private async Task <List <TemporaryExposureKey> > FilterDuplicateIncommingKeys(List <TemporaryExposureKey> incomingKeys)
{
int numberOfRecordsToSkip = 0;
int batchSize = _appSettingsConfig.MaxKeysPerFile;
long lowestRollingStartNumber = GetLowestRollingStartNumber(incomingKeys);
var existingKeysBatch = await _temporaryExposureKeyRepository.GetNextBatchOfKeysWithRollingStartNumberThresholdAsync(lowestRollingStartNumber, numberOfRecordsToSkip, batchSize);
while (existingKeysBatch.Count != 0)
{
incomingKeys = _exposureKeyMapper.FilterDuplicateKeys(incomingKeys, existingKeysBatch).ToList();
numberOfRecordsToSkip += existingKeysBatch.Count;
existingKeysBatch = await _temporaryExposureKeyRepository.GetNextBatchOfKeysWithRollingStartNumberThresholdAsync(lowestRollingStartNumber, numberOfRecordsToSkip, batchSize);
}
return(incomingKeys);
}
public async Task <IList <TemporaryExposureKey> > RemoveKeyDuplicatesAsync(IList <TemporaryExposureKey> downloadedKeys)
{
var numberOfRecordsToSkip = 0;
var filteredKeys = downloadedKeys;
IList <TemporaryExposureKey> dbKeysBatch;
do
{
var validRollingStartNumberThreshold =
ConvertOffsetDaysToRollingStartNumber(OutdatedKeysDayOffset);
dbKeysBatch = await _tempKeyRepository.GetNextBatchOfKeysWithRollingStartNumberThresholdAsync(validRollingStartNumberThreshold, numberOfRecordsToSkip, BatchSize);
filteredKeys = _exposureKeyMapper.FilterDuplicateKeys(filteredKeys, dbKeysBatch);
numberOfRecordsToSkip += dbKeysBatch.Count;
} while (dbKeysBatch.Count == BatchSize);
return(filteredKeys);
}