public string getDownloadKey(UPLOAD_INFO f)
{
string key;
lock (pendingUploads)
{
while (true)
{
string random1 = Path.GetRandomFileName().Substring(0, 8);
string random2 = Path.GetRandomFileName().Substring(0, 8);
key = random1 + random2;
try
{
//ADD TIMEOUT NOT SUPPORTED
pendingUploads.Add(key, f);
break;
} catch (ArgumentException) { /* keep trying */ }
}
}
String containerName, blobName, containerAzureName;
String[] arr = f.path.Split(':');
containerName = arr[0];
blobName = arr[1];
if (containerName.Equals(f.username))
{
containerAzureName = azureLink.findUserId(f.username).ToString();
}
else
{
int uid = azureLink.findUserId(f.username);
IResourceManage r = new Resource();
int rid = r.getContainerID(uid, containerName);
if (rid == -1)
{
pendingUploads.Remove(key);
throw new DBLikeExceptions.CloudContainerNotFoundException();
}
if (!r.canWrite(uid, rid))
{
pendingUploads.Remove(key);
throw new DBLikeExceptions.UnauthorizedAccessException();
}
/* TODO: improve this */
containerAzureName = new DBManager.ResourceM()
.getResourceById(new DBManager.DBAccess().getDBAccess(), rid)
.getContainerName();
}
if (VALIDATE_OLD_HASH)
{
try
{
var blobMgr = new BlobStorageManager.BlobFileHandler();
String oldHash = blobMgr.getBlobMD5HashValue(containerAzureName, blobName);
if (oldHash != null && !oldHash.Equals(f.prevHash))
{
throw new DBLikeExceptions.HashConflictException();
}
} catch (DBLikeExceptions.CloudBlobNotFoundException) { /* new file, no old hash */ }
}
return(key);
}
/// <summary>
/// This method takes (path{containerID:path}, local path) and uploads the file to blob storage
/// THROW UNAUTHORIZEDACCESSEXCEPTION IF USER HAS NO RIGHT TO ACCESS THE MENTIONED PATH
/// NOTE---------------->>>>>>>>>>
/// For uploading, first need to pass the containerID in path which can be obtained by using Resource:getContainerID()
/// then check for write permission using Resource:canWrite() then call this operation
/// For example :
/// Path <9043: bar/foo.txt> means we want to create a folder named bar and save foo.txt file in container 9043
/// </summary>
/// <param name="username"></param>
/// <param name="path"></param>
/// <param name="data"></param>
public void upload(UPLOAD_INFO info, String localpath)
{
try
{
String username = info.username;
String path = info.path;
DBManager.UserM umgr = new DBManager.UserM();
Model.UserModel user = new Model.UserModel();
user = umgr.getUserRecord(connection, username);
//Break the path <containerid:path>
String[] pathTokens = path.Split(':');
String destinationCont = pathTokens[0];
String destinationPath = pathTokens[1];
String mycontainer = destinationCont;
CloudBlobContainer destContainer;
if (username.Equals(destinationCont))
{
Console.WriteLine("File.cs#upload(): Writing to user private area.");
destContainer = BlobStorageManager.BlobStorage.getCloudBlobContainer(user.getUid().ToString());
}
else
{
DBManager.ResourceM contDetail = new DBManager.ResourceM();
Resource res = new Resource();
int containerId = res.getContainerID(user.getUid(), destinationCont);
if (containerId == -1)
{
throw new DBLikeExceptions.CloudContainerNotFoundException("File.cs#upload: no container");
}
Model.AzureContainerModel container = contDetail.getResourceById(connection, containerId);
Console.WriteLine("File.cs#upload(): Writing to shared container {0}", container.getContainerName());
destContainer = BlobStorageManager.BlobStorage.getCloudBlobContainer(container.getContainerName());
}
/*
* Console.WriteLine("ResourceID:" + destinationCont);
*
* Resource res = new Resource();
*
* if (container.getOwner() != user.getUid()) //user is not owner
* {
* if (!res.canWrite(user.getUid(), Int32.Parse(destinationCont))) //not having write permission
* {
* throw new DBLikeExceptions.UnauthorizedAccessException();
* }
* }
* mycontainer = container.getContainerName();
* */
//CloudBlobContainer myContainer = BlobStorageManager.BlobStorage.getCloudBlobContainer(mycontainer);
String blobName = String.Format(destinationPath);
CloudBlockBlob file = destContainer.GetBlockBlobReference(blobName);
using (FileStream fstream = new FileStream(localpath, FileMode.Open))
{
file.UploadFromStream(fstream);
}
BlobStorageManager.BlobFileHandler bhandler = new BlobStorageManager.BlobFileHandler();
//fstream = new FileStream(localpath, FileMode.Open);
//file.Properties.
file.Metadata["HashValue"] = info.curHash;
file.Metadata["ClientModifyTime"] = info.utcTime.Ticks.ToString();
file.SetMetadata();
file.Properties.ContentType = "file/active";
file.SetProperties();
}
catch (Microsoft.WindowsAzure.Storage.StorageException ex)
{
Console.WriteLine("upload method in User class says-> " + ex);
}
}
