added health endpoint

Author: sbussweiler

kotlin-wot-integration-wot-agent/build.gradle.kts

@@ -19,6 +19,7 @@ dependencies {
 
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-webflux")
+    implementation("org.springframework.boot:spring-boot-starter-actuator")
 
     implementation("ai.ancf.lmos:arc-azure-client:0.111.0")
 }

kotlin-wot-integration-wot-agent/src/main/helm/templates/deployment.yaml

@@ -17,6 +17,7 @@ spec:
       {{- with .Values.podAnnotations }}
       annotations:
         {{- toYaml . | nindent 8 }}
+        deploymentTimestamp: "{{ now | date "2006-01-02T15:04:05Z07:00" }}"
       {{- end }}
       labels:
         {{- include "wot-agent.labels" . | nindent 8 }}
@@ -46,9 +47,25 @@ spec:
               containerPort: {{ .Values.service.port }}
               protocol: TCP
           livenessProbe:
-            {{- toYaml .Values.livenessProbe | nindent 12 }}
+            httpGet:
+              path: /health
+              port: 9090
+              scheme: HTTP
+            initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+            timeoutSeconds: {{ .Values.livenessProbe.timeoutSeconds }}
+            successThreshold: {{ .Values.livenessProbe.successThreshold }}
+            failureThreshold: {{ .Values.livenessProbe.failureThreshold }}
           readinessProbe:
-            {{- toYaml .Values.readinessProbe | nindent 12 }}
+            httpGet:
+              path: /health
+              port: 9090
+              scheme: HTTP
+            initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+            timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+            successThreshold: {{ .Values.readinessProbe.successThreshold }}
+            failureThreshold: {{ .Values.readinessProbe.failureThreshold }}
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
           {{- with .Values.volumeMounts }}

kotlin-wot-integration-wot-agent/src/main/helm/templates/service.yaml

@@ -4,12 +4,21 @@ metadata:
   name: {{ include "wot-agent.fullname" . }}
   labels:
     {{- include "wot-agent.labels" . | nindent 4 }}
+    wot-agent: "true"
 spec:
   type: {{ .Values.service.type }}
   ports:
     - port: {{ .Values.service.port }}
       targetPort: {{ .Values.service.port }}
       protocol: TCP
-      name: http
+      name: http-wot
+    - port: 8181
+      targetPort: 8181
+      protocol: TCP
+      name: http-capabilities
+    - port: 9090
+      targetPort: 9090
+      protocol: TCP
+      name: http-health
   selector:
     {{- include "wot-agent.selectorLabels" . | nindent 4 }}

kotlin-wot-integration-wot-agent/src/main/helm/values.yaml

@@ -86,6 +86,20 @@ resources: {}
 #  periodSeconds: 10
 #  failureThreshold: 3
 
+livenessProbe:
+  initialDelaySeconds: 1
+  periodSeconds: 15
+  timeoutSeconds: 5
+  successThreshold: 1
+  failureThreshold: 6
+
+readinessProbe:
+  initialDelaySeconds: 1
+  periodSeconds: 15
+  timeoutSeconds: 1
+  successThreshold: 1
+  failureThreshold: 3
+
 autoscaling:
   enabled: false
   minReplicas: 1

kotlin-wot-integration-wot-agent/src/main/resources/application.yaml

@@ -35,3 +35,22 @@ wot:
         host: localhost
         port: 54801
         clientId: wot-client
+
+management:
+  server:
+    port: 9090
+  endpoints:
+    web:
+      base-path: /
+      exposure:
+        include: prometheus,metrics,info,health
+  endpoint:
+    metrics:
+      access: read_only
+    health:
+      probes:
+        enabled: true
+  prometheus:
+    metrics:
+      export:
+        enabled: true