greenwave: add memcached pod in OpenShift

roles/openshift-apps/greenwave/files/deploymentconfig.yml

@@ -115,4 +115,32 @@ spec:
         kind: ImageStreamTag
         name: greenwave:latest
   - type: ConfigChange
- 
+---
+# For memcached
+apiVersion: v1
+kind: DeploymentConfig
+metadata:
+  name: greenwave-memcached
+  labels:
+    app: greenwave
+    service: greenwave-memcached
+spec:
+  replicas: 1
+  selector:
+    service: greenwave-memcached
+  template:
+    metadata:
+      labels:
+        app: greenwave
+        service: greenwave-memcached
+    spec:
+      containers:
+      - name: greenwave-memcached
+        image: registry.fedoraproject.org/memcached:26
+        ports:
+        - containerPort: 11211
+        resources:
+          limits:
+            memory: 384Mi
+  triggers:
+  - type: ConfigChange

roles/openshift-apps/greenwave/files/service.yml

@@ -28,3 +28,18 @@ spec:
   - name: fedmsg-consumers
     port: 8081
     targetPort: 8081
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: greenwave-memcached
+  labels:
+    app: greenwave
+spec:
+  selector:
+    app: greenwave
+    service: greenwave-memcached
+  ports:
+  - name: greenwave-memcached
+    port: 11211
+    targetPort: 11211

roles/openshift-apps/greenwave/templates/configmap.yml

@@ -20,8 +20,14 @@ data:
     WAIVERDB_API_URL = 'https://waiverdb-web-waiverdb.app.os.fedoraproject.org/api/v1.0'
     CORS_URL = 'https://bodhi.fedoraproject.org'
 {% endif %}
-    # XXX: change to dbm backend with persistent volume.
-    CACHE = {'backend': 'dogpile.cache.memory'}
+    CACHE = {
+        'backend': 'dogpile.cache.memcached',
+        'expiration_time': 3600, # 3600 is 1 hour
+        'arguments': {
+            'url': 'greenwave-memcached:11211',
+            'distributed_lock': True
+        }
+    }
   fedora.yaml: |-
     --- !Policy
     id: "openqa_important_stuff_for_rawhide"
@@ -229,8 +235,6 @@ data:
   greenwave.py: |-
     import socket
     config = dict(
-      # XXX: change to dbm backend with persistent volume.
-      greenwave_cache={'backend': 'dogpile.cache.null'},
       sign_messages=True,
       active=True,
 
@@ -256,7 +260,14 @@ data:
               }
           },
       },
-
+      greenwave_cache={
+          'backend': 'dogpile.cache.memcached',
+          'expiration_time': 3600, # 3600 is 1 hour
+          'arguments': {
+              'url': 'greenwave-memcached:11211',
+              'distributed_lock': True
+          }
+      },
 {% if env == 'staging' %}
       environment='stg',
       relay_inbound=["tcp://busgateway01.stg.phx2.fedoraproject.org:9941"],