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authorDan McGee <dan@archlinux.org>2010-09-21 18:31:26 -0500
committerDan McGee <dan@archlinux.org>2010-09-21 18:31:26 -0500
commit5b87b21ccdd5938acf81afed00ccf0d957f5047c (patch)
tree8da26c8b6a90a19724568505f4fa81c5c844a8d6 /mirrors/utils.py
parent818028562d5d99482c781457e0219f7b5afe4e2c (diff)
Allow caching of mirror status info
Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'mirrors/utils.py')
-rw-r--r--mirrors/utils.py45
1 files changed, 45 insertions, 0 deletions
diff --git a/mirrors/utils.py b/mirrors/utils.py
new file mode 100644
index 00000000..bbbaca26
--- /dev/null
+++ b/mirrors/utils.py
@@ -0,0 +1,45 @@
+from django.db.models import Avg, Count, Max, Min, StdDev
+
+from main.utils import cache_function
+from .models import MirrorLog, MirrorProtocol, MirrorUrl
+
+import datetime
+
+cutoff_time = datetime.datetime.utcnow() - datetime.timedelta(hours=24)
+
+@cache_function(300)
+def get_mirror_statuses():
+ protocols = MirrorProtocol.objects.exclude(protocol__iexact='rsync')
+ # I swear, this actually has decent performance...
+ urls = MirrorUrl.objects.select_related(
+ 'mirror', 'protocol').filter(
+ mirror__active=True, mirror__public=True,
+ protocol__in=protocols).filter(
+ logs__check_time__gte=cutoff_time).annotate(
+ check_count=Count('logs'), last_sync=Max('logs__last_sync'),
+ last_check=Max('logs__check_time'),
+ duration_avg=Avg('logs__duration'), duration_min=Min('logs__duration'),
+ duration_max=Max('logs__duration'), duration_stddev=StdDev('logs__duration')
+ ).order_by('-last_sync', '-duration_avg')
+
+ for url in urls:
+ if url.last_check and url.last_sync:
+ d = url.last_check - url.last_sync
+ url.delay = d
+ url.score = d.days * 24 + d.seconds / 3600 + url.duration_avg + url.duration_stddev
+ else:
+ url.delay = None
+ url.score = None
+ return urls
+
+@cache_function(300)
+def get_mirror_errors():
+ errors = MirrorLog.objects.filter(
+ is_success=False, check_time__gte=cutoff_time).values(
+ 'url__url', 'url__protocol__protocol', 'url__mirror__country',
+ 'error').annotate(
+ error_count=Count('error'), last_occurred=Max('check_time')
+ ).order_by('-last_occurred', '-error_count')
+ return list(errors)
+
+# vim: set ts=4 sw=4 et: