public override void OnResultExecuted(ResultExecutedContext filterContext)
{
if (_originalWriter != null) // Must complete the caching
// new request to cache - add it to the cache
{
HtmlTextWriter cacheWriter = (HtmlTextWriter)_switchWriterMethod.Invoke(HttpContext.Current.Response, new object[] { _originalWriter });
string textWritten = ((StringWriter)cacheWriter.InnerWriter).ToString();
textWritten = CreateDonutHoles(textWritten);
CacheContainer container = new CacheContainer(textWritten, filterContext.HttpContext.Response);
filterContext.HttpContext.Cache.Add(_cacheKey, container, null, DateTime.Now.AddSeconds(_cacheDuration), Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null);
filterContext.HttpContext.Response.Write(ReplaceDonutHoles(textWritten));
var hardReload = filterContext.RequestContext.HttpContext.Request.Headers["Cache-Control"] == "no-cache";
filterContext.HttpContext.Response.Write("<!-- cache prep: " + _startTime.FmtMillisecondsElapsed() + " " + (hardReload ? "Hard Reload" : "") + " -->");
}
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
_originalWriter = null;
if (_cacheDuration == 0)
{
return;
}
_startTime = DateTime.Now;
_cacheKey = ComputeCacheKey(filterContext);
CacheContainer cachedOutput = (CacheContainer)filterContext.HttpContext.Cache[_cacheKey];
var hardReload = filterContext.RequestContext.HttpContext.Request.Headers["Cache-Control"] == "no-cache";
if (cachedOutput != null && !hardReload)
{
// cache hit
foreach (string header in cachedOutput.Headers)
{
// AF20141028 Don't include GZIP header
if (header != "Content-Encoding")
{
filterContext.HttpContext.Response.Headers[header] = cachedOutput.Headers[header];
}
}
filterContext.HttpContext.Response.Status = cachedOutput.Status;
filterContext.HttpContext.Response.StatusCode = cachedOutput.StatusCode;
filterContext.HttpContext.Response.SubStatusCode = cachedOutput.SubStatusCode;
filterContext.HttpContext.Response.ContentEncoding = cachedOutput.ContentEncoding;
filterContext.HttpContext.Response.HeaderEncoding = cachedOutput.HeaderEncoding;
filterContext.HttpContext.Response.Charset = cachedOutput.Charset;
filterContext.HttpContext.Response.ContentType = cachedOutput.ContentType;
filterContext.Result = new ContentResult {
Content = ReplaceDonutHoles(cachedOutput.Output) + "<!-- cache hit: " + _startTime.FmtMillisecondsElapsed() + " -->"
};
}
else
{
// new request to cache
StringWriter stringWriter = new StringWriterWithEncoding(filterContext.HttpContext.Response.ContentEncoding);
HtmlTextWriter newWriter = new HtmlTextWriter(stringWriter);
_originalWriter = (TextWriter)_switchWriterMethod.Invoke(HttpContext.Current.Response, new object[] { newWriter });
}
}
