Merge pull request #110 from michael-james-holloway/add_errorf

Add `status.Errorf` to the gRPC Wrappers

Author: knz

grpc/status/status.go

@@ -11,10 +11,18 @@ func Error(c codes.Code, msg string) error {
 	return extgrpc.WrapWithGrpcCode(errors.New(msg), c)
 }
 
+func Errorf(c codes.Code, format string, args ...interface{}) error {
+	return extgrpc.WrapWithGrpcCode(errors.Newf(format, args...), c)
+}
+
 func WrapErr(c codes.Code, msg string, err error) error {
 	return extgrpc.WrapWithGrpcCode(errors.WrapWithDepth(1, err, msg), c)
 }
 
+func WrapErrf(c codes.Code, err error, format string, args ...interface{}) error {
+	return extgrpc.WrapWithGrpcCode(errors.WrapWithDepthf(1, err, format, args...), c)
+}
+
 func Code(err error) codes.Code {
 	return extgrpc.GetGrpcCode(err)
 }