// (C) 2003 Novell, Inc (http://www.novell.com)
//
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System.IO;
using System.Web;
+using System.Web.Util;
+using System.Collections;
namespace System.Web.Caching {
internal sealed class OutputCacheModule : IHttpModule {
+
+ private CacheItemRemovedCallback response_removed;
public OutputCacheModule ()
{
app.AddOnUpdateRequestCacheAsync (
new BeginEventHandler (OnBeginUpdateCache),
new EndEventHandler (OnEndUpdateCache));
+
+ response_removed = new CacheItemRemovedCallback (OnRawResponseRemoved);
}
IAsyncResult OnBeginRequestCache (object o, EventArgs args, AsyncCallback cb, object data)
{
HttpApplication app = (HttpApplication) o;
HttpContext context = app.Context;
-
-
+
string vary_key = context.Request.FilePath;
- CachedVaryBy varyby = context.Cache [vary_key] as CachedVaryBy;
- string key;
+ CachedVaryBy varyby = context.Cache [vary_key] as CachedVaryBy;
+ string key;
CachedRawResponse c;
-
- if (varyby == null)
- goto leave;
-
- key = varyby.CreateKey (vary_key, context.Request);
- c = context.Cache [key] as CachedRawResponse;
-
- if (c != null && context.Timestamp < c.Policy.Expires) {
+ if (varyby == null)
+ goto leave;
+
+ key = varyby.CreateKey (vary_key, context);
+ c = context.Cache [key] as CachedRawResponse;
+
+ if (c != null) {
+
context.Response.ClearContent ();
context.Response.BinaryWrite (c.GetData (), 0, c.ContentLength);
context.Response.ClearHeaders ();
+ c.DateHeader.Value = TimeUtil.ToUtcTimeString (DateTime.Now);
context.Response.SetCachedHeaders (c.Headers);
+
context.Response.StatusCode = c.StatusCode;
context.Response.StatusDescription = c.StatusDescription;
app.CompleteRequest ();
- } else if (c != null) {
- context.Cache.Remove (key);
- }
+ }
- leave:
- HttpAsyncResult result = new HttpAsyncResult (cb,this);
+ leave:
+ HttpAsyncResult result = new HttpAsyncResult (cb,this);
result.Complete (true, o, null);
return result;
{
HttpApplication app = (HttpApplication) o;
HttpContext context = app.Context;
- HttpAsyncResult result;
-
- if (context.Response.IsCached)
- DoCacheInsert (context);
+ HttpAsyncResult result;
- result = new HttpAsyncResult (cb, this);
- result.Complete (true, o, null);
- return result;
- }
+ if (context.Response.IsCached && context.Response.StatusCode == 200 &&
+ !context.Trace.IsEnabled)
+ DoCacheInsert (context);
+
+ result = new HttpAsyncResult (cb, this);
+ result.Complete (true, o, null);
+ return result;
+ }
void OnEndUpdateCache (IAsyncResult result)
{
}
- private void DoCacheInsert (HttpContext context)
- {
- string vary_key = context.Request.FilePath;
- string key;
- CachedVaryBy varyby = context.Cache [vary_key] as CachedVaryBy;
- CachedRawResponse prev = null;
- bool lookup = true;
-
- if (varyby == null) {
- varyby = new CachedVaryBy (context.Response.Cache);
- context.Cache.InsertPrivate (vary_key, varyby, null,
- Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration,
- CacheItemPriority.Normal, null);
- lookup = false;
- }
-
- key = varyby.CreateKey (vary_key, context.Request);
-
- if (lookup)
- prev = context.Cache [key] as CachedRawResponse;
-
- if (IsExpired (context, prev)) {
- CachedRawResponse c = context.Response.GetCachedResponse ();
-
- context.Cache.InsertPrivate (key, c, null,
- context.Response.Cache.Expires,
+ private void DoCacheInsert (HttpContext context)
+ {
+ string vary_key = context.Request.FilePath;
+ string key;
+ CachedVaryBy varyby = context.Cache [vary_key] as CachedVaryBy;
+ CachedRawResponse prev = null;
+ bool lookup = true;
+
+ if (varyby == null) {
+ string path = context.Request.MapPath (vary_key);
+ string [] files = new string [] { path };
+ string [] keys = new string [0];
+ varyby = new CachedVaryBy (context.Response.Cache, vary_key);
+ context.Cache.InsertPrivate (vary_key, varyby,
+ new CacheDependency (files, keys),
+ Cache.NoAbsoluteExpiration,
Cache.NoSlidingExpiration,
CacheItemPriority.Normal, null);
+ lookup = false;
}
- }
+
+ key = varyby.CreateKey (vary_key, context);
- private bool IsExpired (HttpContext context, CachedRawResponse crr)
- {
- if (crr == null || context.Timestamp > crr.Policy.Expires)
- return true;
- return false;
+ if (lookup)
+ prev = context.Cache [key] as CachedRawResponse;
+
+ if (prev == null) {
+ CachedRawResponse c = context.Response.GetCachedResponse ();
+ string [] files = new string [] { };
+ string [] keys = new string [] { vary_key };
+ bool sliding = context.Response.Cache.Sliding;
+
+ context.Cache.InsertPrivate (key, c, new CacheDependency (files, keys),
+ (sliding ? Cache.NoAbsoluteExpiration :
+ context.Response.Cache.Expires),
+ (sliding ? TimeSpan.FromSeconds (
+ context.Response.Cache.Duration) :
+ Cache.NoSlidingExpiration),
+ CacheItemPriority.Normal, response_removed);
+ c.VaryBy = varyby;
+ varyby.ItemList.Add (key);
+ }
}
+ private void OnRawResponseRemoved (string key, object value, CacheItemRemovedReason reason)
+ {
+ CachedRawResponse c = (CachedRawResponse) value;
+
+ c.VaryBy.ItemList.Remove (key);
+ if (c.VaryBy.ItemList.Count != 0)
+ return;
+
+ Cache cache = HttpRuntime.Cache;
+ cache.Remove (c.VaryBy.Key);
+ }
}
}
projects / mono.git / blobdiff