private IActionResult DeliverAsset(IAssetEntity?asset, AssetQuery query)
{
query ??= new AssetQuery();
if (asset == null || asset.FileVersion < query.Version)
{
return(NotFound());
}
if (asset.IsProtected && !this.HasPermission(Permissions.AppAssetsRead))
{
return(StatusCode(403));
}
var fileVersion = query.Version;
if (fileVersion <= EtagVersion.Any)
{
fileVersion = asset.FileVersion;
}
Response.Headers[HeaderNames.ETag] = fileVersion.ToString();
if (query.CacheDuration > 0)
{
Response.Headers[HeaderNames.CacheControl] = $"public,max-age={query.CacheDuration}";
}
var handler = new Func <Stream, Task>(async bodyStream =>
{
var resizeOptions = query.ToResizeOptions(asset);
if (asset.Type == AssetType.Image && resizeOptions != null)
{
var resizedAsset = $"{asset.Id}_{asset.FileVersion}_{resizeOptions}";
try
{
await assetStore.DownloadAsync(resizedAsset, bodyStream);
}
catch (AssetNotFoundException)
{
using (Profiler.Trace("Resize"))
{
using (var sourceStream = GetTempStream())
{
using (var destinationStream = GetTempStream())
{
using (Profiler.Trace("ResizeDownload"))
{
await assetFileStore.DownloadAsync(asset.Id, fileVersion, sourceStream);
sourceStream.Position = 0;
}
using (Profiler.Trace("ResizeImage"))
{
await assetThumbnailGenerator.CreateThumbnailAsync(sourceStream, destinationStream, resizeOptions);
destinationStream.Position = 0;
}
using (Profiler.Trace("ResizeUpload"))
{
await assetStore.UploadAsync(resizedAsset, destinationStream);
destinationStream.Position = 0;
}
await destinationStream.CopyToAsync(bodyStream);
}
}
}
}
}
else
{
await assetFileStore.DownloadAsync(asset.Id, fileVersion, bodyStream);
}
});
if (query.Download == 1 || asset.Type != AssetType.Image)
{
return(new FileCallbackResult(asset.MimeType, asset.FileName, true, handler));
}
else
{
return(new FileCallbackResult(asset.MimeType, null, true, handler));
}
}
private IActionResult DeliverAsset(IAssetEntity?asset, AssetQuery query)
{
query ??= new AssetQuery();
if (asset == null || asset.FileVersion < query.Version)
{
return(NotFound());
}
if (asset.IsProtected && !this.HasPermission(Permissions.AppAssetsRead))
{
return(StatusCode(403));
}
var fileVersion = query.Version;
if (fileVersion <= EtagVersion.Any)
{
fileVersion = asset.FileVersion;
}
Response.Headers[HeaderNames.ETag] = fileVersion.ToString();
if (query.CacheDuration > 0)
{
Response.Headers[HeaderNames.CacheControl] = $"public,max-age={query.CacheDuration}";
}
var handler = new Func <Stream, Task>(async bodyStream =>
{
var resizeOptions = query.ToResizeOptions(asset);
if (asset.Type == AssetType.Image && resizeOptions.IsValid)
{
var resizedAsset = $"{asset.Id}_{asset.FileVersion}_{resizeOptions}";
if (query.ForceResize)
{
await ResizeAsync(asset, bodyStream, resizedAsset, fileVersion, resizeOptions, true);
}
else
{
try
{
await assetStore.DownloadAsync(resizedAsset, bodyStream);
}
catch (AssetNotFoundException)
{
await ResizeAsync(asset, bodyStream, resizedAsset, fileVersion, resizeOptions, false);
}
}
}
else
{
await assetFileStore.DownloadAsync(asset.Id, fileVersion, bodyStream);
}
});
if (query.Download == 1 || asset.Type != AssetType.Image)
{
return(new FileCallbackResult(asset.MimeType, asset.FileName, true, handler));
}
else
{
return(new FileCallbackResult(asset.MimeType, null, true, handler));
}
}