diff options
Diffstat (limited to 'vendor/github.com/Azure/go-autorest/autorest/azure/persist.go')
-rw-r--r-- | vendor/github.com/Azure/go-autorest/autorest/azure/persist.go | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/github.com/Azure/go-autorest/autorest/azure/persist.go b/vendor/github.com/Azure/go-autorest/autorest/azure/persist.go new file mode 100644 index 000000000..d5cf62ddc --- /dev/null +++ b/vendor/github.com/Azure/go-autorest/autorest/azure/persist.go @@ -0,0 +1,59 @@ +package azure + +import ( + "encoding/json" + "fmt" + "io/ioutil" + "os" + "path/filepath" +) + +// LoadToken restores a Token object from a file located at 'path'. +func LoadToken(path string) (*Token, error) { + file, err := os.Open(path) + if err != nil { + return nil, fmt.Errorf("failed to open file (%s) while loading token: %v", path, err) + } + defer file.Close() + + var token Token + + dec := json.NewDecoder(file) + if err = dec.Decode(&token); err != nil { + return nil, fmt.Errorf("failed to decode contents of file (%s) into Token representation: %v", path, err) + } + return &token, nil +} + +// SaveToken persists an oauth token at the given location on disk. +// It moves the new file into place so it can safely be used to replace an existing file +// that maybe accessed by multiple processes. +func SaveToken(path string, mode os.FileMode, token Token) error { + dir := filepath.Dir(path) + err := os.MkdirAll(dir, os.ModePerm) + if err != nil { + return fmt.Errorf("failed to create directory (%s) to store token in: %v", dir, err) + } + + newFile, err := ioutil.TempFile(dir, "token") + if err != nil { + return fmt.Errorf("failed to create the temp file to write the token: %v", err) + } + tempPath := newFile.Name() + + if err := json.NewEncoder(newFile).Encode(token); err != nil { + return fmt.Errorf("failed to encode token to file (%s) while saving token: %v", tempPath, err) + } + if err := newFile.Close(); err != nil { + return fmt.Errorf("failed to close temp file %s: %v", tempPath, err) + } + + // Atomic replace to avoid multi-writer file corruptions + if err := os.Rename(tempPath, path); err != nil { + return fmt.Errorf("failed to move temporary token to desired output location. src=%s dst=%s: %v", tempPath, path, err) + } + if err := os.Chmod(path, mode); err != nil { + return fmt.Errorf("failed to chmod the token file %s: %v", path, err) + } + return nil +} |