Reworked sdp

sdp/sheerkaSerializer.py

@@ -20,8 +20,8 @@ def json_default_converter(o):
 
 @dataclass()
 class SerializerContext:
-    user_name: str
-    origin: str
+    user_name: str = None
+    origin: str = None
 
 
 class Serializer:
@@ -37,7 +37,7 @@ class Serializer:
 
         # add builtin serializers
         self.register(EventSerializer())
-        self.register(PickleSerializer())
+        self.register(StateSerializer())
         self.register(ConceptSerializer())
 
     def register(self, serializer):
@@ -205,11 +205,12 @@ class ObjectSerializer(BaseSerializer):
 
 class PickleSerializer(BaseSerializer):
 
-    def __init__(self):
-        BaseSerializer.__init__(self, "P", 1)
+    def __init__(self, predicate, name="P", version=1):
+        BaseSerializer.__init__(self, name, version)
+        self.predicate = predicate
 
     def match(self, obj):
-        return BaseSerializer.get_full_qualified_name(obj) == "sdp.sheerkaDataProvider.State"
+        return self.predicate(obj)
 
     def dump(self, stream, obj, context):
         stream.write(pickle.dumps(obj))
@@ -220,6 +221,12 @@ class PickleSerializer(BaseSerializer):
         return pickle.loads(stream.read())
 
 
+class StateSerializer(PickleSerializer):
+    def __init__(self, ):
+        PickleSerializer.__init__(self, lambda obj: BaseSerializer.get_full_qualified_name(
+                                      obj) == "sdp.sheerkaDataProvider.State", "S", 1)
+
+
 class ConceptSerializer(ObjectSerializer):
     def __init__(self):
         ObjectSerializer.__init__(self, "core.concept.Concept", "C", 1)