helm support for EPP standalone mode with Envoy Proxy

config/charts/inferencepool/templates/_helpers.tpl

@@ -31,3 +31,17 @@ Selector labels
 {{- define "gateway-api-inference-extension.selectorLabels" -}}
 inferencepool: {{ include "gateway-api-inference-extension.name" . }}
 {{- end -}}
+
+{{/*
+Envoy Common labels
+*/}}
+{{- define "gateway-api-inference-extension.envoy-labels" -}}
+app.kubernetes.io/name: {{ include "gateway-api-inference-extension.name" . }}-envoy
+{{- end }}
+
+{{/*
+Envoy Selector labels
+*/}}
+{{- define "gateway-api-inference-extension.envoy-selectorLabels" -}}
+envoy: {{ include "gateway-api-inference-extension.name" . }}-envoy
+{{- end }}

config/charts/inferencepool/templates/envoy-service.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.provider.standalone }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "gateway-api-inference-extension.name" . }}-envoy
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "gateway-api-inference-extension.envoy-labels" . | nindent 4 }}
+spec:
+  selector:
+    {{- include "gateway-api-inference-extension.envoy-selectorLabels" . | nindent 4 }}
+  ports:
+    - name: http
+      port: {{ .Values.provider.standalone.envoy.servicePort | default 8081 }}
+      protocol: TCP
+      targetPort: {{ .Values.provider.standalone.envoy.servicePort | default 8081 }}
+  type: ClusterIP
+{{- end }}

config/charts/inferencepool/templates/epp-deployment.yaml

@@ -1,3 +1,5 @@
+{{- if ne (lower .Values.provider.name) "standalone" }}
+ ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -151,3 +153,4 @@ spec:
       tolerations:
         {{- toYaml .Values.inferenceExtension.tolerations | nindent 8 }}
       {{- end }}
+{{- end }}