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Update heketi dependencies to sha@558b29266ce0a873991ecfb3edc41a668a998514.

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Fixes #
https://github.com/kubernetes/kubernetes/issues/70802

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
This commit is contained in:
Humble Chirammal
2018-11-09 21:08:56 +05:30
parent ea74b0b59d
commit 92fa290ead
55 changed files with 3392 additions and 975 deletions
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
.DS_Store

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language: go
go:
- 1.8
- 1.9
- tip
install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- go list -f '{{range .Imports}}{{.}} {{end}}' ./... | xargs go get -v
- go list -f '{{range .TestImports}}{{.}} {{end}}' ./... | xargs go get -v
script:
- go test -v -covermode=count -coverprofile=coverage.out
- $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci

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load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = [
"date.go",
"error.go",
"in.go",
"length.go",
"match.go",
"minmax.go",
"multipleof.go",
"not_in.go",
"not_nil.go",
"required.go",
"string.go",
"struct.go",
"util.go",
"validation.go",
],
importmap = "k8s.io/kubernetes/vendor/github.com/go-ozzo/ozzo-validation",
importpath = "github.com/go-ozzo/ozzo-validation",
visibility = ["//visibility:public"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//vendor/github.com/go-ozzo/ozzo-validation/is:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

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The MIT License (MIT)
Copyright (c) 2016, Qiang Xue
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# ozzo-validation
[![GoDoc](https://godoc.org/github.com/go-ozzo/ozzo-validation?status.png)](http://godoc.org/github.com/go-ozzo/ozzo-validation)
[![Build Status](https://travis-ci.org/go-ozzo/ozzo-validation.svg?branch=master)](https://travis-ci.org/go-ozzo/ozzo-validation)
[![Coverage Status](https://coveralls.io/repos/github/go-ozzo/ozzo-validation/badge.svg?branch=master)](https://coveralls.io/github/go-ozzo/ozzo-validation?branch=master)
[![Go Report](https://goreportcard.com/badge/github.com/go-ozzo/ozzo-validation)](https://goreportcard.com/report/github.com/go-ozzo/ozzo-validation)
## Description
ozzo-validation is a Go package that provides configurable and extensible data validation capabilities.
It has the following features:
* use normal programming constructs rather than error-prone struct tags to specify how data should be validated.
* can validate data of different types, e.g., structs, strings, byte slices, slices, maps, arrays.
* can validate custom data types as long as they implement the `Validatable` interface.
* can validate data types that implement the `sql.Valuer` interface (e.g. `sql.NullString`).
* customizable and well-formatted validation errors.
* provide a rich set of validation rules right out of box.
* extremely easy to create and use custom validation rules.
## Requirements
Go 1.8 or above.
## Getting Started
The ozzo-validation package mainly includes a set of validation rules and two validation methods. You use
validation rules to describe how a value should be considered valid, and you call either `validation.Validate()`
or `validation.ValidateStruct()` to validate the value.
### Installation
Run the following command to install the package:
```
go get github.com/go-ozzo/ozzo-validation
go get github.com/go-ozzo/ozzo-validation/is
```
### Validating a Simple Value
For a simple value, such as a string or an integer, you may use `validation.Validate()` to validate it. For example,
```go
package main
import (
"fmt"
"github.com/go-ozzo/ozzo-validation"
"github.com/go-ozzo/ozzo-validation/is"
)
func main() {
data := "example"
err := validation.Validate(data,
validation.Required, // not empty
validation.Length(5, 100), // length between 5 and 100
is.URL, // is a valid URL
)
fmt.Println(err)
// Output:
// must be a valid URL
}
```
The method `validation.Validate()` will run through the rules in the order that they are listed. If a rule fails
the validation, the method will return the corresponding error and skip the rest of the rules. The method will
return nil if the value passes all validation rules.
### Validating a Struct
For a struct value, you usually want to check if its fields are valid. For example, in a RESTful application, you
may unmarshal the request payload into a struct and then validate the struct fields. If one or multiple fields
are invalid, you may want to get an error describing which fields are invalid. You can use `validation.ValidateStruct()`
to achieve this purpose. A single struct can have rules for multiple fields, and a field can be associated with multiple
rules. For example,
```go
package main
import (
"fmt"
"regexp"
"github.com/go-ozzo/ozzo-validation"
"github.com/go-ozzo/ozzo-validation/is"
)
type Address struct {
Street string
City string
State string
Zip string
}
func (a Address) Validate() error {
return validation.ValidateStruct(&a,
// Street cannot be empty, and the length must between 5 and 50
validation.Field(&a.Street, validation.Required, validation.Length(5, 50)),
// City cannot be empty, and the length must between 5 and 50
validation.Field(&a.City, validation.Required, validation.Length(5, 50)),
// State cannot be empty, and must be a string consisting of two letters in upper case
validation.Field(&a.State, validation.Required, validation.Match(regexp.MustCompile("^[A-Z]{2}$"))),
// State cannot be empty, and must be a string consisting of five digits
validation.Field(&a.Zip, validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))),
)
}
func main() {
a := Address{
Street: "123",
City: "Unknown",
State: "Virginia",
Zip: "12345",
}
err := a.Validate()
fmt.Println(err)
// Output:
// Street: the length must be between 5 and 50; State: must be in a valid format.
}
```
Note that when calling `validation.ValidateStruct` to validate a struct, you should pass to the method a pointer
to the struct instead of the struct itself. Similarly, when calling `validation.Field` to specify the rules
for a struct field, you should use a pointer to the struct field.
When the struct validation is performed, the fields are validated in the order they are specified in `ValidateStruct`.
And when each field is validated, its rules are also evaluated in the order they are associated with the field.
If a rule fails, an error is recorded for that field, and the validation will continue with the next field.
### Validation Errors
The `validation.ValidateStruct` method returns validation errors found in struct fields in terms of `validation.Errors`
which is a map of fields and their corresponding errors. Nil is returned if validation passes.
By default, `validation.Errors` uses the struct tags named `json` to determine what names should be used to
represent the invalid fields. The type also implements the `json.Marshaler` interface so that it can be marshaled
into a proper JSON object. For example,
```go
type Address struct {
Street string `json:"street"`
City string `json:"city"`
State string `json:"state"`
Zip string `json:"zip"`
}
// ...perform validation here...
err := a.Validate()
b, _ := json.Marshal(err)
fmt.Println(string(b))
// Output:
// {"street":"the length must be between 5 and 50","state":"must be in a valid format"}
```
You may modify `validation.ErrorTag` to use a different struct tag name.
If you do not like the magic that `ValidateStruct` determines error keys based on struct field names or corresponding
tag values, you may use the following alternative approach:
```go
c := Customer{
Name: "Qiang Xue",
Email: "q",
Address: Address{
State: "Virginia",
},
}
err := validation.Errors{
"name": validation.Validate(c.Name, validation.Required, validation.Length(5, 20)),
"email": validation.Validate(c.Name, validation.Required, is.Email),
"zip": validation.Validate(c.Address.Zip, validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))),
}.Filter()
fmt.Println(err)
// Output:
// email: must be a valid email address; zip: cannot be blank.
```
In the above example, we build a `validation.Errors` by a list of names and the corresponding validation results.
At the end we call `Errors.Filter()` to remove from `Errors` all nils which correspond to those successful validation
results. The method will return nil if `Errors` is empty.
The above approach is very flexible as it allows you to freely build up your validation error structure. You can use
it to validate both struct and non-struct values. Compared to using `ValidateStruct` to validate a struct,
it has the drawback that you have to redundantly specify the error keys while `ValidateStruct` can automatically
find them out.
### Internal Errors
Internal errors are different from validation errors in that internal errors are caused by malfunctioning code (e.g.
a validator making a remote call to validate some data when the remote service is down) rather
than the data being validated. When an internal error happens during data validation, you may allow the user to resubmit
the same data to perform validation again, hoping the program resumes functioning. On the other hand, if data validation
fails due to data error, the user should generally not resubmit the same data again.
To differentiate internal errors from validation errors, when an internal error occurs in a validator, wrap it
into `validation.InternalError` by calling `validation.NewInternalError()`. The user of the validator can then check
if a returned error is an internal error or not. For example,
```go
if err := a.Validate(); err != nil {
if e, ok := err.(validation.InternalError); ok {
// an internal error happened
fmt.Println(e.InternalError())
}
}
```
## Validatable Types
A type is validatable if it implements the `validation.Validatable` interface.
When `validation.Validate` is used to validate a validatable value, if it does not find any error with the
given validation rules, it will further call the value's `Validate()` method.
Similarly, when `validation.ValidateStruct` is validating a struct field whose type is validatable, it will call
the field's `Validate` method after it passes the listed rules.
In the following example, the `Address` field of `Customer` is validatable because `Address` implements
`validation.Validatable`. Therefore, when validating a `Customer` struct with `validation.ValidateStruct`,
validation will "dive" into the `Address` field.
```go
type Customer struct {
Name string
Gender string
Email string
Address Address
}
func (c Customer) Validate() error {
return validation.ValidateStruct(&c,
// Name cannot be empty, and the length must be between 5 and 20.
validation.Field(&c.Name, validation.Required, validation.Length(5, 20)),
// Gender is optional, and should be either "Female" or "Male".
validation.Field(&c.Gender, validation.In("Female", "Male")),
// Email cannot be empty and should be in a valid email format.
validation.Field(&c.Email, validation.Required, is.Email),
// Validate Address using its own validation rules
validation.Field(&c.Address),
)
}
c := Customer{
Name: "Qiang Xue",
Email: "q",
Address: Address{
Street: "123 Main Street",
City: "Unknown",
State: "Virginia",
Zip: "12345",
},
}
err := c.Validate()
fmt.Println(err)
// Output:
// Address: (State: must be in a valid format.); Email: must be a valid email address.
```
Sometimes, you may want to skip the invocation of a type's `Validate` method. To do so, simply associate
a `validation.Skip` rule with the value being validated.
### Maps/Slices/Arrays of Validatables
When validating a map, slice, or array, whose element type implements the `validation.Validatable` interface,
the `validation.Validate` method will call the `Validate` method of every non-nil element.
The validation errors of the elements will be returned as `validation.Errors` which maps the keys of the
invalid elements to their corresponding validation errors. For example,
```go
addresses := []Address{
Address{State: "MD", Zip: "12345"},
Address{Street: "123 Main St", City: "Vienna", State: "VA", Zip: "12345"},
Address{City: "Unknown", State: "NC", Zip: "123"},
}
err := validation.Validate(addresses)
fmt.Println(err)
// Output:
// 0: (City: cannot be blank; Street: cannot be blank.); 2: (Street: cannot be blank; Zip: must be in a valid format.).
```
When using `validation.ValidateStruct` to validate a struct, the above validation procedure also applies to those struct
fields which are map/slices/arrays of validatables.
### Pointers
When a value being validated is a pointer, most validation rules will validate the actual value pointed to by the pointer.
If the pointer is nil, these rules will skip the validation.
An exception is the `validation.Required` and `validation.NotNil` rules. When a pointer is nil, they
will report a validation error.
### Types Implementing `sql.Valuer`
If a data type implements the `sql.Valuer` interface (e.g. `sql.NullString`), the built-in validation rules will handle
it properly. In particular, when a rule is validating such data, it will call the `Value()` method and validate
the returned value instead.
### Required vs. Not Nil
When validating input values, there are two different scenarios about checking if input values are provided or not.
In the first scenario, an input value is considered missing if it is not entered or it is entered as a zero value
(e.g. an empty string, a zero integer). You can use the `validation.Required` rule in this case.
In the second scenario, an input value is considered missing only if it is not entered. A pointer field is usually
used in this case so that you can detect if a value is entered or not by checking if the pointer is nil or not.
You can use the `validation.NotNil` rule to ensure a value is entered (even if it is a zero value).
### Embedded Structs
The `validation.ValidateStruct` method will properly validate a struct that contains embedded structs. In particular,
the fields of an embedded struct are treated as if they belong directly to the containing struct. For example,
```go
type Employee struct {
Name string
}
func ()
type Manager struct {
Employee
Level int
}
m := Manager{}
err := validation.ValidateStruct(&m,
validation.Field(&m.Name, validation.Required),
validation.Field(&m.Level, validation.Required),
)
fmt.Println(err)
// Output:
// Level: cannot be blank; Name: cannot be blank.
```
In the above code, we use `&m.Name` to specify the validation of the `Name` field of the embedded struct `Employee`.
And the validation error uses `Name` as the key for the error associated with the `Name` field as if `Name` a field
directly belonging to `Manager`.
If `Employee` implements the `validation.Validatable` interface, we can also use the following code to validate
`Manager`, which generates the same validation result:
```go
func (e Employee) Validate() error {
return validation.ValidateStruct(&e,
validation.Field(&e.Name, validation.Required),
)
}
err := validation.ValidateStruct(&m,
validation.Field(&m.Employee),
validation.Field(&m.Level, validation.Required),
)
fmt.Println(err)
// Output:
// Level: cannot be blank; Name: cannot be blank.
```
## Built-in Validation Rules
The following rules are provided in the `validation` package:
* `In(...interface{})`: checks if a value can be found in the given list of values.
* `Length(min, max int)`: checks if the length of a value is within the specified range.
This rule should only be used for validating strings, slices, maps, and arrays.
* `RuneLength(min, max int)`: checks if the length of a string is within the specified range.
This rule is similar as `Length` except that when the value being validated is a string, it checks
its rune length instead of byte length.
* `Min(min interface{})` and `Max(max interface{})`: checks if a value is within the specified range.
These two rules should only be used for validating int, uint, float and time.Time types.
* `Match(*regexp.Regexp)`: checks if a value matches the specified regular expression.
This rule should only be used for strings and byte slices.
* `Date(layout string)`: checks if a string value is a date whose format is specified by the layout.
By calling `Min()` and/or `Max()`, you can check additionally if the date is within the specified range.
* `Required`: checks if a value is not empty (neither nil nor zero).
* `NotNil`: checks if a pointer value is not nil. Non-pointer values are considered valid.
* `NilOrNotEmpty`: checks if a value is a nil pointer or a non-empty value. This differs from `Required` in that it treats a nil pointer as valid.
* `Skip`: this is a special rule used to indicate that all rules following it should be skipped (including the nested ones).
* `MultipleOf`: checks if the value is a multiple of the specified range.
The `is` sub-package provides a list of commonly used string validation rules that can be used to check if the format
of a value satisfies certain requirements. Note that these rules only handle strings and byte slices and if a string
or byte slice is empty, it is considered valid. You may use a `Required` rule to ensure a value is not empty.
Below is the whole list of the rules provided by the `is` package:
* `Email`: validates if a string is an email or not
* `URL`: validates if a string is a valid URL
* `RequestURL`: validates if a string is a valid request URL
* `RequestURI`: validates if a string is a valid request URI
* `Alpha`: validates if a string contains English letters only (a-zA-Z)
* `Digit`: validates if a string contains digits only (0-9)
* `Alphanumeric`: validates if a string contains English letters and digits only (a-zA-Z0-9)
* `UTFLetter`: validates if a string contains unicode letters only
* `UTFDigit`: validates if a string contains unicode decimal digits only
* `UTFLetterNumeric`: validates if a string contains unicode letters and numbers only
* `UTFNumeric`: validates if a string contains unicode number characters (category N) only
* `LowerCase`: validates if a string contains lower case unicode letters only
* `UpperCase`: validates if a string contains upper case unicode letters only
* `Hexadecimal`: validates if a string is a valid hexadecimal number
* `HexColor`: validates if a string is a valid hexadecimal color code
* `RGBColor`: validates if a string is a valid RGB color in the form of rgb(R, G, B)
* `Int`: validates if a string is a valid integer number
* `Float`: validates if a string is a floating point number
* `UUIDv3`: validates if a string is a valid version 3 UUID
* `UUIDv4`: validates if a string is a valid version 4 UUID
* `UUIDv5`: validates if a string is a valid version 5 UUID
* `UUID`: validates if a string is a valid UUID
* `CreditCard`: validates if a string is a valid credit card number
* `ISBN10`: validates if a string is an ISBN version 10
* `ISBN13`: validates if a string is an ISBN version 13
* `ISBN`: validates if a string is an ISBN (either version 10 or 13)
* `JSON`: validates if a string is in valid JSON format
* `ASCII`: validates if a string contains ASCII characters only
* `PrintableASCII`: validates if a string contains printable ASCII characters only
* `Multibyte`: validates if a string contains multibyte characters
* `FullWidth`: validates if a string contains full-width characters
* `HalfWidth`: validates if a string contains half-width characters
* `VariableWidth`: validates if a string contains both full-width and half-width characters
* `Base64`: validates if a string is encoded in Base64
* `DataURI`: validates if a string is a valid base64-encoded data URI
* `E164`: validates if a string is a valid E164 phone number (+19251232233)
* `CountryCode2`: validates if a string is a valid ISO3166 Alpha 2 country code
* `CountryCode3`: validates if a string is a valid ISO3166 Alpha 3 country code
* `DialString`: validates if a string is a valid dial string that can be passed to Dial()
* `MAC`: validates if a string is a MAC address
* `IP`: validates if a string is a valid IP address (either version 4 or 6)
* `IPv4`: validates if a string is a valid version 4 IP address
* `IPv6`: validates if a string is a valid version 6 IP address
* `Subdomain`: validates if a string is valid subdomain
* `Domain`: validates if a string is valid domain
* `DNSName`: validates if a string is valid DNS name
* `Host`: validates if a string is a valid IP (both v4 and v6) or a valid DNS name
* `Port`: validates if a string is a valid port number
* `MongoID`: validates if a string is a valid Mongo ID
* `Latitude`: validates if a string is a valid latitude
* `Longitude`: validates if a string is a valid longitude
* `SSN`: validates if a string is a social security number (SSN)
* `Semver`: validates if a string is a valid semantic version
### Customizing Error Messages
All built-in validation rules allow you to customize error messages. To do so, simply call the `Error()` method
of the rules. For example,
```go
data := "2123"
err := validation.Validate(data,
validation.Required.Error("is required"),
validation.Match(regexp.MustCompile("^[0-9]{5}$")).Error("must be a string with five digits"),
)
fmt.Println(err)
// Output:
// must be a string with five digits
```
## Creating Custom Rules
Creating a custom rule is as simple as implementing the `validation.Rule` interface. The interface contains a single
method as shown below, which should validate the value and return the validation error, if any:
```go
// Validate validates a value and returns an error if validation fails.
Validate(value interface{}) error
```
If you already have a function with the same signature as shown above, you can call `validation.By()` to turn
it into a validation rule. For example,
```go
func checkAbc(value interface{}) error {
s, _ := value.(string)
if s != "abc" {
return errors.New("must be abc")
}
return nil
}
err := validation.Validate("xyz", validation.By(checkAbc))
fmt.Println(err)
// Output: must be abc
```
### Rule Groups
When a combination of several rules are used in multiple places, you may use the following trick to create a
rule group so that your code is more maintainable.
```go
var NameRule = []validation.Rule{
validation.Required,
validation.Length(5, 20),
}
type User struct {
FirstName string
LastName string
}
func (u User) Validate() error {
return validation.ValidateStruct(&u,
validation.Field(&u.FirstName, NameRule...),
validation.Field(&u.LastName, NameRule...),
)
}
```
In the above example, we create a rule group `NameRule` which consists of two validation rules. We then use this rule
group to validate both `FirstName` and `LastName`.
## Credits
The `is` sub-package wraps the excellent validators provided by the [govalidator](https://github.com/asaskevich/govalidator) package.

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# Upgrade Instructions
## Upgrade from 2.x to 3.x
* Instead of using `StructRules` to define struct validation rules, use `ValidateStruct()` to declare and perform
struct validation. The following code snippet shows how to modify your code:
```go
// 2.x usage
err := validation.StructRules{}.
Add("Street", validation.Required, validation.Length(5, 50)).
Add("City", validation.Required, validation.Length(5, 50)).
Add("State", validation.Required, validation.Match(regexp.MustCompile("^[A-Z]{2}$"))).
Add("Zip", validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))).
Validate(a)
// 3.x usage
err := validation.ValidateStruct(&a,
validation.Field(&a.Street, validation.Required, validation.Length(5, 50)),
validation.Field(&a.City, validation.Required, validation.Length(5, 50)),
validation.Field(&a.State, validation.Required, validation.Match(regexp.MustCompile("^[A-Z]{2}$"))),
validation.Field(&a.Zip, validation.Required, validation.Match(regexp.MustCompile("^[0-9]{5}$"))),
)
```
* Instead of using `Rules` to declare a rule list and use it to validate a value, call `Validate()` with the rules directly.
```go
data := "example"
// 2.x usage
rules := validation.Rules{
validation.Required,
validation.Length(5, 100),
is.URL,
}
err := rules.Validate(data)
// 3.x usage
err := validation.Validate(data,
validation.Required,
validation.Length(5, 100),
is.URL,
)
```
* The default struct tags used for determining error keys is changed from `validation` to `json`. You may modify
`validation.ErrorTag` to change it back.

