git.iko.soy/typeable/minio-hs
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typeable/minio-hs/examples/PresignedPutObject.hs
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1#!/usr/bin/env stack
2-- stack --resolver lts-14.11 runghc --package minio-hs
4--
5-- MinIO Haskell SDK, (C) 2017, 2018 MinIO, Inc.
6--
7-- Licensed under the Apache License, Version 2.0 (the "License");
8-- you may not use this file except in compliance with the License.
9-- You may obtain a copy of the License at
10--
11-- http://www.apache.org/licenses/LICENSE-2.0
12--
13-- Unless required by applicable law or agreed to in writing, software
14-- distributed under the License is distributed on an "AS IS" BASIS,
15-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16-- See the License for the specific language governing permissions and
17-- limitations under the License.
18--
19{-# LANGUAGE OverloadedStrings #-}
21import qualified Data.ByteString.Char8 as B
22import Data.CaseInsensitive (original)
23import Network.Minio
25-- | The following example uses minio's play server at
26-- https://play.min.io. The endpoint and associated
27-- credentials are provided via the libary constant,
28--
29-- > minioPlayCI :: ConnectInfo
30main :: IO ()
31main = do
32 let -- Use headers to set user-metadata - note that this header will
33 -- need to be set when the URL is used to make an upload.
34 headers =
35 [ ( "x-amz-meta-url-creator",
36 "minio-hs-presigned-put-example"
37 )
38 ]
39 res <- runMinio minioPlayCI $ do
40 -- generate a URL with 7 days expiry time
41 presignedPutObjectUrl "my-bucket" "my-object" (7 * 24 * 3600) headers
43 case res of
44 Left e -> putStrLn $ "presignedPutObject URL failed." ++ show e
45 Right url -> do
46 -- We generate a curl command to demonstrate usage of the signed
47 -- URL.
48 let hdrOpt (k, v) = B.concat ["-H '", original k, ": ", v, "'"]
49 curlCmd =
50 B.intercalate " " $
51 ["curl "]
52 ++ map hdrOpt headers
53 ++ ["-T /tmp/myfile", B.concat ["'", url, "'"]]
55 putStrLn $
56 "The following curl command would use the presigned "
57 ++ "URL to upload the file at \"/tmp/myfile\":"
58 B.putStrLn curlCmd