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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.model.application.validation.change;
import com.yahoo.config.model.api.ConfigChangeAction;
import com.yahoo.config.model.deploy.DeployState;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.HostSpec;
import com.yahoo.config.provision.NodeResources;
import com.yahoo.vespa.model.VespaModel;
import com.yahoo.vespa.model.container.ApplicationContainerCluster;
import com.yahoo.vespa.model.content.cluster.ContentCluster;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
/**
* Emits restart change actions for clusters where the node resources are changed in a way
* which requires a "restart" (container recreation) to take effect.
* Nodes will restart on their own on this condition, but we want to emit restart actions to
* defer applying new config until restart.
*
* @author bratseth
*/
public class NodeResourceChangeValidator implements ChangeValidator {
@Override
public List<ConfigChangeAction> validate(VespaModel current, VespaModel next, DeployState deployState) {
var restartActions = new ArrayList<ConfigChangeAction>();
for (ClusterSpec.Id clusterId : current.allClusters()) {
Optional<NodeResources> currentResources = resourcesOf(clusterId, current);
Optional<NodeResources> nextResources = resourcesOf(clusterId, next);
if (currentResources.isEmpty() || nextResources.isEmpty()) continue; // new or removed cluster
if ( changeRequiresRestart(currentResources.get(), nextResources.get()))
restartActions.addAll(createRestartActionsFor(clusterId, current));
}
return restartActions;
}
private boolean changeRequiresRestart(NodeResources currentResources, NodeResources nextResources) {
return currentResources.memoryGb() != nextResources.memoryGb();
}
private Optional<NodeResources> resourcesOf(ClusterSpec.Id clusterId, VespaModel model) {
return model.allocatedHosts().getHosts().stream().filter(host -> host.membership().isPresent())
.filter(host -> host.membership().get().cluster().id().equals(clusterId))
.findFirst()
.map(HostSpec::advertisedResources);
}
private List<ConfigChangeAction> createRestartActionsFor(ClusterSpec.Id clusterId, VespaModel model) {
ApplicationContainerCluster containerCluster = model.getContainerClusters().get(clusterId.value());
if (containerCluster != null)
return createRestartActionsFor(containerCluster);
ContentCluster contentCluster = model.getContentClusters().get(clusterId.value());
if (contentCluster != null)
return createRestartActionsFor(contentCluster);
return List.of();
}
private List<ConfigChangeAction> createRestartActionsFor(ApplicationContainerCluster cluster) {
return cluster.getContainers().stream()
.map(container -> new VespaRestartAction(cluster.id(),
"Node resource change",
container.getServiceInfo(),
false))
.collect(Collectors.toList());
}
private List<ConfigChangeAction> createRestartActionsFor(ContentCluster cluster) {
return cluster.getSearch().getSearchNodes().stream()
.map(node -> new VespaRestartAction(cluster.id(),
"Node resource change",
node.getServiceInfo(),
false))
.collect(Collectors.toList());
}
}
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