgent1, never()).start();
inOrder.verify(nodeAgent1, never()).stop();
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.emptyList(), Collections.singletonList(containerName1));
inOrder.verify(nodeAgentFactory, never()).apply(any(String.class));
verify(nodeAgent1).stop();
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.singletonList(hostName2), Collections.singletonList(containerName1));
inOrder.verify(nodeAgentFactory).apply(hostName2);
inOrder.verify(nodeAgent2).start();
inOrder.verify(nodeAgent2, never()).stop();
verify(nodeAgent1).stop();
nodeAdmin.synchronizeNodeSpecsToNodeAgents(Collections.emptyList(), Collections.emptyList());
inOrder.verify(nodeAgentFactory, never()).apply(any(String.class));
inOrder.verify(nodeAgent2, never()).start();
inOrder.verify(nodeAgent2).stop();
verifyNoMoreInteractions(nodeAgent1);
verifyNoMoreInteractions(nodeAgent2);
}
@Test
public void testSetFrozen() throws Exception {
List<NodeAgent> nodeAgents = new ArrayList<>();
List<String> existingContainerHostnames = new ArrayList<>();
for (int i = 0; i < 3; i++) {
final String hostName = "host" + i + ".test.yahoo.com";
NodeAgent nodeAgent = mock(NodeAgent.class);
nodeAgents.add(nodeAgent);
when(nodeAgentFactory.apply(eq(hostName))).thenReturn(nodeAgent);
existingContainerHostnames.add(hostName);
}
nodeAdmin.synchronizeNodeSpecsToNodeAgents(existingContainerHostnames,
existingContainerHostnames.stream().map(ContainerName::fromHostname).collect(Collectors.toList()));
assertTrue(nodeAdmin.isFrozen()); // Initially everything is frozen to force convergence
mockNodeAgentSetFrozenResponse(nodeAgents, true, true, true);
assertTrue(nodeAdmin.setFrozen(false)); // Unfreeze everything
mockNodeAgentSetFrozenResponse(nodeAgents, false, false, false);
assertFalse(nodeAdmin.setFrozen(true)); // NodeAdmin freezes only when all the NodeAgents are frozen
mockNodeAgentSetFrozenResponse(nodeAgents, false, true, true);
assertFalse(nodeAdmin.setFrozen(true));
assertFalse(nodeAdmin.isFrozen());
mockNodeAgentSetFrozenResponse(nodeAgents, true, true, true);
assertTrue(nodeAdmin.setFrozen(true));
assertTrue(nodeAdmin.isFrozen());
mockNodeAgentSetFrozenResponse(nodeAgents, true, true, true);
assertTrue(nodeAdmin.setFrozen(true));
assertTrue(nodeAdmin.isFrozen());
mockNodeAgentSetFrozenResponse(nodeAgents, false, false, false);
assertFalse(nodeAdmin.setFrozen(false));
assertFalse(nodeAdmin.isFrozen()); // NodeAdmin unfreezes instantly
mockNodeAgentSetFrozenResponse(nodeAgents, false, false, true);
assertFalse(nodeAdmin.setFrozen(false));
assertFalse(nodeAdmin.isFrozen());
mockNodeAgentSetFrozenResponse(nodeAgents, true, true, true);
assertTrue(nodeAdmin.setFrozen(false));
assertFalse(nodeAdmin.isFrozen());
}
@Test
public void testSubsystemFreezeDuration() {
// Initially everything is frozen to force convergence
assertTrue(nodeAdmin.isFrozen());
assertTrue(nodeAdmin.subsystemFreezeDuration().isZero());
clock.advance(Duration.ofSeconds(1));
assertTrue(nodeAdmin.subsystemFreezeDuration().equals(Duration.ofSeconds(1)));
// Unfreezing floors freeze duration
assertTrue(nodeAdmin.setFrozen(false)); // Unfreeze everything
assertTrue(nodeAdmin.subsystemFreezeDuration().isZero());
clock.advance(Duration.ofSeconds(1));
assertTrue(nodeAdmin.subsystemFreezeDuration().isZero());
// Advancing time now will make freeze duration proceed according to clock
assertTrue(nodeAdmin.setFrozen(true));
assertTrue(nodeAdmin.subsystemFreezeDuration().isZero());
clock.advance(Duration.ofSeconds(1));
assertTrue(nodeAdmin.subsystemFreezeDuration().equals(Duration.ofSeconds(1)));
}
@Test
public void fullOuterJoinTest() {
final List<String> strings = asList("3", "4", "5", "6", "7", "8", "9", "10");
final List<Integer> integers = asList(1, 2, 3, 5, 8, 13, 21);
final Set<Pair<Optional<String>, Optional<Integer>>> expectedResult = new HashSet<>(asList(
newPair(null, 1),
newPair(null, 2),
newPair("3", 3),
newPair("4", null),
newPair("5", 5),
newPair("6", null),
newPair("7", null),
newPair("8", 8),
newPair("9", null),
newPair("10", null),
newPair(null, 13),
newPair(null, 21)));
assertThat(
NodeAdminImpl.fullOuterJoin(
strings.stream(), string -> string,
integers.stream(), String::valueOf)
.collect(Collectors.toSet()),
is(expectedResult));
}
private static <T, U> Pair<Optional<T>, Optional<U>> newPair(T t, U u) {
return new Pair<>(Optional.ofNullable(t), Optional.ofNullable(u));
}
private void mockNodeAgentSetFrozenResponse(List<NodeAgent> nodeAgents, boolean... responses) {
for (int i = 0; i < nodeAgents.size(); i++) {
NodeAgent nodeAgent = nodeAgents.get(i);
when(nodeAgent.setFrozen(anyBoolean())).thenReturn(responses[i]);
}
}
}
|