feat: initial server request implementation along with a demo operator (SessionGetInfo)

Related to #222

multi_user/handlers.py

@@ -79,6 +79,8 @@ def on_scene_update(scene):
             logging.debug(f"Ignoring distant update of {dependency_updates[0].id.name}")
             return
 
+        update_external_dependencies()
+
         # NOTE: maybe we don't need to check each update but only the first
         for update in reversed(dependency_updates):
             update_uuid = getattr(update.id, 'uuid', None)
@@ -107,11 +109,6 @@ def on_scene_update(scene):
                 porcelain.commit(session.repository, scn_uuid)
                 porcelain.push(session.repository, 'origin', scn_uuid)
 
-        scene_graph_changed = [u for u in reversed(dependency_updates) if getattr(u.id, 'uuid', None) and isinstance(u.id,(bpy.types.Scene,bpy.types.Collection))] 
-        if scene_graph_changed:
-            porcelain.purge_orphan_nodes(session.repository)
-
-        update_external_dependencies()
 
 @persistent
 def resolve_deps_graph(dummy):

multi_user/operators.py

@@ -689,6 +689,7 @@ class SessionPurgeOperator(bpy.types.Operator):
 
     def execute(self, context):
         try:
+            sanitize_deps_graph(remove_nodes=True)
             porcelain.purge_orphan_nodes(session.repository)
         except Exception as e:
             self.report({'ERROR'}, repr(e))
@@ -783,6 +784,22 @@ class SessionStopAutoSaveOperator(bpy.types.Operator):
 
         return {'FINISHED'}
 
+class SessionGetInfo(bpy.types.Operator):
+    bl_idname = "session.get_info"
+    bl_label = "Get session info"
+    bl_description = "Get session info"
+
+    target_server: bpy.props.StringProperty(default="127.0.0.1:5555")
+
+    @classmethod
+    def poll(cls, context):
+        return (session.state != STATE_ACTIVE)
+
+    def execute(self, context):
+        infos = porcelain.request_session_info(self.target_server, timeout=100)
+        logging.info(f"Session info: {infos}")
+
+        return {'FINISHED'}
 
 class SessionLoadSaveOperator(bpy.types.Operator, ImportHelper):
     bl_idname = "session.load"
@@ -921,6 +938,7 @@ classes = (
     SessionPurgeOperator,
     SessionPresetServerAdd,
     SessionPresetServerRemove,
+    SessionGetInfo,
 )