allow None secret in SDKInstance init, in order to execute only query

Author: Tkd-Alex

src/sentinel_sdk/sdk.py

@@ -26,10 +26,15 @@ def __init__(self, grpcaddr: str, grpcport: int, secret: str = None, ssl: bool =
             self.__create_and_verify_channel(grpcaddr, grpcport, ssl=ssl)
         except grpc._channel._InactiveRpcError:
             raise ConnectionError("gRPC endpoint is invalid or not responding")
-        
-        self.__setup_account_and_client(grpcaddr, grpcport, secret, ssl)
+
+        self._client = None
+        self._account = None
+
+        if secret is not None:
+            self.__setup_account_and_client(grpcaddr, grpcport, secret, ssl)
+
         self.__load_modules()
-        
+
 
     def __create_and_verify_channel(
         self, grpcaddr: str, grpcport: int, ssl: bool = False
@@ -63,7 +68,7 @@ def __setup_account_and_client(self, grpcaddr: str, grpcport: int, secret: str,
                 bip44_def_ctx = Bip44.FromPrivateKey(bytes.fromhex(secret), Bip44Coins.COSMOS)
             except:
                 raise ValueError("Unrecognized secret either as a mnemonic or hex private key")
-            
+
         sha_key = SHA256.new()
         ripemd_key = RIPEMD160.new()
         sha_key.update(bip44_def_ctx.PublicKey().RawCompressed().m_data_bytes)
@@ -106,4 +111,3 @@ def __load_modules(self):
         self.swaps = SwapModule(self._channel, self._account, self._client)
 
 
-    

src/sentinel_sdk/transactor/transactor.py

@@ -19,15 +19,15 @@ def __init__(
     # We need to find a good way to this. **The method could return only the MsgRequest and type_url**
     # Who wants to submit the tx, can call transaction (we should also implement multi-add_raw_msg), one tx with multiple msg
 
-    def PrepareOrTransactMsg(   self, 
-                                msg: Any, 
+    def PrepareOrTransactMsg(   self,
+                                msg: Any,
                                 transact: bool = False,
                                 tx_params : TxParams = TxParams(),
                                 **kwargs):
         msg_args = {
             k: kwargs[k] for k in kwargs if k in ["address", "node_address", "id", "gigabytes", "hours", "rating", "denom"]
         }
-                                    
+
         msg_args['frm'] = self.__account.address
         prepared_msg = msg(**msg_args)
 
@@ -39,6 +39,9 @@ def transaction(
         messages: list,
         tx_params: TxParams = TxParams(),
     ) -> dict:
+        if self._account is None or self._client is None:
+            raise ValueError("Transactor was not initialized due missing secret, unable to transact")
+
         tx = Transaction(
             account=self._account,
             fee=Coin(denom=tx_params.denom, amount=f"{tx_params.fee_amount}"),
@@ -70,6 +73,9 @@ def transaction(
     def wait_transaction(
         self, tx_hash: str, timeout: float = 120, pool_period: float = 10
     ):
+        if self._account is None or self._client is None:
+            raise ValueError("Transactor was not initialized due missing secret, unable to wait transaction")
+
         start = time.time()
         while 1:
             try: