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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.controller.versions;
import com.google.common.collect.ImmutableMap;
import com.yahoo.component.Version;
import com.yahoo.config.provision.CloudName;
import com.yahoo.config.provision.zone.UpgradePolicy;
import com.yahoo.config.provision.zone.ZoneApi;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.NodeFilter;
import com.yahoo.vespa.hosted.controller.application.SystemApplication;
import com.yahoo.vespa.hosted.controller.maintenance.OsUpgrader;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Information about OS versions in this system.
*
* @author mpolden
*/
public record OsVersionStatus(Map<OsVersion, List<NodeVersion>> versions) {
public static final OsVersionStatus empty = new OsVersionStatus(ImmutableMap.of());
/** Public for serialization purpose only. Use {@link OsVersionStatus#compute(Controller)} for an up-to-date status */
public OsVersionStatus(Map<OsVersion, List<NodeVersion>> versions) {
this.versions = ImmutableMap.copyOf(Objects.requireNonNull(versions, "versions must be non-null"));
}
/** Returns all node versions that exist in given cloud */
public List<NodeVersion> nodesIn(CloudName cloud) {
List<NodeVersion> nodeVersions = new ArrayList<>();
versions.forEach((osVersion, nodesOnVersion) -> {
if (osVersion.cloud().equals(cloud)) {
nodeVersions.addAll(nodesOnVersion);
}
});
return Collections.unmodifiableList(nodeVersions);
}
/** Returns versions that exist in given cloud */
public Set<Version> versionsIn(CloudName cloud) {
return versions.keySet().stream()
.filter(osVersion -> osVersion.cloud().equals(cloud))
.map(OsVersion::version)
.collect(Collectors.toUnmodifiableSet());
}
/** Compute the current OS versions in this system. This is expensive and should be called infrequently */
public static OsVersionStatus compute(Controller controller) {
Map<OsVersion, List<NodeVersion>> osVersions = new HashMap<>();
controller.os().targets().forEach(target -> osVersions.put(target.osVersion(), new ArrayList<>()));
for (var application : SystemApplication.all()) {
for (var zone : zonesToUpgrade(controller)) {
if (!application.shouldUpgradeOs()) continue;
Version targetOsVersion = controller.serviceRegistry().configServer().nodeRepository()
.targetVersionsOf(zone.getVirtualId())
.osVersion(application.nodeType())
.orElse(Version.emptyVersion);
for (var node : controller.serviceRegistry().configServer().nodeRepository().list(zone.getVirtualId(), NodeFilter.all().applications(application.id()))) {
if (!OsUpgrader.canUpgrade(node, true)) continue;
Optional<Instant> suspendedAt = node.suspendedSince();
NodeVersion nodeVersion = new NodeVersion(node.hostname(), zone.getVirtualId(), node.currentOsVersion(),
targetOsVersion, suspendedAt);
OsVersion osVersion = new OsVersion(nodeVersion.currentVersion(), zone.getCloudName());
osVersions.computeIfAbsent(osVersion, (k) -> new ArrayList<>())
.add(nodeVersion);
}
}
}
return new OsVersionStatus(osVersions);
}
private static List<ZoneApi> zonesToUpgrade(Controller controller) {
return controller.zoneRegistry().osUpgradePolicies().stream()
.flatMap(upgradePolicy -> upgradePolicy.steps().stream())
.map(UpgradePolicy.Step::zones)
.flatMap(Collection::stream)
.toList();
}
}
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