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Code Issues Releases Activity

add selector flag and logic (#46)

Browse Source 
* add selector flag and logic

* comments, cleanup

* add readme note for selector flag

* preserve comments, fix nits

* readme nit
This commit is contained in:
Scott Weiss 2019-06-27 16:55:47 -04:00 committed by jonjohnsonjr
parent b7d1820e13
commit 0c205ab8e4
21 changed files with 1483 additions and 6 deletions
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13
Gopkg.lock generated
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@ -600,6 +600,14 @@
revision = "4e209c9383fa00631d124c8adcc011d617339b3c"
version = "v1.11.8"
[[projects]]
digest = "1:7719608fe0b52a4ece56c2dde37bedd95b938677d1ab0f84b8a7852e4c59f849"
name = "sigs.k8s.io/yaml"
packages = ["."]
pruneopts = "UT"
revision = "fd68e9863619f6ec2fdd8625fe1f02e7c877e480"
version = "v1.1.0"
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
@ -622,7 +630,12 @@
"github.com/spf13/viper",
"golang.org/x/sync/errgroup",
"gopkg.in/yaml.v2",
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured",
"k8s.io/apimachinery/pkg/labels",
"k8s.io/apimachinery/pkg/runtime",
"k8s.io/apimachinery/pkg/util/yaml",
"k8s.io/kubernetes/pkg/kubectl/genericclioptions",
"sigs.k8s.io/yaml",
]
solver-name = "gps-cdcl"
solver-version = 1

8
README.md
View File

@ -219,6 +219,14 @@ spec:
It is notable that this is not the default (anymore) because certain popular
registries (including Docker Hub) do not support multi-level repository names.
`ko resolve`, `ko apply`, and `ko create` accept an optional `--selector` or `-l`
flag, similar to `kubectl`, which can be used to filter the resources from the
input Kubernetes YAMLs by their `metadata.labels`.
In the case of `ko resolve`, `--selector` will render only the resources that are selected by the provided selector.
See [the documentation on Kubernetes selectors](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/) for more information on using label selectors.
### `ko apply`
`ko apply` is intended to parallel `kubectl apply`, but acts on the same

4
pkg/commands/apply.go
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@ -33,6 +33,7 @@ func addApply(topLevel *cobra.Command) {
fo := &options.FilenameOptions{}
ta := &options.TagsOptions{}
do := &options.DebugOptions{}
so := &options.SelectorOptions{}
apply := &cobra.Command{
Use: "apply -f FILENAME",
Short: "Apply the input files with image references resolved to built/pushed image digests.",
@ -115,7 +116,7 @@ func addApply(topLevel *cobra.Command) {
stdin.Write([]byte("---\n"))
}
// Once primed kick things off.
resolveFilesToWriter(builder, publisher, fo, stdin)
resolveFilesToWriter(builder, publisher, fo, so, stdin)
}()
// Run it.
@ -129,6 +130,7 @@ func addApply(topLevel *cobra.Command) {
options.AddFileArg(apply, fo)
options.AddTagsArg(apply, ta)
options.AddDebugArg(apply, do)
options.AddSelectorArg(apply, so)
// Collect the ko-specific apply flags before registering the kubectl global
// flags so that we can ignore them when passing kubectl global flags through

4
pkg/commands/create.go
View File

@ -33,6 +33,7 @@ func addCreate(topLevel *cobra.Command) {
fo := &options.FilenameOptions{}
ta := &options.TagsOptions{}
do := &options.DebugOptions{}
so := &options.SelectorOptions{}
create := &cobra.Command{
Use: "create -f FILENAME",
Short: "Create the input files with image references resolved to built/pushed image digests.",
@ -115,7 +116,7 @@ func addCreate(topLevel *cobra.Command) {
stdin.Write([]byte("---\n"))
}
// Once primed kick things off.
resolveFilesToWriter(builder, publisher, fo, stdin)
resolveFilesToWriter(builder, publisher, fo, so, stdin)
}()
// Run it.
@ -129,6 +130,7 @@ func addCreate(topLevel *cobra.Command) {
options.AddFileArg(create, fo)
options.AddTagsArg(create, ta)
options.AddDebugArg(create, do)
options.AddSelectorArg(create, so)
// Collect the ko-specific apply flags before registering the kubectl global
// flags so that we can ignore them when passing kubectl global flags through

