private QueueConsumer recreateTopicConsumer(String subscriptionId, boolean autoAck) {
QueueConsumer consumer;
if (subscriptionExists(subscriptionId)) {
QueueConsumer tmp = null;
try {
tmp =
createConsumer(
true, autoAck, subscriptionId, null, consumerTimeoutSeconds * 1000, false);
} catch (ActiveMQException e) {
throw new RuntimeException(e);
}
consumer = queueConsumers.putIfAbsent(subscriptionId, tmp);
if (consumer == null) {
consumer = tmp;
serviceManager.getTimeoutTask().add(this, subscriptionId);
} else {
tmp.shutdown();
}
} else {
throw new WebApplicationException(
Response.status(405)
.entity("Failed to find subscriber " + subscriptionId + " you will have to reconnect")
.type("text/plain")
.build());
}
return consumer;
}
private void shutdown(QueueConsumer consumer) {
synchronized (consumer) {
consumer.shutdown();
queueConsumers.remove(consumer.getId());
Subscription subscription = (Subscription) consumer;
if (subscription.isDeleteWhenIdle()) deleteSubscriberQueue(consumer);
}
}
private void internalDeleteSubscription(String consumerId) {
QueueConsumer consumer = queueConsumers.remove(consumerId);
if (consumer == null) {
String msg = "Failed to match a subscription to URL " + consumerId;
throw new WebApplicationException(
Response.status(Response.Status.NOT_FOUND).entity(msg).type("text/plain").build());
}
consumer.shutdown();
deleteSubscriberQueue(consumer);
}
public void stop() {
for (QueueConsumer consumer : queueConsumers.values()) {
consumer.shutdown();
Subscription subscription = (Subscription) consumer;
if (!subscription.isDurable()) {
deleteSubscriberQueue(consumer);
}
}
queueConsumers.clear();
}
@Override
public boolean testTimeout(String target, boolean autoShutdown) {
QueueConsumer consumer = queueConsumers.get(target);
Subscription subscription = (Subscription) consumer;
if (consumer == null) return false;
if (System.currentTimeMillis() - consumer.getLastPingTime() > subscription.getTimeout()) {
ActiveMQRestLogger.LOGGER.shutdownRestSubscription(consumer.getId());
if (autoShutdown) {
shutdown(consumer);
}
return true;
} else {
return false;
}
}
private void headAutoAckSubscriptionResponse(
UriInfo uriInfo,
QueueConsumer consumer,
Response.ResponseBuilder builder,
String pathToPullSubscriptions) {
// we synchronize just in case a failed request is still processing
synchronized (consumer) {
QueueConsumer.setConsumeNextLink(
serviceManager.getLinkStrategy(),
builder,
uriInfo,
pathToPullSubscriptions + "/acknowledged/" + consumer.getId(),
Long.toString(consumer.getConsumeIndex()));
}
}
private void deleteSubscriberQueue(QueueConsumer consumer) {
String subscriptionName = consumer.getId();
ClientSession session = null;
try {
session = sessionFactory.createSession();
session.deleteQueue(subscriptionName);
} catch (ActiveMQException e) {
} finally {
if (session != null) {
try {
session.close();
} catch (ActiveMQException e) {
}
}
}
}
@POST
public Response createSubscription(
@FormParam("durable") @DefaultValue("false") boolean durable,
@FormParam("autoAck") @DefaultValue("true") boolean autoAck,
@FormParam("name") String subscriptionName,
@FormParam("selector") String selector,
@FormParam("delete-when-idle") Boolean destroyWhenIdle,
@FormParam("idle-timeout") Long timeout,
@Context UriInfo uriInfo) {
ActiveMQRestLogger.LOGGER.debug("Handling POST request for \"" + uriInfo.getPath() + "\"");
if (timeout == null) timeout = Long.valueOf(consumerTimeoutSeconds * 1000);
boolean deleteWhenIdle = !durable; // default is true if non-durable
if (destroyWhenIdle != null) deleteWhenIdle = destroyWhenIdle.booleanValue();
if (subscriptionName != null) {
// see if this is a reconnect
QueueConsumer consumer = queueConsumers.get(subscriptionName);
if (consumer != null) {
boolean acked = consumer instanceof AcknowledgedSubscriptionResource;
acked = !acked;
if (acked != autoAck) {
throw new WebApplicationException(
Response.status(412)
.entity("Consumer already exists and ack-modes don't match.")
.type("text/plain")
.build());
}
Subscription sub = (Subscription) consumer;
if (sub.isDurable() != durable) {
throw new WebApplicationException(
Response.status(412)
.entity("Consumer already exists and durability doesn't match.")
.type("text/plain")
.build());
}
Response.ResponseBuilder builder = Response.noContent();
String pathToPullSubscriptions = uriInfo.getMatchedURIs().get(0);
if (autoAck) {
headAutoAckSubscriptionResponse(uriInfo, consumer, builder, pathToPullSubscriptions);
consumer.setSessionLink(
builder, uriInfo, pathToPullSubscriptions + "/auto-ack/" + consumer.getId());
} else {
headAcknowledgedConsumerResponse(uriInfo, (AcknowledgedQueueConsumer) consumer, builder);
consumer.setSessionLink(
builder, uriInfo, pathToPullSubscriptions + "/acknowledged/" + consumer.getId());
}
return builder.build();
}
} else {
subscriptionName = generateSubscriptionName();
}
ClientSession session = null;
try {
// if this is not a reconnect, create the subscription queue
if (!subscriptionExists(subscriptionName)) {
session = sessionFactory.createSession();
if (durable) {
session.createQueue(destination, subscriptionName, true);
} else {
session.createTemporaryQueue(destination, subscriptionName);
}
}
QueueConsumer consumer =
createConsumer(durable, autoAck, subscriptionName, selector, timeout, deleteWhenIdle);
queueConsumers.put(consumer.getId(), consumer);
serviceManager.getTimeoutTask().add(this, consumer.getId());
UriBuilder location = uriInfo.getAbsolutePathBuilder();
if (autoAck) location.path("auto-ack");
else location.path("acknowledged");
location.path(consumer.getId());
Response.ResponseBuilder builder = Response.created(location.build());
if (autoAck) {
QueueConsumer.setConsumeNextLink(
serviceManager.getLinkStrategy(),
builder,
uriInfo,
uriInfo.getMatchedURIs().get(0) + "/auto-ack/" + consumer.getId(),
"-1");
} else {
AcknowledgedQueueConsumer.setAcknowledgeNextLink(
serviceManager.getLinkStrategy(),
builder,
uriInfo,
uriInfo.getMatchedURIs().get(0) + "/acknowledged/" + consumer.getId(),
"-1");
}
return builder.build();
} catch (ActiveMQException e) {
throw new RuntimeException(e);
} finally {
if (session != null) {
try {
session.close();
} catch (ActiveMQException e) {
}
}
}
}
