Roll-back to previous BfxRestInterface.py code. Remove CID enforcement with generate_unique_cid. Fix small bug in Requests._POST method.

bfxapi/rest/BfxRestInterface.py

@@ -13,7 +13,6 @@ from .enums import Config, Sort, OrderType, FundingOfferType, Error
 from .exceptions import ResourceNotFound, RequestParametersError, InvalidAuthenticationCredentials, UnknownGenericError
 
 from .. utils.encoder import JSONEncoder
-from .. utils.cid import generate_unique_cid
 
 class BfxRestInterface(object):
     def __init__(self, host, API_KEY = None, API_SECRET = None):
@@ -28,10 +27,14 @@ class _Requests(object):
     def __build_authentication_headers(self, endpoint, data):
         nonce = str(int(time.time()) * 1000)
 
+        path = f"/api/v2/{endpoint}{nonce}"
+
+        if data != None: path += data
+
         signature = hmac.new(
             self.API_SECRET.encode("utf8"),
-            f"/api/v2/{endpoint}{nonce}{json.dumps(data)}".encode("utf8"),
-            hashlib.sha384
+            path.encode("utf8"),
+            hashlib.sha384 
         ).hexdigest()
 
         return {
@@ -42,7 +45,7 @@ class _Requests(object):
 
     def _GET(self, endpoint, params = None):
         response = requests.get(f"{self.host}/{endpoint}", params=params)
-
+        
         if response.status_code == HTTPStatus.NOT_FOUND:
             raise ResourceNotFound(f"No resources found at endpoint <{endpoint}>.")
 
@@ -60,11 +63,14 @@ class _Requests(object):
     def _POST(self, endpoint, params = None, data = None, _append_authentication_headers = True):
         headers = { "Content-Type": "application/json" }
 
+        if isinstance(data, dict):
+            data = json.dumps({ key: value for key, value in data.items() if value != None}, cls=JSONEncoder)
+
         if _append_authentication_headers:
             headers = { **headers, **self.__build_authentication_headers(endpoint, data) }
 
-        response = requests.post(f"{self.host}/{endpoint}", params=params, data=json.dumps(data, cls=JSONEncoder), headers=headers)
-
+        response = requests.post(f"{self.host}/{endpoint}", params=params, data=data, headers=headers)
+        
         if response.status_code == HTTPStatus.NOT_FOUND:
             raise ResourceNotFound(f"No resources found at endpoint <{endpoint}>.")
 
@@ -88,9 +94,9 @@ class _RestPublicEndpoints(_Requests):
 
     def get_tickers(self, symbols: List[str]) -> List[Union[TradingPairTicker, FundingCurrencyTicker]]:
         data = self._GET("tickers", params={ "symbols": ",".join(symbols) })
-
+        
         parsers = { "t": serializers.TradingPairTicker.parse, "f": serializers.FundingCurrencyTicker.parse }
-
+        
         return [ parsers[subdata[0][0]](*subdata) for subdata in data ]
 
     def get_t_tickers(self, pairs: Union[List[str], Literal["ALL"]]) -> List[TradingPairTicker]:
@@ -123,7 +129,7 @@ class _RestPublicEndpoints(_Requests):
         }
 
         data = self._GET("tickers/hist", params=params)
-
+        
         return [ serializers.TickersHistory.parse(*subdata) for subdata in data ]
 
     def get_t_trades(self, pair: str, limit: Optional[int] = None, start: Optional[str] = None, end: Optional[str] = None, sort: Optional[Sort] = None) -> List[TradingPairTrade]:
@@ -149,7 +155,7 @@ class _RestPublicEndpoints(_Requests):
         return [ serializers.FundingCurrencyRawBook.parse(*subdata) for subdata in self._GET(f"book/{'f' + currency}/R0", params={ "len": len }) ]
 
     def get_stats_hist(
-        self,
+        self, 
         resource: str,
         sort: Optional[Sort] = None, start: Optional[str] = None, end: Optional[str] = None, limit: Optional[int] = None
     ) -> List[Statistic]:
@@ -158,7 +164,7 @@ class _RestPublicEndpoints(_Requests):
         return [ serializers.Statistic.parse(*subdata) for subdata in data ]
 
     def get_stats_last(
-        self,
+        self, 
         resource: str,
         sort: Optional[Sort] = None, start: Optional[str] = None, end: Optional[str] = None, limit: Optional[int] = None
     ) -> Statistic:
@@ -192,10 +198,10 @@ class _RestPublicEndpoints(_Requests):
         return [ serializers.DerivativesStatus.parse(*subdata) for subdata in data ]
 
     def get_derivatives_status_history(
-        self,
+        self, 
         type: str, symbol: str,
         sort: Optional[Sort] = None, start: Optional[str] = None, end: Optional[str] = None, limit: Optional[int] = None
-    ) -> List[DerivativesStatus]:
+    ) -> List[DerivativesStatus]: 
         params = { "sort": sort, "start": start, "end": end, "limit": limit }
 
         data = self._GET(f"status/{type}/{symbol}/hist", params=params)
@@ -244,92 +250,39 @@ class _RestAuthenticatedEndpoints(_Requests):
     def get_orders(self, ids: Optional[List[str]] = None) -> List[Order]:
         return [ serializers.Order.parse(*subdata) for subdata in self._POST("auth/r/orders", data={ "id": ids }) ]
 
