func renderRangeProxyTemplates()

in pkg/config/client.go [367:414]
37 lines of code
11 McCabe index (conditional complexity)

func renderRangeProxyTemplates(f *ini.File, section *ini.Section) error {
	// Validation
	localPortStr := section.Key("local_port").String()
	remotePortStr := section.Key("remote_port").String()
	if localPortStr == "" || remotePortStr == "" {
		return fmt.Errorf("local_port or remote_port is empty")
	}

	localPorts, err := util.ParseRangeNumbers(localPortStr)
	if err != nil {
		return err
	}

	remotePorts, err := util.ParseRangeNumbers(remotePortStr)
	if err != nil {
		return err
	}

	if len(localPorts) != len(remotePorts) {
		return fmt.Errorf("local ports number should be same with remote ports number")
	}

	if len(localPorts) == 0 {
		return fmt.Errorf("local_port and remote_port is necessary")
	}

	// Templates
	prefix := strings.TrimSpace(strings.TrimPrefix(section.Name(), "range:"))

	for i := range localPorts {
		tmpname := fmt.Sprintf("%s_%d", prefix, i)

		tmpsection, err := f.NewSection(tmpname)
		if err != nil {
			return err
		}

		copySection(section, tmpsection)
		if _, err := tmpsection.NewKey("local_port", fmt.Sprintf("%d", localPorts[i])); err != nil {
			return fmt.Errorf("local_port new key in section error: %v", err)
		}
		if _, err := tmpsection.NewKey("remote_port", fmt.Sprintf("%d", remotePorts[i])); err != nil {
			return fmt.Errorf("remote_port new key in section error: %v", err)
		}
	}

	return nil
}