TMSS-183: annotate parset with comment that it was autogenerated by tmss (for provenance)

SAS/TMSS/src/tmss/tmssapp/viewsets/scheduling.py

@@ -31,7 +31,9 @@ from lofar.sas.tmss.tmss.tmssapp.viewsets.lofar_viewset import LOFARViewSet
 from lofar.sas.tmss.tmss.tmssapp import models
 from lofar.sas.tmss.tmss.tmssapp import serializers
 
+from datetime import datetime
 from lofar.common.json_utils import get_default_json_object_for_schema
+from lofar.common.datetimeutils import formatDatetime
 from lofar.sas.tmss.tmss.tmssapp.adapters.parset import convert_to_parset
 
 
@@ -227,5 +229,10 @@ class SubtaskViewSetJSONeditorOnline(LOFARViewSet):
      def parset(self, request, pk=None):
          subtask = get_object_or_404(models.Subtask, pk=pk)
          parset = convert_to_parset(subtask)
-         return HttpResponse(str(parset), content_type='text/plain')
+         parset_str = "# THIS PARSET WAS GENERATED BY TMSS FROM THE SPECICATION OF SUBTASK ID=%d ON %s url: %s\n%s" % (
+             subtask.pk,
+             formatDatetime(datetime.utcnow()),
+             request._request.get_raw_uri(),
+             parset,)
+         return HttpResponse(parset_str, content_type='text/plain')