RouterSocketServerPipelineFactory.java

/*
* Copyright 2009 VoidSearch.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 com.voidsearch.voidbase.storage.distributed.router.nio;

import org.jboss.netty.channel.ChannelHandler;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import static org.jboss.netty.channel.Channels.pipeline;
import org.jboss.netty.handler.codec.frame.DelimiterBasedFrameDecoder;
import org.jboss.netty.handler.codec.frame.Delimiters;
import org.jboss.netty.handler.codec.frame.LengthFieldBasedFrameDecoder;
import org.jboss.netty.handler.codec.string.StringDecoder;
import org.jboss.netty.handler.codec.string.StringEncoder;

public class RouterSocketServerPipelineFactory implements ChannelPipelineFactory {
    private final ChannelHandler handler;
    private static final Integer MAX_FRAME_SIZE = 8192;

    public RouterSocketServerPipelineFactory(ChannelHandler handler) {
        this.handler = handler;
    }

    public ChannelPipeline getPipeline() throws Exception {
        ChannelPipeline pipeline = pipeline();

        // Add the text line codec combination first,
        pipeline.addLast("framer", new LengthFieldBasedFrameDecoder(MAX_FRAME_SIZE, 2, 3, 0, 0));
        pipeline.addLast("decoder", new StringDecoder());
        pipeline.addLast("encoder", new StringEncoder());

        // and then business logic.
        pipeline.addLast("handler", handler);

        return pipeline;
    }
}