Minio .NET 新版API使用

 Minio新版API 有很多改动 网上搜索不到 做个记录。 

• 创建Client
  • 创建client的方式和以前差别不大

     var minioClient = new MinioClient()
     .WithEndpoint(AppSettings._minio?.EndPoint, (int)(AppSettings._minio?.Port))
     .WithCredentials(AppSettings._minio?.AccessKey, AppSettings._minio?.SecretKey)
     .Build();

    　　
• 创建桶并更改桶文件的过期时间
  • 　设置Lifecycle　　

    // 创建 bucket
    await minioClient.MakeBucketAsync(new MakeBucketArgs().WithBucket(bucketName));
    var rule = new LifecycleRule()
    {
        Expiration = new Expiration() { Days = 3 }
    };
    var args = new SetBucketLifecycleArgs();
    args.WithBucket(bucketName);
    args.WithLifecycleConfiguration(new LifecycleConfiguration() {
        Rules = new Collection<LifecycleRule> { rule }
    });
    await minioClient.SetBucketLifecycleAsync(args);

• 上传文件
  • 字节数组 byte[] byteArray　

    using (MemoryStream stream = new MemoryStream(byteArray))
    {
        stream.Position = 0;
        // Upload a file to bucket.
         await minioClient.PutObjectAsync(new PutObjectArgs()
             .WithBucket(bucketName)
            .WithObject(objectName)
            .WithObjectSize(dwSize)
            .WithStreamData(stream)
            .WithContentType("image/jpeg")).ConfigureAwait(false);
    }

• 下载文件
  • 流式下载文件　

    public static async Task<byte[]> DownLoadObjectAsync(string bucketName, string objectName)
    {
    MemoryStream resultStream = new MemoryStream();
    var getArgs = new GetObjectArgs()
        .WithBucket(bucketName)
        .WithObject(objectName)
        .WithCallbackStream(async (stream, cancellationToken) =>
        {
            await stream.CopyToAsync(resultStream, cancellationToken).ConfigureAwait(false);
            await stream.DisposeAsync().ConfigureAwait(false);
        });
        await minioClient.GetObjectAsync(getArgs);
        var resultByte = resultStream.GetBuffer();
        return resultByte;
    }