OP-3026 - first implementation of saving settings changes to DB

This logs all changes in Settings to separate collection ('setting_log') to help debug/trace changes.
This functionality is pretty basic as it will be replaced by Ayon implementation in the future.

openpype/settings/handlers.py

@@ -235,6 +235,18 @@ class SettingsHandler(object):
         """
         pass
 
+    @abstractmethod
+    def save_change_log(self, project_name, changes, settings_type):
+        """Stores changes to settings to separate logging collection.
+        
+        Args:
+            project_name(str, null): Project name for which overrides are
+                or None for global settings.
+            changes(dict): Data of project overrides with override metadata.
+            settings_type (str): system|project|anatomy
+        """
+        pass
+
     @abstractmethod
     def get_studio_system_settings_overrides(self, return_version):
         """Studio overrides of system settings."""
@@ -913,6 +925,28 @@ class MongoSettingsHandler(SettingsHandler):
 
         return data
 
+    def save_change_log(self, project_name, changes, settings_type):
+        """Log all settings changes to separate collection"""
+        if not changes:
+            return
+
+        from openpype.lib import get_local_site_id
+
+        if settings_type == "project" and not project_name:
+            project_name = "default"
+
+        document = {
+            "user": get_local_site_id(),
+            "date_created": datetime.datetime.now(),
+            "project": project_name,
+            "settings_type": settings_type,
+            "changes": changes
+        }
+        collection_name = "settings_log"
+        collection = (self.settings_collection[self.database_name]
+                                              [collection_name])
+        collection.insert_one(document)
+
     def _save_project_anatomy_data(self, project_name, data_cache):
         # Create copy of data as they will be modified during save
         new_data = data_cache.data_copy()

openpype/settings/lib.py

@@ -159,6 +159,7 @@ def save_studio_settings(data):
             except SaveWarningExc as exc:
                 warnings.extend(exc.warnings)
 
+    _SETTINGS_HANDLER.save_change_log(None, changes, "system")
     _SETTINGS_HANDLER.save_studio_settings(data)
     if warnings:
         raise SaveWarningExc(warnings)
@@ -218,7 +219,7 @@ def save_project_settings(project_name, overrides):
                 )
             except SaveWarningExc as exc:
                 warnings.extend(exc.warnings)
-
+    _SETTINGS_HANDLER.save_change_log(project_name, changes, "project")
     _SETTINGS_HANDLER.save_project_settings(project_name, overrides)
 
     if warnings:
@@ -280,6 +281,7 @@ def save_project_anatomy(project_name, anatomy_data):
             except SaveWarningExc as exc:
                 warnings.extend(exc.warnings)
 
+    _SETTINGS_HANDLER.save_change_log(project_name, changes, "anatomy")
     _SETTINGS_HANDLER.save_project_anatomy(project_name, anatomy_data)
 
     if warnings: