@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (isRemote(ctx)) {
broker.removeLocalSession(routeId);
}
ctx.fireChannelInactive();
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
if (isRemote(ctx)) {
byte[] data = getPayloadFromByteBuf(buffer);
LOG.trace(
"Read complete,send message to remote channel: "
+ routeId
+ ",message is "
+ new String(data));
broker.sendRequest(new UscRemoteDataMessage(routeId, data, true));
buffer.clear();
return;
}
// propagate the data to rest of handlers in pipeline
ctx.fireChannelReadComplete();
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
UscConnectionException ex = new UscConnectionException("The channel is closed.");
UscRouteIdentifier routeId = ctx.channel().attr(UscPlugin.ROUTE_IDENTIFIER).get();
if (routeId != null) {
// this is a channel using remote channel
if (broker == null) {
broker = UscServiceUtils.getService(UscRouteBrokerService.class);
}
if (broker != null) {
broker.removeLocalSession(routeId);
} else {
log.error(
"Broker service is null! Can't check if it is remote channel message, failed to proccess this exception {}.",
ex);
}
return;
}
throw ex;
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, UscException ex) throws Exception {
log.trace("UscExceptionHandler channelRead0" + ex);
final Throwable t = ex.getCause();
Channel channel = ctx.channel();
UscRouteIdentifier routeId = ctx.channel().attr(UscPlugin.ROUTE_IDENTIFIER).get();
if (routeId != null) {
// this is a channel using remote channel
if (broker == null) {
broker = UscServiceUtils.getService(UscRouteBrokerService.class);
}
if (broker != null) {
broker.removeLocalSession(routeId);
} else {
log.error(
"Broker service is null! Can't check if it is remote channel message, failed to proccess this exception {}.",
ex);
}
return;
}
SettableFuture<UscSessionImpl> tmp = channel.attr(UscPlugin.SESSION).get();
if (tmp != null) {
UscSessionImpl session = tmp.get();
UscChannelImpl connection = session.getChannel();
// connection is down
if (t instanceof UscConnectionException) {
plugin.getConnectionManager().removeConnection(connection);
} else if (t instanceof UscChannelException) {
// TODO
;
} else if (t instanceof UscSessionException) {
connection.removeSession(session.getSessionId());
}
}
throw ex;
}
private boolean isRemote(ChannelHandlerContext ctx) {
routeId = ctx.channel().attr(UscPlugin.ROUTE_IDENTIFIER).get();
if (routeId != null) {
LOG.trace("UscRemoteDeviceHandler:Channel read finished for route id(" + routeId + ")");
if (broker == null) {
broker = UscServiceUtils.getService(UscRouteBrokerService.class);
}
if (broker != null) {
if (broker.isLocalRemoteSession(routeId)) {
return true;
} else {
LOG.debug(
"It's not local to remote channel("
+ routeId
+ ") message, pass it to other handler");
}
} else {
LOG.error(
"Broker service is null! Can't check if it is remote channel message, and pass it to other handler.");
}
}
return false;
}