public async Task CloudBlobSoftDeleteSnapshotTask()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
//Enables a delete retention policy on the blob with 1 day of default retention days
container.ServiceClient.EnableSoftDelete();
await container.CreateAsync();
// Upload some data to the blob.
MemoryStream originalData = new MemoryStream(GetRandomBuffer(1024));
CloudAppendBlob appendBlob = container.GetAppendBlobReference(BlobName);
await appendBlob.UploadFromStreamAsync(originalData);
CloudBlob blob = container.GetBlobReference(BlobName);
//create snapshot via api
CloudBlob snapshot = await blob.SnapshotAsync();
//create snapshot via write protection
await appendBlob.UploadFromStreamAsync(originalData);
//we should have 2 snapshots 1 regular and 1 deleted: there is no way to get only the deleted snapshots but the below listing will get both snapshot types
int blobCount = 0;
int deletedSnapshotCount = 0;
int snapShotCount = 0;
BlobContinuationToken ct = null;
do
{
foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync
(null, true, BlobListingDetails.Snapshots | BlobListingDetails.Deleted, null, ct, null, null))
.Results
.ToList())
{
CloudAppendBlob blobItem = (CloudAppendBlob)item;
Assert.AreEqual(blobItem.Name, BlobName);
if (blobItem.IsSnapshot)
{
snapShotCount++;
}
if (blobItem.IsDeleted)
{
Assert.IsNotNull(blobItem.Properties.DeletedTime);
Assert.AreEqual(blobItem.Properties.RemainingDaysBeforePermanentDelete, 0);
deletedSnapshotCount++;
}
blobCount++;
}
} while (ct != null);
Assert.AreEqual(blobCount, 3);
Assert.AreEqual(deletedSnapshotCount, 1);
Assert.AreEqual(snapShotCount, 2);
blobCount = 0;
ct = null;
do
{
foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync
(null, true, BlobListingDetails.Snapshots, null, ct, null, null))
.Results
.ToList())
{
CloudAppendBlob blobItem = (CloudAppendBlob)item;
Assert.AreEqual(blobItem.Name, BlobName);
Assert.IsFalse(blobItem.IsDeleted);
Assert.IsNull(blobItem.Properties.DeletedTime);
Assert.IsNull(blobItem.Properties.RemainingDaysBeforePermanentDelete);
blobCount++;
}
} while (ct != null);
Assert.AreEqual(blobCount, 2);
//Delete Blob and snapshots
await blob.DeleteAsync(DeleteSnapshotsOption.IncludeSnapshots, null, null, null);
Assert.IsFalse(await blob.ExistsAsync());
Assert.IsFalse(await snapshot.ExistsAsync());
blobCount = 0;
ct = null;
do
{
foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync
(null, true, BlobListingDetails.All, null, ct, null, null))
.Results
.ToList())
{
CloudAppendBlob blobItem = (CloudAppendBlob)item;
Assert.AreEqual(blobItem.Name, BlobName);
Assert.IsTrue(blobItem.IsDeleted);
Assert.IsNotNull(blobItem.Properties.DeletedTime);
Assert.AreEqual(blobItem.Properties.RemainingDaysBeforePermanentDelete, 0);
blobCount++;
}
} while (ct != null);
Assert.AreEqual(blobCount, 3);
await blob.UndeleteAsync();
await blob.FetchAttributesAsync();
Assert.IsFalse(blob.IsDeleted);
Assert.IsNull(blob.Properties.DeletedTime);
Assert.IsNull(blob.Properties.RemainingDaysBeforePermanentDelete);
blobCount = 0;
ct = null;
do
{
foreach (IListBlobItem item in (await container.ListBlobsSegmentedAsync
(null, true, BlobListingDetails.All, null, ct, null, null))
.Results
.ToList())
{
CloudAppendBlob blobItem = (CloudAppendBlob)item;
Assert.AreEqual(blobItem.Name, BlobName);
Assert.IsFalse(blobItem.IsDeleted);
Assert.IsNull(blobItem.Properties.DeletedTime);
Assert.IsNull(blobItem.Properties.RemainingDaysBeforePermanentDelete);
blobCount++;
}
} while (ct != null);
Assert.AreEqual(blobCount, 3);
}
finally
{
container.ServiceClient.DisableSoftDelete();
await container.DeleteAsync();
}
}