Merged in feature/action_preregister_implementation (pull request #354)

Feature/action preregister implementation

Approved-by: Milan Kolar <milan@orbi.tools>

pype/ftrack/actions/action_djvview.py

@@ -36,12 +36,13 @@ class DJVViewAction(BaseAction):
             'file_ext', ["img", "mov", "exr"]
         )
 
-    def register(self):
-        assert (self.djv_path is not None), (
-            'DJV View is not installed'
-            ' or paths in presets are not set correctly'
-        )
-        super().register()
+    def preregister(self):
+        if self.djv_path is None:
+            return (
+                'DJV View is not installed'
+                ' or paths in presets are not set correctly'
+            )
+        return True
 
     def discover(self, session, entities, event):
         """Return available actions based on *event*. """

pype/ftrack/actions/action_rv.py

@@ -61,12 +61,12 @@ class RVAction(BaseAction):
     def set_rv_path(self):
         self.rv_path = self.config_data.get("rv_path")
 
-    def register(self):
-        assert (self.rv_path is not None), (
-            'RV is not installed'
-            ' or paths in presets are not set correctly'
-        )
-        super().register()
+    def preregister(self):
+        if self.rv_path is None:
+            return (
+                'RV is not installed or paths in presets are not set correctly'
+            )
+        return True
 
     def get_components_from_entity(self, session, entity, components):
         """Get components from various entity types.

pype/ftrack/lib/ftrack_base_handler.py

@@ -13,6 +13,13 @@ class MissingPermision(Exception):
         super().__init__(message)
 
 
+class PreregisterException(Exception):
+    def __init__(self, message=None):
+        if not message:
+            message = "Pre-registration conditions were not met"
+        super().__init__(message)
+
+
 class BaseHandler(object):
     '''Custom Action base class
 
@@ -89,15 +96,17 @@ class BaseHandler(object):
                     '!{} "{}" - You\'re missing required {} permissions'
                 ).format(self.type, label, str(MPE)))
             except AssertionError as ae:
-                self.log.info((
+                self.log.warning((
                     '!{} "{}" - {}'
                 ).format(self.type, label, str(ae)))
             except NotImplementedError:
                 self.log.error((
                     '{} "{}" - Register method is not implemented'
-                ).format(
-                    self.type, label)
-                )
+                ).format(self.type, label))
+            except PreregisterException as exc:
+                self.log.warning((
+                    '{} "{}" - {}'
+                ).format(self.type, label, str(exc)))
             except Exception as e:
                 self.log.error('{} "{}" - Registration failed ({})'.format(
                     self.type, label, str(e))
@@ -163,10 +172,10 @@ class BaseHandler(object):
 
         if result is True:
             return
-        msg = "Pre-register conditions were not met"
+        msg = None
         if isinstance(result, str):
             msg = result
-        raise Exception(msg)
+        raise PreregisterException(msg)
 
     def preregister(self):
         '''