public override async Task <string> GetAccessUrlAsync(FileProviderAccessArgs args)
{
var container = await DatabaseFileContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(string.Empty);
}
if (!container.HttpSupport)
{
return(string.Empty);
}
var file = await DatabaseFileRepository.FindAsync(
container.Id,
args.FileId,
args.CancellationToken);
if (file == null)
{
return(string.Empty);
}
return(BuildAccessUrl(container, file.Name));
}
public override async Task <bool> DownloadAsync(FileProviderDownloadArgs args)
{
var container = await DatabaseFileContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(false);
}
var file = await DatabaseFileRepository.FindAsync(
container.Id,
args.FileId,
args.CancellationToken
);
if (file == null)
{
return(false);
}
using (var fs = new FileStream(args.Path, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
await fs.WriteAsync(file.Content, 0, file.Content.Length);
}
return(true);
}
public override async Task <Stream> GetOrNullAsync(FileProviderGetArgs args)
{
var container = await DatabaseFileContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(null);
}
var file = await DatabaseFileRepository.FindAsync(
container.Id,
args.FileId,
args.CancellationToken
);
if (file == null)
{
return(null);
}
return(new MemoryStream(file.Content));
}
protected virtual async Task <DatabaseFileContainer> GetOrCreateContainerAsync(
string name,
CancellationToken cancellationToken = default)
{
var container = await DatabaseFileContainerRepository.FindAsync(name, cancellationToken);
if (container != null)
{
return(container);
}
container = new DatabaseFileContainer(GuidGenerator.Create(), name, CurrentTenant.Id);
await DatabaseFileContainerRepository.InsertAsync(container, cancellationToken : cancellationToken);
return(container);
}
public override async Task <bool> ExistsAsync(FileProviderExistsArgs args)
{
var container = await DatabaseFileContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(false);
}
return(await DatabaseFileRepository.ExistsAsync(
container.Id,
args.FileId,
args.CancellationToken
));
}
public override async Task <bool> DeleteAsync(FileProviderDeleteArgs args)
{
var container = await DatabaseFileContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(false);
}
return(await DatabaseFileRepository.DeleteAsync(
container.Id,
args.FileId,
autoSave : true,
cancellationToken : args.CancellationToken
));
}
