public override async Task OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken)
{
log4net.LogManager.GetLogger(this.GetType()).Info("start: OnActionExecutedAsync");
if (CustomTimeSpanMethodClassType != null)
{
MambaDefinedShortTime mambaDefinedShortTimeObject = null;
var requestLocalPath = actionExecutedContext.Request.RequestUri.LocalPath;
mambaDefinedShortTimeObject = _mambaDefinedShortTimeObjects.FirstOrDefault(x => string.Compare(x.Key, requestLocalPath, true) == 0).Value;
if (mambaDefinedShortTimeObject == null)
{
if (string.IsNullOrWhiteSpace(CustomTimeSpanMethodName))
{
CustomTimeSpanMethodName = _defaultCustomTimeSpanMethodName;
}
var methodInfo = CustomTimeSpanMethodClassType.GetMethod(CustomTimeSpanMethodName);
if (methodInfo != null)
{
mambaDefinedShortTimeObject = new MambaDefinedShortTime(actionExecutedContext, methodInfo);
_mambaDefinedShortTimeObjects.Add(requestLocalPath, mambaDefinedShortTimeObject);
}
}
if (mambaDefinedShortTimeObject != null)
{
var _cacheTimeQuery = this.GetType().GetField("CacheTimeQuery", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
_cacheTimeQuery.SetValue(this, mambaDefinedShortTimeObject);
}
}
//Copy&Paste the OnActionExecutedAsync, instead of calling base.OnActionExecutedAsync(), because of [*]
#region Copy&Paste from CacheOutputAttribute, as is
if (actionExecutedContext.ActionContext.Response == null || !actionExecutedContext.ActionContext.Response.IsSuccessStatusCode)
{
return;
}
if (!IsCachingAllowed(actionExecutedContext.ActionContext, AnonymousOnly))
{
return;
}
var cacheTime = CacheTimeQuery.Execute(DateTime.UtcNow);
if (cacheTime.AbsoluteExpiration > DateTime.UtcNow || ExpirationMode == ExpirationMode.None)
{
var httpConfig = actionExecutedContext.Request.GetConfiguration();
var config = httpConfig.CacheOutputConfiguration();
var cacheKeyGenerator = config.GetCacheKeyGenerator(actionExecutedContext.Request, typeof(CustomCacheKeyGenerator));
if (cacheKeyGenerator is CustomCacheKeyGenerator)
{
((CustomCacheKeyGenerator)cacheKeyGenerator).CachePerUser = CachePerUser;
((CustomCacheKeyGenerator)cacheKeyGenerator).ApiName = ApiName;
((CustomCacheKeyGenerator)cacheKeyGenerator).HeadersToInlcudeInCacheKey = HeadersToInlcudeInCacheKey;
}
var responseMediaType = actionExecutedContext.Request.Properties[CurrentRequestMediaType] as MediaTypeHeaderValue ?? GetExpectedMediaType(httpConfig, actionExecutedContext.ActionContext);
var cachekey = cacheKeyGenerator.MakeCacheKey(actionExecutedContext.ActionContext, responseMediaType, ExcludeQueryStringFromCacheKey);
// Why do we check if it already exists in cache?
