fix: Explicitly translate errors when instantiating the go fs (#2842)

* fix: Explicitly translate errors when instantiating the go fs and convert bool params

Signed-off-by: Achal Shah <[email protected]>

* uncomment more

Signed-off-by: Achal Shah <[email protected]>

Author: achals

go/embedded/online_features.go

@@ -32,6 +32,8 @@ type OnlineFeatureService struct {
 	fs         *feast.FeatureStore
 	grpcStopCh chan os.Signal
 	httpStopCh chan os.Signal
+
+	err error
 }
 
 type OnlineFeatureServiceConfig struct {
@@ -56,12 +58,16 @@ type LoggingOptions struct {
 func NewOnlineFeatureService(conf *OnlineFeatureServiceConfig, transformationCallback transformation.TransformationCallback) *OnlineFeatureService {
 	repoConfig, err := registry.NewRepoConfigFromJSON(conf.RepoPath, conf.RepoConfig)
 	if err != nil {
-		log.Fatalln(err)
+		return &OnlineFeatureService{
+			err: err,
+		}
 	}
 
 	fs, err := feast.NewFeatureStore(repoConfig, transformationCallback)
 	if err != nil {
-		log.Fatalln(err)
+		return &OnlineFeatureService{
+			err: err,
+		}
 	}
 
 	// Notify these channels when receiving interrupt or termination signals from OS
@@ -121,6 +127,10 @@ func (s *OnlineFeatureService) GetEntityTypesMapByFeatureService(featureServiceN
 	return joinKeyTypes, nil
 }
 
+func (s *OnlineFeatureService) CheckForInstantiationError() error {
+	return s.err
+}
+
 func (s *OnlineFeatureService) GetOnlineFeatures(
 	featureRefs []string,
 	featureServiceName string,

sdk/python/feast/embedded_go/online_features_service.py

@@ -1,4 +1,3 @@
-import faulthandler
 from functools import partial
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union
@@ -46,13 +45,16 @@ def __init__(
         self._transformation_callback = partial(transformation_callback, feature_store)
         self._logging_callback = partial(logging_callback, feature_store)
 
+        self._config = OnlineFeatureServiceConfig(
+            RepoPath=repo_path, RepoConfig=repo_config.json()
+        )
+
         self._service = NewOnlineFeatureService(
-            OnlineFeatureServiceConfig(
-                RepoPath=repo_path, RepoConfig=repo_config.json()
-            ),
-            self._transformation_callback,
+            self._config, self._transformation_callback,
         )
-        faulthandler.enable()
+
+        # This should raise an exception if there were any errors in NewOnlineFeatureService.
+        self._service.CheckForInstantiationError()
 
     def get_online_features(
         self,
@@ -244,6 +246,10 @@ def transformation_callback(
 
     input_record = pa.RecordBatch._import_from_c(input_arr_ptr, input_schema_ptr)
 
+    # For some reason, the callback is called with `full_feature_names` as a 1 if True or 0 if false. This handles
+    # the typeguard requirement.
+    full_feature_names = bool(full_feature_names)
+
     output = odfv.get_transformed_features_df(
         input_record.to_pandas(), full_feature_names=full_feature_names
     )

sdk/python/tests/integration/e2e/test_go_feature_server.py

@@ -122,7 +122,7 @@ def grpc_client(grpc_server_port):
 
 
 @pytest.mark.integration
-# @pytest.mark.goserver Disabling because the go fs tests are flaking in CI. TODO(achals): uncomment after fixed.
+@pytest.mark.goserver
 def test_go_grpc_server(grpc_client):
     resp: GetOnlineFeaturesResponse = grpc_client.GetOnlineFeatures(
         GetOnlineFeaturesRequest(
@@ -148,7 +148,7 @@ def test_go_grpc_server(grpc_client):
 
 
 @pytest.mark.integration
-# @pytest.mark.goserver Disabling because the go fs tests are flaking in CI. TODO(achals): uncomment after fixed.
+@pytest.mark.goserver
 def test_go_http_server(http_server_port):
     response = requests.post(
         f"http://localhost:{http_server_port}/get-online-features",
@@ -186,7 +186,7 @@ def test_go_http_server(http_server_port):
 
 
 @pytest.mark.integration
-# @pytest.mark.goserver Disabling because the go fs tests are flaking in CI. TODO(achals): uncomment after fixed.
+@pytest.mark.goserver
 @pytest.mark.universal_offline_stores
 @pytest.mark.parametrize("full_feature_names", [True, False], ids=lambda v: str(v))
 def test_feature_logging(

sdk/python/tests/integration/online_store/test_universal_online.py

@@ -443,7 +443,7 @@ def test_online_retrieval_with_event_timestamps(
 
 @pytest.mark.integration
 @pytest.mark.universal_online_stores
-# @pytest.mark.goserver Disabling because the go fs tests are flaking in CI. TODO(achals): uncomment after fixed.
+@pytest.mark.goserver
 @pytest.mark.parametrize("full_feature_names", [True, False], ids=lambda v: str(v))
 def test_stream_feature_view_online_retrieval(
     environment, universal_data_sources, feature_server_endpoint, full_feature_names
@@ -519,7 +519,7 @@ def test_stream_feature_view_online_retrieval(
 
 @pytest.mark.integration
 @pytest.mark.universal_online_stores
-# @pytest.mark.goserver Disabling because the go fs tests are flaking in CI. TODO(achals): uncomment after fixed.
+@pytest.mark.goserver
 @pytest.mark.parametrize("full_feature_names", [True, False], ids=lambda v: str(v))
 def test_online_retrieval(
     environment, universal_data_sources, feature_server_endpoint, full_feature_names