private async Task <CacheResult> ProcessAsync(IAsyncResponsePlan e)
{
//Verify web.config exists in the cache folder.
writer.CheckWebConfigEvery5();
//Cache the data to disk and return a path.
CacheResult r = await asyncCache.GetCachedFile(e.RequestCachingKey, e.EstimatedFileExtension, async delegate(Stream outStream){
await e.CreateAndWriteResultAsync(outStream, e);
}, CacheAccessTimeout, AsyncWrites);
//Fail
if (r.Result == CacheQueryResult.Failed)
{
GlobalPerf.Singleton.IncrementCounter("diskcache_timeout");
throw new ImageResizer.ImageProcessingException("Failed to acquire a lock on file \"" + r.PhysicalPath + "\" within " + CacheAccessTimeout + "ms. Caching failed.");
}
if (r.Result == CacheQueryResult.Hit && cleaner != null)
{
cleaner.UsedFile(r.RelativePath, r.PhysicalPath);
}
GlobalPerf.Singleton.IncrementCounter((r.Result == CacheQueryResult.Hit) ? "diskcache_hit" : "diskcache_miss");
return(r);
}
public CacheResult Process(IResponseArgs e)
{
//Query for the modified date of the source file. If the source file changes on us during the write,
//we (may) end up saving the newer version in the cache properly, but with an older modified date.
//This will not cause any actual problems from a behavioral standpoint - the next request for the
//image will cause the file to be overwritten and the modified date updated.
DateTime modDate = e.HasModifiedDate ? e.GetModifiedDateUTC() : DateTime.MinValue;
//Verify web.config exists in the cache folder.
writer.CheckWebConfigEvery5();
//Cache the data to disk and return a path.
CacheResult r = cache.GetCachedFile(e.RequestKey, e.SuggestedExtension, e.ResizeImageToStream, modDate, CacheAccessTimeout, AsyncWrites);
//Fail
if (r.Result == CacheQueryResult.Failed)
{
throw new ImageResizer.ImageProcessingException("Failed to acquire a lock on file \"" + r.PhysicalPath + "\" within " + CacheAccessTimeout + "ms. Caching failed.");
}
if (r.Result == CacheQueryResult.Hit && cleaner != null)
{
cleaner.UsedFile(r.RelativePath, r.PhysicalPath);
}
return(r);
}