@SuppressWarnings("unchecked")
protected void onInvocation(final HandlerContext ctx, final Invocation invocation) {
final RemoteReference toReference = invocation.getToReference();
final LocalObjects.LocalObjectEntry<Object> entry =
objects.findLocalObjectByReference(toReference);
if (entry != null) {
final Task<Object> result =
InternalUtils.safeInvoke(
() -> entry.run(target -> performInvocation(ctx, invocation, entry, target)));
// this has to be done here because of exceptions that can occur before performInvocation is
// even called.
if (invocation.getCompletion() != null) {
InternalUtils.linkFuturesOnError(result, invocation.getCompletion());
}
} else {
if (toReference instanceof Actor) {
// on activate will handle the completion;
InternalUtils.safeInvoke(
() ->
executionSerializer.offerJob(
toReference, () -> onActivate(ctx, invocation), maxQueueSize));
} else {
// missing actor observer
invocation.setHops(invocation.getHops() + 1);
if (invocation.getCompletion() != null) {
invocation.getCompletion().completeExceptionally(new ObserverNotFound());
}
}
}
}
private Task<Void> onActivate(HandlerContext ctx, final Invocation invocation) {
// this must run serialized by the remote reference key.
LocalObjects.LocalObjectEntry<Object> entry =
objects.findLocalObjectByReference(invocation.getToReference());
if (entry == null) {
objects.registerLocalObject(invocation.getToReference(), null);
entry = objects.findLocalObjectByReference(invocation.getToReference());
}
// queues the invocation
final LocalObjects.LocalObjectEntry<Object> theEntry = entry;
final Task result = entry.run(target -> performInvocation(ctx, invocation, theEntry, target));
if (invocation.getCompletion() != null) {
InternalUtils.linkFuturesOnError(result, invocation.getCompletion());
}
// yielding since we blocked the entry before running on activate (serialized execution)
return Task.done();
}
