package play.server;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.handler.codec.http.HttpChunkAggregator;
import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
import org.jboss.netty.handler.codec.http.HttpResponseEncoder;
import org.jboss.netty.channel.ChannelHandler;
import play.Play;
import play.Logger;
import java.util.Map;
import java.util.HashMap;
import static org.jboss.netty.channel.Channels.pipeline;
public class HttpServerPipelineFactory implements ChannelPipelineFactory {
private String pipelineConfig = Play.configuration.getProperty("play.netty.pipeline", "play.server.FlashPolicyHandler,org.jboss.netty.handler.codec.http.HttpRequestDecoder,play.server.StreamChunkAggregator,org.jboss.netty.handler.codec.http.HttpResponseEncoder,org.jboss.netty.handler.stream.ChunkedWriteHandler,play.server.PlayHandler");
protected static Map<String, Class> classes = new HashMap<String, Class>();
public ChannelPipeline getPipeline() throws Exception {
ChannelPipeline pipeline = pipeline();
String[] handlers = pipelineConfig.split(",");
if(handlers.length <= 0){
Logger.error("You must defined at least the playHandler in \"play.netty.pipeline\"");
return pipeline;
}
// Create the play Handler (always the last one)
String handler = handlers[handlers.length - 1];
ChannelHandler instance = getInstance(handler);
PlayHandler playHandler = (PlayHandler) instance;
if (playHandler == null) {
Logger.error("The last handler must be the playHandler in \"play.netty.pipeline\"");
return pipeline;
}
// Get all the pipeline. Give the user the opportunity to add their own
for (int i = 0; i < handlers.length - 1; i++) {
handler = handlers[i];
try {
String name = getName(handler.trim());
instance = getInstance(handler);
if (instance != null) {
pipeline.addLast(name, instance);
playHandler.pipelines.put(name, instance);
}
} catch (Throwable e) {
Logger.error(" error adding " + handler, e);
}
}
if (playHandler != null) {
pipeline.addLast("handler", playHandler);
playHandler.pipelines.put("handler", playHandler);
}
return pipeline;
}
protected String getName(String name) {
if (name.lastIndexOf(".") > 0)
return name.substring(name.lastIndexOf(".") + 1);
return name;
}
protected ChannelHandler getInstance(String name) throws Exception {
Class clazz = classes.get(name);
if (clazz == null) {
clazz = Class.forName(name);
classes.put(name, clazz);
}
if (ChannelHandler.class.isAssignableFrom(clazz))
return (ChannelHandler)clazz.newInstance();
return null;
}
}