private async Task <bool> DeleteCSV(int ID)
{
bool result = false;
string fileName = null;
BaseResponseModel CSVResponse = responseService.GetSurveyFilename(ID);
if (CSVResponse != null)
{
fileName = CSVResponse.ResponseCSV.Split("/").Last();
}
try
{
CloudAppendBlob CSV = CONTAINER.GetAppendBlobReference(fileName);
if (CSV != null)
{
await CSV.DeleteAsync();
result = true;
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception Caught - " + ex.Message);
result = false;
}
return(result);
}
private static async Task deleteBlobs()
{
Console.Write("Please enter text to delete from blob: ");
string text = Console.ReadLine();
// Get a reference to a blob.
CloudAppendBlob appendBlob = container.GetAppendBlobReference(text);
// Delete the blob.
await appendBlob.DeleteAsync();
}
/// <inheritdoc />
public Task DeleteAsync(CancellationToken cancellationToken)
{
return(_sdk.DeleteAsync(cancellationToken));
}
private static async Task AppendBlobProcessAsync()
{
CloudStorageAccount storageAccount = null;
CloudBlobContainer cloudBlobContainer = null;
string sourceFile = null;
string destinationFile = null;
// Retrieve the connection string for use with the application. The storage connection string is stored
// in an environment variable on the machine running the application called storageconnectionstring.
// If the environment variable is created after the application is launched in a console or with Visual
// Studio, the shell needs to be closed and reloaded to take the environment variable into account.
string storageConnectionString = ConfigurationManager.AppSettings["StorageConnectionString"]; //Environment.GetEnvironmentVariable("StorageConnectionString");
//storageAccount = CloudStorageAccount.DevelopmentStorageAccount;
// Check whether the connection string can be parsed.
if (CloudStorageAccount.TryParse(storageConnectionString, out storageAccount))
{
try
{
// Create the CloudBlobClient that represents the Blob storage endpoint for the storage account.
////CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
//127.0.0.1:10000/devstoreaccount1/testcont
// Create a container called 'quickstartblobs' and append a GUID value to it to make the name unique.
////cloudBlobContainer = cloudBlobClient.GetContainerReference("testcontappendblob");// "quickstartblobs" + Guid.NewGuid().ToString());
////await cloudBlobContainer.CreateIfNotExistsAsync();
////Console.WriteLine("Created container '{0}'", cloudBlobContainer.Name);
////Console.WriteLine();
////// Set the permissions so the blobs are public.
////BlobContainerPermissions permissions = new BlobContainerPermissions
////{
//// PublicAccess = BlobContainerPublicAccessType.Blob
////};
////await cloudBlobContainer.SetPermissionsAsync(permissions);
// Get a reference to the blob address, then upload the file to the blob.
// Use the value of localFileName for the blob name.
CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
cloudBlobContainer = cloudBlobClient.GetContainerReference("testcont");
cloudBlobContainer.CreateIfNotExists();
CloudAppendBlob cloudAppendBlob = cloudBlobContainer.GetAppendBlobReference("1.txt");
cloudAppendBlob.CreateOrReplace();
cloudAppendBlob.AppendText("Content added");
cloudAppendBlob.AppendText("More content added");
cloudAppendBlob.AppendText("Even more content added");
string appendBlobContent = cloudAppendBlob.DownloadText();
//cloudAppendBlob.UploadFromFile(sourceFile);
// List the blobs in the container.
Console.WriteLine("Listing blobs in container.");
BlobContinuationToken blobContinuationToken = null;
do
{
var results = await cloudBlobContainer.ListBlobsSegmentedAsync(null, blobContinuationToken);
// Get the value of the continuation token returned by the listing call.
blobContinuationToken = results.ContinuationToken;
foreach (IListBlobItem item in results.Results)
{
Console.WriteLine(item.Uri);
}
} while (blobContinuationToken != null); // Loop while the continuation token is not null.
destinationFile = sourceFile.Replace(".txt", "_DOWNLOADED.txt");
Console.WriteLine("Downloading blob to {0}", destinationFile);
Console.WriteLine();
await cloudAppendBlob.DownloadToFileAsync(destinationFile, FileMode.Create);
File.WriteAllText(sourceFile, "Hello, World, I am good, how is your health!");
await cloudAppendBlob.UploadFromFileAsync(sourceFile);
await cloudAppendBlob.DeleteAsync();
}
catch (StorageException ex)
{
Console.WriteLine("Error returned from the service: {0}", ex.Message);
}
finally
{
// Console.WriteLine("Press any key to delete the sample files and example container.");
Console.ReadLine();
// Clean up resources. This includes the container and the two temp files.
