func validateSelection(field *structs.Field, selection string) error {
selectionSet := strings.Split(selection, "|")
switch field.Kind() {
case reflect.Int:
i := field.Value().(int)
s := strconv.Itoa(i)
for _, selection := range selectionSet {
if s == selection {
return nil
}
}
return fmt.Errorf("validate: Field %s value %s, not in selection %s.", field.Name(), s, selection)
case reflect.String:
s := field.Value().(string)
for _, selection := range selectionSet {
if s == selection {
return nil
}
}
return fmt.Errorf("validate: Field %s value %s, not in selection %s.", field.Name(), s, selection)
default:
return nil
}
return nil
}
func parseValue(field *structs.Field, val string) (interface{}, error) {
switch field.Kind() {
case reflect.Int:
v, err := strconv.Atoi(val)
if err != nil {
return nil, err
}
return v, nil
case reflect.Float64:
v, err := strconv.ParseFloat(val, 64)
if err != nil {
return nil, err
}
return v, nil
case reflect.Bool:
v, err := strconv.ParseBool(val)
if err != nil {
return nil, err
}
return v, nil
default:
fieldVal := field.Value()
if _, casted := fieldVal.(bson.ObjectId); casted {
if bson.IsObjectIdHex(val) {
return bson.ObjectIdHex(val), nil
} else {
return nil, fmt.Errorf("should be bson.ObjectId hex")
}
}
if _, casted := (fieldVal).(time.Time); casted {
v := &time.Time{}
return v, v.UnmarshalText([]byte(val))
}
if convertable, casted := fieldVal.(Converter); casted {
converted, err := convertable.Convert(val)
if err != nil {
return nil, err
}
if enum, casted := fieldVal.(Enumer); casted {
enumValues := enum.Enum()
for _, eV := range enumValues {
if eV == converted {
return converted, nil
}
}
return nil, fmt.Errorf("should be one of %v", enumValues)
}
return converted, nil
}
return val, nil
}
}
func validateString(field *structs.Field, regex string) error {
switch field.Kind() {
case reflect.String:
i := field.Value().(string)
matched, err := regexp.MatchString(regex, i)
if err == nil && !matched {
return fmt.Errorf("validate: Field %s value %s, regex %s not matched.", field.Name(), i, regex)
}
}
return nil
}
func getBytes(f *structs.Field) ([]byte, error) {
var b *bytes.Buffer
switch f.Kind() {
case reflect.Slice:
if reflect.ValueOf(f.Value()).Type().Elem().Kind() == reflect.Uint8 {
// []byte
return (f.Value()).([]byte), nil
}
case reflect.String:
return []byte((f.Value()).(string)), nil
case reflect.Bool:
return boolconv.NewBool((f.Value()).(bool)).Bytes(), nil
case reflect.Int8, reflect.Uint8:
b = bytes.NewBuffer(make([]byte, 0, 2))
case reflect.Int16, reflect.Uint16:
b = bytes.NewBuffer(make([]byte, 0, binary.MaxVarintLen16))
case reflect.Int32, reflect.Uint32:
b = bytes.NewBuffer(make([]byte, 0, binary.MaxVarintLen32))
case reflect.Int64, reflect.Uint64, reflect.Int, reflect.Uint, reflect.Float32, reflect.Float64:
b = bytes.NewBuffer(make([]byte, 0, binary.MaxVarintLen64))
}
if b != nil {
i := f.Value()
if f.Kind() == reflect.Int {
i = int64(i.(int))
}
if f.Kind() == reflect.Uint {
i = uint64(i.(uint))
}
err := binary.Write(b, binary.BigEndian, i)
return b.Bytes(), err
}
return nil, fmt.Errorf("cloth: unsupported type. %v", f.Kind())
}
// fieldSet sets field value from the given string value. It converts the
// string value in a sane way and is usefulf or environment variables or flags
// which are by nature in string types.
