private async Task <IList <Alarm> > GetAlarms(IList <AlarmDefinition> alarms,
ResourceThresholds <TAlarmConfig> awsResource,
TAlarmConfig configuration,
string groupSuffix)
{
var result = new List <Alarm>();
var entity = await _tableSource.GetResourceAsync(awsResource.Name);
if (entity == null)
{
throw new Exception($"Entity {awsResource.Name} not found");
}
// expand dynamic thresholds
foreach (var alarm in alarms)
{
alarm.Threshold = await ExpandThreshold(entity.Resource, configuration, alarm.Threshold);
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var model = new Alarm
{
AlarmName = GetAlarmName(entity, alarm.Name, groupSuffix),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = alarm
};
result.Add(model);
}
return(result);
}
private async Task <IList <Alarm> > CreateAlarmsForResource(
IList <AlarmDefinition> defaults,
ResourceThresholds <TAlarmConfig> resource,
AwsServiceAlarms <TAlarmConfig> service,
string groupSuffix)
{
var entity = await _tableSource.GetResourceAsync(resource.Name);
// apply thresholds from resource or alerting group
var expanded = await _builder.CopyAndUpdateDefaultAlarmsForResource(entity, defaults, service, resource);
var result = new List <Alarm>();
if (entity == null)
{
throw new Exception($"Entity {resource.Name} not found");
}
foreach (var alarm in expanded)
{
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var model = new Alarm
{
AlarmName = _builder.GetAlarmName(entity, alarm.Name, groupSuffix),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = alarm
};
result.Add(model);
}
return(result);
}
private async Task <IList <Alarm> > GetAlarms(IList <AlarmDefinition> alarms,
ResourceThresholds awsResource,
ServiceAlertingGroup group)
{
var result = new List <Alarm>();
var entity = await _tableSource.GetResourceAsync(awsResource.Name);
if (entity == null)
{
throw new Exception($"Entity {awsResource.Name} not found");
}
// expand dynamic thresholds
foreach (var alarm in alarms)
{
alarm.Threshold = ExpandThreshold(entity.Resource, alarm.Threshold);
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var model = new Alarm
{
AlarmName = GetAlarmName(entity, alarm.Name, group.AlarmNameSuffix),
Resource = entity,
AlarmDefinition = alarm,
AlertingGroup = group,
Dimensions = dimensions
};
result.Add(model);
}
return(result);
}
private async Task <List <Alarm> > BuildAlarmsForQueue(
IList <AlarmDefinition> defaults,
ResourceThresholds <SqsResourceConfig> resource,
PopulatedServiceAlarms <SqsResourceConfig, QueueDataV2> service,
AlertingGroupParameters groupParameters,
QueueDataV2 queue)
{
var mergedConfig = service.Options.OverrideWith(resource.Options);
bool includeErrorQueues = mergedConfig.IncludeErrorQueues ?? true;
var result = new List <Alarm>();
var mergedValuesByAlarmName = service.Values.OverrideWith(resource.Values);
foreach (var alarm in defaults)
{
var dimensions = _dimensionProvider.GetDimensions(queue, alarm.DimensionNames);
var values = mergedValuesByAlarmName.GetValueOrDefault(alarm.Name) ?? new AlarmValues();
var actualThreshold = alarm.Threshold.CopyWith(value: values.Threshold);
var threshold = await ThresholdCalculator.ExpandThreshold(_attributeProvider,
queue,
mergedConfig,
actualThreshold);
var built = alarm.CopyWith(threshold, values);
var model = new Alarm
{
AlarmName = $"{resource.Name}-{built.Name}-{groupParameters.AlarmNameSuffix}",
AlarmDescription = groupParameters.DefaultAlarmDescription(resource),
// error queues currently named as per parent queue
ResourceIdentifier = resource.Name,
Dimensions = dimensions,
AlarmDefinition = built
};
result.Add(model);
}
if (includeErrorQueues && queue.ErrorQueue != null)
{
var alarms = await BuildAlarmsForQueue(_errorQueueDefaults, resource, service, groupParameters,
queue.ErrorQueue);
result.AddRange(alarms);
}
return(result);
}
private async Task <List <Alarm> > BuildTableAlarms(ResourceThresholds <DynamoResourceConfig> resourceConfig,
AwsServiceAlarms <DynamoResourceConfig> service,
AlertingGroupParameters groupParameters,
AwsResource <TableDescription> entity)
{
var mergedConfig = service.Options.OverrideWith(resourceConfig.Options);
var result = new List <Alarm>();
