feat(preview-service): allow metrics port to be configured (#2421)

* feat(preview-service): allow metrics port to be configured

* Allow configurable port

packages/preview-service/bin/www

@@ -83,7 +83,7 @@ function onError(error) {
 
 function onListening() {
   const addr = server.address()
-  const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port
+  const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr?.port
   serverLogger.info('Listening on ' + bind)
 
   startPreviewService()

utils/helm/speckle-server/templates/preview_service/deployment.yml

@@ -25,7 +25,7 @@ spec:
 
         ports:
           - name: metrics
-            containerPort: 9094
+            containerPort: {{ .Values.preview_service.monitoring.metricsPort }}
             protocol: TCP
 
         livenessProbe:
@@ -62,6 +62,12 @@ spec:
         {{- end }}
 
         env:
+          - name: PORT
+            value: {{ .Values.preview_service.port | quote }}
+
+          - name: PROMETHEUS_METRICS_PORT
+            value: {{ .Values.preview_service.monitoring.metricsPort | quote }}
+
           - name: PG_CONNECTION_STRING
             valueFrom:
               secretKeyRef:

utils/helm/speckle-server/templates/preview_service/service.yml

@@ -12,5 +12,5 @@ spec:
   ports:
     - protocol: TCP
       name: web
-      port: 9094
+      port: {{ .Values.preview_service.monitoring.metricsPort }}
       targetPort: metrics

utils/helm/speckle-server/values.schema.json

@@ -1601,6 +1601,21 @@
           "description": "The Docker image to be used for the Speckle Preview Service component. If blank, defaults to speckle/speckle-preview-service:{{ .Values.docker_image_tag }}. If provided, this value should be the full path including tag. The docker_image_tag value will be ignored.",
           "default": ""
         },
+        "port": {
+          "type": "string",
+          "description": "The port on which the Preview Service will run. This is not exposed, but used within its own local network within the pod.",
+          "default": "3001"
+        },
+        "monitoring": {
+          "type": "object",
+          "properties": {
+            "metricsPort": {
+              "type": "string",
+              "description": "The port on which the metrics server will be exposed.",
+              "default": "9094"
+            }
+          }
+        },
         "requests": {
           "type": "object",
           "properties": {

utils/helm/speckle-server/values.yaml

@@ -1022,6 +1022,13 @@ preview_service:
   ##
   image: ''
 
+  ## @param preview_service.port The port on which the Preview Service will run. This is not exposed, but used within its own local network within the pod.
+  port: '3001'
+
+  monitoring:
+    ## @param preview_service.monitoring.metricsPort The port on which the metrics server will be exposed.
+    metricsPort: '9094'
+
   requests:
     ## @param preview_service.requests.cpu The CPU that should be available on a node when scheduling this pod.
     ## ref: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/