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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.restapi;
import com.yahoo.config.provision.ClusterResources;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.Slime;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeList;
import com.yahoo.vespa.hosted.provision.applications.Application;
import com.yahoo.vespa.hosted.provision.applications.Cluster;
import com.yahoo.vespa.hosted.provision.applications.ScalingEvent;
import com.yahoo.vespa.hosted.provision.autoscale.AllocatableClusterResources;
import com.yahoo.vespa.hosted.provision.autoscale.ClusterTimeseries;
import com.yahoo.vespa.hosted.provision.autoscale.MetricsDb;
import com.yahoo.vespa.hosted.provision.autoscale.Resource;
import java.net.URI;
import java.time.Duration;
import java.util.Collection;
import java.util.List;
/**
* Serializes application information for nodes/v2/application responses
*/
public class ApplicationSerializer {
public static Slime toSlime(Application application, List<Node> applicationNodes, MetricsDb metricsDb, URI applicationUri) {
Slime slime = new Slime();
toSlime(application, applicationNodes, metricsDb, slime.setObject(), applicationUri);
return slime;
}
private static void toSlime(Application application,
List<Node> applicationNodes,
MetricsDb metricsDb,
Cursor object,
URI applicationUri) {
object.setString("url", applicationUri.toString());
object.setString("id", application.id().toFullString());
clustersToSlime(application.clusters().values(), applicationNodes, metricsDb, object.setObject("clusters"));
}
private static void clustersToSlime(Collection<Cluster> clusters,
List<Node> applicationNodes,
MetricsDb metricsDb,
Cursor clustersObject) {
clusters.forEach(cluster -> toSlime(cluster, applicationNodes, metricsDb, clustersObject));
}
private static void toSlime(Cluster cluster,
List<Node> applicationNodes,
MetricsDb metricsDb,
Cursor clustersObject) {
NodeList nodes = NodeList.copyOf(applicationNodes).not().retired().cluster(cluster.id());
if (nodes.isEmpty()) return;
ClusterResources currentResources = nodes.toResources();
Cursor clusterObject = clustersObject.setObject(cluster.id().value());
toSlime(cluster.minResources(), clusterObject.setObject("min"));
toSlime(cluster.maxResources(), clusterObject.setObject("max"));
toSlime(currentResources, clusterObject.setObject("current"));
if (cluster.shouldSuggestResources(currentResources))
cluster.suggestedResources().ifPresent(suggested -> toSlime(suggested.resources(), clusterObject.setObject("suggested")));
cluster.targetResources().ifPresent(target -> toSlime(target, clusterObject.setObject("target")));
clusterUtilizationToSlime(cluster, NodeList.copyOf(applicationNodes), metricsDb, clusterObject.setObject("utilization"));
scalingEventsToSlime(cluster.scalingEvents(), clusterObject.setArray("scalingEvents"));
clusterObject.setString("autoscalingStatus", cluster.autoscalingStatus());
}
private static void toSlime(ClusterResources resources, Cursor clusterResourcesObject) {
clusterResourcesObject.setLong("nodes", resources.nodes());
clusterResourcesObject.setLong("groups", resources.groups());
NodeResourcesSerializer.toSlime(resources.nodeResources(), clusterResourcesObject.setObject("resources"));
}
private static void clusterUtilizationToSlime(Cluster cluster, NodeList nodes, MetricsDb metricsDb, Cursor utilizationObject) {
var timeseries = new ClusterTimeseries(Duration.ofHours(1), cluster, nodes, metricsDb);
utilizationObject.setDouble("cpu", timeseries.averageLoad(Resource.cpu));
utilizationObject.setDouble("memory", timeseries.averageLoad(Resource.memory));
utilizationObject.setDouble("disk", timeseries.averageLoad(Resource.disk));
}
private static void scalingEventsToSlime(List<ScalingEvent> scalingEvents, Cursor scalingEventsArray) {
for (ScalingEvent scalingEvent : scalingEvents) {
Cursor scalingEventObject = scalingEventsArray.addObject();
toSlime(scalingEvent.from(), scalingEventObject.setObject("from"));
toSlime(scalingEvent.to(), scalingEventObject.setObject("to"));
scalingEventObject.setLong("at", scalingEvent.at().toEpochMilli());
}
}
}
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