private CloudBlockBlob GetBlockBlob(StoreLocation location, string snapshot = null)
{
DateTime?snapshotDate = null;
if (snapshot != null)
{
snapshotDate = new DateTime(long.Parse(snapshot, CultureInfo.InvariantCulture));
}
var container = _blobStorage.GetContainerReference(SafeContainerName(location.Container));
var offset = snapshotDate.HasValue ? new DateTimeOffset(snapshotDate.Value, new TimeSpan(0)) : (DateTimeOffset?)null;
CloudBlockBlob blob;
if (location.Id.HasValue)
{
if (!string.IsNullOrEmpty(location.BasePath))
{
var dir = container.GetDirectoryReference(SafePath.MakeSafeFilePath(location.BasePath));
blob = dir.GetBlockBlobReference(location.Id.ToString() + IdExtension, offset);
}
else
{
blob = container.GetBlockBlobReference(location.Id.ToString() + IdExtension, offset);
}
}
else
{
blob = container.GetBlockBlobReference(SafePath.MakeSafeFilePath(location.BasePath), offset);
}
return(blob);
}
private BlockBlobClient GetBlockBlob(StoreLocation location, string snapshot = null)
{
var container = _blobStorage.GetBlobContainerClient(SafeContainerName(location.Container));
BlockBlobClient blob;
if (location.Id.HasValue)
{
if (!string.IsNullOrEmpty(location.BasePath))
{
var path = Path.Combine(SafePath.MakeSafeFilePath(location.BasePath), location.Id.ToString() + IdExtension);
blob = container.GetBlockBlobClient(path);
}
else
{
blob = container.GetBlockBlobClient(location.Id.ToString() + IdExtension);
}
}
else
{
blob = container.GetBlockBlobClient(SafePath.MakeSafeFilePath(location.BasePath));
}
return(string.IsNullOrWhiteSpace(snapshot) ? blob : blob.WithSnapshot(snapshot));
}
private IAsyncEnumerable <ICloudBlob> ListBlobs(CloudBlobContainer container, string prefix, BlobListingDetails options)
{
// Clean up the prefix if required
prefix = prefix == null ? null : SafePath.MakeSafeFilePath(prefix);
return(AsyncEnumerableEx.Create <ICloudBlob>(async(y) =>
{
BlobContinuationToken token = new BlobContinuationToken();
try
{
do
{
var segment = await container.ListBlobsSegmentedAsync(prefix, true, options, null, token, null, null, y.CancellationToken).ConfigureAwait(false);
LeoTrace.WriteLine("Listed blob segment for prefix: " + prefix);
foreach (var blob in segment.Results.OfType <ICloudBlob>())
{
await y.YieldReturn(blob).ConfigureAwait(false);
}
token = segment.ContinuationToken;
}while (token != null && !y.CancellationToken.IsCancellationRequested);
}
catch (StorageException e)
{
if (e.RequestInformation.HttpStatusCode != 404)
{
throw e.Wrap(container.Name + "_" + (prefix ?? string.Empty) + "*");
}
}
}));
}
private IAsyncEnumerable <BlobItem> ListBlobs(BlobContainerClient container, string prefix, BlobTraits traits, BlobStates states)
{
// Clean up the prefix if required
prefix = prefix == null ? null : SafePath.MakeSafeFilePath(prefix);
return(container.GetBlobsAsync(traits, states, prefix));
}