moveToDeadLetter method
Permanently removes a message from the queue and sends it to dead letter queue.
message
a message to be removed. Return (optional) Future that receives or null for success. Throws error
Implementation
@override
Future moveToDeadLetter(MessageEnvelope message) async {
if (message.getReference() == null) {
return null;
}
int lockedToken = message.getReference();
_lockedMessages.remove(lockedToken);
message.setReference(null);
counters.incrementOne('queue.' + getName() + '.dead_messages');
logger.trace(message.correlation_id, 'Moved to dead message %s at %s',
[message, toString()]);
}