protected void notifyListener(NetNotification notification) {
Map<String, String> headers = notification.getHeaders();
boolean ackRequired = true;
if (headers != null) {
String value = headers.get("ACK_REQUIRED");
if (value != null) {
if (value.equalsIgnoreCase("false")) {
ackRequired = false; // ACK is not required
}
}
}
Map<String, BrokerAsyncConsumer> subscripions =
_consumerList.get(
notification.getDestinationType().equals(DestinationType.TOPIC)
? DestinationType.TOPIC
: DestinationType.QUEUE);
BrokerAsyncConsumer brokerAsyncConsumer = subscripions.get(notification.getSubscription());
if (brokerAsyncConsumer == null) {
log.error(
String.format(
"Unexpected notification. DestinationType: %s, Destination: %s, Subscription: %s.",
notification.getDestinationType(),
notification.getDestination(),
notification.getSubscription()));
return;
}
brokerAsyncConsumer.deliver(notification);
BrokerListener listener = brokerAsyncConsumer.getListener();
if (!ackRequired) {
return;
}
if ((notification.getDestinationType() != DestinationType.TOPIC) && listener.isAutoAck()) {
try {
acknowledge(notification);
} catch (Throwable t) {
log.error(
"Could not acknowledge message, messageId: '{}'",
notification.getMessage().getMessageId());
log.error(t.getMessage(), t);
}
}
}
/**
* Acknowledges a received message.
*
* @param notification The received notification message
* @param acceptRequest An AcceptRequest object used handling Accept messages.
*/
public void acknowledge(NetNotification notification, AcceptRequest acceptRequest)
throws Throwable {
if ((notification != null)
&& (notification.getMessage() != null)
&& (StringUtils.isNotBlank(notification.getMessage().getMessageId()))) {
NetBrokerMessage brkMsg = notification.getMessage();
if (notification.getDestinationType() == DestinationType.TOPIC) {
return;
}
String ackDestination = notification.getSubscription();
NetAcknowledge ackMsg = new NetAcknowledge(ackDestination, brkMsg.getMessageId());
if (acceptRequest != null) {
ackMsg.setActionId(acceptRequest.getActionId());
PendingAcceptRequestsManager.addAcceptRequest(acceptRequest);
}
NetAction action = new NetAction(ActionType.ACKNOWLEDGE);
action.setAcknowledgeMessage(ackMsg);
NetMessage msg = buildMessage(action);
getNetHandler().sendMessage(msg);
} else {
throw new IllegalArgumentException("Can't acknowledge invalid message.");
}
}