Add an RPC to get currently logged in fingerprint (#9436)

* Added /get_fingerprint to wallet RPC

* Added to client too

* return only the fingerprint

* Change RPC name

* Added test

chia/rpc/wallet_rpc_api.py

@@ -52,6 +52,7 @@ class WalletRpcApi:
         return {
             # Key management
             "/log_in": self.log_in,
+            "/get_logged_in_fingerprint": self.get_logged_in_fingerprint,
             "/get_public_keys": self.get_public_keys,
             "/get_private_key": self.get_private_key,
             "/generate_mnemonic": self.generate_mnemonic,
@@ -195,6 +196,9 @@ class WalletRpcApi:
 
         return {"success": False, "error": "Unknown Error"}
 
+    async def get_logged_in_fingerprint(self, request: Dict):
+        return {"fingerprint": self.service.logged_in_fingerprint}
+
     async def get_public_keys(self, request: Dict):
         try:
             assert self.service.keychain_proxy is not None  # An offering to the mypy gods

chia/rpc/wallet_rpc_client.py

@@ -53,6 +53,9 @@ class WalletRpcClient(RpcClient):
         except ValueError as e:
             return e.args[0]
 
+    async def get_logged_in_fingerprint(self) -> int:
+        return (await self.fetch("get_logged_in_fingerprint", {}))["fingerprint"]
+
     async def get_public_keys(self) -> List[int]:
         return (await self.fetch("get_public_keys", {}))["public_key_fingerprints"]
 

tests/wallet/rpc/test_wallet_rpc.py

@@ -246,6 +246,8 @@ class TestWalletRpc:
             await client.log_in_and_skip(pks[1])
             sk_dict = await client.get_private_key(pks[1])
             assert sk_dict["fingerprint"] == pks[1]
+            fingerprint = await client.get_logged_in_fingerprint()
+            assert fingerprint == pks[1]
 
             # Add in reward addresses into farmer and pool for testing delete key checks
             # set farmer to first private key