-    def submit_order(self, type: OrderType, symbol: str, amount: Union[Decimal, str],
-                     price: Optional[Union[Decimal, str]] = None, lev: Optional[int] = None,
+    def submit_order(self, type: OrderType, symbol: str, amount: Union[Decimal, str], 
+                     price: Optional[Union[Decimal, str]] = None, lev: Optional[int] = None, 
                      price_trailing: Optional[Union[Decimal, str]] = None, price_aux_limit: Optional[Union[Decimal, str]] = None, price_oco_stop: Optional[Union[Decimal, str]] = None,
-                     gid: Optional[int] = None,
+                     gid: Optional[int] = None, cid: Optional[int] = None,
                      flags: Optional[int] = 0, tif: Optional[Union[datetime, str]] = None, meta: Optional[JSON] = None) -> Notification:
-        cid = generate_unique_cid()
-
         data = {
-            "type": type, "symbol": symbol, "amount": str(amount), "price": str(price), "meta": meta, "cid": cid
+            "type": type, "symbol": symbol, "amount": amount,
+            "price": price, "lev": lev,
+            "price_trailing": price_trailing, "price_aux_limit": price_aux_limit, "price_oco_stop": price_oco_stop,
+            "gid": gid, "cid": cid,
+            "flags": flags, "tif": tif, "meta": meta
         }
-
-        # add extra parameters
-        if flags:
-            data["flags"] = flags
-
-        if price_trailing:
-            data["price_trailing"] = str(price_trailing)
-
-        if price_aux_limit:
-            data["price_aux_limit"] = str(price_aux_limit)
-
-        if price_oco_stop:
-            data["oco_stop_price"] = str(price_oco_stop)
-
-        if tif:
-            data["tif"] = str(tif)
-
-        if gid:
-            data["gid"] = gid
-
-        if lev:
-            data["lev"] = str(lev)
-
+        
         return serializers._Notification(serializer=serializers.Order).parse(*self._POST("auth/w/order/submit", data=data))
 
-    def update_order(self, id: int, amount: Optional[Union[Decimal, str]] = None,
-                     price: Optional[Union[Decimal, str]] = None,
+    def update_order(self, id: int, amount: Optional[Union[Decimal, str]] = None, price: Optional[Union[Decimal, str]] = None,
                      cid: Optional[int] = None, cid_date: Optional[str] = None, gid: Optional[int] = None,
                      flags: Optional[int] = 0, lev: Optional[int] = None, delta: Optional[Union[Decimal, str]] = None,
-                     price_aux_limit: Optional[Union[Decimal, str]] = None,
-                     price_trailing: Optional[Union[Decimal, str]] = None,
-                     tif: Optional[Union[datetime, str]] = None) -> Notification:
+                     price_aux_limit: Optional[Union[Decimal, str]] = None, price_trailing: Optional[Union[Decimal, str]] = None, tif: Optional[Union[datetime, str]] = None) -> Notification:
         data = {
-            "id": id
+            "id": id, "amount": amount, "price": price,
+            "cid": cid, "cid_date": cid_date, "gid": gid,
+            "flags": flags, "lev": lev, "delta": delta,
+            "price_aux_limit": price_aux_limit, "price_trailing": price_trailing, "tif": tif
         }
-
-        if amount:
-            data["amount"] = str(amount)
-
-        if price:
-            data["price"] = str(price)
-
-        if cid:
-            data["cid"] = cid
-
-        if cid_date:
-            data["cid_date"] = str(cid_date)
-
-        if gid:
-            data["gid"] = gid
-
-        if flags:
-            data["flags"] = flags
-
-        if lev:
-            data["lev"] = str(lev)
-
-        if delta:
-            data["deta"] = str(delta)
-
-        if price_aux_limit:
-            data["price_aux_limit"] = str(price_aux_limit)
-
-        if price_trailing:
-            data["price_trailing"] = str(price_trailing)
-
-        if tif:
-            data["tif"] = str(tif)
-
+        
         return serializers._Notification(serializer=serializers.Order).parse(*self._POST("auth/w/order/update", data=data))
 
     def cancel_order(self, id: Optional[int] = None, cid: Optional[int] = None, cid_date: Optional[str] = None) -> Notification:
-        data = {
-            "id": id,
-            "cid": cid,
-            "cid_date": cid_date
+        data = { 
+            "id": id, 
+            "cid": cid, 
+            "cid_date": cid_date 
         }
 
         return serializers._Notification(serializer=serializers.Order).parse(*self._POST("auth/w/order/cancel", data=data))
@@ -349,7 +302,7 @@ class _RestAuthenticatedEndpoints(_Requests):
         if symbol == None:
             endpoint = "auth/r/orders/hist"
         else: endpoint = f"auth/r/orders/{symbol}/hist"
-
+        
         data = {
             "id": ids,
             "start": start, "end": end,
@@ -383,7 +336,7 @@ class _RestAuthenticatedEndpoints(_Requests):
                              flags: Optional[int] = 0) -> Notification:
         data = {
             "type": type, "symbol": symbol, "amount": amount,
-            "rate": rate, "period": period,
+            "rate": rate, "period": period, 
             "flags": flags
         }