// Set a new mount value
func (m *MountOpt) Set(value string) error {
csvReader := csv.NewReader(strings.NewReader(value))
fields, err := csvReader.Read()
if err != nil {
return err
}
mount := swarm.Mount{}
volumeOptions := func() *swarm.VolumeOptions {
if mount.VolumeOptions == nil {
mount.VolumeOptions = &swarm.VolumeOptions{
Labels: make(map[string]string),
}
}
if mount.VolumeOptions.DriverConfig == nil {
mount.VolumeOptions.DriverConfig = &swarm.Driver{}
}
return mount.VolumeOptions
}
bindOptions := func() *swarm.BindOptions {
if mount.BindOptions == nil {
mount.BindOptions = new(swarm.BindOptions)
}
return mount.BindOptions
}
setValueOnMap := func(target map[string]string, value string) {
parts := strings.SplitN(value, "=", 2)
if len(parts) == 1 {
target[value] = ""
} else {
target[parts[0]] = parts[1]
}
}
for _, field := range fields {
parts := strings.SplitN(field, "=", 2)
if len(parts) == 1 && strings.ToLower(parts[0]) == "writable" {
mount.Writable = true
continue
}
if len(parts) != 2 {
return fmt.Errorf("invalid field '%s' must be a key=value pair", field)
}
key, value := parts[0], parts[1]
switch strings.ToLower(key) {
case "type":
mount.Type = swarm.MountType(strings.ToUpper(value))
case "source":
mount.Source = value
case "target":
mount.Target = value
case "writable":
mount.Writable, err = strconv.ParseBool(value)
if err != nil {
return fmt.Errorf("invalid value for writable: %s", value)
}
case "bind-propagation":
bindOptions().Propagation = swarm.MountPropagation(strings.ToUpper(value))
case "volume-populate":
volumeOptions().Populate, err = strconv.ParseBool(value)
if err != nil {
return fmt.Errorf("invalid value for populate: %s", value)
}
case "volume-label":
setValueOnMap(volumeOptions().Labels, value)
case "volume-driver":
volumeOptions().DriverConfig.Name = value
case "volume-driver-opt":
if volumeOptions().DriverConfig.Options == nil {
volumeOptions().DriverConfig.Options = make(map[string]string)
}
setValueOnMap(volumeOptions().DriverConfig.Options, value)
default:
return fmt.Errorf("unexpected key '%s' in '%s'", key, field)
}
}
if mount.Type == "" {
return fmt.Errorf("type is required")
}
if mount.Target == "" {
return fmt.Errorf("target is required")
}
m.values = append(m.values, mount)
return nil
}
