/**
* Handles incoming control commands on channel zero.
*
* @see ChannelN#processAsync
*/
@SuppressWarnings("unused")
public boolean processControlCommand(Command c) throws IOException {
// Similar trick to ChannelN.processAsync used here, except
// we're interested in whole-connection quiescing.
// See the detailed comments in ChannelN.processAsync.
Method method = c.getMethod();
if (isOpen()) {
if (method instanceof AMQP.Connection.Close) {
handleConnectionClose(c);
return true;
} else if (method instanceof AMQP.Connection.Blocked) {
AMQP.Connection.Blocked blocked = (AMQP.Connection.Blocked) method;
try {
for (BlockedListener l : this.blockedListeners) {
l.handleBlocked(blocked.getReason());
}
} catch (Throwable ex) {
getExceptionHandler().handleBlockedListenerException(this, ex);
}
return true;
} else if (method instanceof AMQP.Connection.Unblocked) {
try {
for (BlockedListener l : this.blockedListeners) {
l.handleUnblocked();
}
} catch (Throwable ex) {
getExceptionHandler().handleBlockedListenerException(this, ex);
}
return true;
} else {
return false;
}
} else {
if (method instanceof AMQP.Connection.Close) {
// Already shutting down, so just send back a CloseOk.
try {
_channel0.quiescingTransmit(new AMQP.Connection.CloseOk.Builder().build());
} catch (IOException ignored) {
} // ignore
return true;
} else if (method instanceof AMQP.Connection.CloseOk) {
// It's our final "RPC". Time to shut down.
_running = false;
// If Close was sent from within the MainLoop we
// will not have a continuation to return to, so
// we treat this as processed in that case.
return !_channel0.isOutstandingRpc();
} else { // Ignore all others.
return true;
}
}
}
/**
* Protected API - Close this connection with the given code, message, source and timeout value
* for all the close operations to complete. Specifies if any encountered exceptions should be
* ignored.
*/
public void close(
int closeCode,
String closeMessage,
boolean initiatedByApplication,
Throwable cause,
int timeout,
boolean abort)
throws IOException {
boolean sync = !(Thread.currentThread() == mainLoopThread);
try {
AMQP.Connection.Close reason =
new AMQP.Connection.Close.Builder().replyCode(closeCode).replyText(closeMessage).build();
final ShutdownSignalException sse =
startShutdown(reason, initiatedByApplication, cause, true);
if (sync) {
BlockingRpcContinuation<AMQCommand> k =
new BlockingRpcContinuation<AMQCommand>() {
@Override
public AMQCommand transformReply(AMQCommand command) {
AMQConnection.this.finishShutdown(sse);
return command;
}
};
_channel0.quiescingRpc(reason, k);
k.getReply(timeout);
} else {
_channel0.quiescingTransmit(reason);
}
} catch (TimeoutException tte) {
if (!abort) {
ShutdownSignalException sse = new ShutdownSignalException(true, true, null, this);
sse.initCause(cause);
throw sse;
}
} catch (ShutdownSignalException sse) {
if (!abort) throw sse;
} catch (IOException ioe) {
if (!abort) throw ioe;
} finally {
if (sync) _frameHandler.close();
}
}
@SuppressWarnings("unused")
public void handleConnectionClose(Command closeCommand) {
ShutdownSignalException sse =
shutdown(closeCommand.getMethod(), false, null, _inConnectionNegotiation);
try {
_channel0.quiescingTransmit(new AMQP.Connection.CloseOk.Builder().build());
} catch (IOException ignored) {
} // ignore
_brokerInitiatedShutdown = true;
SocketCloseWait scw = new SocketCloseWait(sse);
// if shutdown executor is configured, use it. Otherwise
// execut socket close monitor the old fashioned way.
// see rabbitmq/rabbitmq-java-client#91
if (shutdownExecutor != null) {
shutdownExecutor.execute(scw);
} else {
final String name =
"RabbitMQ connection shutdown monitor " + getHostAddress() + ":" + getPort();
Thread waiter = Environment.newThread(threadFactory, scw, name);
waiter.start();
}
}