org.elasticsearch.action.support.HandledTransportAction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.apache.servicemix.bundles.elasticsearch
Show all versions of org.apache.servicemix.bundles.elasticsearch
This OSGi bundle wraps ${pkgArtifactId} ${pkgVersion} jar file.
/*
* 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.support;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionRequest;
import org.elasticsearch.action.ActionResponse;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.BaseTransportRequestHandler;
import org.elasticsearch.transport.TransportChannel;
import org.elasticsearch.transport.TransportService;
/**
* A TransportAction that self registers a handler into the transport service
*/
public abstract class HandledTransportAction extends TransportAction{
/**
* Sub classes implement this call to get new instance of a Request object
* @return Request
*/
public abstract Request newRequestInstance();
protected HandledTransportAction(Settings settings, String actionName, ThreadPool threadPool, TransportService transportService, ActionFilters actionFilters){
super(settings, actionName, threadPool, actionFilters);
transportService.registerHandler(actionName, new TransportHandler() {
@Override
public Request newInstance(){
return newRequestInstance();
}
});
}
private abstract class TransportHandler extends BaseTransportRequestHandler{
/**
* Call to get an instance of type Request
* @return Request
*/
public abstract Request newInstance();
@Override
public final void messageReceived(final Request request, final TransportChannel channel) throws Exception {
// no need to use threaded listener, since we just send a response
request.listenerThreaded(false);
execute(request, new ActionListener() {
@Override
public void onResponse(Response response) {
try {
channel.sendResponse(response);
} catch (Throwable e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(e);
} catch (Exception e1) {
logger.warn("Failed to send error response for action [{}] and request [{}]",
actionName, request, e1);
}
}
});
}
@Override
public String executor() {
return ThreadPool.Names.SAME;
}
}
}