func (o *opts) run() error { return retry.Retry(uint(o.retry), time.Duration(o.interval*float64(time.Second)), func() error { cmd := exec.Command(o.cmd[0], o.cmd[1:]...) cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr cmd.Stdin = os.Stdin err := cmd.Run() if !wrapcommander.IsInvoked(err) { fmt.Fprintln(os.Stderr, err) } return err }) }
// prepareHost collects specs of the host and sends them to Mackerel server. // A unique host-id is returned by the server if one is not specified. func prepareHost(conf *config.Config, api *mackerel.API) (*mackerel.Host, error) { // XXX this configuration should be moved to under spec/linux os.Setenv("PATH", "/sbin:/usr/sbin:/bin:/usr/bin:"+os.Getenv("PATH")) os.Setenv("LANG", "C") // prevent changing outputs of some command, e.g. ifconfig. doRetry := func(f func() error) { retry.Retry(retryNum, retryInterval, f) } filterErrorForRetry := func(err error) error { if err != nil { logger.Warningf("%s", err.Error()) } if apiErr, ok := err.(*mackerel.Error); ok && apiErr.IsClientError() { // don't retry when client error (APIKey error etc.) occurred return nil } return err } hostname, meta, interfaces, lastErr := collectHostSpecs() if lastErr != nil { return nil, fmt.Errorf("error while collecting host specs: %s", lastErr.Error()) } var result *mackerel.Host if hostID, err := conf.LoadHostID(); err != nil { // create logger.Debugf("Registering new host on mackerel...") doRetry(func() error { hostID, lastErr = api.CreateHost(hostname, meta, interfaces, conf.Roles, conf.DisplayName) return filterErrorForRetry(lastErr) }) if lastErr != nil { return nil, fmt.Errorf("Failed to register this host: %s", lastErr.Error()) } doRetry(func() error { result, lastErr = api.FindHost(hostID) return filterErrorForRetry(lastErr) }) if lastErr != nil { return nil, fmt.Errorf("Failed to find this host on mackerel: %s", lastErr.Error()) } } else { // check the hostID is valid or not doRetry(func() error { result, lastErr = api.FindHost(hostID) return filterErrorForRetry(lastErr) }) if lastErr != nil { if fsStorage, ok := conf.HostIDStorage.(*config.FileSystemHostIDStorage); ok { return nil, fmt.Errorf("Failed to find this host on mackerel (You may want to delete file \"%s\" to register this host to an another organization): %s", fsStorage.HostIDFile(), lastErr.Error()) } return nil, fmt.Errorf("Failed to find this host on mackerel: %s", lastErr.Error()) } } hostSt := conf.HostStatus.OnStart if hostSt != "" && hostSt != result.Status { doRetry(func() error { lastErr = api.UpdateHostStatus(result.ID, hostSt) return filterErrorForRetry(lastErr) }) if lastErr != nil { return nil, fmt.Errorf("Failed to set default host status: %s, %s", hostSt, lastErr.Error()) } } lastErr = conf.SaveHostID(result.ID) if lastErr != nil { return nil, fmt.Errorf("Failed to save host ID: %s", lastErr.Error()) } return result, nil }