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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
"time"
)
type DateRule struct {
layout string
min, max time.Time
message string
rangeMessage string
}
// Date returns a validation rule that checks if a string value is in a format that can be parsed into a date.
// The format of the date should be specified as the layout parameter which accepts the same value as that for time.Parse.
// For example,
// validation.Date(time.ANSIC)
// validation.Date("02 Jan 06 15:04 MST")
// validation.Date("2006-01-02")
//
// By calling Min() and/or Max(), you can let the Date rule to check if a parsed date value is within
// the specified date range.
//
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
func Date(layout string) *DateRule {
return &DateRule{
layout: layout,
message: "must be a valid date",
rangeMessage: "the data is out of range",
}
}
// Error sets the error message that is used when the value being validated is not a valid date.
func (r *DateRule) Error(message string) *DateRule {
r.message = message
return r
}
// RangeError sets the error message that is used when the value being validated is out of the specified Min/Max date range.
func (r *DateRule) RangeError(message string) *DateRule {
r.rangeMessage = message
return r
}
// Min sets the minimum date range. A zero value means skipping the minimum range validation.
func (r *DateRule) Min(min time.Time) *DateRule {
r.min = min
return r
}
// Max sets the maximum date range. A zero value means skipping the maximum range validation.
func (r *DateRule) Max(max time.Time) *DateRule {
r.max = max
return r
}
// Validate checks if the given value is a valid date.
func (r *DateRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
str, err := EnsureString(value)
if err != nil {
return err
}
date, err := time.Parse(r.layout, str)
if err != nil {
return errors.New(r.message)
}
if !r.min.IsZero() && r.min.After(date) || !r.max.IsZero() && date.After(r.max) {
return errors.New(r.rangeMessage)
}
return nil
}

89
vendor/github.com/go-ozzo/ozzo-validation/error.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"encoding/json"
"fmt"
"sort"
)
type (
// Errors represents the validation errors that are indexed by struct field names, map or slice keys.
Errors map[string]error
// InternalError represents an error that should NOT be treated as a validation error.
InternalError interface {
error
InternalError() error
}
internalError struct {
error
}
)
// NewInternalError wraps a given error into an InternalError.
func NewInternalError(err error) InternalError {
return &internalError{error: err}
}
// InternalError returns the actual error that it wraps around.
func (e *internalError) InternalError() error {
return e.error
}
// Error returns the error string of Errors.
func (es Errors) Error() string {
if len(es) == 0 {
return ""
}
keys := []string{}
for key := range es {
keys = append(keys, key)
}
sort.Strings(keys)
s := ""
for i, key := range keys {
if i > 0 {
s += "; "
}
if errs, ok := es[key].(Errors); ok {
s += fmt.Sprintf("%v: (%v)", key, errs)
} else {
s += fmt.Sprintf("%v: %v", key, es[key].Error())
}
}
return s + "."
}
// MarshalJSON converts the Errors into a valid JSON.
func (es Errors) MarshalJSON() ([]byte, error) {
errs := map[string]interface{}{}
for key, err := range es {
if ms, ok := err.(json.Marshaler); ok {
errs[key] = ms
} else {
errs[key] = err.Error()
}
}
return json.Marshal(errs)
}
// Filter removes all nils from Errors and returns back the updated Errors as an error.
// If the length of Errors becomes 0, it will return nil.
func (es Errors) Filter() error {
for key, value := range es {
if value == nil {
delete(es, key)
}
}
if len(es) == 0 {
return nil
}
return es
}

43
vendor/github.com/go-ozzo/ozzo-validation/in.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import "errors"
// In returns a validation rule that checks if a value can be found in the given list of values.
// Note that the value being checked and the possible range of values must be of the same type.
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
func In(values ...interface{}) *InRule {
return &InRule{
elements: values,
message: "must be a valid value",
}
}
type InRule struct {
elements []interface{}
message string
}
// Validate checks if the given value is valid or not.
func (r *InRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
for _, e := range r.elements {
if e == value {
return nil
}
}
return errors.New(r.message)
}
// Error sets the error message for the rule.
func (r *InRule) Error(message string) *InRule {
r.message = message
return r
}

27
vendor/github.com/go-ozzo/ozzo-validation/is/BUILD generated vendored Normal file
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load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["rules.go"],
importmap = "k8s.io/kubernetes/vendor/github.com/go-ozzo/ozzo-validation/is",
importpath = "github.com/go-ozzo/ozzo-validation/is",
visibility = ["//visibility:public"],
deps = [
"//vendor/github.com/asaskevich/govalidator:go_default_library",
"//vendor/github.com/go-ozzo/ozzo-validation:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

