Auto migrating (#3741)

* base structure for updates

* add base structure

* add settingscheck

* update docstring

* only load plugins if needed

* fix misstyping

* run migration

* check if there are open migrations

* log open migration

* add more logging

* patch in fore reloading on unload

* only run if database is ready

* check every 5 minutes

* remove non implemented feautres  from desc

* add command flag to makr if cmmand runs as worker

* Add tests for migrations

* factor mmigration plan into own function

* Add print statements

* add initial migrations for tests

* remove last assertation

* cleanup migrations after run

* add flag to accept empty source code files

* the flag is enough for reporting

* fix test

* do not run migrations on sqlite3

* make sure migrations don't fail if no plan ran

* increase coverage for  migration

* spell fix

* check for migrations daily

* add a migration check after plugins are installed

InvenTree/plugin/registry.py

@@ -162,8 +162,12 @@ class PluginsRegistry:
 
         logger.info('Finished loading plugins')
 
-    def unload_plugins(self):
-        """Unload and deactivate all IntegrationPlugins."""
+    def unload_plugins(self, force_reload: bool = False):
+        """Unload and deactivate all IntegrationPlugins.
+
+        Args:
+            force_reload (bool, optional): Also reload base apps. Defaults to False.
+        """
 
         logger.info('Start unloading plugins')
 
@@ -176,7 +180,7 @@ class PluginsRegistry:
         self._clean_registry()
 
         # deactivate all integrations
-        self._deactivate_plugins()
+        self._deactivate_plugins(force_reload=force_reload)
 
         # remove maintenance
         if not _maintenance:
@@ -184,11 +188,12 @@ class PluginsRegistry:
 
         logger.info('Finished unloading plugins')
 
-    def reload_plugins(self, full_reload: bool = False):
+    def reload_plugins(self, full_reload: bool = False, force_reload: bool = False):
         """Safely reload.
 
         Args:
             full_reload (bool, optional): Reload everything - including plugin mechanism. Defaults to False.
+            force_reload (bool, optional): Also reload base apps. Defaults to False.
         """
         # Do not reload whe currently loading
         if self.is_loading:
@@ -197,8 +202,8 @@ class PluginsRegistry:
         logger.info('Start reloading plugins')
 
         with maintenance_mode_on():
-            self.unload_plugins()
-            self.load_plugins(full_reload)
+            self.unload_plugins(force_reload=force_reload)
+            self.load_plugins(full_reload=full_reload)
 
         logger.info('Finished reloading plugins')
 
@@ -470,9 +475,13 @@ class PluginsRegistry:
         self.activate_plugin_app(plugins, force_reload=force_reload, full_reload=full_reload)
         self.activate_plugin_url(plugins, force_reload=force_reload, full_reload=full_reload)
 
-    def _deactivate_plugins(self):
-        """Run deactivation functions for all plugins."""
-        self.deactivate_plugin_app()
+    def _deactivate_plugins(self, force_reload: bool = False):
+        """Run deactivation functions for all plugins.
+
+        Args:
+            force_reload (bool, optional): Also reload base apps. Defaults to False.
+        """
+        self.deactivate_plugin_app(force_reload=force_reload)
         self.deactivate_plugin_schedule()
         self.deactivate_plugin_settings()
     # endregion
@@ -655,8 +664,12 @@ class PluginsRegistry:
             plugin_path = plugin.__module__.split('.')[0]
         return plugin_path
 
-    def deactivate_plugin_app(self):
-        """Deactivate AppMixin plugins - some magic required."""
+    def deactivate_plugin_app(self, force_reload: bool = False):
+        """Deactivate AppMixin plugins - some magic required.
+
+        Args:
+            force_reload (bool, optional): Also reload base apps. Defaults to False.
+        """
         # unregister models from admin
         for plugin_path in self.installed_apps:
             models = []  # the modelrefs need to be collected as poping an item in a iter is not welcomed
@@ -693,7 +706,7 @@ class PluginsRegistry:
 
         # reset load flag and reload apps
         settings.INTEGRATION_APPS_LOADED = False
-        self._reload_apps()
+        self._reload_apps(force_reload=force_reload)
 
         # update urls to remove the apps from the site admin
         self._update_urls()