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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.CloudAccount;
import com.yahoo.config.provision.HostEvent;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeList;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.node.Agent;
import com.yahoo.vespa.hosted.provision.provisioning.HostProvisioner;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.logging.Logger;
import java.util.stream.Collectors;
/**
* Retire and deprovision hosts that are scheduled for maintenance by the cloud provider.
*
* Only applies to dynamically provisioned zones, where a replacement host will be provisioned.
*
* @author mpolden
*/
public class HostRetirer extends NodeRepositoryMaintainer {
private static final Logger LOG = Logger.getLogger(HostRetirer.class.getName());
private final HostProvisioner hostProvisioner;
public HostRetirer(NodeRepository nodeRepository, Duration interval, Metric metric, HostProvisioner hostProvisioner) {
super(nodeRepository, interval, metric);
this.hostProvisioner = Objects.requireNonNull(hostProvisioner);
}
@Override
protected double maintain() {
if (!nodeRepository().zone().cloud().dynamicProvisioning()) return 1.0;
NodeList candidates = nodeRepository().nodes().list()
.parents()
.not().deprovisioning();
List<CloudAccount> cloudAccounts = candidates.stream()
.map(Node::cloudAccount)
.filter(cloudAccount -> !cloudAccount.isUnspecified())
.distinct()
.toList();
Map<String, List<HostEvent>> eventsByHostId = hostProvisioner.hostEventsIn(cloudAccounts).stream()
.collect(Collectors.groupingBy(HostEvent::hostId));
Instant now = nodeRepository().clock().instant();
for (var host : candidates) {
List<HostEvent> events = eventsByHostId.get(host.id());
if (events == null || events.isEmpty()) continue;
LOG.info("Deprovisioning " + host + " affected by maintenance event" + (events.size() > 1 ? "s" : "") + ": " + events);
nodeRepository().nodes().deprovision(host.hostname(), Agent.system, now);
}
return 1.0;
}
}
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