public override async Task <Stream> GetOrNullAsync(FileProviderGetArgs args)
{
var fileName = MinioFileNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!await FileExistsAsync(client, containerName, fileName))
{
return(null);
}
var memoryStream = new MemoryStream();
await client.GetObjectAsync(containerName, fileName, async stream =>
{
if (stream != null)
{
await stream.CopyToAsync(memoryStream);
}
else
{
memoryStream = null;
}
});
return(memoryStream);
}
public override async Task <bool> ExistsAsync(FileProviderExistsArgs args)
{
var fileName = MinioFileNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
return(await FileExistsAsync(client, containerName, fileName));
}
public override async Task <bool> DeleteAsync(FileProviderDeleteArgs args)
{
var fileName = MinioFileNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (await FileExistsAsync(client, containerName, fileName))
{
await client.RemoveObjectAsync(containerName, fileName);
return(true);
}
return(false);
}
public override async Task <bool> DownloadAsync(FileProviderDownloadArgs args)
{
var fileName = MinioFileNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!await FileExistsAsync(client, containerName, fileName))
{
return(false);
}
await client.GetObjectAsync(containerName, fileName, args.Path);
return(true);
}
public override async Task <string> SaveAsync(FileProviderSaveArgs args)
{
var fileName = MinioFileNameCalculator.Calculate(args);
var configuration = args.Configuration.GetMinioConfiguration();
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!args.OverrideExisting && await FileExistsAsync(client, containerName, fileName))
{
throw new FileAlreadyExistsException($"Saving File '{args.FileId}' does already exists in the container '{containerName}'! Set {nameof(args.OverrideExisting)} if it should be overwritten.");
}
if (configuration.CreateBucketIfNotExists)
{
await CreateBucketIfNotExists(client, containerName);
}
await client.PutObjectAsync(containerName, fileName, args.FileStream, args.FileStream.Length);
return(args.FileId);
}
public override async Task <string> GetAccessUrlAsync(FileProviderAccessArgs args)
{
if (!args.Configuration.HttpAccess)
{
return(string.Empty);
}
var fileName = MinioFileNameCalculator.Calculate(args);
var client = GetMinioClient(args);
var containerName = GetContainerName(args);
if (!await FileExistsAsync(client, containerName, fileName))
{
return(string.Empty);
}
var expiresInt = 600;
if (args.Expires.HasValue && args.Expires > Clock.Now)
{
expiresInt = Convert.ToInt32((args.Expires.Value - Clock.Now).TotalSeconds);
}
return(await client.PresignedGetObjectAsync(containerName, fileName, expiresInt));
}
