Add instance deletion from itself

core/app/handlers/core.py

@@ -17,7 +17,7 @@ def create_room():
 
     # Create a pod
     containers = []
-    container1 = client.V1Container(name='instance', image=image)
+    container1 = client.V1Container(name='instance', image=image, env=[client.V1EnvVar(name="INSTANCE_NAME", value=pod_id), client.V1EnvVar(name="BACKEND_URL", value=os.environ["BACKEND_URL"])])
     containers.append(container1)
 
     pod_spec = client.V1PodSpec(containers=containers)

helm/templates/deployment.yaml

@@ -43,6 +43,10 @@ spec:
             value: "{{ .Values.ingress.name }}"
           - name: KUBERNETES_PORT
             value: "{{ .Values.service.port }}"
+          - name: BACKEND_URL
+            {{- with (index .Values.ingress.hosts 0) }}
+            value: {{ .host }}
+            {{- end }}
           ports:
             - name: http
               containerPort: 8000

instance/app/handlers/app.py

@@ -1,4 +1,6 @@
 import hug
+import requests
+import os
 
 messages = []
 
@@ -13,4 +15,11 @@ def pull():
 def publish(body):
     global messages
     messages.append(body["message"])
-    return f"Message published : {body['message']}"
+    return f"Message published : {body['message']}"
+
+@hug.post('/stop')
+def stop():
+    instance_name = os.environ["INSTANCE_NAME"]
+    backend_url = os.environ["BACKEND_URL"]
+    requests.post(f"{backend_url}/delete-room", data={"instance": instance_name})
+    return "deleted"

instance/requirements.txt

@@ -1,2 +1,3 @@
 hug == 2.4.8
-hug-middleware-cors == 1.0.0
+hug-middleware-cors == 1.0.0
+requests == 2.25.1