/// <summary>
/// The execute.
/// </summary>
/// <param name="context">
/// The context.
/// </param>
/// <exception cref="HttpResponseException">
/// There is a matching ETag
/// </exception>
protected override void Execute(CodeActivityContext context)
{
if (this.Request.Get(context).Headers.IfMatch.Any(etag => EntityTag.IsMatchingTag(this.ETag.Get(context), etag.Tag)))
{
throw new HttpResponseException(HttpStatusCode.PreconditionFailed);
}
}
/// <summary>
/// The check conditional update.
/// </summary>
/// <param name="request">
/// The request.
/// </param>
/// <param name="resource">
/// The resource.
/// </param>
/// <exception cref="HttpResponseException">
/// The precondition failed
/// </exception>
private static void CheckIfMatch(HttpRequestMessage request, Sample resource)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (resource == null)
{
throw new ArgumentNullException("resource");
}
// No etags
if (request.Headers.IfMatch.Count == 0)
{
return;
}
// If there is no matching etag, the pre-condition fails
if (!request.Headers.IfMatch.Any(etag => EntityTag.IsMatchingTag(resource.Tag, etag.Tag)))
{
throw new HttpResponseException(HttpStatusCode.PreconditionFailed);
}
}
