minio使用方式

minio是一款开源的对象存储服务器,兼容亚马逊的S3协议 , 对Kubernetes能够友好的支持,专为AI等云原生工作负载而设计

一.Docker安装

```
docker pull minio/minio

docker run -p 9999:9000 -p 9001:9001 --name minio \
  -d --restart=always \
  -e "MINIO_ROOT_USER=abc" \
  -e "MINIO_ROOT_PASSWORD=mr123321" \
  -v /mnt/data:/data \
  -v /mnt/config:/root/.minio minio/minio server /data \
  -v /etc/localtime:/etc/localtime:ro \
  --console-address ":9001"

```

说明：

--console-address是控制台端口

--address是api端口(默认9000)

二，Nginx使其支持SSL

server {
    listen 443 ssl;
    server_name XXXX.cn;
    
    ssl on;
        ssl_certificate      /etc/nginx/cert/7891070_XXXX.cn.pem;
        ssl_certificate_key  /etc/nginx/cert/7891070_XXXX.cn.key;
        ssl_session_timeout  5m;
        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers  on;

        location / {
           proxy_pass http://127.0.0.1:9999;
　　　　　　 # 此处有坑，如果不写默认是1.0，不支持文件分块传递 
           proxy_http_version 1.1;
           proxy_set_header X-Real-IP $remote_addr;
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           proxy_set_header X-Forwarded-Proto $scheme;
           proxy_set_header Host $http_host;
        }
}    

proxy_http_version 1.1;必须声明，否则minio获取文件时报错“The request signature we calculated does not match the signature you pr...”

三..NETCORE调用

public class MinioHelper
    {
        private const string accessKey = "abc";
        private const string secretKey = "mr123321";

        private const string bucketName = "minio";

        /// <summary>
        /// 内部连接端
        /// </summary>
        private static MinioClient inMinio = null;

        #region 单例构造
        private static MinioHelper _instance;
        private MinioHelper() { }
        public static MinioHelper Instance()
        {
            if (_instance == null)
            {
                _instance = new MinioHelper();

                var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json");
                var config = builder.Build();

                inMinio = new MinioClient(config.GetConnectionString("endpoint"),
                accessKey,
                secretKey
                );
            }
            return _instance;
        }
        #endregion

        public async Task PutFile(Stream filestream, string filePath, string contentType = null)
        {
            await this.checkBucket(inMinio);
            // Upload a file to bucket.
            await inMinio.PutObjectAsync(bucketName, filePath, filestream, filestream.Length, contentType);
        }

        public async Task<byte[]> GetFileMs(string filePath)
        {
            await this.checkBucket(inMinio);
            using (MemoryStream ms = new MemoryStream())
            {
                await inMinio.GetObjectAsync(bucketName, filePath, (stream) => { stream.CopyTo(ms); });
                return ms.GetBuffer();
            }
        }

        /// <summary>
        /// 获取文件是否存在
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public async Task<bool> GetFileStat(string filePath)
        {
            try
            {
                ObjectStat stat = await inMinio.StatObjectAsync(bucketName, filePath.Replace("//", "/"));
                return Path.GetFileName(stat.ObjectName) == Path.GetFileName(filePath);
            }
            catch (MinioException)
            {
                return false;
            }
        }

        /// <summary>
        /// 删除文件
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public async Task RemoveFile(string filePath)
        {
            await this.checkBucket(inMinio);
            // Upload a file to bucket.
            await inMinio.RemoveObjectAsync(bucketName, filePath);
        }

        /// <summary>
        /// 获取存储桶中的文件地址，有效期1小时
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public async Task<String> GetFileUrl(string filePath)
        {
            await this.checkBucket(inMinio);
            String url = await inMinio.PresignedGetObjectAsync(bucketName, filePath, 60 * 60 * 1);
            return url;
        }

        /// <summary>
        /// 检查存储桶是否存在
        /// </summary>
        /// <returns></returns>
        private async Task checkBucket(MinioClient minio)
        {
            bool found = await minio.BucketExistsAsync(bucketName);
            if (!found)
            {
                await minio.MakeBucketAsync(bucketName);
            }
        }

    }