com.alltobid.quotabid.BidClientHandler.java Source code

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Here is the source code for com.alltobid.quotabid.BidClientHandler.java

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 com.alltobid.quotabid;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

@Sharable
public class BidClientHandler extends ChannelInboundHandlerAdapter {
    private final Logger logger = LoggerFactory.getLogger(BidClientHandler.class);
    private final List<BidClientHandlerListener> listeners = new ArrayList<BidClientHandlerListener>();
    private final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        Date receiveTime = Calendar.getInstance().getTime();

        String[] msgParts = ((String) msg).split(",");

        Date timestamp;
        try {
            timestamp = sdf.parse(msgParts[0]);
        } catch (ParseException ex) {
            logger.error("Parse timestamp failed.", ex);
            timestamp = null;
        }

        Message message = new Message(timestamp, Integer.parseInt(msgParts[1]), msgParts[2]);

        ReceivedMessage receivedMessage = new ReceivedMessage(message, receiveTime);
        onMessageReceived(receivedMessage);
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        Date receiveTime = Calendar.getInstance().getTime();
        Message message = null;

        ReceivedMessage receivedMessage = new ReceivedMessage(message, receiveTime);
        onMessageReceived(receivedMessage);
    }

    private void onMessageReceived(ReceivedMessage receivedMessage) {
        for (BidClientHandlerListener listener : listeners)
            listener.messageReceived(receivedMessage);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        logger.debug("BidClientHandler caught an exception.", cause);
        ctx.close();
    }

    public void addListener(BidClientHandlerListener listener) {
        listeners.add(listener);
    }

    public void removeListener(BidClientHandlerListener listener) {
        listeners.remove(listener);
    }
}