@Override
public void channelRead(final ChannelHandlerContext ctx, final Object msg) throws Exception {
if (msg instanceof ByteBuf) {
// handle normal request
final ByteBuf chunk = (ByteBuf) msg;
if (flushedBuffer) {
bufferedMode = false;
}
if (bufferedMode) {
try {
channelBuffer.writeBytes(chunk);
ctx.channel().read();
} catch (IndexOutOfBoundsException iobe) {
logger.trace(
"Flushing buffer upstream and switching to chunked mode as downstream response too large");
bufferedMode = false;
// write and flush buffer upstream
if (outboundChannel.isActive()) {
outboundChannel
.writeAndFlush(channelBuffer)
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (future.isSuccess()) {
// write and flush this chunk upstream in case this single chunk is too
// large for buffer
channelRead(ctx, chunk);
} else {
future.channel().close();
}
}
});
}
}
} else {
bufferedMode = false;
if (outboundChannel.isActive()) {
outboundChannel
.writeAndFlush(chunk)
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (future.isSuccess()) {
// was able to flush out data, start to read the next chunk
ctx.channel().read();
} else {
future.channel().close();
}
}
});
}
}
}
}
public void onMessage(Message message) {
if (message.getType() == MessageType.MSG && message.get(MessageProperty.ROOM).equals("#main")) {
long userId = message.get(MessageProperty.USER_ID);
String name = message.get(MessageProperty.NAME);
UserCredentials userCredentials = null;
if (needsFetchingConnectionData(userId)) {
userCredentials = fetchConnectionDataForUser(name, userId);
}
if (userCredentials != null) {
String id = userCredentials.getId();
Channel channel = connections.get(id.toLowerCase());
if (channel == null || !channel.isActive()) {
try {
channel = createConnection(id, userCredentials.getToken());
} catch (InterruptedException e) {
logger.warn("", e);
}
}
if (channel != null) {
channel.attr(lastMessageAttrKey).set(System.currentTimeMillis());
channel.writeAndFlush(
"PRIVMSG #" + this.channel + " :" + message.get(MessageProperty.TEXT) + "\r\n");
}
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
cause.printStackTrace();
Channel ch = ctx.channel();
if (ch.isActive()) {
ch.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
}
}
public void channelRead(final ChannelHandlerContext remoteChannelCtx, final Object msg)
throws Exception {
LoggerUtil.debug(
logger, uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY), "Remote msg", msg);
remainMsgCount++;
if (remainMsgCount <= 5) {
remoteChannelCtx.read();
}
HttpObject ho = (HttpObject) msg;
if (ho instanceof HttpResponse) {
HttpResponse httpResponse = (HttpResponse) ho;
LoggerUtil.info(
forwardRestLogger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
httpResponse.getStatus(),
httpResponse.getProtocolVersion());
httpResponse.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
httpResponse.headers().set("Proxy-Connection", HttpHeaders.Values.KEEP_ALIVE);
}
if (uaChannel.isActive()) {
uaChannel
.writeAndFlush(ho)
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
LoggerUtil.debug(
logger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
"Write to UA finished: " + future.isSuccess());
if (future.isSuccess()) {
remainMsgCount--;
remoteChannelCtx.read();
LoggerUtil.debug(
logger,
uaChannel.attr(ApnProxyConnectionAttribute.ATTRIBUTE_KEY),
"Fire read again");
} else {
remoteChannelCtx.close();
}
}
});
} else {
remoteChannelCtx.close();
}
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
if (bufferedMode && outboundChannel.isActive()) {
flushedBuffer = true;
outboundChannel
.writeAndFlush(interceptor.intercept(ctx, channelBuffer, logger))
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (future.isSuccess()) {
channelBuffer.clear();
} else {
future.channel().close();
}
}
});
}
super.channelReadComplete(ctx);
}
@Override
public void run() {
try {
logger.debug("starting cleanup");
for (Map.Entry<String, Channel> entry : connections.entrySet()) {
Channel channel = entry.getValue();
Long lastMessage = channel.attr(lastMessageAttrKey).get();
if (System.currentTimeMillis() - lastMessage > FIVE_MINUTES) {
channel.disconnect();
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
} else if (!channel.isActive()) {
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
}
}
logger.debug("cleanup complete");
} catch (Exception e) {
logger.error("exception while clean up", e);
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (outboundChannel.isActive()) {
outboundChannel.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
}
}
