public void LeaseOperation(CloudBlob blob, string leaseId, LeaseAction action, int timeout)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var request = BlobRequest.Lease(transformedUri, timeout, action, leaseId);
creds.SignRequest(request);
request.GetResponse().Close();
}
private static void DoLeaseOperation(CloudBlob blob, string leaseId, LeaseAction action)
{
var credentials = blob.ServiceClient.Credentials;
var request = BlobRequest.Lease(new Uri(credentials.TransformUri(blob.Uri.AbsoluteUri)), 90,
action, leaseId);
credentials.SignRequest(request);
request.GetResponse().Close();
}
private static void DoLeaseOperation(CloudBlob blob, string leaseId, LeaseAction action)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, 60, action, leaseId);
creds.SignRequest(req);
req.GetResponse().Close();
}
protected override void DoSave(IConcurrencyControlContext context, T obj)
{
if (string.IsNullOrWhiteSpace(context.ObjectId))
{
throw new ArgumentNullException("context.ObjectId", "ObjectId cannot be null or empty");
}
if (context is OptimisticConcurrencyContext)
{
CloudBlob blob = this.Container.GetBlobReference(context.ObjectId);
blob.Properties.ContentType = "application/json";
var blobRequestOptions = new BlobRequestOptions()
{
AccessCondition = (context as OptimisticConcurrencyContext).AccessCondition
};
blob.UploadText(new JavaScriptSerializer().Serialize(obj), Encoding.Default, blobRequestOptions);
}
else if (context is PessimisticConcurrencyContext)
{
if (string.IsNullOrWhiteSpace((context as PessimisticConcurrencyContext).LockId))
{
throw new ArgumentNullException("context.LockId", "LockId cannot be null or empty");
}
var blobProperties = new BlobProperties();
blobProperties.ContentType = "application/json";
var updateText = BlobRequest.Put(
this.GetUri(context.ObjectId),
BlobRequestTimeout,
blobProperties,
BlobType.BlockBlob,
(context as PessimisticConcurrencyContext).LockId,
0);
using (var stream = new StreamWriter(updateText.GetRequestStream(), Encoding.Default))
{
stream.Write(new JavaScriptSerializer().Serialize(obj));
}
this.Account.Credentials.SignRequest(updateText);
using (var response = updateText.GetResponse())
{
if (response is HttpWebResponse &&
!HttpStatusCode.Created.Equals((response as HttpWebResponse).StatusCode))
{
TraceHelper.TraceError("Error writing leased blob '{0}': {1}", context.ObjectId, (response as HttpWebResponse).StatusDescription);
throw new InvalidOperationException((response as HttpWebResponse).StatusDescription);
}
}
}
else
{
throw new InvalidOperationException("IConcurrencyControlContext implementation cannot be handled");
}
}
/// <summary>
/// Uploads the block list.
/// </summary>
/// <param name="blocks">The blocks to upload.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>A <see cref="TaskSequence"/> that uploads the block list.</returns>
internal TaskSequence UploadBlockList(List <PutBlockListItem> blocks, BlobRequestOptions options)
{
if (options == null)
{
throw new ArgumentNullException("modifers");
}
var request = ProtocolHelper.GetWebRequest(this.ServiceClient, options, (timeout) => BlobRequest.PutBlockList(this.TransformedAddress, timeout, this.Properties, null));
options.AccessCondition.ApplyCondition(request);
BlobRequest.AddMetadata(request, this.Metadata);
using (var memoryStream = new SmallBlockMemoryStream(Constants.DefaultBufferSize))
{
BlobRequest.WriteBlockListBody(blocks, memoryStream);
CommonUtils.ApplyRequestOptimizations(request, memoryStream.Length);
memoryStream.Seek(0, SeekOrigin.Begin);
// Compute the MD5
var md5 = System.Security.Cryptography.MD5.Create();
request.Headers[HttpRequestHeader.ContentMd5] = Convert.ToBase64String(md5.ComputeHash(memoryStream));
this.ServiceClient.Credentials.SignRequest(request);
memoryStream.Seek(0, SeekOrigin.Begin);
// Retrieve the stream
var requestStreamTask = request.GetRequestStreamAsync();
yield return(requestStreamTask);
using (Stream requestStream = requestStreamTask.Result)
{
// Copy the data
var copyTask = new InvokeTaskSequenceTask(() => { return(memoryStream.WriteTo(requestStream)); });
yield return(copyTask);
// Materialize any exceptions
var scratch = copyTask.Result;
Console.WriteLine(scratch);
}
}
// Get the response
var responseTask = request.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout);
yield return(responseTask);
using (var response = responseTask.Result as HttpWebResponse)
{
ParseSizeAndLastModified(response);
this.Properties.Length = 0;
}
}
public static void SetMetadata(this CloudBlob blob, string leaseId)
{
var req = BlobRequest.SetMetadata(new Uri(blob.ServiceClient.Credentials.TransformUri(blob.Uri.AbsoluteUri)), 90, leaseId);
foreach (string key in blob.Metadata.Keys)
{
req.Headers.Add("x-ms-meta-" + key, blob.Metadata[key]);
}
blob.ServiceClient.Credentials.SignRequest(req);
req.GetResponse().Close();
}
public static string AcquireLease(this CloudBlob blob)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.AbsoluteUri));
var req = BlobRequest.Lease(transformedUri, 90, LeaseAction.Acquire, null);
blob.ServiceClient.Credentials.SignRequest(req);
using (var response = req.GetResponse()) {
return(response.Headers["x-ms-lease-id"]);
}
}
public static void ReleaseLease(this CloudBlob blob, string leaseId)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, 0, LeaseAction.Release, leaseId);
blob.ServiceClient.Credentials.SignRequest(req);
using (var response = req.GetResponse())
{
}
}
public bool AcquireLock(PessimisticConcurrencyContext lockContext)
{
var request = BlobRequest.Lease(this.GetUri(lockContext.ObjectId), BlobRequestTimeout, LeaseAction.Acquire, null);
this.Account.Credentials.SignRequest(request);
// add extra headers not supported by SDK - not supported by emulator yet (SDK 1.7)
////request.Headers["x-ms-version"] = "2012-02-12";
////request.Headers.Add("x-ms-lease-duration", lockContext.Duration.TotalSeconds.ToString());
try
{
using (var response = request.GetResponse())
{
if (response is HttpWebResponse &&
HttpStatusCode.Created.Equals((response as HttpWebResponse).StatusCode))
{
lockContext.LockId = response.Headers["x-ms-lease-id"];
return(true);
}
else
{
return(false);
}
}
}
catch (WebException e)
{
this._logger.LogWarning("Warning acquiring blob '{0}' lease: {1}", lockContext.ObjectId, e.Message);
if (WebExceptionStatus.ProtocolError.Equals(e.Status))
{
if (e.Response is HttpWebResponse)
{
if (HttpStatusCode.NotFound.Equals((e.Response as HttpWebResponse).StatusCode))
{
lockContext.LockId = null;
return(true);
}
else if (HttpStatusCode.Conflict.Equals((e.Response as HttpWebResponse).StatusCode))
{
lockContext.LockId = null;
return(false);
}
}
throw;
}
return(false);
}
catch (Exception e)
{
this._logger.LogError("Error acquiring blob '{0}' lease: {1}", lockContext.ObjectId, e.Message);
throw;
}
}
public string AcquireLease(CloudBlob blob, int timeout)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var request = BlobRequest.Lease(transformedUri, timeout, LeaseAction.Acquire, null);
blob.ServiceClient.Credentials.SignRequest(request);
using (var response = request.GetResponse())
{
return(response.Headers["x-ms-lease-id"]);
}
}
/// <summary>
/// Converts the source blob of a copy operation to an appropriate access URI, taking Shared Access Signature credentials into account.
/// </summary>
/// <param name="source">The source blob.</param>
/// <returns>A URI addressing the source blob, using SAS if appropriate.</returns>
internal static Uri SourceBlobToUri(ICloudBlob source)
{
Uri sourceUri = source.ServiceClient.Credentials.TransformUri(source.Uri);
if (source.SnapshotTime.HasValue)
{
UriQueryBuilder builder = new UriQueryBuilder();
builder.Add("snapshot", BlobRequest.ConvertDateTimeToSnapshotString(source.SnapshotTime.Value));
sourceUri = builder.AddToUri(sourceUri);
}
return(sourceUri);
}
public static string AcquireLease(this CloudBlob blob)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri,
60, // timeout (in seconds)
LeaseAction.Acquire, // as opposed to "break" "release" or "renew"
null); // name of the existing lease, if any
blob.ServiceClient.Credentials.SignRequest(req);
using (var response = req.GetResponse())
{
return(response.Headers["x-ms-lease-id"]);
}
}
/// <summary>
/// Gets the canonical name of the blob, formatted as /<account-name>/<container-name>/<blob-name>.
/// If <c>ignoreSnapshotTime</c> is <c>false</c> and this blob is a snapshot, the canonical name is augmented with a
/// query of the form ?snapshot=<snapshot-time>.
/// <para>This is used by both Shared Access and Copy blob operations.</para>
/// </summary>
/// <param name="ignoreSnapshotTime">Indicates if the snapshot time is ignored.</param>
/// <returns>The canonical name of the blob.</returns>
private string GetCanonicalName(bool ignoreSnapshotTime)
{
string accountName = this.ServiceClient.Credentials.AccountName;
string containerName = this.Container.Name;
string blobName = this.Name;
string canonicalName = string.Format("/{0}/{1}/{2}", accountName, containerName, blobName);
if (!ignoreSnapshotTime && this.SnapshotTime != null)
{
canonicalName += "?snapshot=" + BlobRequest.ConvertDateTimeToSnapshotString(this.SnapshotTime.Value);
}
return(canonicalName);
}
/// <summary>
/// Gets the canonical name of the blob, formatted as /<account-name>/<container-name>/<blob-name>.
/// If <c>ignoreSnapshotTime</c> is <c>false</c> and this blob is a snapshot, the canonical name is augmented with a
/// query of the form ?snapshot=<snapshot-time>.
/// <para>This is used by both Shared Access and Copy blob operations.</para>
/// </summary>
/// <param name="ignoreSnapshotTime">Indicates if the snapshot time is ignored.</param>
/// <returns>The canonical name of the blob.</returns>
private string GetCanonicalName(bool ignoreSnapshotTime)
{
string accountName = this.ServiceClient.Credentials.AccountName;
string containerName = this.Container.Name;
// Replace \ with / for uri compatibility when running under .net 4.5.
string blobName = this.Name.Replace('\\', '/');
string canonicalName = string.Format(CultureInfo.InvariantCulture, "/{0}/{1}/{2}", accountName, containerName, blobName);
if (!ignoreSnapshotTime && this.SnapshotTime != null)
{
canonicalName += "?snapshot=" + BlobRequest.ConvertDateTimeToSnapshotString(this.SnapshotTime.Value);
}
return(canonicalName);
}
// NOTE: This method doesn't do everything that the regular UploadText does.
// Notably, it doesn't update the BlobProperties of the blob (with the new
// ETag and LastModifiedTimeUtc). It also, like all the methods in this file,
// doesn't apply any retry logic. Use this at your own risk!
public static void UploadText(this CloudBlob blob, string text, string leaseId)
{
string url = blob.Uri.ToString();
if (blob.ServiceClient.Credentials.NeedsTransformUri)
{
url = blob.ServiceClient.Credentials.TransformUri(url);
}
var req = BlobRequest.Put(new Uri(url), 60, new BlobProperties(), BlobType.BlockBlob, leaseId, 0);
using (var writer = new StreamWriter(req.GetRequestStream()))
{
writer.Write(text);
}
blob.ServiceClient.Credentials.SignRequest(req);
req.GetResponse().Close();
}
static void SetLength(CloudPageBlob blob, long newLength, int timeout = 10000)
{
var credentials = blob.ServiceClient.Credentials;
var requestUri = blob.Uri;
if (credentials.NeedsTransformUri)
{
requestUri = new Uri(credentials.TransformUri(requestUri.ToString()));
}
var request = BlobRequest.SetProperties(requestUri, timeout, blob.Properties, null, newLength);
request.Timeout = timeout;
credentials.SignRequest(request);
using (request.GetResponse()) { }
}
public void Resize_Blob(CloudPageBlob pageBlob, CloudBlobClient blobStorage, long newBlobSize)
{
Uri requestUri = pageBlob.Uri;
if (blobStorage.Credentials.NeedsTransformUri)
{
requestUri = new Uri(blobStorage.Credentials.TransformUri(requestUri.ToString()));
}
HttpWebRequest request = BlobRequest.SetProperties(requestUri, timeout,
pageBlob.Properties, null, newBlobSize);
request.Timeout = timeout;
blobStorage.Credentials.SignRequest(request);
using (WebResponse response = request.GetResponse())
{
// call succeeded
};
}
public static void DoLeaseOperation(VLogger logger, CloudBlob blob, string leaseId, LeaseAction action, int AzureBlobLeaseTimeout)
{
try
{
if (blob == null || leaseId == null)
{
return;
}
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, AzureBlobLeaseTimeout, action, leaseId);
creds.SignRequest(req);
req.GetResponse().Close();
}
catch (WebException e)
{
Utils.structuredLog(logger, "WebException", e.Message + ". DoLeaseOperation, blob: " + blob.Name + ", leaseId: " + leaseId + ", action " + action);
}
}
/// <summary>
/// Cast out blob instance and bind it's metadata to metadata repeater
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnBlobDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
var metadataRepeater = e.Item.FindControl("blobMetadata") as Repeater;
var blob = ((ListViewDataItem)e.Item).DataItem as CloudBlob;
// If this blob is a snapshot, rename button to "Delete Snapshot"
if (blob != null)
{
if (blob.SnapshotTime.HasValue)
{
var delBtn = e.Item.FindControl("deleteBlob") as LinkButton;
if (delBtn != null)
{
delBtn.Text = "Delete Snapshot";
var snapshotRequest = BlobRequest.Get(new Uri(delBtn.CommandArgument), 0, blob.SnapshotTime.Value, null);
delBtn.CommandArgument = snapshotRequest.RequestUri.AbsoluteUri;
}
var snapshotBtn = e.Item.FindControl("SnapshotBlob") as LinkButton;
if (snapshotBtn != null)
{
snapshotBtn.Visible = false;
}
}
if (metadataRepeater != null)
{
// bind to metadata
metadataRepeater.DataSource = from key in blob.Metadata.AllKeys
select new
{
Name = key,
Value = blob.Metadata[key]
};
metadataRepeater.DataBind();
}
}
}
}
static string AcquireLease(CloudBlob blob)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.AbsoluteUri));
var req = BlobRequest.Lease(transformedUri, 10, LeaseAction.Acquire, null);
req.Headers.Add("x-ms-lease-duration", "60");
creds.SignRequest(req);
HttpWebResponse response;
try
{
response = (HttpWebResponse)req.GetResponse();
}
catch (WebException we)
{
var statusCode = ((HttpWebResponse)we.Response).StatusCode;
switch (statusCode)
{
case HttpStatusCode.Conflict:
case HttpStatusCode.NotFound:
case HttpStatusCode.RequestTimeout:
case HttpStatusCode.InternalServerError:
return(null);
default:
throw;
}
}
try
{
return(response.StatusCode == HttpStatusCode.Created
? response.Headers["x-ms-lease-id"]
: null);
}
finally
{
response.Close();
}
}
/// <summary>
/// Implementation method for the ClearPage methods.
/// </summary>
/// <param name="startOffset">The start offset. Must be multiples of 512.</param>
/// <param name="length">Length of the data range to be cleared. Must be multiples of 512.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>A <see cref="TaskSequence"/> that writes the pages.</returns>
private TaskSequence ClearPageImpl(long startOffset, long length, BlobRequestOptions options)
{
CommonUtils.AssertNotNull("options", options);
if (startOffset < 0 || startOffset % Protocol.Constants.PageSize != 0)
{
CommonUtils.ArgumentOutOfRange("startOffset", startOffset);
}
if (length <= 0 || length % Protocol.Constants.PageSize != 0)
{
CommonUtils.ArgumentOutOfRange("length", length);
}
PutPageProperties properties = new PutPageProperties()
{
Range = new PageRange(startOffset, startOffset + length - 1),
PageWrite = PageWrite.Clear,
};
var webRequest = ProtocolHelper.GetWebRequest(
this.ServiceClient,
options,
(timeout) => BlobRequest.PutPage(this.TransformedAddress, timeout, properties, null));
webRequest.ContentLength = 0;
// signing request needs Size to be set
this.ServiceClient.Credentials.SignRequest(webRequest);
// Get the response
var responseTask = webRequest.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout);
yield return(responseTask);
// Parse the response
using (HttpWebResponse webResponse = responseTask.Result as HttpWebResponse)
{
this.ParseSizeAndLastModified(webResponse);
}
}
public void ReleaseLock(PessimisticConcurrencyContext lockContext)
{
if (string.IsNullOrWhiteSpace(lockContext.LockId))
{
throw new ArgumentNullException("lockContext.LockId", "LockId cannot be null or empty");
}
var request = BlobRequest.Lease(this.GetUri(lockContext.ObjectId), BlobRequestTimeout, LeaseAction.Release, lockContext.LockId);
this.Account.Credentials.SignRequest(request);
using (var response = request.GetResponse())
{
if (response is HttpWebResponse &&
!HttpStatusCode.OK.Equals((response as HttpWebResponse).StatusCode))
{
this._logger.LogError("Error releasing blob '{0}' lease: {1}", lockContext.ObjectId, (response as HttpWebResponse).StatusDescription);
throw new InvalidOperationException((response as HttpWebResponse).StatusDescription);
}
}
}
static bool DoLeaseOperation(CloudBlob blob, string leaseId, LeaseAction action)
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, 10, action, leaseId);
creds.SignRequest(req);
HttpWebResponse response;
try
{
response = (HttpWebResponse)req.GetResponse();
}
catch (WebException we)
{
var statusCode = ((HttpWebResponse)we.Response).StatusCode;
switch (statusCode)
{
case HttpStatusCode.Conflict:
case HttpStatusCode.NotFound:
case HttpStatusCode.RequestTimeout:
case HttpStatusCode.InternalServerError:
return(false);
default:
throw;
}
}
try
{
var expectedCode = action == LeaseAction.Break ? HttpStatusCode.Accepted : HttpStatusCode.OK;
return(response.StatusCode == expectedCode);
}
finally
{
response.Close();
}
}
public static string AcquireLease(VLogger logger, CloudBlockBlob blob, int AzureBlobLeaseTimeout)
{
try
{
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, AzureBlobLeaseTimeout, // timeout (in seconds)
LeaseAction.Acquire, // as opposed to "break" "release" or "renew"
null); // name of the existing lease, if any
blob.ServiceClient.Credentials.SignRequest(req);
using (var response = req.GetResponse())
{
return(response.Headers["x-ms-lease-id"]);
}
}
catch (WebException e)
{
Utils.structuredLog(logger, "WebException", e.Message + ". AcquireLease, blob: " + blob);
return(null);
}
}
private static void DoLeaseOperation(CloudBlob blob, string leaseId, Microsoft.WindowsAzure.StorageClient.Protocol.LeaseAction action, NLog.Logger logger)
{
try
{
if (blob == null || leaseId == null)
{
return;
}
var creds = blob.ServiceClient.Credentials;
var transformedUri = new Uri(creds.TransformUri(blob.Uri.ToString()));
var req = BlobRequest.Lease(transformedUri, AzureBlobLeaseTimeout, action, leaseId);
creds.SignRequest(req);
req.GetResponse().Close();
}
catch (WebException e)
{
if (null != logger)
{
logger.ErrorException("DoLeaseOperation, blob: " + blob.Name + ", leaseId: " + leaseId + ", action " + action, e);
}
}
}
private Stream DownloadBlockFromBlob(CloudBlob blob, Block block, Queue <Block> blocksToDownload)
{
try
{
var blobGetRequest = BlobRequest.Get(blob.Uri, 60, null, null);
blobGetRequest.Headers.Add("x-ms-range", string.Format(CultureInfo.InvariantCulture, "bytes={0}-{1}", block.Offset, block.Offset + block.Length - 1));
var credentials = blob.ServiceClient.Credentials;
credentials.SignRequest(blobGetRequest);
var response = blobGetRequest.GetResponse() as HttpWebResponse;
return(response != null?response.GetResponseStream() : null);
}
catch
{
if (++block.Attempt > MaxRetries)
{
throw;
}
lock (blocksToDownload) blocksToDownload.Enqueue(block);
}
return(null);
}
protected virtual void PessimisticControlContextWriteStrategy(IConcurrencyControlContext context, T obj)
{
if (string.IsNullOrWhiteSpace((context as PessimisticConcurrencyContext).LockId))
{
throw new ArgumentNullException("context.LockId", "LockId cannot be null or empty");
}
var blobProperties = new BlobProperties();
var binarizedObject = this.BinarizeObjectForStreaming(blobProperties, obj);
var updateRequest = BlobRequest.Put(
this.GetUri(context.ObjectId),
BlobRequestTimeout,
blobProperties,
BlobType.BlockBlob,
(context as PessimisticConcurrencyContext).LockId,
0);
using (var writer = new BinaryWriter(updateRequest.GetRequestStream(), Encoding.Default))
{
writer.Write(binarizedObject);
}
this.Account.Credentials.SignRequest(updateRequest);
using (var response = updateRequest.GetResponse())
{
if (response is HttpWebResponse &&
!HttpStatusCode.Created.Equals((response as HttpWebResponse).StatusCode))
{
this._logger.LogError("Error writing leased blob '{0}': {1}", context.ObjectId, (response as HttpWebResponse).StatusDescription);
throw new InvalidOperationException((response as HttpWebResponse).StatusDescription);
}
}
}
/// <summary>
/// Gets the page ranges impl.
/// </summary>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <param name="setResult">The set result.</param>
/// <returns>A <see cref="TaskSequence"/> for getting the page ranges.</returns>
private TaskSequence GetPageRangesImpl(BlobRequestOptions options, Action <IEnumerable <PageRange> > setResult)
{
CommonUtils.AssertNotNull("options", options);
var webRequest = ProtocolHelper.GetWebRequest(this.ServiceClient, options, (timeout) => BlobRequest.GetPageRanges(this.TransformedAddress, timeout, this.SnapshotTime, null));
BlobRequest.AddMetadata(webRequest, this.Metadata);
this.ServiceClient.Credentials.SignRequest(webRequest);
var task = webRequest.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout);
yield return(task);
using (var webResponse = task.Result as HttpWebResponse)
{
var getPageRangesResponse = BlobResponse.GetPageRanges(webResponse);
List <PageRange> pageRanges = new List <PageRange>();
// materialize response as we need to close the webResponse
pageRanges.AddRange(getPageRangesResponse.PageRanges.ToList());
setResult(pageRanges);
this.ParseSizeAndLastModified(webResponse);
}
}
/// <summary>
/// Gets the download block list.
/// </summary>
/// <param name="typesOfBlocks">The types of blocks.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <param name="setResult">The result report delegate.</param>
/// <returns>A <see cref="TaskSequence"/> that gets the download block list.</returns>
internal TaskSequence GetDownloadBlockList(BlockListingFilter typesOfBlocks, BlobRequestOptions options, Action <IEnumerable <ListBlockItem> > setResult)
{
var request = ProtocolHelper.GetWebRequest(this.ServiceClient, options, (timeout) => BlobRequest.GetBlockList(this.TransformedAddress, timeout, this.SnapshotTime, typesOfBlocks, null));
this.ServiceClient.Credentials.SignRequest(request);
// Retrieve the stream
var requestStreamTask = request.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout);
yield return(requestStreamTask);
// Copy the data
using (var response = requestStreamTask.Result as HttpWebResponse)
{
using (var responseStream = response.GetResponseStream())
{
var blockListResponse = new GetBlockListResponse(responseStream);
setResult(ParseResponse(blockListResponse));
}
this.ParseSizeAndLastModified(response);
}
}
/// <summary>
/// Implementation method for the WritePage methods.
/// </summary>
/// <param name="pageData">The page data.</param>
/// <param name="startOffset">The start offset.</param>
/// <param name="sourceStreamPosition">The beginning position of the source stream prior to execution, negative if stream is unseekable.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>A <see cref="TaskSequence"/> that writes the pages.</returns>
private TaskSequence WritePageImpl(Stream pageData, long startOffset, long sourceStreamPosition, BlobRequestOptions options)
{
CommonUtils.AssertNotNull("options", options);
long length = pageData.Length;
// Logic to rewind stream on a retry
// For non seekable streams we need a way to detect the retry iteration so as to only attempt to execute once.
// The first attempt will have SourceStreamPosition = -1, which means the first iteration on a non seekable stream.
// The second attempt will have SourceStreamPosition = -2, anything below -1 is considered an abort. Since the Impl method
// does not have an execution context to be aware of what iteration is used the SourceStreamPosition is utilized as counter to
// differentiate between the first attempt and a retry.
if (sourceStreamPosition >= 0 && pageData.CanSeek)
{
if (sourceStreamPosition != pageData.Position)
{
pageData.Seek(sourceStreamPosition, 0);
}
}
else if (sourceStreamPosition < -1)
{
throw new NotSupportedException(string.Format(CultureInfo.CurrentCulture, SR.CannotRetryNonSeekableStreamError));
}
if (startOffset % Protocol.Constants.PageSize != 0)
{
CommonUtils.ArgumentOutOfRange("startOffset", startOffset);
}
long rangeStreamOffset = pageData.CanSeek ? pageData.Position : 0;
PutPageProperties properties = new PutPageProperties()
{
Range = new PageRange(startOffset, startOffset + length - rangeStreamOffset - 1),
PageWrite = PageWrite.Update,
};
if ((1 + properties.Range.EndOffset - properties.Range.StartOffset) % Protocol.Constants.PageSize != 0 ||
(1 + properties.Range.EndOffset - properties.Range.StartOffset) == 0)
{
CommonUtils.ArgumentOutOfRange("pageData", pageData);
}
var webRequest = ProtocolHelper.GetWebRequest(
this.ServiceClient,
options,
(timeout) => BlobRequest.PutPage(this.TransformedAddress, timeout, properties, null));
////BlobRequest.AddMetadata(webRequest, this.Metadata);
// Retrieve the stream
var requestStreamTask = webRequest.GetRequestStreamAsync();
yield return(requestStreamTask);
// Copy the data
using (var outputStream = requestStreamTask.Result)
{
var copyTask = new InvokeTaskSequenceTask(() => { return(pageData.WriteTo(outputStream)); });
yield return(copyTask);
// Materialize any exceptions
var scratch = copyTask.Result;
}
// signing request needs Size to be set
this.ServiceClient.Credentials.SignRequest(webRequest);
// Get the response
var responseTask = webRequest.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout);
yield return(responseTask);
// Parse the response
using (HttpWebResponse webResponse = responseTask.Result as HttpWebResponse)
{
this.ParseSizeAndLastModified(webResponse);
}
}
