private async Task <FileOperationResult <IImage> > GetImageFileOperation(string type, string regionUrn, Guid id, int?width, int?height, Func <Task <FileOperationResult <IImage> > > action, EntityTagHeaderValue etag = null)
{
try
{
var sw = Stopwatch.StartNew();
var sizeHash = (width ?? 0) + (height ?? 0);
var result = await CacheManager.GetAsync($"urn:{type}_by_id_operation:{id}:{sizeHash}", action, regionUrn);
if (!result.IsSuccess)
{
return(new FileOperationResult <IImage>(result.IsNotFoundResult, result.Messages));
}
if (result.ETag == etag && etag != null)
{
return(new FileOperationResult <IImage>(OperationMessages.NotModified));
}
var force = width.HasValue || height.HasValue;
var newWidth = width ?? Configuration.MaximumImageSize.Width;
var newHeight = height ?? Configuration.MaximumImageSize.Height;
if (result?.Data?.Bytes != null)
{
var resized = ImageHelper.ResizeImage(result?.Data?.Bytes, newWidth, newHeight, force);
if (resized != null)
{
result.Data.Bytes = resized.Item2;
result.ETag = EtagHelper.GenerateETag(HttpEncoder, result.Data.Bytes);
result.LastModified = DateTime.UtcNow;
if (resized.Item1)
{
Logger.LogTrace($"{type}: Resized [{id}], Width [{ newWidth}], Height [{ newHeight}], Forced [{ force }]");
}
}
else
{
Logger.LogTrace($"{type}: Image [{id}] Request returned Null Image, Forced [{ force }]");
}
}
sw.Stop();
return(new FileOperationResult <IImage>(result.Messages)
{
Data = result.Data,
ETag = result.ETag,
LastModified = result.LastModified,
ContentType = result.ContentType,
Errors = result?.Errors,
IsSuccess = result?.IsSuccess ?? false,
OperationTime = sw.ElapsedMilliseconds
});
}
catch (Exception ex)
{
Logger.LogError(ex, $"GetImageFileOperation Error, Type [{type}], id [{id}]");
}
return(new FileOperationResult <IImage>("System Error"));
}
private async Task <FileOperationResult <Image> > GetImageFileOperation(string type, string regionUrn, Guid id,
int?width, int?height, Func <Task <FileOperationResult <Image> > > action, EntityTagHeaderValue etag = null)
{
try
{
var sw = Stopwatch.StartNew();
var result = (await CacheManager.GetAsync($"urn:{type}_by_id_operation:{id}", action, regionUrn))
.Adapt <FileOperationResult <Image> >();
if (!result.IsSuccess)
{
return(new FileOperationResult <Image>(result.IsNotFoundResult, result.Messages));
}
if (result.ETag == etag)
{
return(new FileOperationResult <Image>(OperationMessages.NotModified));
}
if ((width.HasValue || height.HasValue) && result?.Data?.Bytes != null)
{
result.Data.Bytes = ImageHelper.ResizeImage(result?.Data?.Bytes, width.Value, height.Value);
result.ETag = EtagHelper.GenerateETag(HttpEncoder, result.Data.Bytes);
result.LastModified = DateTime.UtcNow;
if (width.Value != Configuration.ThumbnailImageSize.Width ||
height.Value != Configuration.ThumbnailImageSize.Height)
{
Logger.LogTrace($"{type}: Resized [{id}], Width [{width.Value}], Height [{height.Value}]");
}
}
sw.Stop();
return(new FileOperationResult <Image>(result.Messages)
{
Data = result.Data,
ETag = result.ETag,
LastModified = result.LastModified,
ContentType = result.ContentType,
Errors = result?.Errors,
IsSuccess = result?.IsSuccess ?? false,
OperationTime = sw.ElapsedMilliseconds
});
}
catch (Exception ex)
{
Logger.LogError(ex, $"GetImageFileOperation Error, Type [{type}], id [{id}]");
}
return(new FileOperationResult <Image>("System Error"));
}
private FileOperationResult <Image> GenerateFileOperationResult(Guid id, data.Image image, EntityTagHeaderValue etag = null, string contentType = "image/jpeg")
{
var imageEtag = EtagHelper.GenerateETag(this.HttpEncoder, image.Bytes);
if (EtagHelper.CompareETag(this.HttpEncoder, etag, imageEtag))
{
return(new FileOperationResult <Image>(OperationMessages.NotModified));
}
if (!image?.Bytes?.Any() ?? false)
{
return(new FileOperationResult <Image>(string.Format("ImageById Not Set [{0}]", id)));
}
return(new FileOperationResult <Image>(image?.Bytes?.Any() ?? false ? OperationMessages.OkMessage : OperationMessages.NoImageDataFound)
{
IsSuccess = true,
Data = image.Adapt <Image>(),
ContentType = contentType,
LastModified = (image.LastUpdated ?? image.CreatedDate),
ETag = imageEtag
});
}