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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.application;
import com.github.tomakehurst.wiremock.junit.WireMockRule;
import com.yahoo.config.model.api.Model;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.ApplicationName;
import com.yahoo.config.provision.InstanceName;
import com.yahoo.config.provision.TenantName;
import com.yahoo.component.Version;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.slime.Slime;
import com.yahoo.slime.SlimeUtils;
import com.yahoo.vespa.config.server.ServerCache;
import com.yahoo.vespa.config.server.monitoring.MetricUpdater;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.URI;
import java.time.Duration;
import java.util.Arrays;
import java.util.function.Consumer;
import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
import static com.github.tomakehurst.wiremock.client.WireMock.get;
import static com.github.tomakehurst.wiremock.client.WireMock.okJson;
import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.options;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Ulf Lilleengen
* @author mpolden
*/
public class ConfigConvergenceCheckerTest {
private static final Duration clientTimeout = Duration.ofSeconds(10);
private final TenantName tenant = TenantName.from("mytenant");
private final ApplicationId appId = ApplicationId.from(tenant, ApplicationName.from("myapp"), InstanceName.from("myinstance"));
private Application application;
private ConfigConvergenceChecker checker;
private URI service;
private URI service2;
@Rule
public TemporaryFolder folder = new TemporaryFolder();
@Rule
public final WireMockRule wireMock = new WireMockRule(options().dynamicPort(), true);
@Rule
public final WireMockRule wireMock2 = new WireMockRule(options().dynamicPort(), true);
@Before
public void setup() {
service = testServer();
service2 = testServer(wireMock2);
Model mockModel = MockModel.createContainer(service.getHost(), service.getPort());
application = new Application(mockModel,
new ServerCache(),
3,
false,
new Version(0, 0, 0),
MetricUpdater.createTestUpdater(), appId);
checker = new ConfigConvergenceChecker();
}
@Test
public void service_convergence() {
{ // Known service
String serviceName = hostAndPort(this.service);
URI requestUrl = testServer().resolve("/serviceconverge/" + serviceName);
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":3}}")));
HttpResponse serviceResponse = checker.getServiceConfigGenerationResponse(application, hostAndPort(this.service), requestUrl, clientTimeout);
assertResponse("{\n" +
" \"url\": \"" + requestUrl.toString() + "\",\n" +
" \"host\": \"" + hostAndPort(this.service) + "\",\n" +
" \"wantedGeneration\": 3,\n" +
" \"converged\": true,\n" +
" \"currentGeneration\": 3\n" +
"}",
200,
serviceResponse);
}
{ // Missing service
String serviceName = "notPresent:1337";
URI requestUrl = testServer().resolve("/serviceconverge/" + serviceName);
HttpResponse response = checker.getServiceConfigGenerationResponse(application, "notPresent:1337", requestUrl, clientTimeout);
assertResponse("{\n" +
" \"url\": \"" + requestUrl.toString() + "\",\n" +
" \"host\": \"" + serviceName + "\",\n" +
" \"wantedGeneration\": 3,\n" +
" \"problem\": \"Host:port (service) no longer part of application, refetch list of services.\"\n" +
"}",
410,
response);
}
}
@Test
public void service_list_convergence() {
{
String serviceName = hostAndPort(this.service);
URI requestUrl = testServer().resolve("/serviceconverge");
URI serviceUrl = testServer().resolve("/serviceconverge/" + serviceName);
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":3}}")));
HttpResponse response = checker.getServiceConfigGenerationsResponse(application, requestUrl, clientTimeout);
assertResponse("{\n" +
" \"services\": [\n" +
" {\n" +
" \"host\": \"" + serviceUrl.getHost() + "\",\n" +
