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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.config.server.maintenance;
import com.google.inject.Inject;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.component.AbstractComponent;
import com.yahoo.concurrent.maintenance.Maintainer;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.config.server.ApplicationRepository;
import com.yahoo.vespa.config.server.ConfigServerBootstrap;
import com.yahoo.vespa.config.server.application.ConfigConvergenceChecker;
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;
/**
* 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. {@link ConfigServerBootstrap} is injected into this class, so
* no maintainers will run until bootstrapping is done
*
* @author hmusum
*/
public class ConfigServerMaintenance extends AbstractComponent {
private final List<Maintainer> maintainers = new CopyOnWriteArrayList<>();
@Inject
public ConfigServerMaintenance(ConfigServerBootstrap configServerBootstrap,
ConfigserverConfig configserverConfig,
ApplicationRepository applicationRepository,
Curator curator,
FlagSource flagSource,
ConfigConvergenceChecker convergence) {
DefaultTimes defaults = new DefaultTimes(configserverConfig);
maintainers.add(new TenantsMaintainer(applicationRepository, curator, flagSource, defaults.defaultInterval, Clock.systemUTC()));
maintainers.add(new FileDistributionMaintainer(applicationRepository, curator, defaults.defaultInterval, flagSource));
maintainers.add(new SessionsMaintainer(applicationRepository, curator, Duration.ofSeconds(30), flagSource));
maintainers.add(new ApplicationPackageMaintainer(applicationRepository, curator, Duration.ofSeconds(30), flagSource));
maintainers.add(new ReindexingMaintainer(applicationRepository, curator, flagSource, Duration.ofMinutes(3), convergence, Clock.systemUTC()));
}
@Override
public void deconstruct() {
maintainers.forEach(Maintainer::shutdown);
maintainers.forEach(Maintainer::close);
}
/*
* Default values from config. If one of the values needs to be changed, add the value to
* configserver-config.xml in the config server application directory and restart the config server
*/
private static class DefaultTimes {
private final Duration defaultInterval;
DefaultTimes(ConfigserverConfig configserverConfig) {
this.defaultInterval = Duration.ofMinutes(configserverConfig.maintainerIntervalMinutes());
}
}
}
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