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google: more nits

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Change-Id: I6b655c042e1758a49727909031847a86d092e303
This commit is contained in:
Patrick Jones
2020-12-17 15:44:00 -08:00
parent 80e2eea187
commit 9075f29749
2 changed files with 12 additions and 11 deletions
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17
google/internal/externalaccount/filecredsource.go
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@@ -14,33 +14,34 @@ import (
)
type fileCredentialSource struct {
File string
File string
Format format
}
func (cs fileCredentialSource) retrieveSubjectToken(c *Config) (string, error) {
func (cs fileCredentialSource) subjectToken() (string, error) {
tokenFile, err := os.Open(cs.File)
if err != nil {
return "", fmt.Errorf("oauth2/google: failed to open credential file %q\n", cs.File)
return "", fmt.Errorf("oauth2/google: failed to open credential file %q", cs.File)
}
defer tokenFile.Close()
tokenBytes, err := ioutil.ReadAll(tokenFile)
if err != nil {
return "", fmt.Errorf("oauth2/google: failed to read credential file; %q", err)
return "", fmt.Errorf("oauth2/google: failed to read credential file: %v", err)
}
tokenBytes = bytes.TrimSpace(tokenBytes)
var output string
switch c.CredentialSource.Format.Type {
switch cs.Format.Type {
case "json":
jsonData := make(map[string]interface{})
err = json.Unmarshal(tokenBytes, &jsonData)
if err != nil {
return "", fmt.Errorf("oauth2/google: failed to unmarshal subject token file; %q", err)
return "", fmt.Errorf("oauth2/google: failed to unmarshal subject token file: %v", err)
}
if val, ok := jsonData[c.CredentialSource.Format.SubjectTokenFieldName]; !ok {
if val, ok := jsonData[cs.Format.SubjectTokenFieldName]; !ok {
return "", errors.New("oauth2/google: provided subject_token_field_name not found in credentials")
} else {
token, ok := val.(string)
if ok {
if !ok {
return "", errors.New("oauth2/google: improperly formatted subject token")
}
output = token