protected void handleConsumerUnreadyRequest(long requestId, Address address) {
Owner consumer = new Owner(address, requestId);
_consumerLock.lock();
try {
_consumersAvailable.remove(consumer);
} finally {
_consumerLock.unlock();
}
sendRemoveConsumerRequest(consumer);
}
protected void handleView(View view) {
this.view = view;
if (log.isDebugEnabled()) log.debug("view=" + view);
List<Address> members = view.getMembers();
_consumerLock.lock();
try {
// This removes the consumers that were registered that are now gone
Iterator<Owner> iterator = _consumersAvailable.iterator();
while (iterator.hasNext()) {
Owner owner = iterator.next();
if (!members.contains(owner.getAddress())) {
iterator.remove();
sendRemoveConsumerRequest(owner);
}
}
// This removes the tasks that those requestors are gone
iterator = _runRequests.iterator();
while (iterator.hasNext()) {
Owner owner = iterator.next();
if (!members.contains(owner.getAddress())) {
iterator.remove();
sendRemoveRunRequest(owner);
}
}
synchronized (_awaitingReturn) {
for (Entry<Owner, Runnable> entry : _awaitingReturn.entrySet()) {
// The person currently servicing our request has gone down
// without completing so we have to keep our request alive by
// sending ours back to the coordinator
Owner owner = entry.getKey();
if (!members.contains(owner.getAddress())) {
Runnable runnable = entry.getValue();
// We need to register the request id before sending the request back to the coordinator
// in case if our task gets picked up since another was removed
_requestId.put(runnable, owner.getRequestId());
_awaitingConsumer.add(runnable);
sendToCoordinator(RUN_REQUEST, owner.getRequestId(), local_addr);
}
}
}
} finally {
_consumerLock.unlock();
}
}
protected void handleTaskRequest(long requestId, Address address) {
final Owner consumer;
Owner source = new Owner(address, requestId);
_consumerLock.lock();
try {
consumer = _consumersAvailable.poll();
// We don't add duplicate run requests - this allows for resubmission
// if it is thought the message may have been dropped
if (consumer == null && !_runRequests.contains(source)) {
_runRequests.add(source);
}
} finally {
_consumerLock.unlock();
}
if (consumer != null) {
sendRequest(
source.getAddress(), Type.CONSUMER_FOUND, consumer.getRequestId(), consumer.getAddress());
sendRemoveConsumerRequest(consumer);
} else {
sendNewRunRequest(source);
}
}