Github user tbouron commented on a diff in the pull request:
https://github.com/apache/brooklyn-server/pull/521#discussion_r100310679
--- Diff:
camp/camp-brooklyn/src/main/java/org/apache/brooklyn/camp/brooklyn/spi/dsl/DslDeferredFunctionCall.java
---
@@ -99,48 +99,81 @@ public Object call() throws Exception {
}
protected static Maybe<Object> invokeOn(Object obj, String fnName,
List<?> args) {
- Object instance = obj;
- List<?> instanceArgs = args;
- Maybe<Method> method = Reflections.getMethodFromArgs(instance,
fnName, instanceArgs);
-
- if (method.isAbsent()) {
+ return new Invoker(obj, fnName, args).invoke();
+ }
+
+ protected static class Invoker {
+ final Object obj;
+ final String fnName;
+ final List<?> args;
+
+ Maybe<Method> method;
+ Object instance;
+ List<?> instanceArgs;
+
+ protected Invoker(Object obj, String fnName, List<?> args) {
+ this.fnName = fnName;
+ this.obj = obj;
+ this.args = args;
+ }
+
+ protected Maybe<Object> invoke() {
+ findMethod();
+
+ if (method.isPresent()) {
+ Method m = method.get();
+
+ checkCallAllowed(m);
+
+ try {
+ // Value is most likely another
BrooklynDslDeferredSupplier - let the caller handle it,
+ return
Maybe.of(Reflections.invokeMethodFromArgs(instance, m, instanceArgs));
+ } catch (IllegalArgumentException | IllegalAccessException
| InvocationTargetException e) {
+ // If the method is there but not executable for
whatever reason fail with a fatal error, don't return an absent.
+ throw Exceptions.propagate(new
InvocationTargetException(e, "Error invoking '"+fnName+instanceArgs+"' on
'"+instance+"'"));
--- End diff --
Miss `(` and `)` around `instanceArgs`
Unless you can you your `DslToStringHelpers.fn()` ?
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