用于Haskell的MinIO Client SDK
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2023-12-01
MinIO Haskell客户端SDK提供了简单的API,可以访问[MinIO](https://min.io)和与Amazon S3兼容的对象存储服务器。
最低需求
-Haskell 堆栈
安装
添加到您的项目
只需像往常一样,将minio-hs添加到项目的.cabal依赖项部分,或者如果使用hpack,则将其添加到package.yaml文件即可。
直接尝试 ghci
从主文件夹或任何非haskell项目目录中,只需运行:
stack install minio-hs
然后启动解释器会话,并使用以下命令浏览可用的API:
$ stack ghci
> :browse Network.Minio
示例
该 示例 文件夹中包含许多例子,你可以尝试和使用学习和与发展中国家自己的项目的帮助。
快速入门示例-文件上传器
该示例程序连接到MinIO对象存储服务器,在服务器上创建存储桶,然后将文件上传到存储桶。
在此示例中,我们将使用运行在https://play.min.io的MinIO服务器。随意使用此服务进行测试和开发。访问凭证存在于库中,并向公众开放。
FileUploader.hs
#!/usr/bin/env stack
-- stack --resolver lts-14.11 runghc --package minio-hs --package optparse-applicative --package filepath
--
-- MinIO Haskell SDK, (C) 2017-2019 MinIO, Inc.
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
import Network.Minio
import Data.Monoid ((<>))
import Data.Text (pack)
import Options.Applicative
import System.FilePath.Posix
import UnliftIO (throwIO, try)
import Prelude
-- | The following example uses minio's play server at
-- https://play.min.io. The endpoint and associated
-- credentials are provided via the libary constant,
--
-- > minioPlayCI :: ConnectInfo
--
-- optparse-applicative package based command-line parsing.
fileNameArgs :: Parser FilePath
fileNameArgs = strArgument
(metavar "FILENAME"
<> help "Name of file to upload to AWS S3 or a MinIO server")
cmdParser = info
(helper <*> fileNameArgs)
(fullDesc
<> progDesc "FileUploader"
<> header
"FileUploader - a simple file-uploader program using minio-hs")
main :: IO ()
main = do
let bucket = "my-bucket"
-- Parse command line argument
filepath <- execParser cmdParser
let object = pack $ takeBaseName filepath
res <- runMinio minioPlayCI $ do
-- Make a bucket; catch bucket already exists exception if thrown.
bErr <- try $ makeBucket bucket Nothing
-- If the bucket already exists, we would get a specific
-- `ServiceErr` exception thrown.
case bErr of
Left BucketAlreadyOwnedByYou -> return ()
Left e -> throwIO e
Right _ -> return ()
-- Upload filepath to bucket; object name is derived from filepath.
fPutObject bucket object filepath defaultPutObjectOptions
case res of
Left e -> putStrLn $ "file upload failed due to " ++ show e
Right () -> putStrLn "file upload succeeded."
运行FileUploader
./FileUploader.hs "path/to/my/file"
有助于
发展历程
建立:
git clone https://github.com/minio/minio-hs.git
cd minio-hs/
stack install
测试可以通过以下方式运行:
stack test
https://play.min.io 默认情况下,测试的一部分使用远程MinIO Play服务器。对于库开发,使用此远程服务器可能很慢。要在本地运行的MinIO live服务器上运行测试 http://localhost:9000 , 只需将环境设置MINIO_LOCAL为任何值(然后取消设置以切换回Play)即可。
要运行实时服务器测试,请设置构建标志,如下所示:
stack test --flag minio-hs:live-test
# OR against a local MinIO server with:
MINIO_LOCAL=1 stack test --flag minio-hs:live-test
对于每个更改,配置的CI系统始终运行两个测试套件。
可以使用以下方法在本地构建文档:
stack haddock