ClusterNode.java

/*
 * Copyright (c) www.bugull.com
 * 
 * Licensed 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 net.tooan.ynpay.third.mongodb.lucene.cluster;

import net.tooan.ynpay.third.jfinal.log.Logger;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.nio.channels.SocketChannel;

/**
 * Presents a lucene node in clustering environment.
 *
 * @author Frank Wen(xbwen@hotmail.com)
 */
public class ClusterNode {

    private final static Logger logger = Logger.getLogger(ClusterNode.class);

    private String host;
    private int port;

    public ClusterNode(String host, int port) {
        this.host = host;
        this.port = port;
    }

    /**
     * Tansmit a message to this node.
     * <p>
     * This method should be synchronized, because there must
     * be only one thread operating on the ClientNode at the time.
     * </p>
     *
     * @param message
     */
    public synchronized void transmitMessage(ClusterMessage message) {
        //connect
        SocketChannel channel = null;
        try {
            channel = SocketChannel.open();
            channel.configureBlocking(false);
            SocketAddress address = new InetSocketAddress(host, port);
            if (!channel.connect(address)) {
                while (!channel.finishConnect()) {
                    //poll until it's connected
                }
                ;
            }
            //write data
            channel.write(BufferUtil.toBuffer(message));
        } catch (IOException ex) {
            logger.error("Error when transmit message to host: " + host + ", port: " + port, ex);
        } finally {
            //close
            if (channel != null) {
                try {
                    channel.close();
                } catch (IOException ex) {
                    logger.error("Error when close channel host: " + host + ", port: " + port, ex);
                }
            }
        }
    }

}