com.zipwhip.api.signals.sockets.netty.pipeline.SocketIoCommandEncoder Maven / Gradle / Ivy

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package com.zipwhip.api.signals.sockets.netty.pipeline;

import com.zipwhip.api.signals.commands.ConnectCommand;
import com.zipwhip.api.signals.commands.SerializingCommand;
import com.zipwhip.signals.server.protocol.SocketIoProtocol;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandler;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.handler.codec.oneone.OneToOneEncoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Created by IntelliJ IDEA.
 * User: jed
 * Date: 1/9/12
 * Time: 4:40 PM
 */
public class SocketIoCommandEncoder extends OneToOneEncoder implements ChannelHandler {

    protected static final Logger LOGGER = LoggerFactory.getLogger(SocketIoCommandEncoder.class);

    private long messageId = 0l;

    @Override
    protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {

        String message = null;

        if (msg instanceof ConnectCommand) {

            ConnectCommand command = (ConnectCommand) msg;

            message = SocketIoProtocol.connectMessageResponse(command.serialize(), command.getClientId());

        } else if (msg instanceof SerializingCommand) {

            SerializingCommand command = (SerializingCommand) msg;

            message = SocketIoProtocol.jsonMessageResponse(messageId++, command.serialize());
        }

        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("Encoded message:  " + message);
        }

        return message;
    }

}