protected String handleRequest(
Channel channel, StreamInput buffer, long requestId, Version version) throws IOException {
final String action = buffer.readString();
final NettyTransportChannel transportChannel =
new NettyTransportChannel(transport, action, channel, requestId, version);
try {
final TransportRequestHandler handler = transportServiceAdapter.handler(action);
if (handler == null) {
throw new ActionNotFoundTransportException(action);
}
final TransportRequest request = handler.newInstance();
request.remoteAddress(
new InetSocketTransportAddress((InetSocketAddress) channel.getRemoteAddress()));
request.readFrom(buffer);
if (handler.executor() == ThreadPool.Names.SAME) {
//noinspection unchecked
handler.messageReceived(request, transportChannel);
} else {
threadPool
.executor(handler.executor())
.execute(new RequestHandler(handler, request, transportChannel, action));
}
} catch (Throwable e) {
try {
transportChannel.sendResponse(e);
} catch (IOException e1) {
logger.warn("Failed to send error message back to client for action [" + action + "]", e);
logger.warn("Actual Exception", e1);
}
}
return action;
}
@SuppressWarnings({"unchecked"})
@Override
public void run() {
try {
handler.messageReceived(request, transportChannel);
} catch (Throwable e) {
if (transport.lifecycleState() == Lifecycle.State.STARTED) {
// we can only send a response transport is started....
try {
transportChannel.sendResponse(e);
} catch (Throwable e1) {
logger.warn(
"Failed to send error message back to client for action [" + action + "]", e1);
logger.warn("Actual Exception", e);
}
}
}
}
@Override
public boolean isForceExecution() {
return handler.isForceExecution();
}
@SuppressWarnings({"unchecked"})
@Override
protected void doRun() throws Exception {
handler.messageReceived(request, transportChannel);
}