29
pkg/commands/options/selector.go Normal file
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@ -0,0 +1,29 @@
// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package options
import (
"github.com/spf13/cobra"
)
// SelectorOptions allows selecting objects from the input manifests by label
type SelectorOptions struct {
Selector string
}
func AddSelectorArg(cmd *cobra.Command, so *SelectorOptions) {
cmd.Flags().StringVarP(&so.Selector, "selector", "l", "",
"Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)")
}

4
pkg/commands/resolve.go
View File

@ -30,6 +30,7 @@ func addResolve(topLevel *cobra.Command) {
fo := &options.FilenameOptions{}
ta := &options.TagsOptions{}
do := &options.DebugOptions{}
so := &options.SelectorOptions{}
resolve := &cobra.Command{
Use: "resolve -f FILENAME",
@ -65,7 +66,7 @@ func addResolve(topLevel *cobra.Command) {
if err != nil {
log.Fatalf("error creating publisher: %v", err)
}
resolveFilesToWriter(builder, publisher, fo, os.Stdout)
resolveFilesToWriter(builder, publisher, fo, so, os.Stdout)
},
}
options.AddLocalArg(resolve, lo)
@ -73,5 +74,6 @@ func addResolve(topLevel *cobra.Command) {
options.AddFileArg(resolve, fo)
options.AddTagsArg(resolve, ta)
options.AddDebugArg(resolve, do)
options.AddSelectorArg(resolve, so)
topLevel.AddCommand(resolve)
}

13
pkg/commands/resolver.go
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@ -112,7 +112,7 @@ func makePublisher(no *options.NameOptions, lo *options.LocalOptions, ta *option
// resolvedFuture represents a "future" for the bytes of a resolved file.
type resolvedFuture chan []byte
func resolveFilesToWriter(builder *build.Caching, publisher publish.Interface, fo *options.FilenameOptions, out io.WriteCloser) {
func resolveFilesToWriter(builder *build.Caching, publisher publish.Interface, fo *options.FilenameOptions, so *options.SelectorOptions, out io.WriteCloser) {
defer out.Close()
// By having this as a channel, we can hook this up to a filesystem
@ -193,7 +193,7 @@ func resolveFilesToWriter(builder *build.Caching, publisher publish.Interface, f
recordingBuilder := &build.Recorder{
Builder: builder,
}
b, err := resolveFile(f, recordingBuilder, publisher)
b, err := resolveFile(f, recordingBuilder, publisher, so)
if err != nil {
// Don't let build errors disrupt the watch.
lg := log.Fatalf
@ -238,7 +238,7 @@ func resolveFilesToWriter(builder *build.Caching, publisher publish.Interface, f
}
}
func resolveFile(f string, builder build.Interface, pub publish.Interface) (b []byte, err error) {
func resolveFile(f string, builder build.Interface, pub publish.Interface, so *options.SelectorOptions) (b []byte, err error) {
if f == "-" {
b, err = ioutil.ReadAll(os.Stdin)
} else {
@ -248,5 +248,12 @@ func resolveFile(f string, builder build.Interface, pub publish.Interface) (b []
return nil, err
}
if so.Selector != "" {
b, err = resolve.FilterBySelector(b, so.Selector)
if err != nil {
return nil, err
}
}
return resolve.ImageReferences(b, builder, pub)
}

