feat(docker-jans-link): add healthcheck support (#5777)

Signed-off-by: Mustafa Baser <mbaser@mail.com>

charts/janssen/charts/link/README.md

@@ -39,11 +39,11 @@ Kubernetes: `>=v1.21.0-0`
 | image.repository | string | `"ghcr.io/janssenproject/jans/link"` | Image  to use for deploying. |
 | image.tag | string | `"1.0.17_dev"` | Image  tag to use for deploying. |
 | lifecycle | object | `{}` |  |
-| livenessProbe | object | `{"httpGet":{"path":"/jans-link/api/v1/health/live","port":9091},"initialDelaySeconds":30,"periodSeconds":30,"timeoutSeconds":5}` | Configure the liveness healthcheck for the auth server if needed. |
-| livenessProbe.httpGet | object | `{"path":"/jans-link/api/v1/health/live","port":9091}` | Executes the python3 healthcheck. |
+| livenessProbe | object | `{"exec":{"command":["python3","/app/scripts/healthcheck.py"]},"initialDelaySeconds":30,"periodSeconds":30,"timeoutSeconds":5}` | Configure the liveness healthcheck for the link if needed. |
+| livenessProbe.exec | object | `{"command":["python3","/app/scripts/healthcheck.py"]}` | Executes the python3 healthcheck. |
 | nameOverride | string | `""` |  |
 | nodeSelector | object | `{}` |  |
-| readinessProbe | object | `{"httpGet":{"path":"/jans-link/api/v1/health/ready","port":9091},"initialDelaySeconds":25,"periodSeconds":25,"timeoutSeconds":5}` | Configure the readiness healthcheck for the auth server if needed. |
+| readinessProbe | object | `{"exec":{"command":["python3","/app/scripts/healthcheck.py"]},"initialDelaySeconds":25,"periodSeconds":25,"timeoutSeconds":5}` | Configure the readiness healthcheck for the link if needed. |
 | replicas | int | `1` | Service replica number. |
 | resources | object | `{"limits":{"cpu":"500m","memory":"1000Mi"},"requests":{"cpu":"500m","memory":"1000Mi"}}` | Resource specs. |
 | resources.limits.cpu | string | `"500m"` | CPU limit. |

charts/janssen/charts/link/values.yaml

@@ -57,20 +57,22 @@ service:
   sessionAffinityConfig:
     clientIP:
       timeoutSeconds: 10800
-# -- Configure the liveness healthcheck for the auth server if needed.
+# -- Configure the liveness healthcheck for the link if needed.
 livenessProbe:
   # -- Executes the python3 healthcheck.
-  httpGet:
-    path: /jans-link/api/v1/health/live
-    port: 9091
+  exec:
+    command:
+      - python3
+      - /app/scripts/healthcheck.py
   initialDelaySeconds: 30
   periodSeconds: 30
   timeoutSeconds: 5
-# -- Configure the readiness healthcheck for the auth server if needed.
+# -- Configure the readiness healthcheck for the link if needed.
 readinessProbe:
-  httpGet:
-    path: /jans-link/api/v1/health/ready
-    port: 9091
+  exec:
+    command:
+      - python3
+      - /app/scripts/healthcheck.py
   initialDelaySeconds: 25
   periodSeconds: 25
   timeoutSeconds: 5

docker-jans-link/Dockerfile

@@ -46,8 +46,8 @@ RUN wget -q https://maven.jans.io/maven/io/jans/jython-installer/${JYTHON_VERSIO
 # ====
 
 ENV CN_VERSION=1.0.17-SNAPSHOT
-ENV CN_BUILD_DATE='2023-07-13'
-ENV CN_SOURCE_URL=https://jenkins.jans.io/maven/io/jans/jans-link/${CN_VERSION}/jans-link-${CN_VERSION}.war
+ENV CN_BUILD_DATE='2023-08-03 16:58'
+ENV CN_SOURCE_URL=https://jenkins.jans.io/maven/io/jans/jans-link-server/${CN_VERSION}/jans-link-server-${CN_VERSION}.war
 
 RUN mkdir -p ${JETTY_BASE}/jans-link/webapps \
     && wget -q ${CN_SOURCE_URL} -O /tmp/jans-link.war \

docker-jans-link/scripts/healthcheck.py

@@ -0,0 +1,20 @@
+import sys
+
+import requests
+
+
+def main():
+    req = requests.get("http://0.0.0.0:9091/jans-link/sys/health-check")
+    if not req.ok:
+        sys.exit(1)
+
+    data = req.json()
+    if data["status"] == "running" and data["db_status"] == "online":
+        sys.exit(0)
+
+    # any other value will be considered as unhealthy
+    sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()