def calculate_alert_properties(self, alert_summary, series_signature):
prev_range = series_signature.max_back_window
if not prev_range:
prev_range = settings.PERFHERDER_ALERTS_MAX_BACK_WINDOW
new_range = series_signature.fore_window
if not new_range:
new_range = settings.PERFHERDER_ALERTS_FORE_WINDOW
prev_data = PerformanceDatum.objects.filter(
signature=series_signature,
push_timestamp__lte=alert_summary.prev_push.time).order_by(
'-push_timestamp')
prev_values = prev_data.values_list('value', flat=True)[:prev_range]
new_data = PerformanceDatum.objects.filter(
signature=series_signature,
push_timestamp__gt=alert_summary.prev_push.time).order_by(
'push_timestamp')
new_values = new_data.values_list('value', flat=True)[:new_range]
if not prev_data or not new_data:
raise InsufficientAlertCreationData
prev_value = sum(prev_values) / len(prev_values)
new_value = sum(new_values) / len(new_values)
return get_alert_properties(prev_value, new_value,
series_signature.lower_is_better)
def calculate_alert_properties(self, alert_summary, series_signature):
prev_range = series_signature.max_back_window
if not prev_range:
prev_range = settings.PERFHERDER_ALERTS_MAX_BACK_WINDOW
new_range = series_signature.fore_window
if not new_range:
new_range = settings.PERFHERDER_ALERTS_FORE_WINDOW
prev_data = PerformanceDatum.objects.filter(
signature=series_signature,
push_timestamp__lte=alert_summary.prev_push.time).order_by(
'-push_timestamp')
prev_values = prev_data.values_list('value', flat=True)[:prev_range]
new_data = PerformanceDatum.objects.filter(
signature=series_signature,
push_timestamp__gt=alert_summary.prev_push.time).order_by(
'push_timestamp')
new_values = new_data.values_list('value', flat=True)[:new_range]
if not prev_data or not new_data:
raise InsufficientAlertCreationData
prev_value = sum(prev_values) / len(prev_values)
new_value = sum(new_values) / len(new_values)
return get_alert_properties(prev_value, new_value,
series_signature.lower_is_better)
def create(self, request, *args, **kwargs):
data = request.data
if 'summary_id' not in data or 'signature_id' not in data:
return Response(
{
"message":
"Summary and signature ids necessary "
"to create alert"
},
status=HTTP_400_BAD_REQUEST)
summary = PerformanceAlertSummary.objects.get(id=data['summary_id'])
signature = PerformanceSignature.objects.get(id=data['signature_id'])
prev_range = signature.max_back_window
if not prev_range:
prev_range = settings.PERFHERDER_ALERTS_MAX_BACK_WINDOW
new_range = signature.fore_window
if not new_range:
new_range = settings.PERFHERDER_ALERTS_FORE_WINDOW
prev_data = PerformanceDatum.objects.filter(
signature=signature,
result_set_id__lte=summary.prev_result_set_id).order_by(
'-push_timestamp').values_list('value', flat=True)[:prev_range]
new_data = PerformanceDatum.objects.filter(
signature=signature,
result_set_id__gt=summary.prev_result_set_id).order_by(
'push_timestamp').values_list('value', flat=True)[:new_range]
if not prev_data or not new_data:
return Response(
{"message": "Insufficient data to create an "
"alert"},
status=HTTP_400_BAD_REQUEST)
prev_value = sum(prev_data) / len(prev_data)
new_value = sum(new_data) / len(new_data)
alert_properties = get_alert_properties(prev_value, new_value,
signature.lower_is_better)
alert, _ = PerformanceAlert.objects.get_or_create(
summary=summary,
series_signature=signature,
defaults={
'is_regression': alert_properties.is_regression,
'manually_created': True,
'amount_pct': alert_properties.pct_change,
'amount_abs': alert_properties.delta,
'prev_value': prev_value,
'new_value': new_value,
't_value': 1000
})
return Response({"alert_id": alert.id})
def create(self, request, *args, **kwargs):
data = request.data
if 'summary_id' not in data or 'signature_id' not in data:
return Response({"message": "Summary and signature ids necessary "
"to create alert"}, status=HTTP_400_BAD_REQUEST)
summary = PerformanceAlertSummary.objects.get(
id=data['summary_id'])
signature = PerformanceSignature.objects.get(
id=data['signature_id'])
prev_range = signature.max_back_window
if not prev_range:
prev_range = settings.PERFHERDER_ALERTS_MAX_BACK_WINDOW
new_range = signature.fore_window
if not new_range:
new_range = settings.PERFHERDER_ALERTS_FORE_WINDOW
prev_data = PerformanceDatum.objects.filter(
signature=signature,
push_timestamp__lte=summary.prev_push.time).order_by(
'-push_timestamp').values_list('value', flat=True)[:prev_range]
new_data = PerformanceDatum.objects.filter(
signature=signature,
push_timestamp__gt=summary.prev_push.time).order_by(
'push_timestamp').values_list('value', flat=True)[:new_range]
if not prev_data or not new_data:
return Response({"message": "Insufficient data to create an "
"alert"}, status=HTTP_400_BAD_REQUEST)
prev_value = sum(prev_data)/len(prev_data)
new_value = sum(new_data)/len(new_data)
alert_properties = get_alert_properties(prev_value, new_value,
signature.lower_is_better)
alert, _ = PerformanceAlert.objects.get_or_create(
summary=summary,
series_signature=signature,
defaults={
'is_regression': alert_properties.is_regression,
'manually_created': True,
'amount_pct': alert_properties.pct_change,
'amount_abs': alert_properties.delta,
'prev_value': prev_value,
'new_value': new_value,
't_value': 1000
})
return Response({"alert_id": alert.id})