//Console.WriteLine("Deleting the container and any blobs it contains");
if (cloudBlobContainer != null)
{
// await cloudBlobContainer.DeleteIfExistsAsync();
}
File.Delete(sourceFile);
File.Delete(destinationFile);
}
}
else
{
Console.WriteLine(
"A connection string has not been defined in the system environment variables. " +
"Add a environment variable named 'storageconnectionstring' with your storage " +
"connection string as a value.");
}
}
/// <inheritdoc />
public Task DeleteAsync(CancellationToken cancellationToken)
{
return(_sdk.DeleteAsync(DeleteSnapshotsOption.None, accessCondition: null, options: null, operationContext: null, cancellationToken: cancellationToken));
}
public static void Delete(this CloudAppendBlob blob)
{
blob.DeleteAsync().Wait();
}
public async Task AppendBlobCleanupAsync()
{
BlobContinuationToken continuationToken = null;
// work through the Blob Segments cleaning up as we go...
// (NOTE: there's currently no ListBlobsAsync method ;-) )
do
{
var listResult = await _tmpContainer.ListBlobsSegmentedAsync(
prefix : null,
useFlatBlobListing : true,
blobListingDetails : BlobListingDetails.None,
maxResults : null,
currentToken : continuationToken,
options : null,
operationContext : null);
foreach (IListBlobItem b in listResult.Results)
{
// list all blob in temp container, filter the ones that have "copied" metadata
if (b.GetType() == typeof(CloudAppendBlob))
{
CloudAppendBlob item = (CloudAppendBlob)b;
item.FetchAttributes();
if (item.Metadata.Keys.Contains("copied"))
{
Console.WriteLine($"Delete blob {item.Uri.ToString()}");
await item.DeleteAsync(DeleteSnapshotsOption.IncludeSnapshots,
accessCondition : null,
options : null,
operationContext : null);
}
else
{
if (item.Metadata.Keys.Contains("full"))
{
var targetBlob = await GetTargetBlockBlobAsync(item);
await CopyBlobAsync(item, targetBlob);
await FlagAsCopiedAysnc(item);
}
}
}
}
continuationToken = listResult.ContinuationToken;
} while (continuationToken != null);
foreach (IListBlobItem b in _tmpContainer.ListBlobs(null, true))
{
// list all blob in temp container, filter the ones that have "copied" metadata
if (b.GetType() == typeof(CloudAppendBlob))
{
CloudAppendBlob item = (CloudAppendBlob)b;
item.FetchAttributes();
if (item.Metadata.Keys.Contains("copied"))
{
Console.WriteLine($"Delete blob {item.Uri.ToString()}");
await item.DeleteAsync(DeleteSnapshotsOption.IncludeSnapshots,
accessCondition : null,
options : null,
operationContext : null);
}
else
{
if (item.Metadata.Keys.Contains("full"))
{
var targetBlob = await GetTargetBlockBlobAsync(item);
await CopyBlobAsync(item, targetBlob);
await FlagAsCopiedAysnc(item);
}
}
}
}
}
public async Task RunPermissionsTestBlobs(SharedAccessAccountPolicy policy)
{
CloudBlobClient blobClient = GenerateCloudBlobClient();
string containerName = "c" + Guid.NewGuid().ToString("N");
try
{
CloudStorageAccount account = new CloudStorageAccount(blobClient.Credentials, false);
string accountSASToken = account.GetSharedAccessSignature(policy);
StorageCredentials accountSAS = new StorageCredentials(accountSASToken);
CloudStorageAccount accountWithSAS = new CloudStorageAccount(accountSAS, blobClient.StorageUri, null, null, null);
CloudBlobClient blobClientWithSAS = accountWithSAS.CreateCloudBlobClient();
CloudBlobContainer containerWithSAS = blobClientWithSAS.GetContainerReference(containerName);
CloudBlobContainer container = blobClient.GetContainerReference(containerName);
// General pattern - If current perms support doing a thing with SAS, do the thing with SAS and validate with shared
// Otherwise, make sure SAS fails and then do the thing with shared key.