136
pkg/resolve/selector.go Normal file
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@ -0,0 +1,136 @@
// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resolve
import (
"bytes"
"fmt"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
yaml2json "k8s.io/apimachinery/pkg/util/yaml"
"regexp"
"sigs.k8s.io/yaml"
"strings"
)
// FilterBySelector filters out any resources
// from the raw manifest bytes whose labels
// don't match the provided selector
func FilterBySelector(input []byte, selectorString string) ([]byte, error) {
selector, err := labels.Parse(selectorString)
if err != nil {
return nil, err
}
var outputObjectsYaml [][]byte
// parse runtime.Objects from the input yaml
objects, err := parseUnstructured(input)
if err != nil {
return nil, err
}
for _, object := range objects {
// objects parsed by UnstructuredJSONScheme can only be of
// type *unstructured.Unstructured or *unstructured.UnstructuredList
switch unstructuredObj := object.obj.(type) {
case *unstructured.Unstructured:
// append the object if it matches the provided labels
if selector.Matches(labels.Set(unstructuredObj.GetLabels())) {
outputObjectsYaml = append(outputObjectsYaml, object.yaml)
}
case *unstructured.UnstructuredList:
// filter the list items based on label
var filteredItems []unstructured.Unstructured
for _, obj := range unstructuredObj.Items {
if selector.Matches(labels.Set(obj.GetLabels())) {
filteredItems = append(filteredItems, obj)
}
}
// only append the list if it still contains items after being filtered
switch len(filteredItems) {
case 0:
// the whole list was filtered, omit it from the resultant yaml
continue
case len(unstructuredObj.Items):
// nothing was filtered from the list, use the original yaml
outputObjectsYaml = append(outputObjectsYaml, object.yaml)
default:
unstructuredObj.Items = filteredItems
// list was partially filtered, we need to re-marshal it
rawJson, err := runtime.Encode(unstructured.UnstructuredJSONScheme, unstructuredObj)
if err != nil {
return nil, err
}
rawYaml, err := yaml.JSONToYAML(rawJson)
if err != nil {
return nil, err
}
outputObjectsYaml = append(outputObjectsYaml, rawYaml)
}
default:
panic(fmt.Sprintf("unknown object type %T parsed from yaml: \n%v ", object.obj, object.yaml))
}
}
// re-join the objects into a single manifest
return bytes.Join(outputObjectsYaml, []byte("---\n")), nil
}
var yamlSeparatorRegex = regexp.MustCompile("\n---")
// a tuple to represent a kubernetes object along with the original yaml snippet it was parsed from
type objectYamlTuple struct {
obj runtime.Object
yaml []byte
}
func parseUnstructured(rawYaml []byte) ([]objectYamlTuple, error) {
objectYamls := yamlSeparatorRegex.Split(string(rawYaml), -1)
var resources []objectYamlTuple
for _, objectYaml := range objectYamls {
// empty yaml snippets, such as those which can be
// generated by helm should be ignored
// else they may be parsed into empty map[string]interface{} objects
if isEmptyYamlSnippet(objectYaml) {
continue
}
jsn, err := yaml2json.ToJSON([]byte(objectYaml))
if err != nil {
return nil, err
}
runtimeObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, jsn)
if err != nil {
return nil, err
}
resources = append(resources, objectYamlTuple{obj: runtimeObj, yaml: []byte(objectYaml)})
}
return resources, nil
}
var commentRegex = regexp.MustCompile("#.*")
func isEmptyYamlSnippet(objYaml string) bool {
removeComments := commentRegex.ReplaceAllString(objYaml, "")
removeNewlines := strings.Replace(removeComments, "\n", "", -1)
removeDashes := strings.Replace(removeNewlines, "---", "", -1)
removeSpaces := strings.Replace(removeDashes, " ", "", -1)
return removeSpaces == ""
}

153
pkg/resolve/selector_test.go Normal file
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@ -0,0 +1,153 @@
// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resolve
import (
"strings"
"testing"
)
const (
webPod = `apiVersion: v1
kind: Pod
metadata:
labels:
# comments should be preserved
app: web
name: rss-site
`
dbPod = `apiVersion: v1
kind: Pod
metadata:
labels:
# comments should be preserved
app: db
name: rss-db
`
bothPods = webPod + `
---
` + dbPod
podList = `apiVersion: v1
kind: List
metadata:
resourceVersion: ""
selfLink: ""
items:
- apiVersion: v1
kind: Pod
metadata:
labels:
app: web
name: rss-site
- apiVersion: v1
kind: Pod
metadata:
labels:
app: db
name: rss-db
`
webSelector = `app=web`
notWebSelector = `app!=web`
webPodList = `apiVersion: v1
items:
- apiVersion: v1
kind: Pod
metadata:
labels:
app: web
name: rss-site
kind: List
metadata:
resourceVersion: ""
selfLink: ""
`
dbPodList = `apiVersion: v1
items:
- apiVersion: v1
kind: Pod
metadata:
labels:
app: db
name: rss-db
kind: List
metadata:
resourceVersion: ""
selfLink: ""
`
)
func TestSelector(t *testing.T) {
tests := []struct {
desc string
input string
selector string
expected string
}{{
desc: "single object with matching selector",
input: webPod,
selector: webSelector,
expected: webPod,
},
{
desc: "single object with non-matching selector",
input: webPod,
selector: notWebSelector,
expected: ``,
},
{
desc: "selector matching 1 of two objects",
input: bothPods,
selector: webSelector,
expected: webPod,
},
{
desc: "selector matching 1 of two objects",
input: bothPods,
selector: notWebSelector,
expected: dbPod,
},
{
desc: "selector matching elements of list object",
input: podList,
selector: webSelector,
expected: webPodList,
},
{
desc: "selector matching elements of list object",
input: podList,
selector: notWebSelector,
expected: dbPodList,
},
{
desc: "selector matching all elements of list object",
input: podList,
selector: ``,
expected: podList,
}}
for _, test := range tests {
t.Run(test.desc, func(t *testing.T) {
filtered, err := FilterBySelector([]byte(test.input), test.selector)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if strings.TrimSpace(string(filtered)) != strings.TrimSpace(test.expected) {
t.Errorf("expected \n%v\n to equal \n%v\n ", string(filtered), test.expected)
}
})
}
}

