feat: import handlers if not already imported

Signed-off-by: Colton Wolkins (Laptop) <[email protected]>

Author: TheTechmage

acapy_agent/core/dispatcher.py

@@ -256,7 +256,7 @@ async def make_v2_message(self, profile: Profile, parsed_msg: dict) -> BaseMessa
             #instance = message_cls[0] #message_cls.deserialize(parsed_msg)
             instance = registry.handlers[message_cls[0]]
             if isinstance(instance, DeferLoad):
-                instance = message_cls.resolved
+                instance = instance.resolved
         except BaseModelError as e:
             if "/problem-report" in message_type:
                 raise ProblemReportParseError("Error parsing problem report message")

acapy_agent/didcomm_v2/protocol_registry.py

@@ -1,6 +1,7 @@
 """Registry for DIDComm V2 Protocols."""
 
-from typing import Coroutine, Dict, Sequence
+from ..utils.classloader import DeferLoad
+from typing import Coroutine, Dict, Sequence, Union
 
 
 class V2ProtocolRegistry:
@@ -35,6 +36,8 @@ def protocols_matching_query(self, query: str) -> Sequence[str]:
                 result = (query,)
         return result or ()
 
-    def register_handler(self, message_type: str, handler: Coroutine):
+    def register_handler(self, message_type: str, handler: Union[Coroutine, str]):
         """Register a new message type to handler association."""
+        if isinstance(handler, str):
+                handler = DeferLoad(handler)
         self._type_to_message_handler[message_type] = handler