Add publishing of deployment changes

django_backend/backend/clientapi/models.py

 
+from django.dispatch import receiver
+from django.db.models.signals import post_save
+from .. import models
+from .serializers import DeploymentSerializer
+import pika
+import json
 
-class Deployments:
-    # attributes: services
-    pass
 
+@receiver(post_save, sender=models.Deployment)
+def publish_deployment(sender, instance=None, created=False, **kwargs):
+    if instance is None:
+        return
 
-class UserDeployment:
-    # attributes: user, ssh_keys
-    pass
+    connection = pika.BlockingConnection(
+            pika.ConnectionParameters(host='localhost'))
+
+    channel = connection.channel()
+    exchange_name = 'deployments'
+
+    channel.exchange_declare(exchange=exchange_name,
+                             exchange_type='topic')
+
+    message = json.dumps(DeploymentSerializer(instance).data)
+
+    # we only use the service as routing key
+    routing_keys = ['service.' + instance.service.name]
+
+    for routing_key in routing_keys:
+        channel.basic_publish(exchange=exchange_name,
+                              routing_key=routing_key,
+                              body=message)
+
+        print(" [x] Sent %r:%r" % (routing_key, message))
+
+    connection.close()

django_backend/backend/clientapi/serializers.py

@@ -15,7 +15,7 @@ class UserSerializer(serializers.ModelSerializer):
                 ]
 
 
-class UserDeploymentSerializer(serializers.ModelSerializer):
+class DeploymentSerializer(serializers.ModelSerializer):
     user = UserSerializer()
     ssh_keys = frontend_serializers.SSHPublicKeySerializer(many=True)
 
@@ -27,6 +27,6 @@ class UserDeploymentSerializer(serializers.ModelSerializer):
 class DeploymentsSerializer(serializers.Serializer):
     services = serializers.DictField(
             child=serializers.ListField(
-                child=UserDeploymentSerializer()
+                child=DeploymentSerializer()
                 )
             )