Raise error or give warning if update_job_state() is called on empt…

…y task collection.
gc3pie · Jan 22, 2018 · c0c94de · c0c94de
1 parent 89f489e
commit c0c94de
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/gc3libs/workflow.py b/gc3libs/workflow.py
@@ -800,6 +800,15 @@ def _state(self):
         ]:
             if stats[state] > 0:
                 return state
+        if self.tasks:
+            gc3libs.log.error(
+                "BUG! Non-empty task collection %r,"
+                " yet `self.stats()` returned zero...", self)
+        else:
+            gc3libs.log.warning(
+                "update_state() called on empty task collection %s"
+                " -- this operation makes no sense,"
+                " setting collection state to `UNKNOWN`", self)
         return Run.State.UNKNOWN
 
     def add(self, task):