public static Message topicSubscribe(TopicConnection cnn, String topicName, long timeout)
throws JMSException {
TopicSubscriber receiver = getTopicSubscriber(cnn, topicName);
Message msg = receiver.receive(timeout);
if (msg != null) msg.acknowledge();
receiver.close();
return msg;
}
public static void drainTopic(TopicConnection cnn, String topic) throws Exception {
TopicSession session = cnn.createTopicSession(false, Session.DUPS_OK_ACKNOWLEDGE);
Topic t = session.createTopic(topic);
TopicSubscriber subscriber = session.createSubscriber(t);
Message msg = subscriber.receiveNoWait();
while (msg != null) {
try {
msg.acknowledge();
} catch (JMSException e) {
}
msg = subscriber.receiveNoWait();
}
subscriber.close();
session.close();
}
@Override
public void registerTopicSubscriber(
@NotNull RequestContext rc, @NotNull TopicSubscriber subscriber) {
addToStats("topicSubscription");
Boolean bootstrap = rc.bootstrap();
topicSubscribers.add((TopicSubscriber<K, V>) subscriber);
if (bootstrap != Boolean.FALSE && kvStore != null) {
try {
for (int i = 0; i < kvStore.segments(); i++)
kvStore.entriesFor(i, e -> subscriber.onMessage(e.getKey(), e.getValue()));
} catch (InvalidSubscriberException dontAdd) {
topicSubscribers.remove(subscriber);
}
}
}
@Override
public void unregisterTopicSubscriber(@NotNull TopicSubscriber subscriber) {
topicSubscribers.remove(subscriber);
removeFromStats("topicSubscription");
subscriber.onEndOfSubscription();
}
public tibjmsTopicSubscriber(String[] args) {
parseArgs(args);
/* print parameters */
System.err.println(
"\n------------------------------------------------------------------------");
System.err.println("tibjmsTopicSubscriber SAMPLE");
System.err.println("------------------------------------------------------------------------");
System.err.println(
"Server....................... " + ((serverUrl != null) ? serverUrl : "localhost"));
System.err.println(
"User......................... " + ((userName != null) ? userName : "******"));
System.err.println("Topic........................ " + topicName);
System.err.println(
"------------------------------------------------------------------------\n");
try {
tibjmsUtilities.initSSLParams(serverUrl, args);
} catch (JMSSecurityException e) {
System.err.println(
"JMSSecurityException: " + e.getMessage() + ", provider=" + e.getErrorCode());
e.printStackTrace();
System.exit(0);
}
if (topicName == null) {
System.err.println("Error: must specify topic name");
usage();
}
System.err.println("Subscribing to topic: " + topicName);
try {
TopicConnectionFactory factory = new com.tibco.tibjms.TibjmsTopicConnectionFactory(serverUrl);
TopicConnection connection = factory.createTopicConnection(userName, password);
TopicSession session =
connection.createTopicSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
/*
* Use createTopic() to enable subscriptions to dynamic topics.
*/
javax.jms.Topic topic = session.createTopic(topicName);
TopicSubscriber subscriber = session.createSubscriber(topic);
connection.start();
/* read topic messages */
while (true) {
javax.jms.Message message = subscriber.receive();
if (message == null) break;
System.err.println("Received message: " + message);
}
connection.close();
} catch (JMSException e) {
System.err.println("JMSException: " + e.getMessage() + ", provider=" + e.getErrorCode());
e.printStackTrace();
System.exit(0);
}
}
