// ValidateFormat validates a string against a standard format.
// It returns nil if the string conforms to the format, an error otherwise.
// The format specification follows the json schema draft 4 validation extension.
// see http://json-schema.org/latest/json-schema-validation.html#anchor105
// Supported formats are:
//
// - "date-time": RFC3339 date time value
// - "email": RFC5322 email address
// - "hostname": RFC1035 Internet host name
// - "ipv4", "ipv6", "ip": RFC2673 and RFC2373 IP address values
// - "uri": RFC3986 URI value
// - "mac": IEEE 802 MAC-48, EUI-48 or EUI-64 MAC address value
// - "cidr": RFC4632 and RFC4291 CIDR notation IP address value
// - "regexp": Regular expression syntax accepted by RE2
func ValidateFormat(f Format, val string) error {
var err error
switch f {
case FormatDateTime:
_, err = time.Parse(time.RFC3339, val)
case FormatUUID:
_, err = uuid.FromString(val)
case FormatEmail:
_, err = mail.ParseAddress(val)
case FormatHostname:
if !hostnameRegex.MatchString(val) {
err = fmt.Errorf("hostname value '%s' does not match %s",
val, hostnameRegex.String())
}
case FormatIPv4, FormatIPv6, FormatIP:
ip := net.ParseIP(val)
if ip == nil {
err = fmt.Errorf("\"%s\" is an invalid %s value", val, f)
}
if f == FormatIPv4 {
if !ipv4Regex.MatchString(val) {
err = fmt.Errorf("\"%s\" is an invalid ipv4 value", val)
}
}
if f == FormatIPv6 {
if ipv4Regex.MatchString(val) {
err = fmt.Errorf("\"%s\" is an invalid ipv6 value", val)
}
}
case FormatURI:
_, err = url.ParseRequestURI(val)
case FormatMAC:
_, err = net.ParseMAC(val)
case FormatCIDR:
_, _, err = net.ParseCIDR(val)
case FormatRegexp:
_, err = regexp.Compile(val)
default:
return fmt.Errorf("unknown format %#v", f)
}
if err != nil {
go IncrCounter([]string{"goa", "validation", "error", string(f)}, 1.0)
return fmt.Errorf("invalid %s value, %s", f, err)
}
return nil
}
import (
"bytes"
"encoding/json"
"fmt"
"github.com/goadesign/goa/uuid"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("JsonEncoding", func() {
Describe("handle goa/uuid/UUID", func() {
name := "Test"
id, _ := uuid.FromString("c0586f01-87b5-462b-a673-3b2dcf619091")
type Payload struct {
ID uuid.UUID
Name string
}
It("encode", func() {
data := Payload{
id,
name,
}
var b bytes.Buffer
encoder := json.NewEncoder(&b)
encoder.Encode(data)