org.elasticsearch.action.admin.cluster.node.tasks.list.TransportListTasksAction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.action.admin.cluster.node.tasks.list;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.FailedNodeException;
import org.elasticsearch.action.TaskOperationFailure;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.tasks.TransportTasksAction;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.tasks.TaskInfo;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.function.Consumer;
import static org.elasticsearch.common.unit.TimeValue.timeValueSeconds;
/**
*
*/
public class TransportListTasksAction extends TransportTasksAction {
public static long waitForCompletionTimeout(TimeValue timeout) {
if (timeout == null) {
timeout = DEFAULT_WAIT_FOR_COMPLETION_TIMEOUT;
}
return System.nanoTime() + timeout.nanos();
}
private static final TimeValue DEFAULT_WAIT_FOR_COMPLETION_TIMEOUT = timeValueSeconds(30);
@Inject
public TransportListTasksAction(Settings settings, ThreadPool threadPool, ClusterService clusterService,
TransportService transportService, ActionFilters actionFilters, IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, ListTasksAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver,
ListTasksRequest::new, ListTasksResponse::new, ThreadPool.Names.MANAGEMENT);
}
@Override
protected ListTasksResponse newResponse(ListTasksRequest request, List tasks,
List taskOperationFailures, List failedNodeExceptions) {
return new ListTasksResponse(tasks, taskOperationFailures, failedNodeExceptions);
}
@Override
protected TaskInfo readTaskResponse(StreamInput in) throws IOException {
return new TaskInfo(in);
}
@Override
protected void taskOperation(ListTasksRequest request, Task task, ActionListener listener) {
listener.onResponse(task.taskInfo(clusterService.localNode().getId(), request.getDetailed()));
}
@Override
protected void processTasks(ListTasksRequest request, Consumer operation) {
if (request.getWaitForCompletion()) {
long timeoutNanos = waitForCompletionTimeout(request.getTimeout());
operation = operation.andThen(task -> {
if (task.getAction().startsWith(ListTasksAction.NAME)) {
// It doesn't make sense to wait for List Tasks and it can cause an infinite loop of the task waiting
// for itself or one of its child tasks
return;
}
taskManager.waitForTaskCompletion(task, timeoutNanos);
});
}
super.processTasks(request, operation);
}
@Override
protected boolean accumulateExceptions() {
return true;
}
}