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authorLibravatar Rutger Broekhoff2023-12-29 21:31:53 +0100
committerLibravatar Rutger Broekhoff2023-12-29 21:31:53 +0100
commit404aeae4545d2426c089a5f8d5e82dae56f5212b (patch)
tree2d84e00af272b39fc04f3795ae06bc48970e57b5 /vendor/github.com/minio/minio-go/v7/api-get-object-file.go
parent209d8b0187ed025dec9ac149ebcced3462877bff (diff)
downloadgitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.tar.gz
gitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.zip
Make Nix builds work
Diffstat (limited to 'vendor/github.com/minio/minio-go/v7/api-get-object-file.go')
-rw-r--r--vendor/github.com/minio/minio-go/v7/api-get-object-file.go127
1 files changed, 127 insertions, 0 deletions
diff --git a/vendor/github.com/minio/minio-go/v7/api-get-object-file.go b/vendor/github.com/minio/minio-go/v7/api-get-object-file.go
new file mode 100644
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@@ -0,0 +1,127 @@
1/*
2 * MinIO Go Library for Amazon S3 Compatible Cloud Storage
3 * Copyright 2015-2017 MinIO, Inc.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package minio
19
20import (
21 "context"
22 "io"
23 "os"
24 "path/filepath"
25
26 "github.com/minio/minio-go/v7/pkg/s3utils"
27)
28
29// FGetObject - download contents of an object to a local file.
30// The options can be used to specify the GET request further.
31func (c *Client) FGetObject(ctx context.Context, bucketName, objectName, filePath string, opts GetObjectOptions) error {
32 // Input validation.
33 if err := s3utils.CheckValidBucketName(bucketName); err != nil {
34 return err
35 }
36 if err := s3utils.CheckValidObjectName(objectName); err != nil {
37 return err
38 }
39
40 // Verify if destination already exists.
41 st, err := os.Stat(filePath)
42 if err == nil {
43 // If the destination exists and is a directory.
44 if st.IsDir() {
45 return errInvalidArgument("fileName is a directory.")
46 }
47 }
48
49 // Proceed if file does not exist. return for all other errors.
50 if err != nil {
51 if !os.IsNotExist(err) {
52 return err
53 }
54 }
55
56 // Extract top level directory.
57 objectDir, _ := filepath.Split(filePath)
58 if objectDir != "" {
59 // Create any missing top level directories.
60 if err := os.MkdirAll(objectDir, 0o700); err != nil {
61 return err
62 }
63 }
64
65 // Gather md5sum.
66 objectStat, err := c.StatObject(ctx, bucketName, objectName, StatObjectOptions(opts))
67 if err != nil {
68 return err
69 }
70
71 // Write to a temporary file "fileName.part.minio" before saving.
72 filePartPath := filePath + objectStat.ETag + ".part.minio"
73
74 // If exists, open in append mode. If not create it as a part file.
75 filePart, err := os.OpenFile(filePartPath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o600)
76 if err != nil {
77 return err
78 }
79
80 // If we return early with an error, be sure to close and delete
81 // filePart. If we have an error along the way there is a chance
82 // that filePart is somehow damaged, and we should discard it.
83 closeAndRemove := true
84 defer func() {
85 if closeAndRemove {
86 _ = filePart.Close()
87 _ = os.Remove(filePartPath)
88 }
89 }()
90
91 // Issue Stat to get the current offset.
92 st, err = filePart.Stat()
93 if err != nil {
94 return err
95 }
96
97 // Initialize get object request headers to set the
98 // appropriate range offsets to read from.
99 if st.Size() > 0 {
100 opts.SetRange(st.Size(), 0)
101 }
102
103 // Seek to current position for incoming reader.
104 objectReader, objectStat, _, err := c.getObject(ctx, bucketName, objectName, opts)
105 if err != nil {
106 return err
107 }
108
109 // Write to the part file.
110 if _, err = io.CopyN(filePart, objectReader, objectStat.Size); err != nil {
111 return err
112 }
113
114 // Close the file before rename, this is specifically needed for Windows users.
115 closeAndRemove = false
116 if err = filePart.Close(); err != nil {
117 return err
118 }
119
120 // Safely completed. Now commit by renaming to actual filename.
121 if err = os.Rename(filePartPath, filePath); err != nil {
122 return err
123 }
124
125 // Return.
126 return nil
127}