Skips some specific steps when importing data

- We need to prevent certain operations from running when we are importing data
- This is to prevent unique database constraints from being violated

- Do not register plugins during data import
- Do not launch notification events

InvenTree/plugin/apps.py

@@ -8,6 +8,7 @@ from django.conf import settings
 
 from maintenance_mode.core import set_maintenance_mode
 
+from InvenTree.ready import isImportingData
 from plugin import registry
 
 
@@ -19,13 +20,17 @@ class PluginAppConfig(AppConfig):
 
     def ready(self):
         if settings.PLUGINS_ENABLED:
-            logger.info('Loading InvenTree plugins')
+            
+            if isImportingData():
+                logger.info('Skipping plugin loading for data import')
+            else:
+                logger.info('Loading InvenTree plugins')
 
-            if not registry.is_loading:
-                # this is the first startup
-                registry.collect_plugins()
-                registry.load_plugins()
+                if not registry.is_loading:
+                    # this is the first startup
+                    registry.collect_plugins()
+                    registry.load_plugins()
 
-                # drop out of maintenance
-                # makes sure we did not have an error in reloading and maintenance is still active
-                set_maintenance_mode(False)
+                    # drop out of maintenance
+                    # makes sure we did not have an error in reloading and maintenance is still active
+                    set_maintenance_mode(False)