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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.maintenance;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Deployer;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.flags.BooleanFlag;
import com.yahoo.vespa.flags.FetchVector;
import com.yahoo.vespa.flags.FlagSource;
import com.yahoo.vespa.flags.PermanentFlags;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeList;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.yolean.Exceptions;
import java.time.Duration;
import java.util.Map;
import static java.util.logging.Level.INFO;
import static java.util.stream.Collectors.toMap;
/**
* The application maintainer regularly redeploys all applications to make sure the node repo and application
* model is in sync and to trigger background node allocation changes such as allocation optimizations and
* flavor retirement.
*
* @author bratseth
*/
public class PeriodicApplicationMaintainer extends ApplicationMaintainer {
private final Duration minTimeBetweenRedeployments;
private final FlagSource flagSource;
PeriodicApplicationMaintainer(Deployer deployer, Metric metric, NodeRepository nodeRepository,
Duration interval, Duration minTimeBetweenRedeployments, FlagSource flagSource) {
super(deployer, metric, nodeRepository, interval);
this.minTimeBetweenRedeployments = minTimeBetweenRedeployments;
this.flagSource = flagSource;
}
@Override
protected boolean canDeployNow(ApplicationId application) {
try {
return deployer().deployTime(application)
.map(lastDeployTime -> lastDeployTime.isBefore(nodeRepository().clock().instant().minus(minTimeBetweenRedeployments))
|| deployer().readiedReindexingAfter(application, lastDeployTime))
.orElse(false);
}
catch (Exception e) {
log.log(INFO, () -> "Failed finding last deploy time or reindexing status for " + application + Exceptions.toMessageString(e));
throw e;
}
}
@Override
protected Map<ApplicationId, String> applicationsNeedingMaintenance() {
if (deployer().bootstrapping()) return Map.of();
return nodesNeedingMaintenance().stream()
.map(node -> node.allocation().get().owner())
.distinct()
.filter(this::shouldMaintain)
.filter(this::canDeployNow)
.collect(toMap(applicationId -> applicationId, applicationId -> "current deployment being too old"));
}
private boolean shouldMaintain(ApplicationId id) {
BooleanFlag skipMaintenanceDeployment = PermanentFlags.SKIP_MAINTENANCE_DEPLOYMENT.bindTo(flagSource)
.with(FetchVector.Dimension.INSTANCE_ID, id.serializedForm());
return ! skipMaintenanceDeployment.value();
}
protected NodeList nodesNeedingMaintenance() {
return nodeRepository().nodes().list(Node.State.active);
}
}
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