//-------------------------------------------------
// Recover a specific blob snapshot
//-------------------------------------------------
private static async Task CopySnapshotToBaseBlob()
{
var connectionString = Constants.connectionString;
BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
BlobContainerClient container =
blobServiceClient.GetBlobContainerClient(Constants.containerName);
// Get a specific blob to restore.
BlobClient blockBlob = container.GetBlobClient("blob1.txt");
// <Snippet_RecoverSpecificBlobSnapshot>
// Restore the deleted blob.
await blockBlob.UndeleteAsync();
// List blobs in this container that match prefix.
// Include snapshots in listing.
Pageable <BlobItem> blobItems = container.GetBlobs
(BlobTraits.None, BlobStates.Snapshots, prefix: blockBlob.Name);
// Get the URI for the most recent snapshot.
BlobUriBuilder blobSnapshotUri = new BlobUriBuilder(blockBlob.Uri)
{
Snapshot = blobItems
.OrderByDescending(snapshot => snapshot.Snapshot)
.ElementAtOrDefault(1)?.Snapshot
};
// Restore the most recent snapshot by copying it to the blob.
blockBlob.StartCopyFromUri(blobSnapshotUri.ToUri());
// </Snippet_RecoverSpecificBlobSnapshot>
}
//-------------------------------------------------
// Restore a previous version
//-------------------------------------------------
private static void CopyVersionToBaseBlob(string blobName)
{
var connectionString = Constants.connectionString;
BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
BlobContainerClient container =
blobServiceClient.GetBlobContainerClient(Constants.containerName);
// Get a specific blob to restore.
BlobClient blockBlob = container.GetBlobClient(blobName);
// <Snippet_RestorePreviousVersion>
// List blobs in this container that match prefix.
// Include versions in listing.
Pageable <BlobItem> blobItems = container.GetBlobs
(BlobTraits.None, BlobStates.Version, prefix: blockBlob.Name);
// Get the URI for the most recent version.
BlobUriBuilder blobVersionUri = new BlobUriBuilder(blockBlob.Uri)
{
VersionId = blobItems
.OrderByDescending(version => version.VersionId)
.ElementAtOrDefault(1)?.VersionId
};
// Restore the most recently generated version by copying it to the base blob.
blockBlob.StartCopyFromUri(blobVersionUri.ToUri());
// </Snippet_RestorePreviousVersion>
}
private void ExecuteCore()
{
var containerClient = new BlobContainerClient(new Uri(BlobContainerSasUrl));
Pageable <BlobItem> blobs = containerClient.GetBlobs(prefix: RepoName + "/");
BlobItem newest = blobs.OrderByDescending(b => b.Name).FirstOrDefault();
if (newest == null)
{
Log.LogError($"Unable to find stage1 output for repo {RepoName}");
return;
}
BlobClient blobClient = containerClient.GetBlobClient(newest.Name);
var loggableUrl = new UriBuilder(blobClient.Uri)
{
Fragment = "", Query = ""
};
Log.LogMessage($"Extracting {loggableUrl} to {OutputDirectory}");
using Stream fileStream = blobClient.OpenRead();
using var input = new GZipInputStream(fileStream);
using var archive = TarArchive.CreateInputTarArchive(input, Encoding.UTF8);
archive.ExtractContents(OutputDirectory, false);
}