171
vendor/github.com/go-ozzo/ozzo-validation/is/rules.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// Package is provides a list of commonly used string validation rules.
package is
import (
"regexp"
"unicode"
"github.com/asaskevich/govalidator"
"github.com/go-ozzo/ozzo-validation"
)
var (
// Email validates if a string is an email or not.
Email = validation.NewStringRule(govalidator.IsEmail, "must be a valid email address")
// URL validates if a string is a valid URL
URL = validation.NewStringRule(govalidator.IsURL, "must be a valid URL")
// RequestURL validates if a string is a valid request URL
RequestURL = validation.NewStringRule(govalidator.IsRequestURL, "must be a valid request URL")
// RequestURI validates if a string is a valid request URI
RequestURI = validation.NewStringRule(govalidator.IsRequestURI, "must be a valid request URI")
// Alpha validates if a string contains English letters only (a-zA-Z)
Alpha = validation.NewStringRule(govalidator.IsAlpha, "must contain English letters only")
// Digit validates if a string contains digits only (0-9)
Digit = validation.NewStringRule(isDigit, "must contain digits only")
// Alphanumeric validates if a string contains English letters and digits only (a-zA-Z0-9)
Alphanumeric = validation.NewStringRule(govalidator.IsAlphanumeric, "must contain English letters and digits only")
// UTFLetter validates if a string contains unicode letters only
UTFLetter = validation.NewStringRule(govalidator.IsUTFLetter, "must contain unicode letter characters only")
// UTFDigit validates if a string contains unicode decimal digits only
UTFDigit = validation.NewStringRule(govalidator.IsUTFDigit, "must contain unicode decimal digits only")
// UTFLetterNumeric validates if a string contains unicode letters and numbers only
UTFLetterNumeric = validation.NewStringRule(govalidator.IsUTFLetterNumeric, "must contain unicode letters and numbers only")
// UTFNumeric validates if a string contains unicode number characters (category N) only
UTFNumeric = validation.NewStringRule(isUTFNumeric, "must contain unicode number characters only")
// LowerCase validates if a string contains lower case unicode letters only
LowerCase = validation.NewStringRule(govalidator.IsLowerCase, "must be in lower case")
// UpperCase validates if a string contains upper case unicode letters only
UpperCase = validation.NewStringRule(govalidator.IsUpperCase, "must be in upper case")
// Hexadecimal validates if a string is a valid hexadecimal number
Hexadecimal = validation.NewStringRule(govalidator.IsHexadecimal, "must be a valid hexadecimal number")
// HexColor validates if a string is a valid hexadecimal color code
HexColor = validation.NewStringRule(govalidator.IsHexcolor, "must be a valid hexadecimal color code")
// RGBColor validates if a string is a valid RGB color in the form of rgb(R, G, B)
RGBColor = validation.NewStringRule(govalidator.IsRGBcolor, "must be a valid RGB color code")
// Int validates if a string is a valid integer number
Int = validation.NewStringRule(govalidator.IsInt, "must be an integer number")
// Float validates if a string is a floating point number
Float = validation.NewStringRule(govalidator.IsFloat, "must be a floating point number")
// UUIDv3 validates if a string is a valid version 3 UUID
UUIDv3 = validation.NewStringRule(govalidator.IsUUIDv3, "must be a valid UUID v3")
// UUIDv4 validates if a string is a valid version 4 UUID
UUIDv4 = validation.NewStringRule(govalidator.IsUUIDv4, "must be a valid UUID v4")
// UUIDv5 validates if a string is a valid version 5 UUID
UUIDv5 = validation.NewStringRule(govalidator.IsUUIDv5, "must be a valid UUID v5")
// UUID validates if a string is a valid UUID
UUID = validation.NewStringRule(govalidator.IsUUID, "must be a valid UUID")
// CreditCard validates if a string is a valid credit card number
CreditCard = validation.NewStringRule(govalidator.IsCreditCard, "must be a valid credit card number")
// ISBN10 validates if a string is an ISBN version 10
ISBN10 = validation.NewStringRule(govalidator.IsISBN10, "must be a valid ISBN-10")
// ISBN13 validates if a string is an ISBN version 13
ISBN13 = validation.NewStringRule(govalidator.IsISBN13, "must be a valid ISBN-13")
// ISBN validates if a string is an ISBN (either version 10 or 13)
ISBN = validation.NewStringRule(isISBN, "must be a valid ISBN")
// JSON validates if a string is in valid JSON format
JSON = validation.NewStringRule(govalidator.IsJSON, "must be in valid JSON format")
// ASCII validates if a string contains ASCII characters only
ASCII = validation.NewStringRule(govalidator.IsASCII, "must contain ASCII characters only")
// PrintableASCII validates if a string contains printable ASCII characters only
PrintableASCII = validation.NewStringRule(govalidator.IsPrintableASCII, "must contain printable ASCII characters only")
// Multibyte validates if a string contains multibyte characters
Multibyte = validation.NewStringRule(govalidator.IsMultibyte, "must contain multibyte characters")
// FullWidth validates if a string contains full-width characters
FullWidth = validation.NewStringRule(govalidator.IsFullWidth, "must contain full-width characters")
// HalfWidth validates if a string contains half-width characters
HalfWidth = validation.NewStringRule(govalidator.IsHalfWidth, "must contain half-width characters")
// VariableWidth validates if a string contains both full-width and half-width characters
VariableWidth = validation.NewStringRule(govalidator.IsVariableWidth, "must contain both full-width and half-width characters")
// Base64 validates if a string is encoded in Base64
Base64 = validation.NewStringRule(govalidator.IsBase64, "must be encoded in Base64")
// DataURI validates if a string is a valid base64-encoded data URI
DataURI = validation.NewStringRule(govalidator.IsDataURI, "must be a Base64-encoded data URI")
// E164 validates if a string is a valid ISO3166 Alpha 2 country code
E164 = validation.NewStringRule(isE164Number, "must be a valid E164 number")
// CountryCode2 validates if a string is a valid ISO3166 Alpha 2 country code
CountryCode2 = validation.NewStringRule(govalidator.IsISO3166Alpha2, "must be a valid two-letter country code")
// CountryCode3 validates if a string is a valid ISO3166 Alpha 3 country code
CountryCode3 = validation.NewStringRule(govalidator.IsISO3166Alpha3, "must be a valid three-letter country code")
// DialString validates if a string is a valid dial string that can be passed to Dial()
DialString = validation.NewStringRule(govalidator.IsDialString, "must be a valid dial string")
// MAC validates if a string is a MAC address
MAC = validation.NewStringRule(govalidator.IsMAC, "must be a valid MAC address")
// IP validates if a string is a valid IP address (either version 4 or 6)
IP = validation.NewStringRule(govalidator.IsIP, "must be a valid IP address")
// IPv4 validates if a string is a valid version 4 IP address
IPv4 = validation.NewStringRule(govalidator.IsIPv4, "must be a valid IPv4 address")
// IPv6 validates if a string is a valid version 6 IP address
IPv6 = validation.NewStringRule(govalidator.IsIPv6, "must be a valid IPv6 address")
// Subdomain validates if a string is valid subdomain
Subdomain = validation.NewStringRule(isSubdomain, "must be a valid subdomain")
// Domain validates if a string is valid domain
Domain = validation.NewStringRule(isDomain, "must be a valid domain")
// DNSName validates if a string is valid DNS name
DNSName = validation.NewStringRule(govalidator.IsDNSName, "must be a valid DNS name")
// Host validates if a string is a valid IP (both v4 and v6) or a valid DNS name
Host = validation.NewStringRule(govalidator.IsHost, "must be a valid IP address or DNS name")
// Port validates if a string is a valid port number
Port = validation.NewStringRule(govalidator.IsPort, "must be a valid port number")
// MongoID validates if a string is a valid Mongo ID
MongoID = validation.NewStringRule(govalidator.IsMongoID, "must be a valid hex-encoded MongoDB ObjectId")
// Latitude validates if a string is a valid latitude
Latitude = validation.NewStringRule(govalidator.IsLatitude, "must be a valid latitude")
// Longitude validates if a string is a valid longitude
Longitude = validation.NewStringRule(govalidator.IsLongitude, "must be a valid longitude")
// SSN validates if a string is a social security number (SSN)
SSN = validation.NewStringRule(govalidator.IsSSN, "must be a valid social security number")
// Semver validates if a string is a valid semantic version
Semver = validation.NewStringRule(govalidator.IsSemver, "must be a valid semantic version")
)
var (
reDigit = regexp.MustCompile("^[0-9]+$")
// Subdomain regex source: https://stackoverflow.com/a/7933253
reSubdomain = regexp.MustCompile(`^[A-Za-z0-9](?:[A-Za-z0-9\-]{0,61}[A-Za-z0-9])?$`)
)
func isISBN(value string) bool {
return govalidator.IsISBN(value, 10) || govalidator.IsISBN(value, 13)
}
func isDigit(value string) bool {
return reDigit.MatchString(value)
}
func isE164Number(value string) bool {
// E164 regex source: https://stackoverflow.com/a/23299989
reE164 := regexp.MustCompile(`^\+?[1-9]\d{1,14}$`)
return reE164.MatchString(value)
}
func isSubdomain(value string) bool {
// Subdomain regex source: https://stackoverflow.com/a/7933253
reSubdomain := regexp.MustCompile(`^[A-Za-z0-9](?:[A-Za-z0-9\-]{0,61}[A-Za-z0-9])?$`)
return reSubdomain.MatchString(value)
}
func isDomain(value string) bool {
if len(value) > 255 {
return false
}
// Domain regex source: https://stackoverflow.com/a/7933253
// Slightly modified: Removed 255 max length validation since Go regex does not
// support lookarounds. More info: https://stackoverflow.com/a/38935027
reDomain := regexp.MustCompile(`^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+(?:[a-z]{1,63}| xn--[a-z0-9]{1,59})$`)
return reDomain.MatchString(value)
}
func isUTFNumeric(value string) bool {
for _, c := range value {
if unicode.IsNumber(c) == false {
return false
}
}
return true
}

81
vendor/github.com/go-ozzo/ozzo-validation/length.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
"fmt"
"unicode/utf8"
)
// Length returns a validation rule that checks if a value's length is within the specified range.
// If max is 0, it means there is no upper bound for the length.
// This rule should only be used for validating strings, slices, maps, and arrays.
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
func Length(min, max int) *LengthRule {
message := "the value must be empty"
if min == 0 && max > 0 {
message = fmt.Sprintf("the length must be no more than %v", max)
} else if min > 0 && max == 0 {
message = fmt.Sprintf("the length must be no less than %v", min)
} else if min > 0 && max > 0 {
if min == max {
message = fmt.Sprintf("the length must be exactly %v", min)
} else {
message = fmt.Sprintf("the length must be between %v and %v", min, max)
}
}
return &LengthRule{
min: min,
max: max,
message: message,
}
}
// RuneLength returns a validation rule that checks if a string's rune length is within the specified range.
// If max is 0, it means there is no upper bound for the length.
// This rule should only be used for validating strings, slices, maps, and arrays.
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
// If the value being validated is not a string, the rule works the same as Length.
func RuneLength(min, max int) *LengthRule {
r := Length(min, max)
r.rune = true
return r
}
type LengthRule struct {
min, max int
message string
rune bool
}
// Validate checks if the given value is valid or not.
func (v *LengthRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
var (
l int
err error
)
if s, ok := value.(string); ok && v.rune {
l = utf8.RuneCountInString(s)
} else if l, err = LengthOfValue(value); err != nil {
return err
}
if v.min > 0 && l < v.min || v.max > 0 && l > v.max {
return errors.New(v.message)
}
return nil
}
// Error sets the error message for the rule.
func (v *LengthRule) Error(message string) *LengthRule {
v.message = message
return v
}