" \"port\": " + serviceUrl.getPort() + ",\n" +
" \"type\": \"container\",\n" +
" \"url\": \"" + serviceUrl.toString() + "\",\n" +
" \"currentGeneration\":" + 3 + "\n" +
" }\n" +
" ],\n" +
" \"url\": \"" + requestUrl.toString() + "\",\n" +
" \"currentGeneration\": 3,\n" +
" \"wantedGeneration\": 3,\n" +
" \"converged\": true\n" +
"}",
200,
response);
}
{ // Model with two hosts on different generations
MockModel model = new MockModel(Arrays.asList(
MockModel.createContainerHost(service.getHost(), service.getPort()),
MockModel.createContainerHost(service2.getHost(), service2.getPort()))
);
Application application = new Application(model, new ServerCache(), 4,
false,
new Version(0, 0, 0),
MetricUpdater.createTestUpdater(), appId);
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":4}}")));
wireMock2.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":3}}")));
URI requestUrl = testServer().resolve("/serviceconverge");
URI serviceUrl = testServer().resolve("/serviceconverge/" + hostAndPort(service));
URI serviceUrl2 = testServer().resolve("/serviceconverge/" + hostAndPort(service2));
HttpResponse response = checker.getServiceConfigGenerationsResponse(application, requestUrl, clientTimeout);
assertResponse("{\n" +
" \"services\": [\n" +
" {\n" +
" \"host\": \"" + service.getHost() + "\",\n" +
" \"port\": " + service.getPort() + ",\n" +
" \"type\": \"container\",\n" +
" \"url\": \"" + serviceUrl.toString() + "\",\n" +
" \"currentGeneration\":" + 4 + "\n" +
" },\n" +
" {\n" +
" \"host\": \"" + service2.getHost() + "\",\n" +
" \"port\": " + service2.getPort() + ",\n" +
" \"type\": \"container\",\n" +
" \"url\": \"" + serviceUrl2.toString() + "\",\n" +
" \"currentGeneration\":" + 3 + "\n" +
" }\n" +
" ],\n" +
" \"url\": \"" + requestUrl.toString() + "\",\n" +
" \"currentGeneration\": 3,\n" +
" \"wantedGeneration\": 4,\n" +
" \"converged\": false\n" +
"}",
200,
response);
}
}
@Test
public void service_convergence_timeout() {
URI requestUrl = testServer().resolve("/serviceconverge");
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(aResponse()
.withFixedDelay((int) clientTimeout.plus(Duration.ofSeconds(1)).toMillis())
.withBody("response too slow")));
HttpResponse response = checker.getServiceConfigGenerationResponse(application, hostAndPort(service), requestUrl, Duration.ofMillis(1));
// Message contained in a SocketTimeoutException may differ across platforms, so we do a partial match of the response here
assertResponse((responseBody) -> assertTrue("Response matches", responseBody.startsWith(
"{\"url\":\"" + requestUrl.toString() + "\",\"host\":\"" + hostAndPort(requestUrl) +
"\",\"wantedGeneration\":3,\"error\":\"java.net.SocketTimeoutException") &&
responseBody.endsWith("\"}")), 404, response);
}
private URI testServer() {
return testServer(wireMock);
}
private URI testServer(WireMockRule wireMock) {
return URI.create("http://127.0.0.1:" + wireMock.port());
}
private static String hostAndPort(URI uri) {
return uri.getHost() + ":" + uri.getPort();
}
private static void assertResponse(String json, int status, HttpResponse response) {
assertResponse((responseBody) -> {
Slime expected = SlimeUtils.jsonToSlime(json.getBytes());
Slime actual = SlimeUtils.jsonToSlime(responseBody.getBytes());
try {
assertEquals(new String((SlimeUtils.toJsonBytes(expected))), new String(SlimeUtils.toJsonBytes(actual)));
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}, status, response);
}
private static void assertResponse(Consumer<String> assertFunc, int status, HttpResponse response) {
ByteArrayOutputStream responseBody = new ByteArrayOutputStream();
try {
response.render(responseBody);
assertFunc.accept(responseBody.toString());
} catch (IOException e) {
throw new UncheckedIOException(e);
}
assertEquals(status, response.getStatus());
}
}
|