func fieldSet(field *structs.Field, v string) error {
// TODO: add support for other types
switch field.Kind() {
case reflect.Bool:
val, err := strconv.ParseBool(v)
if err != nil {
return err
}
if err := field.Set(val); err != nil {
return err
}
case reflect.Int:
i, err := strconv.Atoi(v)
if err != nil {
return err
}
if err := field.Set(i); err != nil {
return err
}
case reflect.String:
field.Set(v)
case reflect.Slice:
// TODO add other typed slice support
if _, ok := field.Value().([]string); !ok {
return errors.New("can't set on non string slices")
}
if err := field.Set(strings.Split(v, ",")); err != nil {
return err
}
case reflect.Float64:
f, err := strconv.ParseFloat(v, 64)
if err != nil {
return err
}
if err := field.Set(f); err != nil {
return err
}
default:
return fmt.Errorf("multiconfig: not supported type: %s", field.Kind())
}
return nil
}
func validateLength(field *structs.Field, minlenStr string, maxlenStr string) error {
switch field.Kind() {
case reflect.String:
i := field.Value().(string)
l := len(i)
min, minErr := strconv.Atoi(minlenStr)
max, maxErr := strconv.Atoi(maxlenStr)
if (minErr == nil && l < min) || (maxErr == nil && l > max) {
return fmt.Errorf("validate: Field %s value %s, length limit: [%s, %s]", field.Name(), i, minlenStr, maxlenStr)
}
default:
return nil
}
return nil
}
func validateRange(field *structs.Field, minStr string, maxStr string) error {
switch field.Kind() {
case reflect.Int:
i := field.Value().(int)
min, minErr := strconv.Atoi(minStr)
max, maxErr := strconv.Atoi(maxStr)
if (minErr == nil && i < min) || (maxErr == nil && i > max) {
return fmt.Errorf("validate: Field %s value %d, want: [%s, %s]", field.Name(), i, minStr, maxStr)
}
case reflect.Float64:
i := field.Value().(float64)
min, minErr := strconv.ParseFloat(minStr, 64)
max, maxErr := strconv.ParseFloat(maxStr, 64)
if (minErr == nil && i < min) || (maxErr == nil && i > max) {
return fmt.Errorf("validate: Field %s value %f, want: [%s, %s]", field.Name(), i, minStr, maxStr)
}
case reflect.Int64:
switch field.Value().(type) {
case int64:
i := field.Value().(int64)
min, minErr := strconv.ParseInt(minStr, 10, 64)
max, maxErr := strconv.ParseInt(maxStr, 10, 64)
if (minErr == nil && i < min) || (maxErr == nil && i > max) {
return fmt.Errorf("validate: Field %s value %d, want: [%s, %s]", field.Name(), i, minStr, maxStr)
}
default:
return nil
}
default:
return nil
}
return nil
}
// fieldSet sets field value from the given string value. It converts the
// string value in a sane way and is usefulf or environment variables or flags
// which are by nature in string types.
func fieldSet(field *structs.Field, v string) error {
// TODO: add support for other types
switch field.Kind() {
case reflect.Bool:
val, err := strconv.ParseBool(v)
if err != nil {
return err
}
if err := field.Set(val); err != nil {
return err
}
case reflect.Int:
i, err := strconv.Atoi(v)
if err != nil {
return err
}
if field.RawValue.Type().Name() != "int" {
// We're probably dealing with an enum type
field.RawValue.SetInt(int64(i))
return nil
}
if err := field.Set(i); err != nil {
return err
}
case reflect.String:
if field.RawValue.Type().Name() != "string" {
// We're probably dealing with an enum type
field.RawValue.SetString(v)
return nil
}
if err := field.Set(v); err != nil {
return err
}
case reflect.Slice:
switch t := field.Value().(type) {
case []string:
if err := field.Set(strings.Split(v, ",")); err != nil {
return err
}
case []int:
var list []int
for _, in := range strings.Split(v, ",") {
i, err := strconv.Atoi(in)
if err != nil {
return err
}
list = append(list, i)
}
if err := field.Set(list); err != nil {
return err
}
default:
return fmt.Errorf("multiconfig: field '%s' of type slice is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
case reflect.Float64:
f, err := strconv.ParseFloat(v, 64)
if err != nil {
return err
}
if err := field.Set(f); err != nil {
return err
}
case reflect.Int64:
switch t := field.Value().(type) {
case time.Duration:
d, err := time.ParseDuration(v)
if err != nil {
return err
}
if err := field.Set(d); err != nil {
return err
}
case int64:
p, err := strconv.ParseInt(v, 10, 0)
if err != nil {
return err
}
if err := field.Set(p); err != nil {
return err
}
default:
return fmt.Errorf("multiconfig: field '%s' of type int64 is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
default:
return fmt.Errorf("multiconfig: field '%s' has unsupported type: %s", field.Name(), field.Kind())
}
return nil
}
// fieldSet sets field value from the given string value. It converts the
// string value in a sane way and is usefulf or environment variables or flags
// which are by nature in string types.
