// saveCurrentState saves the current running turtle apps.
func saveCurrentState() error {
// Create a new state value.
var s state
// Get all apps.
curApps := apps.Apps()
for _, app := range curApps {
// Skip if not running.
if !app.IsRunning() {
continue
}
// Add the app name to the running apps slice.
s.RunningApps = append(s.RunningApps, app.Name())
}
// Encode the state value to TOML.
buf := new(bytes.Buffer)
err := toml.NewEncoder(buf).Encode(&s)
if err != nil {
return fmt.Errorf("failed to encode turtle state value to toml: %v", err)
}
// Write the result to the app settings file.
err = ioutil.WriteFile(config.Config.StateFilePath(), buf.Bytes(), 0600)
if err != nil {
return fmt.Errorf("failed to save turtle state value: %v", err)
}
return nil
}
// handleList sends a list of all Apps.
func handleList(request *api.Request) (interface{}, error) {
// Get all apps.
curApps := apps.Apps()
// Create the response value.
res := api.ResponseList{
Apps: make([]api.ResponseListApp, len(curApps)),
}
// Add all the apps to the response value.
for i, app := range curApps {
// Get the turtlefile.
// Continue also on error.
var turtlefileName string
t, err := app.Turtlefile()
if err != nil {
turtlefileName = "ERROR In FILE"
} else {
turtlefileName = t.Name
}
res.Apps[i] = api.ResponseListApp{
Name: app.Name(),
Turtlefile: turtlefileName,
State: app.State(),
}
}
return res, nil
}
func removeOldBackups() error {
// Lock the mutex.
removeOldBackupsMutex.Lock()
defer removeOldBackupsMutex.Unlock()
var allErr string
addErr := func(err error) {
allErr += err.Error() + "\n"
}
// Create the expiration unix timestamp.
expire := time.Now().Unix() - config.Config.KeepBackupsDuration
// Get all apps.
curApps := apps.Apps()
for _, app := range curApps {
// Get all backups of the app.
backups, err := app.Backups()
if err != nil {
addErr(err)
continue
}
// Remove all old backups.
for _, b := range backups {
u, err := strconv.ParseInt(b, 10, 64)
if err != nil {
addErr(err)
continue
}
// Skip if this is not an old backup.
if (expire - u) <= 0 {
continue
}
log.Infof("Removing old backup '%s' of app '%s'.", b, app.Name())
// Remove the backup.
err = app.RemoveBackup(b)
if err != nil {
addErr(err)
continue
}
}
}
// Trim the all error messages string.
allErr = strings.TrimSpace(allErr)
// Return the error(s) if present.
if len(allErr) > 0 {
return fmt.Errorf(allErr)
}
return nil
}
// restoreState loads the turtle state file if present and
// restores the previous running apps.
func restoreState() error {
var s state
// Set the turtle state file path.
statePath := config.Config.StateFilePath()
// Skip if it does not exists.
e, err := utils.Exists(statePath)
if err != nil {
return err
} else if !e {
return nil
}
// Load and decode the file.
_, err = toml.DecodeFile(statePath, &s)
if err != nil {
return fmt.Errorf("failed to load turtle state file '%s': %v", statePath, err)
}
// Get all apps.
curApps := apps.Apps()
// Collect all errors during startup.
var allErr string
// Start the apps which where running during the last turtle daemon shutdown.
for _, rApp := range s.RunningApps {
for _, app := range curApps {
// Skip if this is not our searched app or if it is already running.
if rApp != app.Name() || app.IsRunning() {
continue
}
// Start the app.
err = app.Start()
if err != nil {
allErr += err.Error() + "\n"
}
}
}
// Trim the new linew at the end.
allErr = strings.TrimSpace(allErr)
// Return the error(s) if present.
if len(allErr) > 0 {
return fmt.Errorf(allErr)
}
return nil
}