Add support for key-based authentication

Signed-off-by: Mathias L. Baumann <[email protected]>

Author: Marenz

pyproject.toml

@@ -42,7 +42,7 @@ dependencies = [
   "frequenz-sdk == 1.0.0rc601",
   "frequenz-channels >= 1.0.1, < 2.0.0",
   "frequenz-api-dispatch >= 0.13.0, < 0.14",
-  "frequenz-client-dispatch >= 0.2.0, < 0.3.0",
+  "frequenz-client-dispatch >= 0.4.0, < 0.5.0",
   "frequenz-client-base >= 0.3.0, < 0.5.0",
   "frequenz-client-common >= 0.1.0, < 0.3.0",
 ]

src/frequenz/dispatch/_dispatcher.py

@@ -175,20 +175,26 @@ async def run():
     """
 
     def __init__(
-        self, microgrid_id: int, grpc_channel: grpc.aio.Channel, svc_addr: str
+        self,
+        *,
+        microgrid_id: int,
+        grpc_channel: grpc.aio.Channel,
+        svc_addr: str,
+        key: str,
     ):
         """Initialize the dispatcher.
 
         Args:
             microgrid_id: The microgrid id.
             grpc_channel: The gRPC channel.
             svc_addr: The service address.
+            key: The key to access the service.
         """
         self._running_state_channel = Broadcast[Dispatch](name="running_state_change")
         self._lifecycle_events_channel = Broadcast[DispatchEvent](
             name="lifecycle_events"
         )
-        self._client = Client(grpc_channel, svc_addr)
+        self._client = Client(grpc_channel=grpc_channel, svc_addr=svc_addr, key=key)
         self._actor = DispatchingActor(
             microgrid_id,
             self._client,