Adds OperationPostponedResponse object

app/pulp/app/response.py

@@ -0,0 +1,34 @@
+from rest_framework.response import Response
+
+
+class OperationPostponedResponse(Response):
+    """
+    An HTTP response class for returning 202 and a list of spawned tasks.
+
+    This reponse object should be used by views that dispatch asynchronous tasks. The most common
+    use case is for sync and publish operations. When JSON is requested, the response will look
+    like the following:
+
+        [
+            {
+                "_href": "/this/needs/to/be/updated/adlfk-bala-23k5l7-lslser",
+                "task_id": "adlfk-bala-23k5l7-lslser"
+            },
+            {
+                "_href": "/this/needs/to/be/updated/fr63x-dlsd-4566g-dv64m",
+                "task_id": "fr63x-dlsd-4566g-dv64m"
+            }
+        ]
+    """
+
+    def __init__(self, task_results):
+        """
+        :param task_results: List of AsyncResult objects that are used to generate the response.
+        :type task_group_id: List of AsyncResult
+        """
+        raise NotImplementedError
+        tasks = []
+        for result in task_results:
+            task = {"_href": result.task_id, "task_id": result.task_id}
+            tasks.append(task)
+        super(OperationPostponedResponse, self).__init__(data=tasks, status=202)