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// 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.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
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.config.provision.Version;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.vespa.config.server.ServerCache;
import com.yahoo.vespa.config.server.http.SessionHandlerTest;
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.IOException;
import java.io.UncheckedIOException;
import java.net.URI;
import java.time.Duration;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import static com.yahoo.vespa.config.server.application.ConfigConvergenceChecker.ServiceResponse;
import static org.junit.Assert.assertEquals;
/**
* @author Ulf Lilleengen
*/
public class ConfigConvergenceCheckerTest {
private static final ObjectMapper mapper = new ObjectMapper();
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 Map<URI, Long> currentGeneration;
@Rule
public TemporaryFolder folder = new TemporaryFolder();
@Before
public void setup() {
Model mockModel = MockModel.createContainer("localhost", 1337);
application = new Application(mockModel,
new ServerCache(),
3,
false,
Version.fromIntValues(0, 0, 0),
MetricUpdater.createTestUpdater(), appId);
currentGeneration = new HashMap<>();
checker = new ConfigConvergenceChecker(
(client, serviceUri) -> () -> asJson("{\"config\":{\"generation\":"
+ currentGeneration.getOrDefault(serviceUri, 3L)
+ "}}"));
}
@Test
public void service_convergence() throws Exception {
ServiceResponse serviceResponse = checker.checkService(application,
"localhost:1337",
URI.create("http://foo:234/serviceconverge/localhost:1337"), Duration.ofSeconds(5));
assertEquals(200, serviceResponse.getStatus());
assertJsonEquals("{\n" +
" \"url\": \"http://foo:234/serviceconverge/localhost:1337\",\n" +
" \"host\": \"localhost:1337\",\n" +
" \"wantedGeneration\": 3,\n" +
" \"converged\": true,\n" +
" \"currentGeneration\": 3\n" +
"}",
SessionHandlerTest.getRenderedString(serviceResponse));
ServiceResponse hostMissingResponse = checker.checkService(application,
"notPresent:1337",
URI.create("http://foo:234/serviceconverge/notPresent:1337"), Duration.ofSeconds(5));
assertEquals(410, hostMissingResponse.getStatus());
assertJsonEquals("{\n" +
" \"url\": \"http://foo:234/serviceconverge/notPresent:1337\",\n" +
" \"host\": \"notPresent:1337\",\n" +
" \"wantedGeneration\": 3,\n" +
" \"problem\": \"Host:port (service) no longer part of application, refetch list of services.\"\n" +
"}",
SessionHandlerTest.getRenderedString(hostMissingResponse));
}
@Test
public void service_list_convergence() throws Exception {
HttpResponse serviceListResponse = checker.servicesToCheck(application, URI.create("http://foo:234/serviceconverge"), Duration.ofSeconds(5));
assertEquals(200, serviceListResponse.getStatus());
assertJsonEquals("{\n" +
" \"services\": [\n" +
" {\n" +
" \"host\": \"localhost\",\n" +
" \"port\": 1337,\n" +
" \"type\": \"container\",\n" +
" \"url\": \"http://foo:234/serviceconverge/localhost:1337\"\n" +
" }\n" +
" ],\n" +
" \"url\": \"http://foo:234/serviceconverge\",\n" +
" \"currentGeneration\": 3,\n" +
" \"wantedGeneration\": 3,\n" +
" \"converged\": true\n" +
"}",
SessionHandlerTest.getRenderedString(serviceListResponse));
// Model with two hosts on different generations
MockModel model = new MockModel(Arrays.asList(
MockModel.createContainerHost("host1", 1234),
MockModel.createContainerHost("host2", 1234))
);
Application application = new Application(model, new ServerCache(), 4,
false,
Version.fromIntValues(0, 0, 0),
MetricUpdater.createTestUpdater(), appId);
currentGeneration.put(URI.create("http://host2:1234"), 4L);
serviceListResponse = checker.servicesToCheck(application, URI.create("http://foo:234/serviceconverge"), Duration.ofSeconds(5));
assertEquals(200, serviceListResponse.getStatus());
assertJsonEquals("{\n" +
" \"services\": [\n" +
" {\n" +
" \"host\": \"host1\",\n" +
" \"port\": 1234,\n" +
" \"type\": \"container\",\n" +
" \"url\": \"http://foo:234/serviceconverge/host1:1234\"\n" +
" },\n" +
" {\n" +
" \"host\": \"host2\",\n" +
" \"port\": 1234,\n" +
" \"type\": \"container\",\n" +
" \"url\": \"http://foo:234/serviceconverge/host2:1234\"\n" +
" }\n" +
" ],\n" +
" \"url\": \"http://foo:234/serviceconverge\",\n" +
" \"currentGeneration\": 3,\n" +
" \"wantedGeneration\": 4,\n" +
" \"converged\": false\n" +
"}",
SessionHandlerTest.getRenderedString(serviceListResponse));
}
private static void assertJsonEquals(String expected, String actual) {
assertEquals(asJson(expected), asJson(actual));
}
private static JsonNode asJson(String data) {
try {
return mapper.readTree(data);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
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