// Things to do:
// Create the container (Create / Write perms, Container RT)
// List containers with prefix (List perms, Service RT)
// Create an append blob (Create / Write perms, Object RT)
// Append a block to append blob (Add / Write perms, Object RT)
// Read the data from the append blob (Read perms, Object RT)
// Delete the blob (Delete perms, Object RT)
if ((((policy.Permissions & SharedAccessAccountPermissions.Create) == SharedAccessAccountPermissions.Create) || ((policy.Permissions & SharedAccessAccountPermissions.Write) == SharedAccessAccountPermissions.Write)) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Container) == SharedAccessAccountResourceTypes.Container))
{
await containerWithSAS.CreateAsync();
}
else
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => await containerWithSAS.CreateAsync(), "Create a container should fail with SAS without Create or Write and Container-level permissions.");
await container.CreateAsync();
}
Assert.IsTrue(await container.ExistsAsync());
if (((policy.Permissions & SharedAccessAccountPermissions.List) == SharedAccessAccountPermissions.List) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Service) == SharedAccessAccountResourceTypes.Service))
{
ContainerResultSegment segment = null;
BlobContinuationToken ct = null;
IEnumerable <CloudBlobContainer> results = null;
do
{
segment = await blobClientWithSAS.ListContainersSegmentedAsync(container.Name, ct);
ct = segment.ContinuationToken;
results = segment.Results;
}while(ct != null && !results.Any());
Assert.AreEqual(container.Name, segment.Results.First().Name);
}
else
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => { ContainerResultSegment segment = await blobClientWithSAS.ListContainersSegmentedAsync(container.Name, null); segment.Results.First(); }, "List containers should fail with SAS without List and Service-level permissions.");
}
string blobName = "blob";
CloudAppendBlob appendBlob = container.GetAppendBlobReference(blobName);
CloudAppendBlob appendBlobWithSAS = containerWithSAS.GetAppendBlobReference(blobName);
//Try creating credentials using SAS Uri directly
CloudAppendBlob appendBlobWithSASUri = new CloudAppendBlob(new Uri(container.Uri + accountSASToken));
if ((((policy.Permissions & SharedAccessAccountPermissions.Create) == SharedAccessAccountPermissions.Create) || ((policy.Permissions & SharedAccessAccountPermissions.Write) == SharedAccessAccountPermissions.Write)) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Object) == SharedAccessAccountResourceTypes.Object))
{
await appendBlobWithSAS.CreateOrReplaceAsync();
}
else
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => await appendBlobWithSAS.CreateOrReplaceAsync(), "Creating an append blob should fail with SAS without Create or Write and Object-level perms.");
await appendBlob.CreateOrReplaceAsync();
}
Assert.IsTrue(await appendBlob.ExistsAsync());
string blobText = "blobText";
if ((((policy.Permissions & SharedAccessAccountPermissions.Add) == SharedAccessAccountPermissions.Add) || ((policy.Permissions & SharedAccessAccountPermissions.Write) == SharedAccessAccountPermissions.Write)) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Object) == SharedAccessAccountResourceTypes.Object))
{
using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(blobText)))
{
await appendBlobWithSAS.AppendBlockAsync(stream);
}
}
else
{
using (MemoryStream memStream = new MemoryStream(Encoding.UTF8.GetBytes(blobText)))
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => await appendBlobWithSAS.AppendBlockAsync(memStream), "Append a block to an append blob should fail with SAS without Add or Write and Object-level perms.");
memStream.Seek(0, SeekOrigin.Begin);
await appendBlob.AppendBlockAsync(memStream);
}
}
Assert.AreEqual(blobText, await appendBlob.DownloadTextAsync());
if (((policy.Permissions & SharedAccessAccountPermissions.Read) == SharedAccessAccountPermissions.Read) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Object) == SharedAccessAccountResourceTypes.Object))
{
Assert.AreEqual(blobText, await appendBlobWithSAS.DownloadTextAsync());
}
else
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => await appendBlobWithSAS.DownloadTextAsync(), "Reading a blob's contents with SAS without Read and Object-level permissions should fail.");
}
if (((policy.Permissions & SharedAccessAccountPermissions.Delete) == SharedAccessAccountPermissions.Delete) &&
((policy.ResourceTypes & SharedAccessAccountResourceTypes.Object) == SharedAccessAccountResourceTypes.Object))
{
await appendBlobWithSAS.DeleteAsync();
}
else
{
await TestHelper.ExpectedExceptionAsync <StorageException>(async() => await appendBlobWithSAS.DeleteAsync(), "Deleting a blob with SAS without Delete and Object-level perms should fail.");
await appendBlob.DeleteAsync();
}
Assert.IsFalse(await appendBlob.ExistsAsync());
}
finally
{
blobClient.GetContainerReference(containerName).DeleteIfExistsAsync().Wait();
}
}
