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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/pkg/credentials/chain.go
parent209d8b0187ed025dec9ac149ebcced3462877bff (diff)
downloadgitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.tar.gz
gitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.zip
Make Nix builds work
Diffstat (limited to 'vendor/github.com/minio/minio-go/v7/pkg/credentials/chain.go')
-rw-r--r--vendor/github.com/minio/minio-go/v7/pkg/credentials/chain.go88
1 files changed, 88 insertions, 0 deletions
diff --git a/vendor/github.com/minio/minio-go/v7/pkg/credentials/chain.go b/vendor/github.com/minio/minio-go/v7/pkg/credentials/chain.go
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1/*
2 * MinIO Go Library for Amazon S3 Compatible Cloud Storage
3 * Copyright 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 credentials
19
20// A Chain will search for a provider which returns credentials
21// and cache that provider until Retrieve is called again.
22//
23// The Chain provides a way of chaining multiple providers together
24// which will pick the first available using priority order of the
25// Providers in the list.
26//
27// If none of the Providers retrieve valid credentials Value, ChainProvider's
28// Retrieve() will return the no credentials value.
29//
30// If a Provider is found which returns valid credentials Value ChainProvider
31// will cache that Provider for all calls to IsExpired(), until Retrieve is
32// called again after IsExpired() is true.
33//
34// creds := credentials.NewChainCredentials(
35// []credentials.Provider{
36// &credentials.EnvAWSS3{},
37// &credentials.EnvMinio{},
38// })
39//
40// // Usage of ChainCredentials.
41// mc, err := minio.NewWithCredentials(endpoint, creds, secure, "us-east-1")
42// if err != nil {
43// log.Fatalln(err)
44// }
45type Chain struct {
46 Providers []Provider
47 curr Provider
48}
49
50// NewChainCredentials returns a pointer to a new Credentials object
51// wrapping a chain of providers.
52func NewChainCredentials(providers []Provider) *Credentials {
53 return New(&Chain{
54 Providers: append([]Provider{}, providers...),
55 })
56}
57
58// Retrieve returns the credentials value, returns no credentials(anonymous)
59// if no credentials provider returned any value.
60//
61// If a provider is found with credentials, it will be cached and any calls
62// to IsExpired() will return the expired state of the cached provider.
63func (c *Chain) Retrieve() (Value, error) {
64 for _, p := range c.Providers {
65 creds, _ := p.Retrieve()
66 // Always prioritize non-anonymous providers, if any.
67 if creds.AccessKeyID == "" && creds.SecretAccessKey == "" {
68 continue
69 }
70 c.curr = p
71 return creds, nil
72 }
73 // At this point we have exhausted all the providers and
74 // are left without any credentials return anonymous.
75 return Value{
76 SignerType: SignatureAnonymous,
77 }, nil
78}
79
80// IsExpired will returned the expired state of the currently cached provider
81// if there is one. If there is no current provider, true will be returned.
82func (c *Chain) IsExpired() bool {
83 if c.curr != nil {
84 return c.curr.IsExpired()
85 }
86
87 return true
88}