20
vendor/sigs.k8s.io/yaml/.gitignore generated vendored Normal file
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@ -0,0 +1,20 @@
# OSX leaves these everywhere on SMB shares
._*
# Eclipse files
.classpath
.project
.settings/**
# Emacs save files
*~
# Vim-related files
[._]*.s[a-w][a-z]
[._]s[a-w][a-z]
*.un~
Session.vim
.netrwhist
# Go test binaries
*.test

14
vendor/sigs.k8s.io/yaml/.travis.yml generated vendored Normal file
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@ -0,0 +1,14 @@
language: go
dist: xenial
go:
- 1.9.x
- 1.10.x
- 1.11.x
script:
- go get -t -v ./...
- diff -u <(echo -n) <(gofmt -d .)
- diff -u <(echo -n) <(golint $(go list -e ./...) | grep -v YAMLToJSON)
- go tool vet .
- go test -v -race ./...
install:
- go get golang.org/x/lint/golint

31
vendor/sigs.k8s.io/yaml/CONTRIBUTING.md generated vendored Normal file
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@ -0,0 +1,31 @@
# Contributing Guidelines
Welcome to Kubernetes. We are excited about the prospect of you joining our [community](https://github.com/kubernetes/community)! The Kubernetes community abides by the CNCF [code of conduct](code-of-conduct.md). Here is an excerpt:
_As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities._
## Getting Started
We have full documentation on how to get started contributing here:
<!---
If your repo has certain guidelines for contribution, put them here ahead of the general k8s resources
-->
- [Contributor License Agreement](https://git.k8s.io/community/CLA.md) Kubernetes projects require that you sign a Contributor License Agreement (CLA) before we can accept your pull requests
- [Kubernetes Contributor Guide](http://git.k8s.io/community/contributors/guide) - Main contributor documentation, or you can just jump directly to the [contributing section](http://git.k8s.io/community/contributors/guide#contributing)
- [Contributor Cheat Sheet](https://git.k8s.io/community/contributors/guide/contributor-cheatsheet.md) - Common resources for existing developers
## Mentorship
- [Mentoring Initiatives](https://git.k8s.io/community/mentoring) - We have a diverse set of mentorship programs available that are always looking for volunteers!
<!---
Custom Information - if you're copying this template for the first time you can add custom content here, for example:
## Contact Information
- [Slack channel](https://kubernetes.slack.com/messages/kubernetes-users) - Replace `kubernetes-users` with your slack channel string, this will send users directly to your channel.
- [Mailing list](URL)
-->

50
vendor/sigs.k8s.io/yaml/LICENSE generated vendored Normal file
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@ -0,0 +1,50 @@
The MIT License (MIT)
Copyright (c) 2014 Sam Ghods
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.
Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

25
vendor/sigs.k8s.io/yaml/OWNERS generated vendored Normal file
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@ -0,0 +1,25 @@
approvers:
- dims
- lavalamp
- smarterclayton
- deads2k
- sttts
- liggitt
- caesarxuchao
reviewers:
- dims
- thockin
- lavalamp
- smarterclayton
- wojtek-t
- deads2k
- derekwaynecarr
- caesarxuchao
- mikedanese
- liggitt
- gmarek
- sttts
- ncdc
- tallclair
labels:
- sig/api-machinery

