Report session stop reason

iso15118/secc/controller/interface.py

@@ -871,3 +871,10 @@ def ready_to_charge(self) -> bool:
         ready to start charging.
         """
         raise NotImplementedError
+
+    @abstractmethod
+    async def session_ended(self, current_state: str, reason: str):
+        """
+        Indicate the reason for stopping charging.
+        """
+        raise NotImplementedError

iso15118/secc/controller/simulator.py

@@ -1144,3 +1144,13 @@ def ready_to_charge(self) -> bool:
         Overrides EVSEControllerInterface.ready_to_charge().
         """
         return True
+
+    async def session_ended(self, current_state: str, reason: str):
+        """
+        Reports the state and reason where the session ended.
+
+        @param current_state: The current SDP/SAP/DIN/ISO15118-2/ISO15118-20 state.
+        @param reason: Reason for ending the session.
+        @param last_message: The last message that was either sent/received.
+        """
+        logger.info(f"Session ended in {current_state} ({reason}).")

iso15118/shared/comm_session.py

@@ -407,6 +407,7 @@ async def stop(self, reason: str):
         if hasattr(self.comm_session, "evse_controller"):
             evse_controller = self.comm_session.evse_controller
             await evse_controller.update_data_link(terminate_or_pause)
+            await evse_controller.session_ended(str(self.current_state), reason)
         logger.info(f"{terminate_or_pause}d the data link")
         await asyncio.sleep(3)
         try: