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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.deploy;
import com.yahoo.component.Version;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.AthenzDomain;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.config.provision.HostFilter;
import com.yahoo.config.provision.Provisioner;
import java.util.logging.Level;
import com.yahoo.vespa.config.server.ApplicationRepository;
import com.yahoo.vespa.config.server.ApplicationRepository.ActionTimer;
import com.yahoo.vespa.config.server.TimeoutBudget;
import com.yahoo.vespa.config.server.application.ApplicationSet;
import com.yahoo.vespa.config.server.http.InternalServerException;
import com.yahoo.vespa.config.server.session.LocalSession;
import com.yahoo.vespa.config.server.session.PrepareParams;
import com.yahoo.vespa.config.server.session.RemoteSession;
import com.yahoo.vespa.config.server.session.Session;
import com.yahoo.vespa.config.server.session.SilentDeployLogger;
import com.yahoo.vespa.config.server.tenant.Tenant;
import com.yahoo.vespa.curator.Lock;
import java.time.Clock;
import java.time.Duration;
import java.util.Optional;
import java.util.logging.Logger;
import static com.yahoo.vespa.curator.Curator.CompletionWaiter;
/**
* The process of deploying an application.
* Deployments are created by an {@link ApplicationRepository}.
* Instances of this are not multithread safe.
*
* @author Ulf Lilleengen
* @author bratseth
*/
public class Deployment implements com.yahoo.config.provision.Deployment {
private static final Logger log = Logger.getLogger(Deployment.class.getName());
/** The session containing the application instance to activate */
private final LocalSession session;
private final ApplicationRepository applicationRepository;
private final Optional<Provisioner> hostProvisioner;
private final Tenant tenant;
private final Duration timeout;
private final Clock clock;
private final DeployLogger logger = new SilentDeployLogger();
/** The repository part of docker image this application should run on. Version is separate from image repo */
final Optional<DockerImage> dockerImageRepository;
/** The Vespa version this application should run on */
private final Version version;
/** True if this deployment is done to bootstrap the config server */
private final boolean isBootstrap;
/** The (optional) Athenz domain this application should use */
private final Optional<AthenzDomain> athenzDomain;
private boolean prepared = false;
/** Whether this model should be validated (only takes effect if prepared=false) */
private final boolean validate;
/** Whether activation of this model should be forced */
private final boolean force;
private Deployment(LocalSession session, ApplicationRepository applicationRepository,
Optional<Provisioner> hostProvisioner, Tenant tenant, Duration timeout,
Clock clock, boolean prepared, boolean validate, boolean isBootstrap, boolean force) {
this.session = session;
this.applicationRepository = applicationRepository;
this.hostProvisioner = hostProvisioner;
this.tenant = tenant;
this.timeout = timeout;
this.clock = clock;
this.prepared = prepared;
this.validate = validate;
this.dockerImageRepository = session.getDockerImageRepository();
this.version = session.getVespaVersion();
this.isBootstrap = isBootstrap;
this.athenzDomain = session.getAthenzDomain();
this.force = force;
}
public static Deployment unprepared(LocalSession session, ApplicationRepository applicationRepository,
Optional<Provisioner> hostProvisioner, Tenant tenant,
Duration timeout, Clock clock, boolean validate, boolean isBootstrap) {
return new Deployment(session, applicationRepository, hostProvisioner, tenant, timeout, clock, false,
validate, isBootstrap, false);
}
public static Deployment prepared(LocalSession session, ApplicationRepository applicationRepository,
Optional<Provisioner> hostProvisioner, Tenant tenant,
Duration timeout, Clock clock, boolean isBootstrap, boolean force) {
return new Deployment(session, applicationRepository, hostProvisioner, tenant,
timeout, clock, true, true, isBootstrap, force);
}
/** Prepares this. This does nothing if this is already prepared */
@Override
public void prepare() {
if (prepared) return;
ApplicationId applicationId = session.getApplicationId();
try (ActionTimer timer = applicationRepository.timerFor(applicationId, "deployment.prepareMillis")) {
TimeoutBudget timeoutBudget = new TimeoutBudget(clock, timeout);
PrepareParams.Builder params = new PrepareParams.Builder().applicationId(applicationId)
.timeoutBudget(timeoutBudget)
.ignoreValidationErrors(!validate)
.vespaVersion(version.toString())
.isBootstrap(isBootstrap);
dockerImageRepository.ifPresent(params::dockerImageRepository);
athenzDomain.ifPresent(params::athenzDomain);
Optional<ApplicationSet> activeApplicationSet = applicationRepository.getCurrentActiveApplicationSet(tenant, applicationId);
tenant.getSessionRepository().prepareLocalSession(session, logger, params.build(), activeApplicationSet,
tenant.getPath(), clock.instant());
this.prepared = true;
}
}
/** Activates this. If it is not already prepared, this will call prepare first. */
@Override
public void activate() {
if ( ! prepared)
prepare();
validateSessionStatus(session);
ApplicationId applicationId = session.getApplicationId();
try (ActionTimer timer = applicationRepository.timerFor(applicationId, "deployment.activateMillis")) {
TimeoutBudget timeoutBudget = new TimeoutBudget(clock, timeout);
if ( ! timeoutBudget.hasTimeLeft()) throw new RuntimeException("Timeout exceeded when trying to activate '" + applicationId + "'");
RemoteSession previousActiveSession;
CompletionWaiter waiter;
try (Lock lock = tenant.getApplicationRepo().lock(applicationId)) {
previousActiveSession = applicationRepository.getActiveSession(applicationId);
waiter = applicationRepository.activate(session, previousActiveSession, applicationId, force);
}
catch (RuntimeException e) {
throw e;
}
catch (Exception e) {
throw new InternalServerException("Error when activating '" + applicationId + "'", e);
}
waiter.awaitCompletion(timeoutBudget.timeLeft());
log.log(Level.INFO, session.logPre() + "Session " + session.getSessionId() + " activated successfully using " +
hostProvisioner.map(provisioner -> provisioner.getClass().getSimpleName()).orElse("no host provisioner") +
". Config generation " + session.getMetaData().getGeneration() +
(previousActiveSession != null ? ". Based on session " + previousActiveSession.getSessionId() : "") +
". File references: " + applicationRepository.getFileReferences(applicationId));
}
}
/**
* Request a restart of services of this application on hosts matching the filter.
* This is sometimes needed after activation, but can also be requested without
* doing prepare and activate in the same session.
*/
@Override
public void restart(HostFilter filter) {
hostProvisioner.get().restart(session.getApplicationId(), filter);
}
/** Exposes the session of this for testing only */
public LocalSession session() { return session; }
private void validateSessionStatus(LocalSession localSession) {
long sessionId = localSession.getSessionId();
if (Session.Status.NEW.equals(localSession.getStatus())) {
throw new IllegalStateException(localSession.logPre() + "Session " + sessionId + " is not prepared");
} else if (Session.Status.ACTIVATE.equals(localSession.getStatus())) {
throw new IllegalStateException(localSession.logPre() + "Session " + sessionId + " is already active");
}
}
}
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