Github user ahgittin commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/480#discussion_r103498263
--- 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;
--- End diff --
as noted above leaving the task running in background (or possibly not
submitting it) is the right thing to do for immediate execution of a task;
cancelling it is risky unless we know the task is dedicated to this one usage
(hence preferring `TaskFactory`); in particular
`EntityConfigTest.testGetTaskNonBlockingKey()` fails if
`allowImmediateExecution=true`
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