func fieldSet(field *structs.Field, v string) error {
switch field.Kind() {
case reflect.Bool:
val, err := strconv.ParseBool(v)
if err != nil {
return err
}
if err := field.Set(val); err != nil {
return err
}
case reflect.Int:
i, err := strconv.Atoi(v)
if err != nil {
return err
}
if err := field.Set(i); err != nil {
return err
}
case reflect.String:
if err := field.Set(v); err != nil {
return err
}
case reflect.Map:
switch t := field.Value().(type) {
case map[string]int:
si := make(map[string]int)
if err := json.Unmarshal([]byte(v), &si); err != nil {
return err
}
if err := field.Set(si); err != nil {
return err
}
case map[string]string:
ss := make(map[string]string)
if err := json.Unmarshal([]byte(v), &ss); err != nil {
return err
}
if err := field.Set(ss); err != nil {
return err
}
default:
return fmt.Errorf("config: field '%s' of type map is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
case reflect.Slice:
switch t := field.Value().(type) {
case []string:
if err := field.Set(strings.Split(v, ",")); err != nil {
return err
}
case []int:
var list []int
for _, in := range strings.Split(v, ",") {
i, err := strconv.Atoi(in)
if err != nil {
return err
}
list = append(list, i)
}
if err := field.Set(list); err != nil {
return err
}
case []int64:
var list []int64
for _, in := range strings.Split(v, ",") {
i, err := strconv.ParseInt(in, 10, 64)
if err != nil {
return err
}
list = append(list, i)
}
if err := field.Set(list); err != nil {
return err
}
case []float64:
var list []float64
for _, in := range strings.Split(v, ",") {
i, err := strconv.ParseFloat(in, 64)
if err != nil {
return err
}
list = append(list, i)
}
if err := field.Set(list); err != nil {
return err
}
default:
return fmt.Errorf("config: field '%s' of type slice is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
case reflect.Float64:
f, err := strconv.ParseFloat(v, 64)
if err != nil {
return err
}
if err := field.Set(f); err != nil {
return err
}
case reflect.Int64:
switch t := field.Value().(type) {
case time.Duration:
d, err := time.ParseDuration(v)
if err != nil {
return err
}
if err := field.Set(d); err != nil {
return err
}
case int64:
p, err := strconv.ParseInt(v, 10, 64)
if err != nil {
return err
}
if err := field.Set(p); err != nil {
return err
}
default:
return fmt.Errorf("config: field '%s' of type int64 is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
default:
return fmt.Errorf("config: field '%s' has unsupported type: %s", field.Name(), field.Kind())
}
return nil
}
// fieldSet sets field value from the given string value. It converts the
// string value in a sane way and is usefulf or environment variables or flags
// which are by nature in string types.
func fieldSet(field *structs.Field, v string) error {
switch f := field.Value().(type) {
case flag.Value:
if v := reflect.ValueOf(field.Value()); v.IsNil() {
typ := v.Type()
if typ.Kind() == reflect.Ptr {
typ = typ.Elem()
}
if err := field.Set(reflect.New(typ).Interface()); err != nil {
return err
}
f = field.Value().(flag.Value)
}
return f.Set(v)
}
// TODO: add support for other types
switch field.Kind() {
case reflect.Bool:
val, err := strconv.ParseBool(v)
if err != nil {
return err
}
if err := field.Set(val); err != nil {
return err
}
case reflect.Int:
i, err := strconv.Atoi(v)
if err != nil {
return err
}
if err := field.Set(i); err != nil {
return err
}
case reflect.String:
if err := field.Set(v); err != nil {
return err
}
case reflect.Slice:
switch t := field.Value().(type) {
case []string:
if err := field.Set(strings.Split(v, ",")); err != nil {
return err
}
case []int:
var list []int
for _, in := range strings.Split(v, ",") {
i, err := strconv.Atoi(in)
if err != nil {
return err
}
list = append(list, i)
}
if err := field.Set(list); err != nil {
return err
}
default:
return fmt.Errorf("multiconfig: field '%s' of type slice is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
case reflect.Float64:
f, err := strconv.ParseFloat(v, 64)
if err != nil {
return err
}
if err := field.Set(f); err != nil {
return err
}
case reflect.Int64:
switch t := field.Value().(type) {
case time.Duration:
d, err := time.ParseDuration(v)
if err != nil {
return err
}
if err := field.Set(d); err != nil {
return err
}
case int64:
p, err := strconv.ParseInt(v, 10, 0)
if err != nil {
return err
}
if err := field.Set(p); err != nil {
return err
}
default:
return fmt.Errorf("multiconfig: field '%s' of type int64 is unsupported: %s (%T)",
field.Name(), field.Kind(), t)
}
default:
return fmt.Errorf("multiconfig: field '%s' has unsupported type: %s", field.Name(), field.Kind())
}
return nil
}