org.apache.james.protocols.netty.LineHandlerUpstreamHandler Maven / Gradle / Ivy
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package org.apache.james.protocols.netty;
import org.apache.james.protocols.api.ProtocolSessionImpl;
import org.apache.james.protocols.api.ProtocolSession;
import org.apache.james.protocols.api.Response;
import org.apache.james.protocols.api.handler.LineHandler;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelUpstreamHandler;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
/**
* {@link ChannelUpstreamHandler} implementation which will call a given {@link LineHandler} implementation
*
* @param
*/
public class LineHandlerUpstreamHandler extends SimpleChannelUpstreamHandler {
private final LineHandler handler;
private final S session;
public LineHandlerUpstreamHandler(S session, LineHandler handler) {
this.handler = handler;
this.session = session;
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
ChannelBuffer buf = (ChannelBuffer) e.getMessage();
Response response = handler.onLine(session, buf.toByteBuffer());
if (response != null) {
// TODO: This kind of sucks but I was not able to come up with something more elegant here
((ProtocolSessionImpl)session).getProtocolTransport().writeResponse(response, session);
}
}
}