Implement snapshot renaming

[3/2] Implements #44

client-api/api_lib/pvcapi.py

@@ -892,6 +892,23 @@ def ceph_volume_snapshot_add(pool, volume, name):
     }
     return flask.jsonify(output), retcode
 
+def ceph_volume_snapshot_rename(pool, volume, name, new_name):
+    """
+    Rename a Ceph RBD volume snapshot in the PVC Ceph storage cluster.
+    """
+    zk_conn = pvc_common.startZKConnection(config['coordinators'])
+    retflag, retdata = pvc_ceph.rename_snapshot(zk_conn, pool, volume, name, new_name)
+    if retflag:
+        retcode = 200
+    else:
+        retcode = 400
+
+    pvc_common.stopZKConnection(zk_conn)
+    output = {
+        'message': retdata.replace('\"', '\'')
+    }
+    return flask.jsonify(output), retcode
+
 def ceph_volume_snapshot_remove(pool, volume, name):
     """
     Remove a Ceph RBD volume snapshot from the PVC Ceph storage cluster.

client-api/pvc-api.py

@@ -870,8 +870,12 @@ def api_ceph_volume_snapshot_element(pool, volume, snapshot):
         return pvcapi.ceph_volume_snapshot_list(pool, volume, snapshot)
 
     if flask.request.method == 'PUT':
-        # TODO: #44
-        flask.abort(501)
+        if 'name' in flask.request.values:
+            name = flask.request.values['name']
+        else:
+            return flask.jsonify({"message":"ERROR: A new name must be specified."}), 400
+
+        return pvcapi.ceph_volume_snapshot_rename(pool, volume, snapshot, name)
 
     if flask.request.method == 'DELETE':
         return pvcapi.ceph_volume_snapshot_remove(pool, volume, snapshot)