bitbake: hashserv: Add db-usage API

Adds an API to query the server for the usage of the database (e.g. how
many rows are present in each table)

(Bitbake rev: c9c1224447e147e0de92953bc85cea75670b898c)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/hashserv/client.py

@@ -186,6 +186,10 @@ class AsyncClient(bb.asyncrpc.AsyncClient):
             self.saved_become_user = username
         return result
 
+    async def get_db_usage(self):
+        await self._set_mode(self.MODE_NORMAL)
+        return (await self.invoke({"get-db-usage": {}}))["usage"]
+
 
 class Client(bb.asyncrpc.Client):
     def __init__(self, username=None, password=None):
@@ -214,6 +218,7 @@ class Client(bb.asyncrpc.Client):
             "new_user",
             "delete_user",
             "become_user",
+            "get_db_usage",
         )
 
     def _get_async_client(self):