104 lines
4.0 KiB
Python
104 lines
4.0 KiB
Python
"""Module for calculating and keep in cache satellite and transmitter statistics"""
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import math
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from django.core.cache import cache
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from django.db.models import Case, IntegerField, Sum, When
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from django.utils.timezone import now
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from network.base.models import Observation
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def transmitter_stats_by_uuid(uuid):
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"""Calculate and put in cache transmitter statistics"""
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stats = cache.get('tr-{0}-stats'.format(uuid))
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if stats is None:
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# Sum - Case - When should be replaced with Count and filter when we move to Django 2.*
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# more at https://docs.djangoproject.com/en/2.2/ref/models/conditional-expressions in
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# "Conditional aggregation" section.
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stats = Observation.objects.filter(transmitter_uuid=uuid).exclude(
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vetted_status='failed'
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).aggregate(
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good=Sum(Case(When(vetted_status='good', then=1), output_field=IntegerField())),
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bad=Sum(Case(When(vetted_status='bad', then=1), output_field=IntegerField())),
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unvetted=Sum(
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Case(
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When(vetted_status='unknown', end__lte=now(), then=1),
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output_field=IntegerField()
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)
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),
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future=Sum(
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Case(
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When(vetted_status='unknown', end__gt=now(), then=1),
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output_field=IntegerField()
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)
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)
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)
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cache.set('tr-{0}-stats'.format(uuid), stats, 3600)
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total_count = 0
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unvetted_count = 0 if stats['unvetted'] is None else stats['unvetted']
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future_count = 0 if stats['future'] is None else stats['future']
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good_count = 0 if stats['good'] is None else stats['good']
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bad_count = 0 if stats['bad'] is None else stats['bad']
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total_count = unvetted_count + future_count + good_count + bad_count
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unvetted_rate = 0
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future_rate = 0
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success_rate = 0
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bad_rate = 0
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if total_count:
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unvetted_rate = math.trunc(10000 * (float(unvetted_count) / float(total_count))) / 100.0
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future_rate = math.trunc(10000 * (float(future_count) / float(total_count))) / 100.0
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success_rate = math.trunc(10000 * (float(good_count) / float(total_count))) / 100.0
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bad_rate = math.trunc(10000 * (float(bad_count) / float(total_count))) / 100.0
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return {
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'total_count': total_count,
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'unvetted_count': unvetted_count,
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'future_count': future_count,
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'good_count': good_count,
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'bad_count': bad_count,
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'unvetted_rate': unvetted_rate,
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'future_rate': future_rate,
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'success_rate': success_rate,
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'bad_rate': bad_rate
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}
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def satellite_stats_by_transmitter_list(transmitter_list):
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"""Calculate satellite statistics"""
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total_count = 0
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unvetted_count = 0
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future_count = 0
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good_count = 0
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bad_count = 0
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unvetted_rate = 0
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future_rate = 0
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success_rate = 0
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bad_rate = 0
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for transmitter in transmitter_list:
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transmitter_stats = transmitter_stats_by_uuid(transmitter['uuid'])
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total_count += transmitter_stats['total_count']
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unvetted_count += transmitter_stats['unvetted_count']
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future_count += transmitter_stats['future_count']
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good_count += transmitter_stats['good_count']
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bad_count += transmitter_stats['bad_count']
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if total_count:
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unvetted_rate = math.trunc(10000 * (float(unvetted_count) / float(total_count))) / 100.0
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future_rate = math.trunc(10000 * (float(future_count) / float(total_count))) / 100.0
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success_rate = math.trunc(10000 * (float(good_count) / float(total_count))) / 100.0
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bad_rate = math.trunc(10000 * (float(bad_count) / float(total_count))) / 100.0
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return {
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'total_count': total_count,
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'unvetted_count': unvetted_count,
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'future_count': future_count,
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'good_count': good_count,
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'bad_count': bad_count,
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'unvetted_rate': unvetted_rate,
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'future_rate': future_rate,
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'success_rate': success_rate,
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'bad_rate': bad_rate
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}
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