From 4103bc151d5e035b23ac51529c1007f0a5e7e059 Mon Sep 17 00:00:00 2001
From: w-h37 <47009048+w-h37@users.noreply.github.com>
Date: Thu, 1 Aug 2024 08:44:21 -0400
Subject: [PATCH] Changes for the helm chart added, specifically allowing users
 to opt-in for access to the Go Plugin Filter Metrics

Signed-off-by: w-h37 <47009048+w-h37@users.noreply.github.com>
---
 charts/emissary-ingress/templates/admin-service.yaml | 6 ++++++
 charts/emissary-ingress/templates/deployment.yaml    | 8 ++++++++
 charts/emissary-ingress/values.yaml.in               | 1 +
 3 files changed, 15 insertions(+)

diff --git a/charts/emissary-ingress/templates/admin-service.yaml b/charts/emissary-ingress/templates/admin-service.yaml
index 77f628459f..715d424849 100644
--- a/charts/emissary-ingress/templates/admin-service.yaml
+++ b/charts/emissary-ingress/templates/admin-service.yaml
@@ -32,6 +32,12 @@ spec:
       {{- if (and (eq .Values.adminService.type "NodePort") (not (empty .Values.adminService.nodePort))) }}
       nodePort: {{ int .Values.adminService.nodePort }}
       {{- end }}
+      {{- if .Values.adminService.goPluginMetricsPort}}
+    - port: {{ .Values.adminService.goPluginMetricsPort }}
+      targetPort: 8878
+      protocol: TCP
+      name: go-plugin-filter-metrics
+      {{- end }}
     - port: {{ .Values.adminService.snapshotPort }}
       targetPort: 8005
       protocol: TCP
diff --git a/charts/emissary-ingress/templates/deployment.yaml b/charts/emissary-ingress/templates/deployment.yaml
index 2c4d17a0a1..3418d4f08e 100644
--- a/charts/emissary-ingress/templates/deployment.yaml
+++ b/charts/emissary-ingress/templates/deployment.yaml
@@ -215,7 +215,15 @@ spec:
             {{- end}}
             - name: admin
               containerPort: {{ .Values.adminService.port }}
+            {{- if .Values.adminService.goPluginMetricsPort}}
+            - name: go-plugin-metrics-port
+              containerPort: {{ .Values.adminService.goPluginMetricsPort}}
+            {{- end}}
           env:
+            {{- if .Values.adminService.goPluginMetricsPort}}
+            - name: ENABLE_PLUGIN_FILTER_METRICS
+              value: "true"
+            {{- end }}
             {{- if .Values.prometheusExporter.enabled }}
             - name: STATSD_ENABLED
               value: "true"
diff --git a/charts/emissary-ingress/values.yaml.in b/charts/emissary-ingress/values.yaml.in
index 0f5052c35e..aba5dc4b57 100644
--- a/charts/emissary-ingress/values.yaml.in
+++ b/charts/emissary-ingress/values.yaml.in
@@ -208,6 +208,7 @@ adminService:
   type: ClusterIP
   port: 8877
   snapshotPort: 8005
+  goPluginMetricsPort: 
   # If explicit NodePort for admin service is required
   nodePort:
   # Annotations to apply to Ambassador admin service