/*
* 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;
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.transport.TransportRequestOptions;
import org.elasticsearch.transport.TransportService;
/**
* A generic proxy that will execute the given action against a specific node.
*/
public class TransportActionNodeProxy<Request extends ActionRequest, Response extends ActionResponse> extends AbstractComponent {
private final TransportService transportService;
private final GenericAction<Request, Response> action;
private final TransportRequestOptions transportOptions;
public TransportActionNodeProxy(Settings settings, GenericAction<Request, Response> action, TransportService transportService) {
super(settings);
this.action = action;
this.transportService = transportService;
this.transportOptions = action.transportOptions(settings);
}
public void execute(final DiscoveryNode node, final Request request, final ActionListener<Response> listener) {
ActionRequestValidationException validationException = request.validate();
if (validationException != null) {
listener.onFailure(validationException);
return;
}
transportService.sendRequest(node, action.name(), request, transportOptions,
new ActionListenerResponseHandler<>(listener, action::newResponse));
}
}