47
vendor/github.com/go-ozzo/ozzo-validation/match.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
"regexp"
)
// Match returns a validation rule that checks if a value matches the specified regular expression.
// This rule should only be used for validating strings and byte slices, or a validation error will be reported.
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
func Match(re *regexp.Regexp) *MatchRule {
return &MatchRule{
re: re,
message: "must be in a valid format",
}
}
type MatchRule struct {
re *regexp.Regexp
message string
}
// Validate checks if the given value is valid or not.
func (v *MatchRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil {
return nil
}
isString, str, isBytes, bs := StringOrBytes(value)
if isString && (str == "" || v.re.MatchString(str)) {
return nil
} else if isBytes && (len(bs) == 0 || v.re.Match(bs)) {
return nil
}
return errors.New(v.message)
}
// Error sets the error message for the rule.
func (v *MatchRule) Error(message string) *MatchRule {
v.message = message
return v
}

177
vendor/github.com/go-ozzo/ozzo-validation/minmax.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
"fmt"
"reflect"
"time"
)
type ThresholdRule struct {
threshold interface{}
operator int
message string
}
const (
greaterThan = iota
greaterEqualThan
lessThan
lessEqualThan
)
// Min is a validation rule that checks if a value is greater or equal than the specified value.
// By calling Exclusive, the rule will check if the value is strictly greater than the specified value.
// Note that the value being checked and the threshold value must be of the same type.
// Only int, uint, float and time.Time types are supported.
// An empty value is considered valid. Please use the Required rule to make sure a value is not empty.
func Min(min interface{}) *ThresholdRule {
return &ThresholdRule{
threshold: min,
operator: greaterEqualThan,
message: fmt.Sprintf("must be no less than %v", min),
}
}
// Max is a validation rule that checks if a value is less or equal than the specified value.
// By calling Exclusive, the rule will check if the value is strictly less than the specified value.
// Note that the value being checked and the threshold value must be of the same type.
// Only int, uint, float and time.Time types are supported.
// An empty value is considered valid. Please use the Required rule to make sure a value is not empty.
func Max(max interface{}) *ThresholdRule {
return &ThresholdRule{
threshold: max,
operator: lessEqualThan,
message: fmt.Sprintf("must be no greater than %v", max),
}
}
// Exclusive sets the comparison to exclude the boundary value.
func (r *ThresholdRule) Exclusive() *ThresholdRule {
if r.operator == greaterEqualThan {
r.operator = greaterThan
r.message = fmt.Sprintf("must be greater than %v", r.threshold)
} else if r.operator == lessEqualThan {
r.operator = lessThan
r.message = fmt.Sprintf("must be less than %v", r.threshold)
}
return r
}
// Validate checks if the given value is valid or not.
func (r *ThresholdRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
rv := reflect.ValueOf(r.threshold)
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
v, err := ToInt(value)
if err != nil {
return err
}
if r.compareInt(rv.Int(), v) {
return nil
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
v, err := ToUint(value)
if err != nil {
return err
}
if r.compareUint(rv.Uint(), v) {
return nil
}
case reflect.Float32, reflect.Float64:
v, err := ToFloat(value)
if err != nil {
return err
}
if r.compareFloat(rv.Float(), v) {
return nil
}
case reflect.Struct:
t, ok := r.threshold.(time.Time)
if !ok {
return fmt.Errorf("type not supported: %v", rv.Type())
}
v, ok := value.(time.Time)
if !ok {
return fmt.Errorf("cannot convert %v to time.Time", reflect.TypeOf(value))
}
if v.IsZero() || r.compareTime(t, v) {
return nil
}
default:
return fmt.Errorf("type not supported: %v", rv.Type())
}
return errors.New(r.message)
}
// Error sets the error message for the rule.
func (r *ThresholdRule) Error(message string) *ThresholdRule {
r.message = message
return r
}
func (r *ThresholdRule) compareInt(threshold, value int64) bool {
switch r.operator {
case greaterThan:
return value > threshold
case greaterEqualThan:
return value >= threshold
case lessThan:
return value < threshold
default:
return value <= threshold
}
}
func (r *ThresholdRule) compareUint(threshold, value uint64) bool {
switch r.operator {
case greaterThan:
return value > threshold
case greaterEqualThan:
return value >= threshold
case lessThan:
return value < threshold
default:
return value <= threshold
}
}
func (r *ThresholdRule) compareFloat(threshold, value float64) bool {
switch r.operator {
case greaterThan:
return value > threshold
case greaterEqualThan:
return value >= threshold
case lessThan:
return value < threshold
default:
return value <= threshold
}
}
func (r *ThresholdRule) compareTime(threshold, value time.Time) bool {
switch r.operator {
case greaterThan:
return value.After(threshold)
case greaterEqualThan:
return value.After(threshold) || value.Equal(threshold)
case lessThan:
return value.Before(threshold)
default:
return value.Before(threshold) || value.Equal(threshold)
}
}

55
vendor/github.com/go-ozzo/ozzo-validation/multipleof.go generated vendored Normal file
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package validation
import (
"errors"
"fmt"
"reflect"
)
func MultipleOf(threshold interface{}) *multipleOfRule {
return &multipleOfRule{
threshold,
fmt.Sprintf("must be multiple of %v", threshold),
}
}
type multipleOfRule struct {
threshold interface{}
message string
}
// Error sets the error message for the rule.
func (r *multipleOfRule) Error(message string) *multipleOfRule {
r.message = message
return r
}
func (r *multipleOfRule) Validate(value interface{}) error {
rv := reflect.ValueOf(r.threshold)
switch rv.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
v, err := ToInt(value)
if err != nil {
return err
}
if v%rv.Int() == 0 {
return nil
}
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
v, err := ToUint(value)
if err != nil {
return err
}
if v%rv.Uint() == 0 {
return nil
}
default:
return fmt.Errorf("type not supported: %v", rv.Type())
}
return errors.New(r.message)
}

45
vendor/github.com/go-ozzo/ozzo-validation/not_in.go generated vendored Normal file
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// Copyright 2018 Qiang Xue, Google LLC. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
)
// NotIn returns a validation rule that checks if a value os absent from, the given list of values.
// Note that the value being checked and the possible range of values must be of the same type.
// An empty value is considered valid. Use the Required rule to make sure a value is not empty.
func NotIn(values ...interface{}) *NotInRule {
return &NotInRule{
elements: values,
message: "must not be in list",
}
}
type NotInRule struct {
elements []interface{}
message string
}
// Validate checks if the given value is valid or not.
func (r *NotInRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
for _, e := range r.elements {
if e == value {
return errors.New(r.message)
}
}
return nil
}
// Error sets the error message for the rule.
func (r *NotInRule) Error(message string) *NotInRule {
r.message = message
return r
}

