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

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Here is the source code for com.papteco.client.netty.OpenFileServerHandler.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.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import org.apache.log4j.Logger;

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

/**
 * Handles both client-side and server-side handler depending on which
 * constructor was called.
 */
public class OpenFileServerHandler extends ChannelInboundHandlerAdapter {

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

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ClientRequestBean bean = (ClientRequestBean) msg;
        switch (bean.getActionType()) {
        case 'P':
            if (bean.getPrjObj() != null) {
                File file = new File(EnvConstant.LCL_STORING_PATH,
                        FileActionUtils.combine(bean.getqItem().getParam()));
                this.prepareFolderPath(file.getPath());
                logger.info("Writing local file: " + file.getPath());
                if (!file.exists()) {
                    file.createNewFile();

                    // if file already there no need to overwrite
                    byte[] buffer = (byte[]) bean.getPrjObj();
                    BufferedOutputStream buff = null;
                    buff = new BufferedOutputStream(new FileOutputStream(file));
                    buff.write(buffer);
                    buff.flush();
                    buff.close();
                }

            } else {
                logger.info("Cannot find the specific file.");
            }
            break;
        case 'O':
            QueueItem qItem = bean.getqItem();
            logger.info(qItem.getActionType() + ":" + qItem.getParam());
            File file = new File(EnvConstant.LCL_STORING_PATH, FileActionUtils.combine(qItem.getParam()));
            if (file.exists()) {
                FileActionUtils.openFile(file.getPath());
            }
            ctx.close();
            break;
        }
        ctx.writeAndFlush("FEEDBACK");
    }

    @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();
    }

    protected void prepareFolderPath(String filepath) {
        File file = new File(filepath);
        File folder = new File(file.getParent());
        if (!folder.exists()) {
            folder.mkdirs();
            folder.setExecutable(true, false);
            folder.setReadable(true, false);
            folder.setWritable(true, false);
        }
    }
}