//if (!string.IsNullOrWhiteSpace(cachekey) && !(_webApiCache.Contains(cachekey)))
if (!string.IsNullOrWhiteSpace(cachekey))
{
SetEtag(actionExecutedContext.Response, CreateEtag(actionExecutedContext, cachekey, cacheTime));
var responseContent = actionExecutedContext.Response.Content;
if (responseContent != null)
{
var baseKey = config.MakeBaseCachekey(actionExecutedContext.ActionContext.ControllerContext.ControllerDescriptor.ControllerType.FullName, actionExecutedContext.ActionContext.ActionDescriptor.ActionName);
var contentType = responseContent.Headers.ContentType;
string etag = actionExecutedContext.Response.Headers.ETag.Tag;
var content = await responseContent.ReadAsByteArrayAsync();//.ConfigureAwait(false); [*]
responseContent.Headers.Remove("Content-Length");
if (_webApiCache is CustomCacheProvider)
{
((CustomCacheProvider)_webApiCache).ExpirationTimeSpan = cacheTime.ClientTimeSpan;
}
_webApiCache.Add(baseKey, string.Empty, cacheTime.AbsoluteExpiration);
_webApiCache.Add(cachekey, content, cacheTime.AbsoluteExpiration, baseKey);
_webApiCache.Add(cachekey + Constants.ContentTypeKey,
contentType,
cacheTime.AbsoluteExpiration, baseKey);
_webApiCache.Add(cachekey + Constants.EtagKey,
etag,
cacheTime.AbsoluteExpiration, baseKey);
}
}
}
ApplyCacheHeaders(actionExecutedContext.ActionContext.Response, cacheTime);
#endregion
log4net.LogManager.GetLogger(this.GetType()).Info("end: OnActionExecutedAsync");
}// end OnActionExecutedAsync()
}// end OnActionExecutedAsync()
public override void OnActionExecuting(HttpActionContext actionContext)
{
log4net.LogManager.GetLogger(this.GetType()).Debug("start: OnActionExecuting");
if (actionContext == null)
{
throw new ArgumentNullException("actionContext");
}
if (!IsCachingAllowed(actionContext, AnonymousOnly))
{
return;
}
var timer = (Stopwatch)actionContext.Request.Properties["logtimer"];
if (timer == null)
{
timer = new Stopwatch();
timer.Start();
}
var config = actionContext.Request.GetConfiguration();
EnsureCacheTimeQuery();
EnsureCache(config, actionContext.Request);
var cacheKeyGenerator = config.CacheOutputConfiguration().GetCacheKeyGenerator(actionContext.Request, typeof(CustomCacheKeyGenerator));
if (cacheKeyGenerator is CustomCacheKeyGenerator)
{
((CustomCacheKeyGenerator)cacheKeyGenerator).CachePerUser = CachePerUser;
((CustomCacheKeyGenerator)cacheKeyGenerator).ApiName = ApiName;
((CustomCacheKeyGenerator)cacheKeyGenerator).HeadersToInlcudeInCacheKey = HeadersToInlcudeInCacheKey;
}
var responseMediaType = GetExpectedMediaType(config, actionContext);
actionContext.Request.Properties[CurrentRequestMediaType] = responseMediaType;
var cachekey = cacheKeyGenerator.MakeCacheKey(actionContext, responseMediaType, ExcludeQueryStringFromCacheKey);
if (!_webApiCache.Contains(cachekey))
{
return;
}
if (actionContext.Request.Headers.IfNoneMatch != null)
{
var etag = _webApiCache.Get <string>(cachekey + Constants.EtagKey);
if (etag != null)
{
if (actionContext.Request.Headers.IfNoneMatch.Any(x => x.Tag == etag))
{
var time = CacheTimeQuery.Execute(DateTime.UtcNow);
var quickResponse = actionContext.Request.CreateResponse(HttpStatusCode.NotModified);
ApplyCacheHeaders(quickResponse, time);
actionContext.Response = quickResponse;
// Log Api Access
if (LogEnabled && !(bool)actionContext.Request.Properties["requestIsLogged"])
{
timer.Stop();
APILogger?.LogExposedAPIAccess(_id, actionContext, timer.Elapsed, true);
actionContext.Request.Properties["requestIsLogged"] = true;
}
return;
}
}
}
var val = _webApiCache.Get <byte[]>(cachekey);
if (val == null)
{
return;
}
var contenttype = _webApiCache.Get <MediaTypeHeaderValue>(cachekey + Constants.ContentTypeKey) ?? responseMediaType;
actionContext.Response = actionContext.Request.CreateResponse();
actionContext.Response.Content = new ByteArrayContent(val);
actionContext.Response.Content.Headers.ContentType = contenttype;
var responseEtag = _webApiCache.Get <string>(cachekey + Constants.EtagKey);
if (responseEtag != null)
{
SetEtag(actionContext.Response, responseEtag);
}
var cacheTime = CacheTimeQuery.Execute(DateTime.UtcNow);
ApplyCacheHeaders(actionContext.Response, cacheTime);
log4net.LogManager.GetLogger(this.GetType()).Debug("end: OnActionExecuting");
// Log Api Access
if (LogEnabled && !(bool)actionContext.Request.Properties["requestIsLogged"])
{
timer.Stop();
APILogger?.LogExposedAPIAccess(_id, actionContext, timer.Elapsed, true);
actionContext.Request.Properties["requestIsLogged"] = true;
}
}