/*
* Copyright 2014 Netflix, Inc.
*
* 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 io.reactivex.netty.pipeline;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.ReferenceCountUtil;
import io.reactivex.netty.channel.NewRxConnectionEvent;
import io.reactivex.netty.client.ConnectionReuseEvent;
import rx.Observer;
/**
* An adapter that converts a message generated by netty's pipeline to an Observable event. <br/>
*
* @author Nitesh Kant
*/
public class ObservableAdapter extends ChannelInboundHandlerAdapter {
@SuppressWarnings("rawtypes")
/*Nullable*/ private Observer bridgedObserver; /*This actually is an Rx Subject*/
@SuppressWarnings("unchecked")
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
if (null != bridgedObserver) {
try {
bridgedObserver.onNext(msg);
} catch (ClassCastException cce) {
bridgedObserver.onError(new RuntimeException("Mismatched message type.", cce));
} finally {
ReferenceCountUtil.release(msg);
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (null != bridgedObserver) {
bridgedObserver.onError(cause);
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (null != bridgedObserver) {
bridgedObserver.onCompleted();
}
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object event) throws Exception {
if (event instanceof NewRxConnectionEvent) {
NewRxConnectionEvent rxConnectionEvent = (NewRxConnectionEvent) event;
bridgedObserver = rxConnectionEvent.getConnectedObserver();
} else if (event instanceof ConnectionReuseEvent) {
ConnectionReuseEvent reuseEvent = (ConnectionReuseEvent) event;
bridgedObserver = reuseEvent.getConnectedObserver();
}
super.userEventTriggered(ctx, event);
}
}