121
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@ -0,0 +1,121 @@
# YAML marshaling and unmarshaling support for Go
[![Build Status](https://travis-ci.org/ghodss/yaml.svg)](https://travis-ci.org/ghodss/yaml)
## Introduction
A wrapper around [go-yaml](https://github.com/go-yaml/yaml) designed to enable a better way of handling YAML when marshaling to and from structs.
In short, this library first converts YAML to JSON using go-yaml and then uses `json.Marshal` and `json.Unmarshal` to convert to or from the struct. This means that it effectively reuses the JSON struct tags as well as the custom JSON methods `MarshalJSON` and `UnmarshalJSON` unlike go-yaml. For a detailed overview of the rationale behind this method, [see this blog post](http://ghodss.com/2014/the-right-way-to-handle-yaml-in-golang/).
## Compatibility
This package uses [go-yaml](https://github.com/go-yaml/yaml) and therefore supports [everything go-yaml supports](https://github.com/go-yaml/yaml#compatibility).
## Caveats
**Caveat #1:** When using `yaml.Marshal` and `yaml.Unmarshal`, binary data should NOT be preceded with the `!!binary` YAML tag. If you do, go-yaml will convert the binary data from base64 to native binary data, which is not compatible with JSON. You can still use binary in your YAML files though - just store them without the `!!binary` tag and decode the base64 in your code (e.g. in the custom JSON methods `MarshalJSON` and `UnmarshalJSON`). This also has the benefit that your YAML and your JSON binary data will be decoded exactly the same way. As an example:
```
BAD:
exampleKey: !!binary gIGC
GOOD:
exampleKey: gIGC
... and decode the base64 data in your code.
```
**Caveat #2:** When using `YAMLToJSON` directly, maps with keys that are maps will result in an error since this is not supported by JSON. This error will occur in `Unmarshal` as well since you can't unmarshal map keys anyways since struct fields can't be keys.
## Installation and usage
To install, run:
```
$ go get github.com/ghodss/yaml
```
And import using:
```
import "github.com/ghodss/yaml"
```
Usage is very similar to the JSON library:
```go
package main
import (
"fmt"
"github.com/ghodss/yaml"
)
type Person struct {
Name string `json:"name"` // Affects YAML field names too.
Age int `json:"age"`
}
func main() {
// Marshal a Person struct to YAML.
p := Person{"John", 30}
y, err := yaml.Marshal(p)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(y))
/* Output:
age: 30
name: John
*/
// Unmarshal the YAML back into a Person struct.
var p2 Person
err = yaml.Unmarshal(y, &p2)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(p2)
/* Output:
{John 30}
*/
}
```
`yaml.YAMLToJSON` and `yaml.JSONToYAML` methods are also available:
```go
package main
import (
"fmt"
"github.com/ghodss/yaml"
)
func main() {
j := []byte(`{"name": "John", "age": 30}`)
y, err := yaml.JSONToYAML(j)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(y))
/* Output:
name: John
age: 30
*/
j2, err := yaml.YAMLToJSON(y)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(j2))
/* Output:
{"age":30,"name":"John"}
*/
}
```

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@ -0,0 +1,9 @@
# Release Process
The `yaml` Project is released on an as-needed basis. The process is as follows:
1. An issue is proposing a new release with a changelog since the last release
1. All [OWNERS](OWNERS) must LGTM this release
1. An OWNER runs `git tag -s $VERSION` and inserts the changelog and pushes the tag with `git push $VERSION`
1. The release issue is closed
1. An announcement email is sent to `kubernetes-dev@googlegroups.com` with the subject `[ANNOUNCE] kubernetes-template-project $VERSION is released`

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@ -0,0 +1,17 @@
# Defined below are the security contacts for this repo.
#
# They are the contact point for the Product Security Team to reach out
# to for triaging and handling of incoming issues.
#
# The below names agree to abide by the
# [Embargo Policy](https://github.com/kubernetes/sig-release/blob/master/security-release-process-documentation/security-release-process.md#embargo-policy)
# and will be removed and replaced if they violate that agreement.
#
# DO NOT REPORT SECURITY VULNERABILITIES DIRECTLY TO THESE NAMES, FOLLOW THE
# INSTRUCTIONS AT https://kubernetes.io/security/
cjcullen
jessfraz
liggitt
philips
tallclair

