/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.cluster.action.index;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.io.stream.VoidStreamable;
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;
import org.elasticsearch.transport.VoidTransportResponseHandler;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* @author kimchy (Shay Banon)
*/
public class NodeIndexCreatedAction extends AbstractComponent {
private final ThreadPool threadPool;
private final TransportService transportService;
private final ClusterService clusterService;
private final List<Listener> listeners = new CopyOnWriteArrayList<Listener>();
@Inject public NodeIndexCreatedAction(Settings settings, ThreadPool threadPool, TransportService transportService, ClusterService clusterService) {
super(settings);
this.threadPool = threadPool;
this.transportService = transportService;
this.clusterService = clusterService;
transportService.registerHandler(NodeIndexCreatedTransportHandler.ACTION, new NodeIndexCreatedTransportHandler());
}
public void add(Listener listener) {
listeners.add(listener);
}
public void remove(Listener listener) {
listeners.remove(listener);
}
public void nodeIndexCreated(final String index, final String nodeId) throws ElasticSearchException {
DiscoveryNodes nodes = clusterService.state().nodes();
if (nodes.localNodeMaster()) {
threadPool.cached().execute(new Runnable() {
@Override public void run() {
innerNodeIndexCreated(index, nodeId);
}
});
} else {
transportService.sendRequest(clusterService.state().nodes().masterNode(),
NodeIndexCreatedTransportHandler.ACTION, new NodeIndexCreatedMessage(index, nodeId), VoidTransportResponseHandler.INSTANCE_SAME);
}
}
private void innerNodeIndexCreated(String index, String nodeId) {
for (Listener listener : listeners) {
listener.onNodeIndexCreated(index, nodeId);
}
}
public static interface Listener {
void onNodeIndexCreated(String index, String nodeId);
}
private class NodeIndexCreatedTransportHandler extends BaseTransportRequestHandler<NodeIndexCreatedMessage> {
static final String ACTION = "cluster/nodeIndexCreated";
@Override public NodeIndexCreatedMessage newInstance() {
return new NodeIndexCreatedMessage();
}
@Override public void messageReceived(NodeIndexCreatedMessage message, TransportChannel channel) throws Exception {
innerNodeIndexCreated(message.index, message.nodeId);
channel.sendResponse(VoidStreamable.INSTANCE);
}
@Override public String executor() {
return ThreadPool.Names.SAME;
}
}
private static class NodeIndexCreatedMessage implements Streamable {
String index;
String nodeId;
private NodeIndexCreatedMessage() {
}
private NodeIndexCreatedMessage(String index, String nodeId) {
this.index = index;
this.nodeId = nodeId;
}
@Override public void writeTo(StreamOutput out) throws IOException {
out.writeUTF(index);
out.writeUTF(nodeId);
}
@Override public void readFrom(StreamInput in) throws IOException {
index = in.readUTF();
nodeId = in.readUTF();
}
}
}