feat: add hpa and resources limits

setup.py

@@ -44,7 +44,7 @@ def load_about():
     packages=find_packages(exclude=["tests*"]),
     include_package_data=True,
     python_requires=">=3.8",
-    install_requires=["tutor"],
+    install_requires=["tutor<16.0.0"],
     entry_points={"tutor.plugin.v1": ["codejail = tutorcodejail.plugin"]},
     classifiers=[
         "Development Status :: 3 - Alpha",

tutorcodejail/patches/k8s-deployments

@@ -27,6 +27,13 @@ spec:
             - mountPath: /openedx/codejailservice/codejailservice/tutor.py
               name: settings-codejail
               subPath: tutor.py
+          resources:
+            limits:
+              cpu: "{{ CODEJAIL_LIMIT_CPU }}"
+              memory: "{{ CODEJAIL_LIMIT_MEMORY }}"
+            requests:
+              cpu: "{{ CODEJAIL_REQUEST_CPU }}"
+              memory: "{{ CODEJAIL_REQUEST_MEMORY }}"
       volumes:
         - name: settings-codejail
           configMap:

tutorcodejail/patches/kustomization-resources

@@ -0,0 +1 @@
+- plugins/codejail/k8s/hpa.yml

tutorcodejail/plugin.py

@@ -21,6 +21,15 @@
         "HOST": "codejailservice",
         "SANDBOX_PYTHON_VERSION": "3.8.6",
         "SKIP_INIT": False,
+        "LIMIT_CPU": "1",
+        "LIMIT_MEMORY": "1Gi",
+        "REQUEST_CPU": "512m",
+        "REQUEST_MEMORY": "512Mi",
+        "ENABLE_HPA": False,
+        "MIN_REPLICAS": 1,
+        "MAX_REPLICAS": 4,
+        "AVG_CPU": 65,
+        "AVG_MEMORY": "500Mi",
     },
     "overrides": {},
 }
@@ -82,6 +91,7 @@
     [
         ("codejail/build", "plugins"),
         ("codejail/apps", "plugins"),
+        ("codejail/k8s", "plugins"),
     ],
 )
 # Load patches from files

tutorcodejail/templates/codejail/k8s/hpa.yml

@@ -0,0 +1,32 @@
+{%- if CODEJAIL_ENABLE_HPA %}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: codejail
+  labels:
+    app.kubernetes.io/name: codejail
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: codejailservice
+  minReplicas: {{ CODEJAIL_MIN_REPLICAS }}
+  maxReplicas: {{ CODEJAIL_MAX_REPLICAS }}
+  metrics:
+  {%- if CODEJAIL_AVG_CPU > 0 %}
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: {{ CODEJAIL_AVG_CPU }}
+  {%- endif %}
+  {%- if CODEJAIL_AVG_MEMORY|length %}
+  - type: Resource
+    resource:
+      name: memory
+      target:
+        type: AverageValue
+        averageValue: {{ CODEJAIL_AVG_MEMORY }}
+  {%- endif %}
+{%- endif %}