public Task ProcessAsync(BlobProcessHandlerContext context)
{
var fileTypeCheckHandlerConfiguration = context.ContainerConfiguration.GetFileTypeCheckConfiguration();
// TODO: case sensitivity
if (fileTypeCheckHandlerConfiguration.AllowedFileTypeNames != null && fileTypeCheckHandlerConfiguration.AllowedFileTypeNames.Length > 0)
{
string fileExtensionName = Path.GetExtension(context.BlobName);
if (!fileExtensionName.IsNullOrEmpty())
{
if (!fileTypeCheckHandlerConfiguration.AllowedFileTypeNames.Contains(fileExtensionName.ToLower()))
{
throw new BusinessException(
code: "Dignite.Abp.BlobStoring:010002",
message: "File type is incompatible!" + "File type should be one of" + fileTypeCheckHandlerConfiguration.AllowedFileTypeNames.JoinAsString("/") + "!",
details: "File type should be one of" + fileTypeCheckHandlerConfiguration.AllowedFileTypeNames.JoinAsString("/") + "!"
);
}
}
else
{
throw new BusinessException(
code: "Dignite.Abp.BlobStoring:010003",
message: "File type is unrecognized!",
details: "Cannot get the file type of uploaded file!"
);
}
}
return(Task.CompletedTask);
}
public Task ProcessAsync(BlobProcessHandlerContext context)
{
var configuration = context.ContainerConfiguration.GetBlobSizeLimitConfiguration();
if (configuration.MaximumBlobSize * 1024 * 1024 < context.BlobStream.Length)
{
throw new BusinessException(
code: "Dignite.Abp.BlobStoring:010008",
message: "Blob object is too large",
details: $"The blob object size cannot exceed {configuration.MaximumBlobSize}M!"
);
}
return(Task.CompletedTask);
}
public Task ProcessAsync(BlobProcessHandlerContext context)
{
var configuration = context.ContainerConfiguration.GetImageResizeConfiguration();
try
{
using (Image image = Image.Load(context.BlobStream))
{
if (configuration.ImageSizeMustBeLargerThanPreset)
{
if (image.Width < configuration.ImageWidth || image.Height < configuration.ImageHeight)
{
throw new BusinessException(
code: "Dignite.Abp.BlobStoring:010004",
message: "Image size must be larger than Preset!",
details: "Uploaded image must be larger than: " + configuration.ImageWidth + "x" + configuration.ImageHeight
);
}
}
if (image.Width > configuration.ImageWidth || image.Height > configuration.ImageHeight)
{
image.Mutate(x =>
{
x.Resize(new ResizeOptions()
{
Mode = ResizeMode.Max,
Size = new Size(configuration.ImageWidth, configuration.ImageHeight)
});
});
var encoder = new SixLabors.ImageSharp.Formats.Jpeg.JpegEncoder()
{
Quality = 40
};
context.BlobStream.Position = 0;
image.Save(context.BlobStream, encoder);
context.BlobStream.SetLength(context.BlobStream.Position);
context.BlobStream.Position = 0;
}
}
}
catch (SixLabors.ImageSharp.InvalidImageContentException exception)
{
}
return(Task.CompletedTask);
}
private async Task BlobProcessHandlers(string name, Stream stream)
{
// blob process handlers
var processHandlers = Configuration.GetConfigurationOrDefault <ITypeList <IBlobProcessHandler> >(DigniteAbpBlobContainerConfigurationNames.BlobProcessHandlers, null);
if (processHandlers != null && processHandlers.Any())
{
var context = new BlobProcessHandlerContext(name, stream, Configuration, CurrentTenant, ServiceProvider);
using (var scope = ServiceProvider.CreateScope())
{
foreach (var handlerType in processHandlers)
{
var handler = scope.ServiceProvider
.GetRequiredService(handlerType)
.As <IBlobProcessHandler>();
await handler.ProcessAsync(context);
}
}
}
}
