remove /flows endpoint and add hook

rasa/plugin.py

@@ -11,8 +11,11 @@
 from rasa.shared.nlu.training_data.message import Message
 
 if TYPE_CHECKING:
+    from sanic import Sanic
+
     from rasa.core.brokers.broker import EventBroker
     from rasa.core.tracker_store import TrackerStore
+    from rasa.core.utils import AvailableEndpoints
     from rasa.engine.graph import SchemaNode
     from rasa.shared.core.domain import Domain
     from rasa.utils.endpoints import EndpointConfig
@@ -150,6 +153,14 @@ def get_license_hash() -> Optional[Text]:
     """Hook specification for getting the license hash."""
 
 
+@hookspec  # type: ignore[misc]
+def configure_server(app: "Sanic", auth_token: Optional[Text], endpoints: Optional["AvailableEndpoints"]) -> None:
+    """Hook specification for configuring the server.
+
+    Use this hook to add extra configuration on the server.
+    """
+
+
 @hookspec  # type: ignore[misc]
 def after_server_stop() -> None:
     """Hook specification for stopping the server.

rasa/server.py

@@ -34,6 +34,7 @@
 import rasa
 import rasa.core.utils
 from rasa.nlu.emulators.emulator import Emulator
+from rasa.plugin import plugin_manager
 import rasa.utils.common
 import rasa.shared.utils.common
 import rasa.shared.utils.io
@@ -1372,14 +1373,6 @@ async def unload_model(request: Request) -> HTTPResponse:
         logger.debug(f"Successfully unloaded model '{model_file}'.")
         return response.json(None, status=HTTPStatus.NO_CONTENT)
 
-    @app.get("/flows")
-    @requires_auth(app, auth_token)
-    async def get_flows(request: Request) -> HTTPResponse:
-        """Get all the flows currently stored by the agent."""
-        processor = app.ctx.agent.processor
-        flows = processor.get_flows()
-        return response.json(flows.as_json())
-
     @app.get("/domain")
     @requires_auth(app, auth_token)
     @ensure_loaded_agent(app)
@@ -1407,6 +1400,7 @@ async def get_domain(request: Request) -> HTTPResponse:
                 f"header.",
             )
 
+    plugin_manager().hook.configure_server(app, auth_token, endpoints)
     return app