com.papteco.client.netty.QuartzMailBackupClientHandler.java Source code

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Here is the source code for com.papteco.client.netty.QuartzMailBackupClientHandler.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.papteco.client.netty;

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

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.UnknownHostException;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

import com.papteco.client.action.FileActionUtils;
import com.papteco.client.ui.EnvConstant;
import com.papteco.web.beans.ClientRequestBean;

public class QuartzMailBackupClientHandler extends ChannelInboundHandlerAdapter {

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

    private ClientRequestBean req = new ClientRequestBean(NettyConstant.MAILBKP_INI_ACTION_TYPE);

    /**
     * Creates a client-side handler.
     * 
     * @throws UnknownHostException
     */
    public QuartzMailBackupClientHandler() throws UnknownHostException {
        req.setReqUser(EnvConstant.LOGIN_USER);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        // TODO Auto-generated method stub
        ctx.close();
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        // Send the first message if this handler is a client-side handler.
        ctx.writeAndFlush(req);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        // Echo back the received object to the server.
        ClientRequestBean bean = (ClientRequestBean) msg;
        bean.setActionType(NettyConstant.MAILBKP_UP_ACTION_TYPE);
        String[] lastMailFile = FileActionUtils.getLastModifiedFile(EnvConstant.LCL_MAILFILE_PATH);
        if (lastMailFile != null && StringUtils.isNotEmpty(lastMailFile[1])) {
            if (bean.getTimestamp() != null && Long.valueOf(lastMailFile[1]) <= Long.valueOf(bean.getTimestamp())) {
                // System.out.println("No Mail-File's update.");
            } else {
                File file = new File(lastMailFile[0]);
                InputStream fis = new BufferedInputStream(new FileInputStream(file));
                byte[] buffer = new byte[fis.available()];
                fis.read(buffer);
                fis.close();
                bean.setPrjObj(buffer);
                bean.setTimestamp(lastMailFile[1]);
                bean.setMailfileSuffix(lastMailFile[2]);
            }
        }
        ctx.write(bean);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        logger.info("Unexpected exception from downstream.");
        ctx.close();
    }
}