/*
* 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.index.reindex;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.FailedNodeException;
import org.elasticsearch.action.TaskOperationFailure;
import org.elasticsearch.action.admin.cluster.node.tasks.list.ListTasksResponse;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.tasks.TransportTasksAction;
import org.elasticsearch.client.Client;
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.tasks.TaskId;
import org.elasticsearch.tasks.TaskInfo;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
public class TransportRethrottleAction extends TransportTasksAction<BulkByScrollTask, RethrottleRequest, ListTasksResponse, TaskInfo> {
private final Client client;
@Inject
public TransportRethrottleAction(Settings settings, ThreadPool threadPool, ClusterService clusterService,
TransportService transportService, ActionFilters actionFilters, IndexNameExpressionResolver indexNameExpressionResolver,
Client client) {
super(settings, RethrottleAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver,
RethrottleRequest::new, ListTasksResponse::new, ThreadPool.Names.MANAGEMENT);
this.client = client;
}
@Override
protected void taskOperation(RethrottleRequest request, BulkByScrollTask task, ActionListener<TaskInfo> listener) {
rethrottle(logger, clusterService.localNode().getId(), client, task, request.getRequestsPerSecond(), listener);
}
static void rethrottle(Logger logger, String localNodeId, Client client, BulkByScrollTask task, float newRequestsPerSecond,
ActionListener<TaskInfo> listener) {
int runningSubTasks = task.runningSliceSubTasks();
if (runningSubTasks == 0) {
logger.debug("rethrottling local task [{}] to [{}] requests per second", task.getId(), newRequestsPerSecond);
task.rethrottle(newRequestsPerSecond);
listener.onResponse(task.taskInfo(localNodeId, true));
return;
}
RethrottleRequest subRequest = new RethrottleRequest();
subRequest.setRequestsPerSecond(newRequestsPerSecond / runningSubTasks);
subRequest.setParentTaskId(new TaskId(localNodeId, task.getId()));
logger.debug("rethrottling children of task [{}] to [{}] requests per second", task.getId(), subRequest.getRequestsPerSecond());
client.execute(RethrottleAction.INSTANCE, subRequest, ActionListener.wrap(r -> {
r.rethrowFailures("Rethrottle");
listener.onResponse(task.getInfoGivenSliceInfo(localNodeId, r.getTasks()));
}, listener::onFailure));
}
@Override
protected TaskInfo readTaskResponse(StreamInput in) throws IOException {
return new TaskInfo(in);
}
@Override
protected ListTasksResponse newResponse(RethrottleRequest request, List<TaskInfo> tasks,
List<TaskOperationFailure> taskOperationFailures, List<FailedNodeException> failedNodeExceptions) {
return new ListTasksResponse(tasks, taskOperationFailures, failedNodeExceptions);
}
@Override
protected boolean accumulateExceptions() {
return true;
}
}