better error checking

tmtcc_runner.py

@@ -66,7 +66,15 @@ def assign_tmtc_commander_hooks(hook_object: TmTcHookBase):
     from tmtc_core.core.definitions import CoreGlobalIds
 
     if hook_object is None:
-        logger.error("Passed hook base object handle is invalid! Terminating..")
+        logger.error("Passed hook base object handle is invalid. Terminating..")
+        sys.exit(-1)
+
+    # Check whether all required hook functions have bee implemented properly, Python
+    # does not enforce this.
+    if hook_object.get_version is None or hook_object.add_globals_pre_args_parsing is None \
+            or hook_object.add_globals_post_args_parsing is None:
+        logger.error("Passed hook base object handle is invalid. "
+                     "Abstract functions have to be implemented!")
         sys.exit(-1)
     # Insert hook object handle into global dictionary so it can be used by the TMTC commander
     update_global(CoreGlobalIds.TMTC_HOOK, hook_object)
@@ -84,8 +92,9 @@ def set_up_tmtc_commander(use_gui: bool, reduced_printout: bool):
     # of the commander core.
     hook_obj_raw = get_global(CoreGlobalIds.TMTC_HOOK)
     if hook_obj_raw is None:
-        logger.info("No valid hook object found. Please make sure to implement it, instantiate it "
-                    "and pass it via the assign_tmtc_commander_hooks function!")
+        logger.info("No valid hook object found. "
+                    "initialize_tmtc_commander needs to be called first. Terminating..")
+        sys.exit(-1)
     hook_obj = cast(TmTcHookBase, hook_obj_raw)
 
     if not reduced_printout: