// sync compares the staged and dest config files and attempts to sync them // if they differ. sync will run a config check command if set before // overwriting the target config file. Finally, sync will run a reload command // if set to have the application or service pick up the changes. // It returns an error if any. func (t *TemplateResource) sync() error { staged := t.StageFile.Name() defer os.Remove(staged) log.Debug("Comparing candidate config to " + t.Dest) ok, err := sameConfig(staged, t.Dest) if err != nil { log.Error(err.Error()) } if config.Noop() { log.Warning("Noop mode enabled " + t.Dest + " will not be modified") return nil } if !ok { log.Info("Target config " + t.Dest + " out of sync") if t.CheckCmd != "" { if err := t.check(); err != nil { return errors.New("Config check failed: " + err.Error()) } } log.Debug("Overwriting target config " + t.Dest) if err := os.Rename(staged, t.Dest); err != nil { return err } if t.ReloadCmd != "" { if err := t.reload(); err != nil { return err } } log.Info("Target config " + t.Dest + " has been updated") } else { log.Info("Target config " + t.Dest + " in sync") } return nil }
// sync compares the staged and dest config files and attempts to sync them // if they differ. sync will run a config check command if set before // overwriting the target config file. Finally, sync will run a reload command // if set to have the application or service pick up the changes. // It returns an error if any. func (t *TemplateResource) sync() error { staged := t.StageFile.Name() defer os.Remove(staged) log.Debug("Comparing candidate config to " + t.Dest) ok, err := sameConfig(staged, t.Dest) if err != nil { log.Error(err.Error()) } if config.Noop() { log.Warning("Noop mode enabled " + t.Dest + " will not be modified") return nil } if !ok { log.Info("Target config " + t.Dest + " out of sync") if t.CheckCmd != "" { if err := t.check(); err != nil { return errors.New("Config check failed: " + err.Error()) } } log.Debug("Overwriting target config " + t.Dest) err := os.Rename(staged, t.Dest) if err != nil { if strings.Contains(err.Error(), "device or resource busy") { log.Debug("Rename failed - target is likely a mount. Trying to write instead") // try to open the file and write to it var contents []byte var rerr error contents, rerr = ioutil.ReadFile(staged) if rerr != nil { return rerr } err := ioutil.WriteFile(t.Dest, contents, t.FileMode) // make sure owner and group match the temp file, in case the file was created with WriteFile os.Chown(t.Dest, t.Uid, t.Gid) if err != nil { return err } } else { return err } } if t.ReloadCmd != "" { if err := t.reload(); err != nil { return err } } log.Info("Target config " + t.Dest + " has been updated") } else { log.Info("Target config " + t.Dest + " in sync") } return nil }