Github user ahgittin commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/480#discussion_r103500687
--- Diff:
core/src/main/java/org/apache/brooklyn/util/core/task/BasicExecutionContext.java
---
@@ -96,7 +98,50 @@ public ExecutionManager getExecutionManager() {
/** returns tasks started by this context (or tasks which have all the
tags on this object) */
@Override
public Set<Task<?>> getTasks() { return
executionManager.getTasksWithAllTags(tags); }
-
+
+ /** performs execution without spawning a new task thread, though it
does temporarily set a fake task for the purpose of getting context;
+ * currently supports suppliers or callables */
+ @SuppressWarnings("unchecked")
+ @Override
+ public <T> Maybe<T> getImmediately(Object callableOrSupplier) {
+ BasicTask<?> fakeTaskForContext;
+ if (callableOrSupplier instanceof BasicTask) {
+ fakeTaskForContext = (BasicTask<?>)callableOrSupplier;
+ if (fakeTaskForContext.isQueuedOrSubmitted()) {
+ if (fakeTaskForContext.isDone()) {
+ return Maybe.of((T)fakeTaskForContext.getUnchecked());
+ } else {
+ throw new ImmediateUnsupportedException("Task is in
progress and incomplete: "+fakeTaskForContext);
+ }
+ }
+ callableOrSupplier = fakeTaskForContext.getJob();
--- End diff --
as above
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