/
validator.go
200 lines (179 loc) · 4.69 KB
/
validator.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
package controller
import (
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
"github.com/go-playground/locales/en"
"github.com/go-playground/locales/zh"
ut "github.com/go-playground/universal-translator"
validator "github.com/go-playground/validator/v10"
cron "github.com/robfig/cron/v3"
)
func Validate(i interface{}) error {
if defaultCustomValidator == nil {
return nil
}
cv := defaultCustomValidator
err := cv.validate.Struct(i)
if err == nil {
return nil
}
// errs can only be validator.ValidationErrors
//nolint:forcetypeassert
errs := err.(validator.ValidationErrors)
errMsgs := make([]string, 0, len(errs))
for _, err := range errs {
errMsgs = append(errMsgs, err.Translate(cv.enTrans))
}
if len(errMsgs) > 0 {
return fmt.Errorf(strings.Join(errMsgs, "; "))
}
return nil
}
var defaultCustomValidator *CustomValidator
var (
ValidNameTag = "name"
ValidPortTag = "port"
ValidCronTag = "cron"
)
func init() {
cv := NewCustomValidator()
cv.validate.RegisterTagNameFunc(func(fld reflect.StructField) string {
name := strings.SplitN(fld.Tag.Get("json"), ",", 2)[0]
if name == "-" {
return ""
}
return name
})
cv.validate.SetTagName("valid")
// register custom validator
_ = cv.validate.RegisterValidation(ValidNameTag, ValidateName)
_ = cv.validate.RegisterValidation(ValidPortTag, ValidatePort)
_ = cv.validate.RegisterValidation(ValidCronTag, ValidateCron)
type registerTranslationArgs struct {
tag string
enText string
zhText string
params []string
}
argsMap := []registerTranslationArgs{
{
tag: "required",
enText: "{0} is required",
zhText: "{0}不能为空",
},
{
tag: "oneof",
enText: "{0} must be one of [{1}]",
zhText: "{0}必须是[{1}]其中之一",
},
{
tag: "email",
enText: "{0} is invalid email addr",
zhText: "{0}是无效的邮箱地址",
},
{
tag: "len=0|email",
enText: "{0} must be valid email addr or empty string",
zhText: "{0}必须是有效的邮箱地址或空字符串",
},
{
tag: ValidNameTag,
enText: "{0} must match regexp `{1}`",
zhText: "{0}必须匹配正则`{1}`",
params: []string{ValidateNameRegexpPattern},
},
{
tag: ValidPortTag,
enText: "{0} is invalid port",
zhText: "{0}是无效的端口",
},
{
tag: ValidCronTag,
enText: "{0} is invalid cron",
zhText: "{0}是无效的Cron表达式",
},
}
// register custom validator error message
for _, args := range argsMap {
err := cv.RegisterTranslation(args.tag, args.enText, args.enText, args.params...)
if err != nil {
panic(err)
}
}
defaultCustomValidator = cv
}
type CustomValidator struct {
validate *validator.Validate
enTrans ut.Translator
zhTrans ut.Translator
}
func NewCustomValidator() *CustomValidator {
en := en.New()
zh := zh.New()
uni := ut.New(en, zh)
enTrans, _ := uni.GetTranslator(en.Locale())
zhTrans, _ := uni.GetTranslator(zh.Locale())
cv := &CustomValidator{
validate: validator.New(),
enTrans: enTrans,
zhTrans: zhTrans,
}
return cv
}
func (cv *CustomValidator) RegisterTranslation(tag, enText, zhText string, params ...string) error {
err := cv.validate.RegisterTranslation(tag, cv.enTrans, func(ut ut.Translator) error {
return ut.Add(tag, enText, true)
}, func(ut ut.Translator, fe validator.FieldError) string {
tParams := []string{fe.Namespace()}
if len(params) > 0 {
tParams = append(tParams, params...)
}
tParams = append(tParams, fe.Param())
t, _ := ut.T(tag, tParams...)
return t
})
if err != nil {
return err
}
err = cv.validate.RegisterTranslation(tag, cv.zhTrans, func(ut ut.Translator) error {
return ut.Add(tag, zhText, true)
}, func(ut ut.Translator, fe validator.FieldError) string {
tParams := []string{fe.Namespace()}
if len(params) > 0 {
tParams = append(tParams, params...)
}
tParams = append(tParams, fe.Param())
t, _ := ut.T(tag, tParams...)
return t
})
return err
}
var ValidateNameRegexpPattern = `^[a-zA-Z][a-zA-Z0-9\_\-]{0,59}$`
// ValidateName implements validator.Func
func ValidateName(fl validator.FieldLevel) bool {
return validateName(fl.Field().String())
}
func validateName(name string) bool {
match, _ := regexp.MatchString(ValidateNameRegexpPattern, name)
return match
}
// ValidatePort implements validator.Func
func ValidatePort(fl validator.FieldLevel) bool {
return validatePort(fl.Field().String())
}
func validatePort(port string) bool {
// Port must be a iny <= 65535.
portNum, err := strconv.ParseInt(port, 10, 32)
if err != nil || portNum > 65535 || portNum < 1 {
return false
}
return true
}
// ValidateCron implements validator.Func
func ValidateCron(fl validator.FieldLevel) bool {
_, err := cron.ParseStandard(fl.Field().String())
return err == nil
}