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vendor/github.com/go-ozzo/ozzo-validation/not_nil.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import "errors"
// NotNil is a validation rule that checks if a value is not nil.
// NotNil only handles types including interface, pointer, slice, and map.
// All other types are considered valid.
var NotNil = &notNilRule{message: "is required"}
type notNilRule struct {
message string
}
// Validate checks if the given value is valid or not.
func (r *notNilRule) Validate(value interface{}) error {
_, isNil := Indirect(value)
if isNil {
return errors.New(r.message)
}
return nil
}
// Error sets the error message for the rule.
func (r *notNilRule) Error(message string) *notNilRule {
return &notNilRule{
message: message,
}
}

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vendor/github.com/go-ozzo/ozzo-validation/required.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import "errors"
// Required is a validation rule that checks if a value is not empty.
// A value is considered not empty if
// - integer, float: not zero
// - bool: true
// - string, array, slice, map: len() > 0
// - interface, pointer: not nil and the referenced value is not empty
// - any other types
var Required = &requiredRule{message: "cannot be blank", skipNil: false}
// NilOrNotEmpty checks if a value is a nil pointer or a value that is not empty.
// NilOrNotEmpty differs from Required in that it treats a nil pointer as valid.
var NilOrNotEmpty = &requiredRule{message: "cannot be blank", skipNil: true}
type requiredRule struct {
message string
skipNil bool
}
// Validate checks if the given value is valid or not.
func (v *requiredRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if v.skipNil && !isNil && IsEmpty(value) || !v.skipNil && (isNil || IsEmpty(value)) {
return errors.New(v.message)
}
return nil
}
// Error sets the error message for the rule.
func (v *requiredRule) Error(message string) *requiredRule {
return &requiredRule{
message: message,
skipNil: v.skipNil,
}
}

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vendor/github.com/go-ozzo/ozzo-validation/string.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import "errors"
type stringValidator func(string) bool
// StringRule is a rule that checks a string variable using a specified stringValidator.
type StringRule struct {
validate stringValidator
message string
}
// NewStringRule creates a new validation rule using a function that takes a string value and returns a bool.
// The rule returned will use the function to check if a given string or byte slice is valid or not.
// An empty value is considered to be valid. Please use the Required rule to make sure a value is not empty.
func NewStringRule(validator stringValidator, message string) *StringRule {
return &StringRule{
validate: validator,
message: message,
}
}
// Error sets the error message for the rule.
func (v *StringRule) Error(message string) *StringRule {
return NewStringRule(v.validate, message)
}
// Validate checks if the given value is valid or not.
func (v *StringRule) Validate(value interface{}) error {
value, isNil := Indirect(value)
if isNil || IsEmpty(value) {
return nil
}
str, err := EnsureString(value)
if err != nil {
return err
}
if v.validate(str) {
return nil
}
return errors.New(v.message)
}

154
vendor/github.com/go-ozzo/ozzo-validation/struct.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"errors"
"fmt"
"reflect"
"strings"
)
var (
// ErrStructPointer is the error that a struct being validated is not specified as a pointer.
ErrStructPointer = errors.New("only a pointer to a struct can be validated")
)
type (
// ErrFieldPointer is the error that a field is not specified as a pointer.
ErrFieldPointer int
// ErrFieldNotFound is the error that a field cannot be found in the struct.
ErrFieldNotFound int
// FieldRules represents a rule set associated with a struct field.
FieldRules struct {
fieldPtr interface{}
rules []Rule
}
)
// Error returns the error string of ErrFieldPointer.
func (e ErrFieldPointer) Error() string {
return fmt.Sprintf("field #%v must be specified as a pointer", int(e))
}
// Error returns the error string of ErrFieldNotFound.
func (e ErrFieldNotFound) Error() string {
return fmt.Sprintf("field #%v cannot be found in the struct", int(e))
}
// ValidateStruct validates a struct by checking the specified struct fields against the corresponding validation rules.
// Note that the struct being validated must be specified as a pointer to it. If the pointer is nil, it is considered valid.
// Use Field() to specify struct fields that need to be validated. Each Field() call specifies a single field which
// should be specified as a pointer to the field. A field can be associated with multiple rules.
// For example,
//
// value := struct {
// Name string
// Value string
// }{"name", "demo"}
// err := validation.ValidateStruct(&value,
// validation.Field(&a.Name, validation.Required),
// validation.Field(&a.Value, validation.Required, validation.Length(5, 10)),
// )
// fmt.Println(err)
// // Value: the length must be between 5 and 10.
//
// An error will be returned if validation fails.
func ValidateStruct(structPtr interface{}, fields ...*FieldRules) error {
value := reflect.ValueOf(structPtr)
if value.Kind() != reflect.Ptr || !value.IsNil() && value.Elem().Kind() != reflect.Struct {
// must be a pointer to a struct
return NewInternalError(ErrStructPointer)
}
if value.IsNil() {
// treat a nil struct pointer as valid
return nil
}
value = value.Elem()
errs := Errors{}
for i, fr := range fields {
fv := reflect.ValueOf(fr.fieldPtr)
if fv.Kind() != reflect.Ptr {
return NewInternalError(ErrFieldPointer(i))
}
ft := findStructField(value, fv)
if ft == nil {
return NewInternalError(ErrFieldNotFound(i))
}
if err := Validate(fv.Elem().Interface(), fr.rules...); err != nil {
if ie, ok := err.(InternalError); ok && ie.InternalError() != nil {
return err
}
if ft.Anonymous {
// merge errors from anonymous struct field
if es, ok := err.(Errors); ok {
for name, value := range es {
errs[name] = value
}
continue
}
}
errs[getErrorFieldName(ft)] = err
}
}
if len(errs) > 0 {
return errs
}
return nil
}
// Field specifies a struct field and the corresponding validation rules.
// The struct field must be specified as a pointer to it.
func Field(fieldPtr interface{}, rules ...Rule) *FieldRules {
return &FieldRules{
fieldPtr: fieldPtr,
rules: rules,
}
}
// findStructField looks for a field in the given struct.
// The field being looked for should be a pointer to the actual struct field.
// If found, the field info will be returned. Otherwise, nil will be returned.
func findStructField(structValue reflect.Value, fieldValue reflect.Value) *reflect.StructField {
ptr := fieldValue.Pointer()
for i := structValue.NumField() - 1; i >= 0; i-- {
sf := structValue.Type().Field(i)
if ptr == structValue.Field(i).UnsafeAddr() {
// do additional type comparison because it's possible that the address of
// an embedded struct is the same as the first field of the embedded struct
if sf.Type == fieldValue.Elem().Type() {
return &sf
}
}
if sf.Anonymous {
// delve into anonymous struct to look for the field
fi := structValue.Field(i)
if sf.Type.Kind() == reflect.Ptr {
fi = fi.Elem()
}
if fi.Kind() == reflect.Struct {
if f := findStructField(fi, fieldValue); f != nil {
return f
}
}
}
}
return nil
}
// getErrorFieldName returns the name that should be used to represent the validation error of a struct field.
func getErrorFieldName(f *reflect.StructField) string {
if tag := f.Tag.Get(ErrorTag); tag != "" {
if cps := strings.SplitN(tag, ",", 2); cps[0] != "" {
return cps[0]
}
}
return f.Name
}

