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// Copyright Vespa.ai. 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.component.Version;
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.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.net.URI;
import java.time.Duration;
import java.util.Arrays;
import java.util.List;
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 com.yahoo.vespa.config.server.application.ConfigConvergenceChecker.ServiceListResponse;
import static com.yahoo.vespa.config.server.application.ConfigConvergenceChecker.ServiceResponse;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
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,
new Version(0, 0, 0),
MetricUpdater.createTestUpdater(), appId);
checker = new ConfigConvergenceChecker();
}
@Test
public void service_convergence() {
{ // Known service
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":3}}")));
ServiceResponse response = checker.getServiceConfigGeneration(application, hostAndPort(this.service), clientTimeout);
assertEquals(3, response.wantedGeneration.longValue());
assertEquals(3, response.currentGeneration.longValue());
assertTrue(response.converged);
assertEquals(ServiceResponse.Status.ok, response.status);
}
{ // Missing service
ServiceResponse response = checker.getServiceConfigGeneration(application, "notPresent:1337", clientTimeout);
assertEquals(3, response.wantedGeneration.longValue());
assertEquals(ServiceResponse.Status.hostNotFound, response.status);
}
}
@Test
public void service_list_convergence() {
{
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(okJson("{\"config\":{\"generation\":3}}")));
ServiceListResponse response = checker.checkConvergenceForAllServices(application, clientTimeout);
assertEquals(3, response.wantedGeneration);
assertEquals(3, response.currentGeneration);
assertTrue(response.converged);
List<ServiceListResponse.Service> services = response.services;
assertEquals(1, services.size());
assertService(this.service, services.get(0), 3);
}
{ // 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,
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");
ServiceListResponse response = checker.checkConvergenceForAllServices(application, clientTimeout);
assertEquals(4, response.wantedGeneration);
assertEquals(3, response.currentGeneration);
assertFalse(response.converged);
List<ServiceListResponse.Service> services = response.services;
assertEquals(2, services.size());
assertService(this.service, services.get(0), 4);
assertService(this.service2, services.get(1), 3);
}
}
@Test
public void service_convergence_timeout() {
wireMock.stubFor(get(urlEqualTo("/state/v1/config")).willReturn(aResponse()
.withFixedDelay((int) clientTimeout.plus(Duration.ofSeconds(1)).toMillis())
.withBody("response too slow")));
ServiceResponse response = checker.getServiceConfigGeneration(application, hostAndPort(service), Duration.ofMillis(1));
assertEquals(3, response.wantedGeneration.longValue());
assertEquals(ServiceResponse.Status.notFound, response.status);
assertTrue(response.errorMessage.get().contains("java.net.SocketTimeoutException: 1 MILLISECONDS"));
}
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 void assertService(URI uri, ServiceListResponse.Service service1, long expectedGeneration) {
assertEquals(expectedGeneration, service1.currentGeneration.longValue());
assertEquals(uri.getHost(), service1.serviceInfo.getHostName());
assertEquals(uri.getPort(), ConfigConvergenceChecker.getStatePort(service1.serviceInfo).get().intValue());
assertEquals("container", service1.serviceInfo.getServiceType());
}
}
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