var mergedValuesByAlarmName = service.Values.OverrideWith(resourceConfig.Values);
var defaults = _defaultAlarms.DynamoDbRead;
if (mergedConfig.MonitorWrites ?? DynamoResourceConfig.MonitorWritesDefault)
{
defaults = defaults.Concat(_defaultAlarms.DynamoDbWrite).ToArray();
}
foreach (var alarm in defaults)
{
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var values = mergedValuesByAlarmName.GetValueOrDefault(alarm.Name) ?? new AlarmValues();
var configuredThreshold = alarm.Threshold.CopyWith(value: values.Threshold);
if (mergedConfig.ThresholdIsAbsolute ?? DynamoResourceConfig.ThresholdIsAbsoluteDefault)
{
configuredThreshold.ThresholdType = ThresholdType.Absolute;
}
var threshold = await ThresholdCalculator.ExpandThreshold(_attributeProvider,
entity.Resource,
mergedConfig,
configuredThreshold);
var built = alarm.CopyWith(threshold, values);
var model = new Alarm
{
AlarmName = $"{resourceConfig.Name}-{built.Name}-{groupParameters.AlarmNameSuffix}",
AlarmDescription = groupParameters.DefaultAlarmDescription(),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = built
};
result.Add(model);
}
return(result);
}
private async Task <IList <Alarm> > CreateAlarmsForResource(
ResourceThresholds <TAlarmConfig> resource,
AwsServiceAlarms <TAlarmConfig> service,
AlertingGroupParameters groupParameters)
{
var entity = await _tableSource.GetResourceAsync(resource.Name);
if (entity == null)
{
throw new Exception($"Entity {resource.Name} not found");
}
var mergedConfig = service.Options.OverrideWith(resource.Options);
var mergedValuesByAlarmName = service.Values.OverrideWith(resource.Values);
var result = new List <Alarm>();
foreach (var alarm in _defaultAlarms)
{
var values = mergedValuesByAlarmName.GetValueOrDefault(alarm.Name) ?? new AlarmValues();
var configuredThreshold = alarm.Threshold.CopyWith(value: values.Threshold);
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var threshold = await ThresholdCalculator.ExpandThreshold(_attributeProvider,
entity.Resource,
mergedConfig,
configuredThreshold);
var built = alarm.CopyWith(threshold, values);
var model = new Alarm
{
AlarmName = $"{resource.Name}-{built.Name}-{groupParameters.AlarmNameSuffix}",
AlarmDescription = groupParameters.DefaultAlarmDescription(),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = built
};
result.Add(model);
}
return(result);
}
private async Task <IList <Alarm> > BuildIndexAlarms(ResourceThresholds <ResourceConfig> resource, AwsServiceAlarms <ResourceConfig> service, AlertingGroupParameters groupParameters,
AwsResource <TableDescription> entity)
{
var result = new List <Alarm>();
var gsiSet = entity.Resource.GlobalSecondaryIndexes;
foreach (var gsi in gsiSet)
{
var gsiResource = new AwsResource <GlobalSecondaryIndexDescription>(gsi.IndexName, gsi);
var expandedGsi = await _gsiAlarmBuilder.CopyAndUpdateDefaultAlarmsForResource(
gsiResource,
Defaults.DynamoDbGsi, service, resource);
foreach (var gsiAlarm in expandedGsi)
{
var dimensions = _gsiDimensionProvider.GetDimensions(gsi, gsiAlarm.DimensionNames);
var model = new Alarm
{
AlarmName = $"{resource.Name}-{gsi.IndexName}-{gsiAlarm.Name}-{groupParameters.AlarmNameSuffix}",
AlarmDescription = _builder.GetAlarmDescription(groupParameters),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = gsiAlarm
};
result.Add(model);
}
}
return(result);
}
private async Task <List <Alarm> > BuildTableAlarms(IList <AlarmDefinition> defaults, ResourceThresholds <ResourceConfig> resource, AwsServiceAlarms <ResourceConfig> service,
AlertingGroupParameters groupParameters,
AwsResource <TableDescription> entity)
{
var expanded = await _builder.CopyAndUpdateDefaultAlarmsForResource(entity, defaults, service, resource);
var result = new List <Alarm>();
foreach (var alarm in expanded)
{
var dimensions = _dimensions.GetDimensions(entity.Resource, alarm.DimensionNames);
var model = new Alarm
{
AlarmName = $"{resource.Name}-{alarm.Name}-{groupParameters.AlarmNameSuffix}",
AlarmDescription = _builder.GetAlarmDescription(groupParameters),
Resource = entity,
Dimensions = dimensions,
AlarmDefinition = alarm
};
result.Add(model);
}
return(result);
}