1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// Copyright 2017 Google LLC
//
// 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.
package internal
import (
"context"
"fmt"
"io/ioutil"
"golang.org/x/oauth2/google"
)
// Creds returns credential information obtained from DialSettings, or if none, then
// it returns default credential information.
func Creds(ctx context.Context, ds *DialSettings) (*google.DefaultCredentials, error) {
if ds.Credentials != nil {
return ds.Credentials, nil
}
if ds.CredentialsJSON != nil {
return google.CredentialsFromJSON(ctx, ds.CredentialsJSON, ds.Scopes...)
}
if ds.CredentialsFile != "" {
data, err := ioutil.ReadFile(ds.CredentialsFile)
if err != nil {
return nil, fmt.Errorf("cannot read credentials file: %v", err)
}
return google.CredentialsFromJSON(ctx, data, ds.Scopes...)
}
if ds.TokenSource != nil {
return &google.DefaultCredentials{TokenSource: ds.TokenSource}, nil
}
return google.FindDefaultCredentials(ctx, ds.Scopes...)
}
|
