public BackupUtility(ref IReliableStateManager stateManager, BackupConfig config, ElapsedEventHandler callback)
{
_stateManager = stateManager;
_backupConfig = config;
_timer = new Timer();
_timer.Elapsed += callback;
_timer.Interval = _backupConfig.BackupInterval;
}
private CloudBlockBlob getBlockBlob(BackupConfig config)
{
var connectionString = ConfigurationManager.ConnectionStrings[config.BlobStorageKey].ConnectionString;
var containerName = ConfigurationManager.AppSettings[config.ContainerName];
var blobName = ConfigurationManager.AppSettings[config.BlobName];
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = blobClient.GetContainerReference(containerName);
CloudBlockBlob blockBlob = container.GetBlockBlobReference(blobName);
return blockBlob;
}
public Task<bool> RestoreFromBackup(string localFilePath, BackupConfig restoreConfig)
{
var success = true;
try
{
var blob = getBlockBlob(restoreConfig);
using (var fileStream = System.IO.File.OpenWrite(localFilePath))
{
blockBlob.DownloadToStream(fileStream);
}
await this.StateManager.RestoreAsync(Directory.GetParent(filePath));
}
catch(Exception ex)
{
ServiceEventSource.Current.Message("ERROR: {0}", ex);
success = false;
}
return Task.FromResult(success);
}
public void UpdateBackupConfig(BackupConfig config)
{
_backupConfig = config;
}
