private async Task BackupTableAsync(IAzureTableBackup table)
{
await _loggingRepository.LogMessageAsync(new LogMessage { Message = $"Starting backup maintenance for table: {table.SourceTableName}" });
var entities = await _azureTableBackupRepository.GetEntitiesAsync(table);
if (entities == null)
{
return;
}
// basically, the table storage gets used regardless, to read the source table
// and to maintain the tracking table. this determines whether the backup data
// is stored in table or blob storage.
IAzureStorageBackupRepository backUpTo = DetermineBackupStorage(table.BackupType);
if (backUpTo == null)
{
await _loggingRepository.LogMessageAsync(new LogMessage { Message = $"BackupType must be 'table' or 'blob'. Was {table.BackupType}. Not backing up {table.SourceTableName}." });
return;
}
await _loggingRepository.LogMessageAsync(new LogMessage { Message = $"Backing up {entities.Count} entites from table {table.SourceTableName} to {table.BackupType} storage." });
var backupResult = await backUpTo.BackupEntitiesAsync(table, entities);
await CompareBackupResults(table, backupResult);
}
public AzureTableBackupService(
List <AzureTableBackup> tablesToBackup,
ILoggingRepository loggingRepository,
IAzureTableBackupRepository azureTableBackupRepository,
IAzureStorageBackupRepository azureBlobBackupRepository)
{
_tablesToBackup = tablesToBackup;
_loggingRepository = loggingRepository ?? throw new ArgumentNullException(nameof(loggingRepository));
_azureTableBackupRepository = azureTableBackupRepository ?? throw new ArgumentNullException(nameof(azureTableBackupRepository));
_azureBlobBackupRepository = azureBlobBackupRepository ?? throw new ArgumentNullException(nameof(azureBlobBackupRepository));
}
