public Folder CreateFolder(string folderName, string parentId = null)
{
string folderTypeName = this._entityFactory.GetEntityTypeStringName(typeof(Folder));
var folder = this._entityFactory.CreateEntityForType(folderTypeName) as Folder;
CloudBlobContainer container;
if (string.IsNullOrWhiteSpace(parentId))
{
container = CurrentCloudBlobClient.GetContainerReference(folderName.ToLower());
container.CreateIfNotExists();
MapCloudBlobContainer2Folder(container, folder);
}
else
{
var path = Combine(parentId, folderName);
string containerName = GetContainer(path);
string prefix = GetPrefix(path);
container = CurrentCloudBlobClient.GetContainerReference(containerName);
if (!container.ListBlobs(prefix).Any())
{
container.GetBlockBlobReference(Combine(prefix, DirectoryPlaceHolder)).UploadText(string.Empty);
}
var directory = container.GetDirectoryReference(prefix);
MapCloudBlobDirectory2Folder(directory, folder);
}
ChangeTracker.Attach(folder);
return(folder);
}
public byte[] GetImagePreview(string blobKey)
{
byte[] result;
var cloudBlob = CurrentCloudBlobClient.GetBlobReferenceFromServer(GetUri(blobKey));
cloudBlob.FetchAttributes();
if (cloudBlob.Metadata.ContainsKey(ThumbMetadataKey))
{
var imageAsString = cloudBlob.Metadata[ThumbMetadataKey];
result = Convert.FromBase64String(imageAsString);
}
else
{
using (var dataStream = new MemoryStream())
{
cloudBlob.DownloadToStream(dataStream);
result = GenerateThumb(dataStream, 100, 100, 8000);
SaveThumb(result, cloudBlob);
}
}
// don't return null
return(result ?? new byte[1]);
}
public bool Exists(string blobKey)
{
var container = CurrentCloudBlobClient.GetContainerReference(CurrentCloudBlobClient.BaseUri.AbsoluteUri);
var cloudBlob = container.GetBlockBlobReference(blobKey);
return(cloudBlob.Exists());
}
public bool Exists(string blobKey)
{
// CloudBlobContainer container = CurrentCloudBlobClient.GetContainerReference(DefaultBlobContainerName);
// ICloudBlob cloudBlob = container.GetBlobReferenceFromServer(blobKey);
var cloudBlob = CurrentCloudBlobClient.GetBlobReferenceFromServer(GetUri(blobKey));
return(cloudBlob.Exists());
}
public void Delete(string id)
{
var container = CurrentCloudBlobClient.GetContainerReference(GetContainer(id));
var listOfBlobs = container.ListBlobs(GetPrefix(id));
Parallel.ForEach(listOfBlobs, item =>
{
var blob = CurrentCloudBlobClient.GetBlobReferenceFromServer(item.StorageUri);
blob.Delete();
});
}
public virtual Stream OpenReadOnly(string blobKey)
{
if (Exists(blobKey))
{
//var container = this.CurrentCloudBlobClient.GetContainerReference(DefaultBlobContainerName);
//var cloudBlob = container.GetBlobReferenceFromServer(blobKey);
var cloudBlob = CurrentCloudBlobClient.GetBlobReferenceFromServer(GetUri(blobKey));
var stream = new MemoryStream();
cloudBlob.DownloadToStream(stream);
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
return(stream);
}
else
{
return(null);
}
}
public void Rename(string id, string name)
{
var container = CurrentCloudBlobClient.GetContainerReference(GetContainer(id));
var prefix = GetPrefix(id);
int index = prefix.LastIndexOf(CurrentCloudBlobClient.DefaultDelimiter, 1, StringComparison.Ordinal);
var names = prefix.Split(new [] { CurrentCloudBlobClient.DefaultDelimiter }, StringSplitOptions.RemoveEmptyEntries);
names[names.Length - 1] = name;
var newPrefix = names.JoinStrings(CurrentCloudBlobClient.DefaultDelimiter);
if (prefix.EndsWith(CurrentCloudBlobClient.DefaultDelimiter))
{
newPrefix += CurrentCloudBlobClient.DefaultDelimiter;
}
var listOfBlobs = container.ListBlobs(prefix);
Parallel.ForEach(listOfBlobs, item =>
{
var oldBlob = CurrentCloudBlobClient.GetBlobReferenceFromServer(item.StorageUri);
var newBlob = container.GetBlockBlobReference(oldBlob.Name.Replace(prefix, newPrefix));
newBlob.StartCopyFromBlob(item.Uri);
oldBlob.Delete();
});
}
public virtual FolderItem GetFolderItemById(string itemId)
{
FolderItem retVal =
this.ChangeTracker.TrackingEntries.Select(x => x.Entity)
.OfType <FolderItem>()
.FirstOrDefault(x => x.FolderItemId == itemId);
if (retVal == null)
{
var cloudBlob = CurrentCloudBlobClient.GetBlobReferenceFromServer(GetUri(itemId)) as CloudBlockBlob;
if (cloudBlob != null && cloudBlob.Exists())
{
string folderItemTypeName = this._entityFactory.GetEntityTypeStringName(typeof(FolderItem));
retVal = this._entityFactory.CreateEntityForType(folderItemTypeName) as FolderItem;
this.MapCloudBlob2FolderItem(cloudBlob, retVal);
}
if (retVal != null)
{
this.ChangeTracker.Attach(retVal);
}
}
return(retVal);
}
