From 153740da9d3dd16a8c33b676b1f50d5496e831ff Mon Sep 17 00:00:00 2001
From: Jorrit Schaap <schaap@astron.nl>
Date: Mon, 22 Jan 2024 12:55:36 +0100
Subject: [PATCH] TMSS-2886: little query optimization
---
SAS/TMSS/backend/src/tmss/tmssapp/views.py | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/views.py b/SAS/TMSS/backend/src/tmss/tmssapp/views.py
index 53b19aaf6cd..8291fe5a4ca 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/views.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/views.py
@@ -757,10 +757,12 @@ def failure_report(request):
def public_schedule(request):
'''return the current and future running and scheduled units in either html table or json depending on the request accept header'''
# get all current and future running and scheduled units
- scheduled_or_running_units = models.SchedulingUnitBlueprint.objects.filter(status__value__in=models.SchedulingUnitStatus.ACTIVE_STATUS_VALUES) \
+ scheduled_or_running_units = models.SchedulingUnitBlueprint.objects.prefetch_related('task_blueprints__specifications_template__type') \
+ .select_related(models.SchedulingUnitBlueprint.path_to_project, 'status', 'specifications_template', 'specifications_template') \
+ .filter(status__value__in=models.SchedulingUnitStatus.ACTIVE_STATUS_VALUES) \
.filter(obsolete_since__isnull=True) \
.filter(on_sky_stop_time__gte=datetime.utcnow()) \
- .order_by('on_sky_start_time').all()
+ .order_by('on_sky_start_time').all()[:3]
# return json if requested
if 'json' in request.headers.get('Accept','').lower():
--
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