public void DirectoryPathToPrefix(string filePath)
{
string prefix = AzureUtils.DirectoryPathToPrefix(filePath);
Assert.StartsWith("media", prefix);
Assert.EndsWith("/", prefix);
}
private IEnumerable <CloudBlockBlob> GetAllBlobs()
{
string prefix = AzureUtils.DirectoryPathToPrefix(this.physicalRootPath);
BlobContinuationToken blobContinuationToken = null;
do
{
BlobResultSegment results = this.cloudBlobContainer.ListBlobsSegmented(
prefix,
true,
BlobListingDetails.None,
null,
blobContinuationToken,
null,
null);
blobContinuationToken = results.ContinuationToken;
foreach (IListBlobItem item in results.Results)
{
if (item is CloudBlockBlob cloudBlockBlob)
{
yield return(cloudBlockBlob);
}
}
}while (blobContinuationToken != null);
}
public IEnumerable <string> EnumerateFiles(string path, string extension, SearchOption searchOption)
{
Assert.ArgumentNotNullOrEmpty(path, nameof(path));
extension = extension.Trim('.');
string prefix = AzureUtils.DirectoryPathToPrefix(path);
IEnumerable <IListBlobItem> items = this.azureProvider.EnumerateBlobs(prefix, searchOption);
foreach (IListBlobItem item in items)
{
if (item is CloudBlockBlob cloudBlockBlob)
{
var name = cloudBlockBlob.Name;
if (string.IsNullOrEmpty(prefix) || name.StartsWith(prefix))
{
if (string.IsNullOrEmpty(extension) || name.EndsWith($".{extension}"))
{
yield return(cloudBlockBlob.Name);
}
}
}
}
}
public bool DirectoryExists(string directoryPath)
{
string prefix = AzureUtils.DirectoryPathToPrefix(directoryPath);
IEnumerable <IListBlobItem> list = this.azureProvider.EnumerateBlobs(
prefix,
SearchOption.AllDirectories,
4);
return(list.OfType <CloudBlockBlob>().Any());
}
private void EnsureCache()
{
if (!this.blobsItemsCache.Any())
{
lock (this.blobsItemsCache)
{
if (!this.blobsItemsCache.Any())
{
string prefix = AzureUtils.DirectoryPathToPrefix(this.physicalRootPath);
Log.Info($"AZURE BLOB STORAGE. Creating cache (container={this.cloudBlobContainer.Name}, root={prefix}).", this);
foreach (CloudBlockBlob blob in this.GetAllBlobs())
{
this.blobsItemsCache[blob.Name] = blob;
}
Log.Info($"AZURE BLOB STORAGE. Cached created. Total nodes: {this.blobsItemsCache.Keys.Count} (container={this.cloudBlobContainer.Name}, root={prefix}).", this);
}
}
}
}
