///<summary>Construct an instance bound to the currently executing http request. The id of the current request will be extracted using the supplied <see cref="IHttpRequestIdFetcher"/></summary>
public SingleHttpRequestUseGuard(IHttpRequestIdFetcher httpRequestIdFetcher)
{
Contract.Requires(httpRequestIdFetcher != null);
_httpRequestIdFetcher = httpRequestIdFetcher;
_initialRequestId = httpRequestIdFetcher.GetCurrent();
}
///<summary>Construct an instance bound to the currently executing http request. The id of the current request will be extracted using the supplied <see cref="IHttpRequestIdFetcher"/></summary>
public SingleHttpRequestUseGuard(IHttpRequestIdFetcher httpRequestIdFetcher)
{
Contract.Requires(httpRequestIdFetcher != null);
_httpRequestIdFetcher = httpRequestIdFetcher;
_initialRequestId = httpRequestIdFetcher.GetCurrent();
}
///<summary>Throws an exception if the request has changed since the guard was created.</summary>
override protected void InternalAssertNoChangeOccurred(object guarded)
{
var currentRequestId = _httpRequestIdFetcher.GetCurrent();
if (_initialRequestId != currentRequestId)
{
throw new MultiRequestAccessDetected(guarded, _initialRequestId, currentRequestId);
}
}