org.elasticsearch.action.TransportActionNodeProxy Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.action;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.action.support.PlainActionFuture;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.BaseTransportResponseHandler;
import org.elasticsearch.transport.TransportException;
import org.elasticsearch.transport.TransportRequestOptions;
import org.elasticsearch.transport.TransportService;
import static org.elasticsearch.action.support.PlainActionFuture.newFuture;
/**
* A generic proxy that will execute the given action against a specific node.
*/
public class TransportActionNodeProxy extends AbstractComponent {
protected final TransportService transportService;
private final GenericAction action;
private final TransportRequestOptions transportOptions;
@Inject
public TransportActionNodeProxy(Settings settings, GenericAction action, TransportService transportService) {
super(settings);
this.action = action;
this.transportService = transportService;
this.transportOptions = action.transportOptions(settings);
}
public ActionFuture execute(DiscoveryNode node, Request request) throws ElasticSearchException {
PlainActionFuture future = newFuture();
request.listenerThreaded(false);
execute(node, request, future);
return future;
}
public void execute(DiscoveryNode node, final Request request, final ActionListener listener) {
transportService.sendRequest(node, action.name(), request, transportOptions, new BaseTransportResponseHandler() {
@Override
public Response newInstance() {
return action.newResponse();
}
@Override
public String executor() {
if (request.listenerThreaded()) {
return ThreadPool.Names.GENERIC;
}
return ThreadPool.Names.SAME;
}
@Override
public void handleResponse(Response response) {
listener.onResponse(response);
}
@Override
public void handleException(TransportException exp) {
listener.onFailure(exp);
}
});
}
}