Fix: PineconeGrpcFuture blocks during construction

When using grpc with async_req, the construction of a
PineconeGrpcFuture would call _sync_state, which would do a blocking
call to grpc_future.exception(...). This means that the async_reqs
were all blocking in practice.

We can fix it by checking if the future is still running and not doing
any blocking calls when it is.

Author: yorickvP

pinecone/grpc/future.py

@@ -30,18 +30,16 @@ def _sync_state(self, grpc_future):
         if self.done():
             return
 
-        if grpc_future.cancelled():
+        if grpc_future.running():
+            self.set_running_or_notify_cancel()
+        elif grpc_future.cancelled():
             self.cancel()
-        elif grpc_future.exception(timeout=self._default_timeout):
-            self.set_exception(grpc_future.exception())
         elif grpc_future.done():
             try:
                 result = grpc_future.result(timeout=self._default_timeout)
                 self.set_result(result)
             except Exception as e:
                 self.set_exception(e)
-        elif grpc_future.running():
-            self.set_running_or_notify_cancel()
 
     def set_result(self, result):
         if self._result_transformer: