/// <summary>
/// Releases the blob resources used by the stream.
/// </summary>
public void Dispose()
{
if (this.originalStream != null)
{
this.originalStream.Dispose();
this.originalStream = null;
}
}
/// <summary>
/// Initializes a new instance of the BlobWriteStream class for a page blob.
/// </summary>
/// <param name="pageBlob">Blob reference to write to.</param>
/// <param name="pageBlobSize">Size of the page blob.</param>
/// <param name="createNew">Use <c>true</c> if the page blob is newly created, <c>false</c> otherwise.</param>
/// <param name="accessCondition">An <see cref="AccessCondition"/> object that represents the condition that must be met in order for the request to proceed. If <c>null</c>, no condition is used.</param>
/// <param name="options">A <see cref="BlobRequestOptions"/> object that specifies additional options for the request.</param>
/// <param name="operationContext">An <see cref="OperationContext"/> object that represents the context for the current operation.</param>
/// <param name="transform">The ICryptoTransform function for the request.</param>
internal BlobEncryptedWriteStream(CloudPageBlob pageBlob, long pageBlobSize, bool createNew, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext, ICryptoTransform transform)
{
CommonUtility.AssertNotNull("transform", transform);
if (options.EncryptionPolicy.EncryptionMode != BlobEncryptionMode.FullBlob)
{
throw new InvalidOperationException(SR.InvalidEncryptionMode, null);
}
// Since this is done on the copy of the options object that the client lib maintains and not on the user's options object and is done after getting
// the transform function, it should be fine. Setting this ensures that an error is not thrown when PutPage is called internally from the write method on the stream.
options.SkipEncryptionPolicyValidation = true;
this.transform = transform;
this.writeStream = new BlobWriteStream(pageBlob, pageBlobSize, createNew, accessCondition, options, operationContext)
{
IgnoreFlush = true
};
this.cryptoStream = new CryptoStream(this.writeStream, transform, CryptoStreamMode.Write);
}
/// <summary>
/// Initializes a new instance of the BlobWriteStreamHelper class for an append blob.
/// </summary>
/// <param name="appendBlob">Blob reference to write to.</param>
/// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
internal BlobWriteStreamHelper(CloudAppendBlob appendBlob, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
{
this.originalStream = new BlobWriteStream(appendBlob, accessCondition, options, operationContext);
this.originalStreamAsOutputStream = this.originalStream.AsOutputStream();
}
/// <summary>
/// Initializes a new instance of the BlobWriteStreamHelper class for a page blob.
/// </summary>
/// <param name="pageBlob">Blob reference to write to.</param>
/// <param name="pageBlobSize">Size of the page blob.</param>
/// <param name="createNew">Use <c>true</c> if the page blob is newly created, <c>false</c> otherwise.</param>
/// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
internal BlobWriteStreamHelper(CloudPageBlob pageBlob, long pageBlobSize, bool createNew, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext)
{
this.originalStream = new BlobWriteStream(pageBlob, pageBlobSize, createNew, accessCondition, options, operationContext);
this.originalStreamAsOutputStream = this.originalStream.AsOutputStream();
}