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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.maintenance;
import com.yahoo.concurrent.maintenance.Maintainer;
import com.yahoo.vespa.config.server.ApplicationRepository;
import com.yahoo.vespa.config.server.application.ConfigConvergenceChecker;
import com.yahoo.vespa.config.server.filedistribution.FileDirectory;
import com.yahoo.vespa.curator.Curator;
import com.yahoo.vespa.flags.FlagSource;
import java.time.Clock;
import java.time.Duration;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import static com.yahoo.vespa.config.server.filedistribution.FileDistributionUtil.getOtherConfigServersInCluster;
/**
* Maintenance jobs of the config server.
* Each maintenance job is a singleton instance of its implementing class, created and owned by this,
* and running its own dedicated thread.
*
* @author hmusum
*/
public class ConfigServerMaintenance {
private final List<Maintainer> maintainers = new CopyOnWriteArrayList<>();
private final ApplicationRepository applicationRepository;
private final Curator curator;
private final FlagSource flagSource;
private final ConfigConvergenceChecker convergenceChecker;
private final FileDirectory fileDirectory;
private final Duration interval;
public ConfigServerMaintenance(ApplicationRepository applicationRepository, FileDirectory fileDirectory) {
this.applicationRepository = applicationRepository;
this.curator = applicationRepository.tenantRepository().getCurator();
this.flagSource = applicationRepository.flagSource();
this.convergenceChecker = applicationRepository.configConvergenceChecker();
this.fileDirectory = fileDirectory;
this.interval = Duration.ofMinutes(applicationRepository.configserverConfig().maintainerIntervalMinutes());
}
public void startBeforeBootstrap() {
List<String> otherConfigServersInCluster = getOtherConfigServersInCluster(applicationRepository.configserverConfig());
if ( ! otherConfigServersInCluster.isEmpty())
maintainers.add(new ApplicationPackageMaintainer(applicationRepository, curator, Duration.ofSeconds(30),
flagSource, otherConfigServersInCluster));
maintainers.add(new TenantsMaintainer(applicationRepository, curator, flagSource, interval, Clock.systemUTC()));
}
public void startAfterBootstrap() {
maintainers.add(new FileDistributionMaintainer(applicationRepository,
curator,
interval,
flagSource,
fileDirectory));
maintainers.add(new SessionsMaintainer(applicationRepository, curator, Duration.ofSeconds(30), flagSource));
maintainers.add(new ReindexingMaintainer(applicationRepository, curator, flagSource,
Duration.ofMinutes(3), convergenceChecker, Clock.systemUTC()));
}
public void shutdown() {
maintainers.forEach(Maintainer::shutdown);
maintainers.forEach(Maintainer::awaitShutdown);
}
public List<Maintainer> maintainers() { return List.copyOf(maintainers); }
}
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