Wrap API calls in helper and validate response

core/exchanges/oanda.py

@@ -2,9 +2,15 @@ from oandapyV20 import API
 from oandapyV20.endpoints import accounts, orders, positions, trades
 
 from core.exchanges import BaseExchange
+from core.lib.schemas import oanda_s
+
+OANDA_SCHEMA_MAPPING = {}
 
 
 class OANDAExchange(BaseExchange):
+    def set_schema(self):
+        self.schema = OANDA_SCHEMA_MAPPING
+
     def connect(self):
         self.client = API(access_token=self.account.api_secret)
         self.account_id = self.account.api_key
@@ -53,4 +59,4 @@ class OANDAExchange(BaseExchange):
     def get_all_positions(self):
         r = positions.OpenPositions(accountID=self.account_id)
         self.client.request(r)
-        return r.response["positions"]
+        return (True, [])