public IVirtualFile GetFileIfCached(string virtualPath, System.Collections.Specialized.NameValueCollection queryString, IVirtualFile original)
{
if (!"disk".Equals(queryString["scache"], StringComparison.OrdinalIgnoreCase))
{
return(null);
}
if (this.AsyncModuleMode)
{
throw new InvalidOperationException("SourceDiskCache cannot be used in synchronous mode if AsyncModuleMode=true");
}
//Verify web.config exists in the cache folder.
writer.CheckWebConfigEvery5();
//Use alternate cache key if provided
string key = original is IVirtualFileSourceCacheKey ? ((IVirtualFileSourceCacheKey)original).GetCacheKey(false) : original.VirtualPath;
//If cached, serve it.
var r = cache.GetCachedFile(key, ".cache", delegate(Stream target)
{
using (Stream data = original.Open())
{ //Very long-running call
data.CopyToStream(target);
}
}, 15 * 1000, true);
if (r.Result == CacheQueryResult.Failed)
{
return(null);
}
if (r.Result == CacheQueryResult.Hit && cleaner != null)
{
cleaner.UsedFile(r.RelativePath, r.PhysicalPath);
}
return(new SourceVirtualFile(original.VirtualPath, delegate(){
return r.Data ?? File.Open(r.PhysicalPath, FileMode.Open, FileAccess.Read, FileShare.Read);
}));
}
public IVirtualFile GetFileIfCached(string virtualPath, System.Collections.Specialized.NameValueCollection queryString, IVirtualFile original)
{
if (!"disk".Equals(queryString["scache"], StringComparison.OrdinalIgnoreCase))
{
return(null);
}
//Verify web.config exists in the cache folder.
writer.CheckWebConfigEvery5();
//Use alternate cache key if provided
string key = original is IVirtualFileSourceCacheKey ? ((IVirtualFileSourceCacheKey)original).GetCacheKey(false) : original.VirtualPath;
//If cached, serve it.
var r = cache.GetCachedFile(key, ".cache", delegate(Stream target)
{
using (Stream data = original.Open())
{//Very long-running call
StreamExtensions.CopyToStream(data, target);
}
}, DateTime.MinValue, 15 * 1000, true);
if (r.Result == CacheQueryResult.Failed)
{
throw new ImageResizer.ImageProcessingException("Failed to acquire a lock on file \"" + r.PhysicalPath + "\" within 15 seconds. Source caching failed.");
}
if (r.Result == CacheQueryResult.Hit && cleaner != null)
{
cleaner.UsedFile(r.RelativePath, r.PhysicalPath);
}
return(new SourceVirtualFile(original.VirtualPath, delegate(){
return r.Data ?? File.Open(r.PhysicalPath, FileMode.Open, FileAccess.Read, FileShare.Read);
}));
}
