org.elasticsearch.xpack.core.action.TransportXPackUsageAction Maven / Gradle / Ivy
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0; you may not use this file except in compliance with the Elastic License
* 2.0.
*/
package org.elasticsearch.xpack.core.action;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionRunnable;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeAction;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.protocol.xpack.XPackUsageRequest;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import org.elasticsearch.transport.Transports;
import org.elasticsearch.xpack.core.XPackFeatureSet;
import org.elasticsearch.xpack.core.XPackFeatureSet.Usage;
import org.elasticsearch.xpack.core.common.IteratingActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReferenceArray;
import java.util.function.BiConsumer;
public class TransportXPackUsageAction extends TransportMasterNodeAction {
private final List featureSets;
@Inject
public TransportXPackUsageAction(ThreadPool threadPool, TransportService transportService,
ClusterService clusterService, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver, Set featureSets) {
super(XPackUsageAction.NAME, transportService, clusterService, threadPool, actionFilters, XPackUsageRequest::new,
indexNameExpressionResolver, XPackUsageResponse::new, ThreadPool.Names.MANAGEMENT);
this.featureSets = Collections.unmodifiableList(new ArrayList<>(featureSets));
}
@Override
protected void masterOperation(XPackUsageRequest request, ClusterState state, ActionListener listener) {
final ActionListener> usageActionListener = new ActionListener>() {
@Override
public void onResponse(List usages) {
listener.onResponse(new XPackUsageResponse(usages));
}
@Override
public void onFailure(Exception e) {
listener.onFailure(e);
}
};
final AtomicReferenceArray featureSetUsages = new AtomicReferenceArray<>(featureSets.size());
final AtomicInteger position = new AtomicInteger(0);
final BiConsumer>> consumer = (featureSet, iteratingListener) -> {
assert Transports.assertNotTransportThread("calculating usage can be more expensive than we allow on transport threads");
featureSet.usage(new ActionListener() {
@Override
public void onResponse(Usage usage) {
featureSetUsages.set(position.getAndIncrement(), usage);
// the value sent back doesn't matter since our predicate keeps iterating
ActionRunnable invokeListener = ActionRunnable.supply(iteratingListener, Collections::emptyList);
threadPool.executor(ThreadPool.Names.MANAGEMENT).execute(invokeListener);
}
@Override
public void onFailure(Exception e) {
iteratingListener.onFailure(e);
}
});
};
IteratingActionListener, XPackFeatureSet> iteratingActionListener =
new IteratingActionListener<>(usageActionListener, consumer, featureSets,
threadPool.getThreadContext(), (ignore) -> {
final List usageList = new ArrayList<>(featureSetUsages.length());
for (int i = 0; i < featureSetUsages.length(); i++) {
usageList.add(featureSetUsages.get(i));
}
return usageList;
}, (ignore) -> true);
iteratingActionListener.run();
}
@Override
protected ClusterBlockException checkBlock(XPackUsageRequest request, ClusterState state) {
return null;
}
}