org.elasticsearch.action.admin.cluster.tasks.TransportPendingClusterTasksAction Maven / Gradle / Ivy
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Elasticsearch subproject :server
/*
* 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 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.action.admin.cluster.tasks;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeReadAction;
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.cluster.service.PendingClusterTask;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.List;
public class TransportPendingClusterTasksAction extends TransportMasterNodeReadAction<
PendingClusterTasksRequest,
PendingClusterTasksResponse> {
private static final Logger logger = LogManager.getLogger(TransportPendingClusterTasksAction.class);
private final ClusterService clusterService;
@Inject
public TransportPendingClusterTasksAction(
TransportService transportService,
ClusterService clusterService,
ThreadPool threadPool,
ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver
) {
super(
PendingClusterTasksAction.NAME,
transportService,
clusterService,
threadPool,
actionFilters,
PendingClusterTasksRequest::new,
indexNameExpressionResolver,
PendingClusterTasksResponse::new,
ThreadPool.Names.SAME
);
this.clusterService = clusterService;
}
@Override
protected ClusterBlockException checkBlock(PendingClusterTasksRequest request, ClusterState state) {
return null;
}
@Override
protected void masterOperation(
Task task,
PendingClusterTasksRequest request,
ClusterState state,
ActionListener listener
) {
logger.trace("fetching pending tasks from cluster service");
final List pendingTasks = clusterService.getMasterService().pendingTasks();
logger.trace("done fetching pending tasks from cluster service");
listener.onResponse(new PendingClusterTasksResponse(pendingTasks));
}
}