@Override
public void onNext(final Object w) {
if (w == null) {
throw Exceptions.argumentIsNullException();
}
if (subscription == null) {
throw Exceptions.failWithCancel();
}
try {
ChannelFuture cf = doOnWrite(w, ctx);
lastWrite = cf;
if (cf != null && log.isDebugEnabled()) {
cf.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (!future.isSuccess()) {
log.error("write error :" + w, future.cause());
if (ByteBuf.class.isAssignableFrom(w.getClass())) {
((ByteBuf) w).resetReaderIndex();
}
}
}
});
}
} catch (Throwable t) {
log.error("Write error for " + w, t);
onError(t);
}
}
@Override
public void next(Object value) {
if (value == null) {
fail(new NullPointerException("value is null"));
return;
}
if (done) {
Exceptions.onNextDropped(value);
return;
}
if (caughtUp && actual != null) {
try {
actual.onNext(value);
} finally {
ch.read();
ReferenceCountUtil.release(value);
}
} else {
Queue<Object> q = queue;
if (q == null) {
q = QueueSupplier.unbounded().get();
queue = q;
}
q.offer(value);
if (drain()) {
caughtUp = true;
}
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
try {
inboundEmitter.complete();
super.channelInactive(ctx);
} catch (Throwable err) {
Exceptions.throwIfFatal(err);
inboundEmitter.fail(err);
}
}
@Override
public void onNext(Object w) {
if (w == null) {
throw Exceptions.argumentIsNullException();
}
if (subscription == null) {
throw Exceptions.failWithCancel();
}
try {
ChannelFuture cf = doOnWrite(w, ctx);
if (cf != null) {
cf.addListener(writeListener);
}
ctx.flush();
} catch (Throwable t) {
log.error("Write error for " + w, t);
onError(t);
throw Exceptions.failWithCancel();
}
}
@Override
public void onError(Throwable t) {
if (t == null) {
throw Exceptions.argumentIsNullException();
}
if (subscription == null) {
throw new IllegalStateException("already flushed", t);
}
log.error("Write error", t);
subscription = null;
ctx.channel().closeFuture().removeListener(this);
doOnTerminate(ctx, null, promise, t);
}
@SuppressWarnings("unchecked")
protected final void doRead(Object msg) {
if (msg == null) {
return;
}
try {
if (msg == Unpooled.EMPTY_BUFFER || msg instanceof EmptyByteBuf) {
return;
}
inboundEmitter.next(msg);
} catch (Throwable err) {
Exceptions.throwIfFatal(err);
inboundEmitter.fail(err);
}
}
@Override
public void fail(Throwable error) {
if (error == null) {
error = new NullPointerException("error is null");
}
if (isCancelled() || done) {
Exceptions.onErrorDropped(error);
return;
}
done = true;
if (caughtUp && actual != null) {
actual.onError(error);
} else {
this.error = error;
done = true;
drain();
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable err) throws Exception {
Exceptions.throwIfFatal(err);
inboundEmitter.fail(err);
}