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* 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
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* KIND, either express or implied. See the License for the
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package org.elasticsearch.index.reindex;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.tasks.TaskId;
import java.io.IOException;
import java.util.function.Supplier;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.rest.action.admin.cluster.RestListTasksAction.listTasksResponseListener;
public class RestRethrottleAction extends BaseRestHandler {
private final Supplier<DiscoveryNodes> nodesInCluster;
public RestRethrottleAction(Settings settings, RestController controller, Supplier<DiscoveryNodes> nodesInCluster) {
super(settings);
this.nodesInCluster = nodesInCluster;
controller.registerHandler(POST, "/_update_by_query/{taskId}/_rethrottle", this);
controller.registerHandler(POST, "/_delete_by_query/{taskId}/_rethrottle", this);
controller.registerHandler(POST, "/_reindex/{taskId}/_rethrottle", this);
}
@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
RethrottleRequest internalRequest = new RethrottleRequest();
internalRequest.setTaskId(new TaskId(request.param("taskId")));
Float requestsPerSecond = AbstractBaseReindexRestHandler.parseRequestsPerSecond(request);
if (requestsPerSecond == null) {
throw new IllegalArgumentException("requests_per_second is a required parameter");
}
internalRequest.setRequestsPerSecond(requestsPerSecond);
final String groupBy = request.param("group_by", "nodes");
return channel ->
client.execute(RethrottleAction.INSTANCE, internalRequest, listTasksResponseListener(nodesInCluster, groupBy, channel));
}
}