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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;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.container.handler.VipStatus;
import com.yahoo.container.jdisc.config.HealthMonitorConfig;
import com.yahoo.container.jdisc.state.StateMonitor;
import com.yahoo.jdisc.core.SystemTimer;
import com.yahoo.vespa.config.server.deploy.DeployTester;
import com.yahoo.vespa.config.server.rpc.RpcServer;
import com.yahoo.vespa.config.server.version.VersionState;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;
import java.time.Duration;
import java.time.Instant;
import java.util.function.BooleanSupplier;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* @author Ulf Lilleengen
* @author Harald Musum
*/
public class ConfigServerBootstrapTest {
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Test
public void testBootStrap() throws Exception {
ConfigserverConfig configserverConfig = createConfigserverConfig(temporaryFolder);
DeployTester tester = new DeployTester("src/test/apps/hosted/", configserverConfig);
tester.deployApp("myApp", "4.5.6", Instant.now());
File versionFile = temporaryFolder.newFile();
VersionState versionState = new VersionState(versionFile);
assertTrue(versionState.isUpgraded());
RpcServer rpcServer = createRpcServer(configserverConfig);
VipStatus vipStatus = new VipStatus();
ConfigServerBootstrap bootstrap = new ConfigServerBootstrap(tester.applicationRepository(), rpcServer, versionState, createStateMonitor(), vipStatus);
assertFalse(vipStatus.isInRotation());
waitUntil(rpcServer::isRunning, "failed waiting for Rpc server running");
waitUntil(() -> bootstrap.status() == StateMonitor.Status.up, "failed waiting for status 'up'");
waitUntil(vipStatus::isInRotation, "failed waiting for server to be in rotation");
bootstrap.deconstruct();
assertEquals(StateMonitor.Status.down, bootstrap.status());
assertFalse(rpcServer.isRunning());
assertFalse(vipStatus.isInRotation());
}
@Test
public void testBootStrapWhenRedeploymentFails() throws Exception {
ConfigserverConfig configserverConfig = createConfigserverConfig(temporaryFolder);
DeployTester tester = new DeployTester("src/test/apps/hosted/", configserverConfig);
tester.deployApp("myApp", "4.5.6", Instant.now());
File versionFile = temporaryFolder.newFile();
VersionState versionState = new VersionState(versionFile);
assertTrue(versionState.isUpgraded());
// Manipulate application package so that it will fail deployment when config server starts
java.nio.file.Files.delete(Paths.get(configserverConfig.configServerDBDir())
.resolve("tenants/")
.resolve(tester.tenant().getName().value())
.resolve("sessions/2/services.xml"));
RpcServer rpcServer = createRpcServer(configserverConfig);
VipStatus vipStatus = new VipStatus();
ConfigServerBootstrap bootstrap = new ConfigServerBootstrap(tester.applicationRepository(), rpcServer, versionState,
createStateMonitor(), vipStatus,
ConfigServerBootstrap.MainThread.DO_NOT_START,
ConfigServerBootstrap.RedeployingApplicationsFails.CONTINUE);
assertFalse(vipStatus.isInRotation());
// Call method directly, to be sure that it is finished redeploying all applications and we can check status
bootstrap.run();
// App is invalid, bootstrapping was unsuccessful. Status should be 'initializing',
// rpc server should not be running and it should be out of rotation
assertEquals(StateMonitor.Status.initializing, bootstrap.status());
assertFalse(rpcServer.isRunning());
assertFalse(vipStatus.isInRotation());
}
private void waitUntil(BooleanSupplier booleanSupplier, String messageIfWaitingFails) throws InterruptedException {
Duration timeout = Duration.ofSeconds(60);
Instant endTime = Instant.now().plus(timeout);
while (Instant.now().isBefore(endTime)) {
if (booleanSupplier.getAsBoolean())
return;
Thread.sleep(10);
}
throw new RuntimeException(messageIfWaitingFails);
}
private MockRpc createRpcServer(ConfigserverConfig configserverConfig) throws IOException {
return new MockRpc(configserverConfig.rpcport(), temporaryFolder.newFolder());
}
private StateMonitor createStateMonitor() {
return new StateMonitor(new HealthMonitorConfig(new HealthMonitorConfig.Builder().initialStatus("initializing")),
new SystemTimer());
}
private static ConfigserverConfig createConfigserverConfig(TemporaryFolder temporaryFolder) throws IOException {
return new ConfigserverConfig(new ConfigserverConfig.Builder()
.configServerDBDir(temporaryFolder.newFolder("serverdb").getAbsolutePath())
.configDefinitionsDir(temporaryFolder.newFolder("configdefinitions").getAbsolutePath())
.hostedVespa(true)
.multitenant(true)
.maxDurationOfBootstrap(1) /* seconds */);
}
public static class MockRpc extends com.yahoo.vespa.config.server.rpc.MockRpc {
volatile boolean isRunning = false;
MockRpc(int port, File tempDir) {
super(port, tempDir);
}
@Override
public void run() {
isRunning = true;
}
@Override
public void stop() {
isRunning = false;
}
@Override
public boolean isRunning() {
return isRunning;
}
}
}
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