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vendor/github.com/go-ozzo/ozzo-validation/util.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package validation
import (
"database/sql/driver"
"errors"
"fmt"
"reflect"
"time"
)
var (
bytesType = reflect.TypeOf([]byte(nil))
valuerType = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
)
// EnsureString ensures the given value is a string.
// If the value is a byte slice, it will be typecast into a string.
// An error is returned otherwise.
func EnsureString(value interface{}) (string, error) {
v := reflect.ValueOf(value)
if v.Kind() == reflect.String {
return v.String(), nil
}
if v.Type() == bytesType {
return string(v.Interface().([]byte)), nil
}
return "", errors.New("must be either a string or byte slice")
}
// StringOrBytes typecasts a value into a string or byte slice.
// Boolean flags are returned to indicate if the typecasting succeeds or not.
func StringOrBytes(value interface{}) (isString bool, str string, isBytes bool, bs []byte) {
v := reflect.ValueOf(value)
if v.Kind() == reflect.String {
str = v.String()
isString = true
} else if v.Kind() == reflect.Slice && v.Type() == bytesType {
bs = v.Interface().([]byte)
isBytes = true
}
return
}
// LengthOfValue returns the length of a value that is a string, slice, map, or array.
// An error is returned for all other types.
func LengthOfValue(value interface{}) (int, error) {
v := reflect.ValueOf(value)
switch v.Kind() {
case reflect.String, reflect.Slice, reflect.Map, reflect.Array:
return v.Len(), nil
}
return 0, fmt.Errorf("cannot get the length of %v", v.Kind())
}
// ToInt converts the given value to an int64.
// An error is returned for all incompatible types.
func ToInt(value interface{}) (int64, error) {
v := reflect.ValueOf(value)
switch v.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return v.Int(), nil
}
return 0, fmt.Errorf("cannot convert %v to int64", v.Kind())
}
// ToUint converts the given value to an uint64.
// An error is returned for all incompatible types.
func ToUint(value interface{}) (uint64, error) {
v := reflect.ValueOf(value)
switch v.Kind() {
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return v.Uint(), nil
}
return 0, fmt.Errorf("cannot convert %v to uint64", v.Kind())
}
// ToFloat converts the given value to a float64.
// An error is returned for all incompatible types.
func ToFloat(value interface{}) (float64, error) {
v := reflect.ValueOf(value)
switch v.Kind() {
case reflect.Float32, reflect.Float64:
return v.Float(), nil
}
return 0, fmt.Errorf("cannot convert %v to float64", v.Kind())
}
// IsEmpty checks if a value is empty or not.
// A value is considered empty if
// - integer, float: zero
// - bool: false
// - string, array: len() == 0
// - slice, map: nil or len() == 0
// - interface, pointer: nil or the referenced value is empty
func IsEmpty(value interface{}) bool {
v := reflect.ValueOf(value)
switch v.Kind() {
case reflect.String, reflect.Array, reflect.Map, reflect.Slice:
return v.Len() == 0
case reflect.Bool:
return !v.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return v.Int() == 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return v.Uint() == 0
case reflect.Float32, reflect.Float64:
return v.Float() == 0
case reflect.Invalid:
return true
case reflect.Interface, reflect.Ptr:
if v.IsNil() {
return true
}
return IsEmpty(v.Elem().Interface())
case reflect.Struct:
v, ok := value.(time.Time)
if ok && v.IsZero() {
return true
}
}
return false
}
// Indirect returns the value that the given interface or pointer references to.
// If the value implements driver.Valuer, it will deal with the value returned by
// the Value() method instead. A boolean value is also returned to indicate if
// the value is nil or not (only applicable to interface, pointer, map, and slice).
// If the value is neither an interface nor a pointer, it will be returned back.
func Indirect(value interface{}) (interface{}, bool) {
rv := reflect.ValueOf(value)
kind := rv.Kind()
switch kind {
case reflect.Invalid:
return nil, true
case reflect.Ptr, reflect.Interface:
if rv.IsNil() {
return nil, true
}
return Indirect(rv.Elem().Interface())
case reflect.Slice, reflect.Map, reflect.Func, reflect.Chan:
if rv.IsNil() {
return nil, true
}
}
if rv.Type().Implements(valuerType) {
return indirectValuer(value.(driver.Valuer))
}
return value, false
}
func indirectValuer(valuer driver.Valuer) (interface{}, bool) {
if value, err := valuer.Value(); value != nil && err == nil {
return Indirect(value)
}
return nil, true
}

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vendor/github.com/go-ozzo/ozzo-validation/validation.go generated vendored Normal file
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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// Package validation provides configurable and extensible rules for validating data of various types.
package validation
import (
"fmt"
"reflect"
"strconv"
)
type (
// Validatable is the interface indicating the type implementing it supports data validation.
Validatable interface {
// Validate validates the data and returns an error if validation fails.
Validate() error
}
// Rule represents a validation rule.
Rule interface {
// Validate validates a value and returns a value if validation fails.
Validate(value interface{}) error
}
// RuleFunc represents a validator function.
// You may wrap it as a Rule by calling By().
RuleFunc func(value interface{}) error
)
var (
// ErrorTag is the struct tag name used to customize the error field name for a struct field.
ErrorTag = "json"
// Skip is a special validation rule that indicates all rules following it should be skipped.
Skip = &skipRule{}
validatableType = reflect.TypeOf((*Validatable)(nil)).Elem()
)
// Validate validates the given value and returns the validation error, if any.
//
// Validate performs validation using the following steps:
// - validate the value against the rules passed in as parameters
// - if the value is a map and the map values implement `Validatable`, call `Validate` of every map value
// - if the value is a slice or array whose values implement `Validatable`, call `Validate` of every element
func Validate(value interface{}, rules ...Rule) error {
for _, rule := range rules {
if _, ok := rule.(*skipRule); ok {
return nil
}
if err := rule.Validate(value); err != nil {
return err
}
}
rv := reflect.ValueOf(value)
if (rv.Kind() == reflect.Ptr || rv.Kind() == reflect.Interface) && rv.IsNil() {
return nil
}
if v, ok := value.(Validatable); ok {
return v.Validate()
}
switch rv.Kind() {
case reflect.Map:
if rv.Type().Elem().Implements(validatableType) {
return validateMap(rv)
}
case reflect.Slice, reflect.Array:
if rv.Type().Elem().Implements(validatableType) {
return validateSlice(rv)
}
case reflect.Ptr, reflect.Interface:
return Validate(rv.Elem().Interface())
}
return nil
}
// validateMap validates a map of validatable elements
func validateMap(rv reflect.Value) error {
errs := Errors{}
for _, key := range rv.MapKeys() {
if mv := rv.MapIndex(key).Interface(); mv != nil {
if err := mv.(Validatable).Validate(); err != nil {
errs[fmt.Sprintf("%v", key.Interface())] = err
}
}
}
if len(errs) > 0 {
return errs
}
return nil
}
// validateMap validates a slice/array of validatable elements
func validateSlice(rv reflect.Value) error {
errs := Errors{}
l := rv.Len()
for i := 0; i < l; i++ {
if ev := rv.Index(i).Interface(); ev != nil {
if err := ev.(Validatable).Validate(); err != nil {
errs[strconv.Itoa(i)] = err
}
}
}
if len(errs) > 0 {
return errs
}
return nil
}
type skipRule struct{}
func (r *skipRule) Validate(interface{}) error {
return nil
}
type inlineRule struct {
f RuleFunc
}
func (r *inlineRule) Validate(value interface{}) error {
return r.f(value)
}
// By wraps a RuleFunc into a Rule.
func By(f RuleFunc) Rule {
return &inlineRule{f}
}