public async Task <IActionResult> Image(string filename)
{
var invalidChars = Path.GetInvalidFileNameChars();
if (filename.IndexOfAny(invalidChars) >= 0)
{
return(BadRequest("invalid filename"));
}
_logger.LogTrace($"Requesting image file {filename}");
if (_blogConfig.ImageSettings.EnableCDNRedirect)
{
var imageUrl = _blogConfig.ImageSettings.CDNEndpoint.CombineUrl(filename);
return(Redirect(imageUrl));
}
var image = await _cache.GetOrCreateAsync(filename, async entry =>
{
_logger.LogTrace($"Image file {filename} not on cache, fetching image...");
entry.SlidingExpiration = TimeSpan.FromMinutes(_settings.CacheSlidingExpirationMinutes["Image"]);
var imageInfo = await _imageStorage.GetAsync(filename);
return(imageInfo);
});
if (null == image)
{
return(NotFound());
}
return(File(image.ImageBytes, image.ImageContentType));
}
public async Task <IActionResult> GetImageAsync(string filename, [FromServices] IMemoryCache cache)
{
try
{
var invalidChars = Path.GetInvalidFileNameChars();
if (filename.IndexOfAny(invalidChars) >= 0)
{
Logger.LogWarning($"Invalid filename attempt '{filename}'.");
return(BadRequest("invalid filename"));
}
Logger.LogTrace($"Requesting image file {filename}");
if (_cdnSettings.GetImageByCDNRedirect)
{
var imageUrl = Utils.CombineUrl(_cdnSettings.CDNEndpoint, filename);
return(Redirect(imageUrl));
}
var imageEntry = await cache.GetOrCreateAsync(filename, async entry =>
{
Logger.LogTrace($"Image file {filename} not on cache, fetching image...");
entry.SlidingExpiration = TimeSpan.FromMinutes(AppSettings.CacheSlidingExpirationMinutes["Image"]);
var imgBytesResponse = await _imageStorage.GetAsync(filename);
return(imgBytesResponse);
});
if (imageEntry.IsSuccess)
{
return(File(imageEntry.Item.ImageBytes, imageEntry.Item.ImageContentType));
}
Logger.LogError($"Error getting image, filename: {filename}, {imageEntry.Message}");
return(_blogConfig.ContentSettings.UseFriendlyNotFoundImage
? (IActionResult)File("~/images/image-not-found.png", "image/png")
: NotFound());
}
catch (Exception e)
{
Logger.LogError(e, $"Error requesting image {filename}");
return(ServerError());
}
}
public async Task <IActionResult> Image(string filename, [FromServices] IMemoryCache cache)
{
try
{
var invalidChars = Path.GetInvalidFileNameChars();
if (filename.IndexOfAny(invalidChars) >= 0)
{
return(BadRequest("invalid filename"));
}
_logger.LogTrace($"Requesting image file {filename}");
if (_imageStorageSettings.CDNSettings.EnableCDNRedirect)
{
var imageUrl = _imageStorageSettings.CDNSettings.CDNEndpoint.CombineUrl(filename);
return(Redirect(imageUrl));
}
var imageEntry = await cache.GetOrCreateAsync(filename, async entry =>
{
_logger.LogTrace($"Image file {filename} not on cache, fetching image...");
entry.SlidingExpiration = TimeSpan.FromMinutes(_settings.CacheSlidingExpirationMinutes["Image"]);
var imgBytesResponse = await _imageStorage.GetAsync(filename);
return(imgBytesResponse);
});
if (null == imageEntry)
{
return(NotFound());
}
return(File(imageEntry.ImageBytes, imageEntry.ImageContentType));
}
catch (Exception e)
{
_logger.LogError(e, $"Error requesting image {filename}");
return(StatusCode(StatusCodes.Status500InternalServerError));
}
}