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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.maintenance;
import com.yahoo.component.Version;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.Node;
import com.yahoo.vespa.hosted.controller.api.integration.zone.ZoneId;
import com.yahoo.vespa.hosted.controller.application.SystemApplication;
import com.yahoo.vespa.hosted.controller.versions.VespaVersion;
import com.yahoo.yolean.Exceptions;
import java.time.Duration;
import java.util.Comparator;
import java.util.List;
import java.util.Optional;
import java.util.function.Function;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Maintenance job which upgrades system applications.
*
* @author mpolden
*/
public class SystemUpgrader extends Maintainer {
private static final Logger log = Logger.getLogger(SystemUpgrader.class.getName());
public SystemUpgrader(Controller controller, Duration interval, JobControl jobControl) {
super(controller, interval, jobControl);
}
@Override
protected void maintain() {
Optional<Version> target = targetVersion();
if (!target.isPresent()) {
return;
}
deploy(SystemApplication.all(), target.get());
}
/** Deploy a list of system applications on given version */
private void deploy(List<SystemApplication> applications, Version target) {
for (List<ZoneId> zones : controller().zoneRegistry().upgradePolicy().asList()) {
for (SystemApplication application : applications) {
if (!deploy(zones, application, target) && application.upgradeInOrder()) {
return;
}
}
}
}
/** Deploy application on given version. Returns true when all allocated nodes are on requested version */
private boolean deploy(List<ZoneId> zones, SystemApplication application, Version target) {
boolean completed = true;
for (ZoneId zone : zones) {
if (!wantedVersion(zone, application.id(), target).equals(target)) {
log.info(String.format("Deploying %s version %s in %s", application.id(), target, zone));
controller().applications().deploy(application, zone, target);
}
completed = completed && currentVersion(zone, application.id(), target).equals(target);
}
return completed;
}
private Version wantedVersion(ZoneId zone, ApplicationId application, Version defaultVersion) {
return minVersion(zone, application, Node::wantedVersion).orElse(defaultVersion);
}
private Version currentVersion(ZoneId zone, ApplicationId application, Version defaultVersion) {
return minVersion(zone, application, Node::currentVersion).orElse(defaultVersion);
}
private Optional<Version> minVersion(ZoneId zone, ApplicationId application, Function<Node, Version> versionField) {
try {
return controller().configServer()
.nodeRepository()
.listOperational(zone, application)
.stream()
.map(versionField)
.min(Comparator.naturalOrder());
} catch (Exception e) {
log.log(Level.WARNING, String.format("Failed to get version for %s in %s: %s", application, zone,
Exceptions.toMessageString(e)));
return Optional.empty();
}
}
/** Returns target version for the system */
private Optional<Version> targetVersion() {
return controller().versionStatus().controllerVersion()
.filter(vespaVersion -> !vespaVersion.isSystemVersion())
.map(VespaVersion::versionNumber);
}
}
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