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fix(operator): Set appProtocol: grpc on registry gRPC Service #6367

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Merged
ntkathole merged 3 commits into from
May 22, 2026
Merged

fix(operator): Set appProtocol: grpc on registry gRPC Service #6367

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ba68eb0
fix(operator): set appProtocol: grpc on registry gRPC Service
tmvfb May 5, 2026
5e375c5
test(operator): add unit tests for getServiceAppProtocol
tmvfb May 22, 2026
3023c9f
chore: update secrets baseline for shifted line number in services.go
tmvfb May 22, 2026
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fix(operator): set appProtocol: grpc on registry gRPC Service 
Signed-off-by: Igor Kvachenok <igor.kvachenok@prokube.ai>
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@tmvfb @ntkathole
tmvfb authored and ntkathole committed May 22, 2026
commit ba68eb0b14de89b985df6ed3c6926b5b1278280d
21 changes: 17 additions & 4 deletions infra/feast-operator/internal/controller/services/services.go
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
"sigs.k8s.io/controller-runtime/pkg/log"
Expand Down Expand Up @@ -768,6 +769,17 @@ func (feast *FeastServices) setInitContainer(podSpec *corev1.PodSpec, fsYamlB64
}
}

// getServiceAppProtocol returns the appProtocol for a Service port.
// The registry gRPC service uses the gRPC protocol, which requires HTTP/2.
// Setting appProtocol allows service meshes (e.g. Istio) and load balancers
// to correctly classify the traffic and avoid downgrading to HTTP/1.1.
func (feast *FeastServices) getServiceAppProtocol(feastType FeastServiceType, isRestService bool) *string {
if feastType == RegistryFeastType && !isRestService && feast.isRegistryGrpcEnabled() {
return ptr.To("grpc")
}
return nil
}

func (feast *FeastServices) setService(svc *corev1.Service, feastType FeastServiceType, isRestService bool) error {
svc.Labels = feast.getFeastTypeLabels(feastType)
if feast.isOpenShiftTls(feastType) {
Expand Down Expand Up @@ -829,10 +841,11 @@ func (feast *FeastServices) setService(svc *corev1.Service, feastType FeastServi
Type: corev1.ServiceTypeClusterIP,
Ports: []corev1.ServicePort{
{
Name: scheme,
Port: port,
Protocol: corev1.ProtocolTCP,
TargetPort: intstr.FromInt(int(targetPort)),
Name: scheme,
Port: port,
Protocol: corev1.ProtocolTCP,
TargetPort: intstr.FromInt(int(targetPort)),
AppProtocol: feast.getServiceAppProtocol(feastType, isRestService),
},
},
}
Expand Down