d59f45fec4
* Hlint fixes - Will require major version bump as some types were changed from data to newtype * ormolu fixes after hlint
88 lines
3.0 KiB
Haskell
Executable File
88 lines
3.0 KiB
Haskell
Executable File
#!/usr/bin/env stack
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-- stack --resolver lts-14.11 runghc --package minio-hs
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--
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-- MinIO Haskell SDK, (C) 2017, 2018 MinIO, Inc.
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--
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-- Licensed under the Apache License, Version 2.0 (the "License");
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-- you may not use this file except in compliance with the License.
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-- You may obtain a copy of the License at
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--
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-- http://www.apache.org/licenses/LICENSE-2.0
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--
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-- Unless required by applicable law or agreed to in writing, software
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-- distributed under the License is distributed on an "AS IS" BASIS,
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-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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-- See the License for the specific language governing permissions and
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-- limitations under the License.
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--
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{-# LANGUAGE OverloadedStrings #-}
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import Control.Monad.IO.Class (liftIO)
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import qualified Data.ByteString.Char8 as B
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import Data.CaseInsensitive (original)
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import qualified Data.Conduit.Combinators as CC
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import qualified Data.Text.Encoding as E
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import Network.Minio
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-- | The following example uses minio's play server at
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-- https://play.min.io. The endpoint and associated
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-- credentials are provided via the libary constant,
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--
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-- > minioPlayCI :: ConnectInfo
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main :: IO ()
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main = do
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let bucket = "my-bucket"
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object = "my-object"
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kb15 = 15 * 1024
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-- Set query parameter to modify content disposition response
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-- header
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queryParam =
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[ ( "response-content-disposition",
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Just "attachment; filename=\"your-filename.txt\""
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)
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]
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res <- runMinio minioPlayCI $ do
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liftIO $ B.putStrLn "Upload a file that we will fetch with a presigned URL..."
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putObject bucket object (CC.repeat "a") (Just kb15) defaultPutObjectOptions
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liftIO $ putStrLn "Done. Object created at: my-bucket/my-object"
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-- Extract Etag of uploaded object
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oi <- statObject bucket object defaultGetObjectOptions
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let etag = oiETag oi
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-- Set header to add an if-match constraint - this makes sure
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-- the fetching fails if the object is changed on the server
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let headers = [("If-Match", E.encodeUtf8 etag)]
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-- Generate a URL with 7 days expiry time - note that the headers
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-- used above must be added to the request with the signed URL
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-- generated.
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url <-
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presignedGetObjectUrl
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"my-bucket"
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"my-object"
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(7 * 24 * 3600)
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queryParam
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headers
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return (headers, etag, url)
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case res of
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Left e -> putStrLn $ "presignedPutObject URL failed." ++ show e
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Right (headers, _, url) -> do
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-- We generate a curl command to demonstrate usage of the signed
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-- URL.
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let hdrOpt (k, v) = B.concat ["-H '", original k, ": ", v, "'"]
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curlCmd =
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B.intercalate " " $
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["curl --fail"]
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++ map hdrOpt headers
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++ ["-o /tmp/myfile", B.concat ["'", url, "'"]]
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putStrLn $
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"The following curl command would use the presigned "
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++ "URL to fetch the object and write it to \"/tmp/myfile\":"
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B.putStrLn curlCmd
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