public async Task <HttpResponseMessage> DeleteBlob(string container, string blob, string snapshot = null)
{
var requestWrapper = DashHttpRequestWrapper.Create(this.Request);
var headers = requestWrapper.Headers;
var queryParams = requestWrapper.QueryParameters;
bool dataBlobDeleted = false;
return(await DoHandlerAsync(String.Format("BlobController.DeleteBlob: {0}/{1}", container, blob),
async() => await NamespaceHandler.PerformNamespaceOperation(container, blob, async(namespaceBlob) =>
{
// We only need to delete the actual blob. We are leaving the namespace entry alone as a sort of cache.
if (!(await namespaceBlob.ExistsAsync()) || namespaceBlob.IsMarkedForDeletion)
{
return this.CreateResponse(HttpStatusCode.NotFound, headers);
}
// Delete the real data blob by forwarding the request onto the data account
if (!dataBlobDeleted)
{
var forwardedResponse = await ForwardRequestHandler(namespaceBlob, StorageOperationTypes.DeleteBlob);
if (!forwardedResponse.IsSuccessStatusCode)
{
return forwardedResponse;
}
dataBlobDeleted = true;
}
// See if we need to delete any replicas
if (namespaceBlob.IsReplicated)
{
await BlobReplicationHandler.EnqueueBlobReplicationAsync(namespaceBlob, true, false);
}
// Mark the namespace blob for deletion
await namespaceBlob.MarkForDeletionAsync();
return this.CreateResponse(HttpStatusCode.Accepted, headers);
})));
}
public async Task <HttpResponseMessage> PutBlobComp(string container, string blob, string comp)
{
var requestWrapper = DashHttpRequestWrapper.Create(this.Request);
var operation = StorageOperations.GetBlobOperation(requestWrapper);
switch (operation)
{
case StorageOperationTypes.SetBlobProperties:
case StorageOperationTypes.SetBlobMetadata:
case StorageOperationTypes.LeaseBlob:
case StorageOperationTypes.SnapshotBlob:
case StorageOperationTypes.PutPage:
return(await BasicBlobHandler(container, blob, requestWrapper, operation));
case StorageOperationTypes.PutBlock:
case StorageOperationTypes.PutBlockList:
return(await PutBlobHandler(container, blob, requestWrapper, operation));
case StorageOperationTypes.AbortCopyBlob:
/// Abort Copy Blob - http://msdn.microsoft.com/en-us/library/azure/jj159098.aspx
return(ProcessResultResponse(await BlobHandler.AbortCopyBlobAsync(
requestWrapper, container, blob, requestWrapper.QueryParameters.Value <string>("copyid"))));
default:
return(this.CreateResponse(HttpStatusCode.BadRequest, requestWrapper.Headers));
}
}
public async Task <HttpResponseMessage> GetBlobComp(string container, string blob, string comp, string snapshot = null)
{
var requestWrapper = DashHttpRequestWrapper.Create(this.Request);
var operation = StorageOperations.GetBlobOperation(requestWrapper);
switch (operation)
{
case StorageOperationTypes.GetBlobMetadata:
case StorageOperationTypes.GetBlockList:
case StorageOperationTypes.GetPageRanges:
return(await BasicBlobHandler(container, blob, requestWrapper, operation));
default:
return(this.CreateResponse(HttpStatusCode.BadRequest, requestWrapper.Headers));
}
}
public async Task <HttpResponseMessage> PutBlob(string container, string blob)
{
var requestWrapper = DashHttpRequestWrapper.Create(this.Request);
var operation = StorageOperations.GetBlobOperation(requestWrapper);
switch (operation)
{
case StorageOperationTypes.CopyBlob:
/// Copy Blob - https://msdn.microsoft.com/en-us/library/azure/dd894037.aspx
return(ProcessResultResponse(await BlobHandler.CopyBlobAsync(requestWrapper, container, blob, requestWrapper.Headers.Value <string>("x-ms-copy-source"))));
case StorageOperationTypes.PutBlob:
/// Put Blob - http://msdn.microsoft.com/en-us/library/azure/dd179451.aspx
return(await PutBlobHandler(container, blob, requestWrapper, operation));
default:
System.Diagnostics.Debug.Assert(false);
return(this.CreateResponse(HttpStatusCode.BadRequest, requestWrapper.Headers));
}
}
private async Task <HttpResponseMessage> GetBlobList(string container)
{
return(CreateResponse(await BlobListHandler.GetBlobListing(container, DashHttpRequestWrapper.Create(this.Request))));
}
async Task PreRequestHandlerExecuteAsync(Object sender, EventArgs e)
{
// Insert handling here for any requests which can potentially contain a body and that we intend to redirect. We must
// process the request here because if the client is using the Expect: 100-Continue header, then we should issue our
// final (redirect) status BEFORE IIS sends the 100 Continue response. This way the blob content is never sent to us.
var result = await WebOperationRunner.DoHandlerAsync("App.PreRequestHandlerExecuteAsync",
async() => await StorageOperationsHandler.HandlePrePipelineOperationAsync(DashHttpRequestWrapper.Create(this.Request, true)));
if (result != null)
{
switch (result.StatusCode)
{
case HttpStatusCode.Redirect:
this.Response.Redirect(result.Location, false);
if (!String.IsNullOrWhiteSpace(result.SignedLocation))
{
this.Response.AppendHeader("x-ms-redirect-signature", result.SignedLocation);
}
if (result.Headers != null)
{
foreach (var header in result.Headers
.SelectMany(headerGroup => headerGroup
.Select(headerItem => Tuple.Create(headerGroup.Key, headerItem))))
{
this.Response.AppendHeader(header.Item1, header.Item2);
}
}
break;
case HttpStatusCode.NotFound:
this.Response.StatusCode = (int)HttpStatusCode.NotFound;
this.Response.StatusDescription = "The specified blob does not exist.";
this.Response.ContentType = "application/xml";
this.Response.Write(String.Format(@"
<?xml version='1.0' encoding='utf-8'?>
<Error>
<Code>BlobNotFound</Code>
<Message>The specified blob does not exist.\n Time:{0:o}</Message>
</Error>", DateTime.UtcNow));
break;
default:
System.Diagnostics.Debug.Assert(false);
this.Response.StatusCode = (int)result.StatusCode;
break;
}
this.CompleteRequest();
}
}
async Task AuthorizeRequestAsync(Object sender, EventArgs e)
{
if (!await OperationRunner.DoActionAsync("App.AuthorizeRequestAsync",
async() => await RequestAuthorization.IsRequestAuthorizedAsync(DashHttpRequestWrapper.Create(this.Request, true))))
{
this.Response.StatusCode = (int)HttpStatusCode.Forbidden;
// Details lifted directly from Storage Service auth failure responses
this.Response.ContentType = "application/xml";
this.Response.StatusDescription = "Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.";
this.Response.Write(String.Format(@"
<?xml version='1.0' encoding='utf-8'?>
<Error>
<Code>AuthenticationFailed</Code>
<Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. Time:{0:o}</Message>
</Error>", DateTime.UtcNow));
this.CompleteRequest();
}
}
