/// <summary>
/// Implementation of the StartCopyFromBlob method. Result is a BlobAttributes object derived from the response headers.
/// </summary>
/// <param name="blob">The blob.</param>
/// <param name="attributes">The attributes.</param>
/// <param name="source">The URI of the source blob.</param>
/// <param name="sourceAccessCondition">An object that represents the access conditions for the source blob. If null, no condition is used.</param>
/// <param name="destAccessCondition">An object that represents the access conditions for the destination blob. If null, no condition is used.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>
/// A <see cref="RESTCommand{T}" /> that starts to copy the blob.
/// </returns>
/// <exception cref="System.ArgumentException">sourceAccessCondition</exception>
internal static RESTCommand <string> StartCopyFromBlobImpl(ICloudBlob blob, BlobAttributes attributes, Uri source, AccessCondition sourceAccessCondition, AccessCondition destAccessCondition, BlobRequestOptions options)
{
if (sourceAccessCondition != null && !string.IsNullOrEmpty(sourceAccessCondition.LeaseId))
{
throw new ArgumentException(SR.LeaseConditionOnSource, "sourceAccessCondition");
}
RESTCommand <string> putCmd = new RESTCommand <string>(blob.ServiceClient.Credentials, attributes.Uri);
putCmd.ApplyRequestOptions(options);
putCmd.BuildRequestDelegate = (uri, builder, serverTimeout, ctx) => BlobHttpWebRequestFactory.CopyFrom(uri, serverTimeout, source, sourceAccessCondition, destAccessCondition, ctx);
putCmd.SetHeaders = (r, ctx) => BlobHttpWebRequestFactory.AddMetadata(r, attributes.Metadata);
putCmd.SignRequest = blob.ServiceClient.AuthenticationHandler.SignRequest;
putCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.Accepted, resp, null /* retVal */, cmd, ex, ctx);
CopyState state = BlobHttpResponseParsers.GetCopyAttributes(resp);
attributes.Properties = BlobHttpResponseParsers.GetProperties(resp);
attributes.Metadata = BlobHttpResponseParsers.GetMetadata(resp);
attributes.CopyState = state;
return(state.CopyId);
};
return(putCmd);
}
/// <summary>
/// Updates this blob with the given attributes a the end of a fetch attributes operation.
/// </summary>
/// <param name="attributes">The new attributes.</param>
/// <param name="response">The response.</param>
/// <param name="ignoreMD5">if set to <c>true</c>, blob's MD5 will not be updated.</param>
/// <exception cref="System.InvalidOperationException"></exception>
internal static void UpdateAfterFetchAttributes(BlobAttributes attributes, HttpWebResponse response, bool ignoreMD5)
{
BlobProperties properties = BlobHttpResponseParsers.GetProperties(response);
// If BlobType is specified and the value returned from cloud is different,
// then it's a client error and we need to throw.
if (attributes.Properties.BlobType != BlobType.Unspecified && attributes.Properties.BlobType != properties.BlobType)
{
throw new InvalidOperationException(SR.BlobTypeMismatchExceptionMessage);
}
if (ignoreMD5)
{
properties.ContentMD5 = attributes.Properties.ContentMD5;
}
attributes.Properties = properties;
attributes.Metadata = BlobHttpResponseParsers.GetMetadata(response);
attributes.CopyState = BlobHttpResponseParsers.GetCopyAttributes(response);
}
/// <summary>
/// Extracts a <see cref="CopyState"/> object from the headers of a web response.
/// </summary>
/// <param name="response">The HTTP web response.</param>
/// <returns>A <see cref="CopyState"/> object, or null if the web response does not contain a copy status.</returns>
public static CopyState GetCopyAttributes(HttpResponseMessage response)
{
return(BlobHttpResponseParsers.GetCopyAttributes(response));
}