3
vendor/sigs.k8s.io/yaml/code-of-conduct.md generated vendored Normal file
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# Kubernetes Community Code of Conduct
Please refer to our [Kubernetes Community Code of Conduct](https://git.k8s.io/community/code-of-conduct.md)

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package yaml
import (
"bytes"
"encoding"
"encoding/json"
"reflect"
"sort"
"strings"
"sync"
"unicode"
"unicode/utf8"
)
// indirect walks down v allocating pointers as needed,
// until it gets to a non-pointer.
// if it encounters an Unmarshaler, indirect stops and returns that.
// if decodingNull is true, indirect stops at the last pointer so it can be set to nil.
func indirect(v reflect.Value, decodingNull bool) (json.Unmarshaler, encoding.TextUnmarshaler, reflect.Value) {
// If v is a named type and is addressable,
// start with its address, so that if the type has pointer methods,
// we find them.
if v.Kind() != reflect.Ptr && v.Type().Name() != "" && v.CanAddr() {
v = v.Addr()
}
for {
// Load value from interface, but only if the result will be
// usefully addressable.
if v.Kind() == reflect.Interface && !v.IsNil() {
e := v.Elem()
if e.Kind() == reflect.Ptr && !e.IsNil() && (!decodingNull || e.Elem().Kind() == reflect.Ptr) {
v = e
continue
}
}
if v.Kind() != reflect.Ptr {
break
}
if v.Elem().Kind() != reflect.Ptr && decodingNull && v.CanSet() {
break
}
if v.IsNil() {
if v.CanSet() {
v.Set(reflect.New(v.Type().Elem()))
} else {
v = reflect.New(v.Type().Elem())
}
}
if v.Type().NumMethod() > 0 {
if u, ok := v.Interface().(json.Unmarshaler); ok {
return u, nil, reflect.Value{}
}
if u, ok := v.Interface().(encoding.TextUnmarshaler); ok {
return nil, u, reflect.Value{}
}
}
v = v.Elem()
}
return nil, nil, v
}
// A field represents a single field found in a struct.
type field struct {
name string
nameBytes []byte // []byte(name)
equalFold func(s, t []byte) bool // bytes.EqualFold or equivalent
tag bool
index []int
typ reflect.Type
omitEmpty bool
quoted bool
}
func fillField(f field) field {
f.nameBytes = []byte(f.name)
f.equalFold = foldFunc(f.nameBytes)
return f
}
// byName sorts field by name, breaking ties with depth,
// then breaking ties with "name came from json tag", then
// breaking ties with index sequence.
type byName []field
func (x byName) Len() int { return len(x) }
func (x byName) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byName) Less(i, j int) bool {
if x[i].name != x[j].name {
return x[i].name < x[j].name
}
if len(x[i].index) != len(x[j].index) {
return len(x[i].index) < len(x[j].index)
}
if x[i].tag != x[j].tag {
return x[i].tag
}
return byIndex(x).Less(i, j)
}
// byIndex sorts field by index sequence.
type byIndex []field
func (x byIndex) Len() int { return len(x) }
func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byIndex) Less(i, j int) bool {
for k, xik := range x[i].index {
if k >= len(x[j].index) {
return false
}
if xik != x[j].index[k] {
return xik < x[j].index[k]
}
}
return len(x[i].index) < len(x[j].index)
}
// typeFields returns a list of fields that JSON should recognize for the given type.
// The algorithm is breadth-first search over the set of structs to include - the top struct
// and then any reachable anonymous structs.
func typeFields(t reflect.Type) []field {
// Anonymous fields to explore at the current level and the next.
current := []field{}
next := []field{{typ: t}}
// Count of queued names for current level and the next.
count := map[reflect.Type]int{}
nextCount := map[reflect.Type]int{}
// Types already visited at an earlier level.
visited := map[reflect.Type]bool{}
// Fields found.
var fields []field
for len(next) > 0 {
current, next = next, current[:0]
count, nextCount = nextCount, map[reflect.Type]int{}
for _, f := range current {
if visited[f.typ] {
continue
}
visited[f.typ] = true
// Scan f.typ for fields to include.
for i := 0; i < f.typ.NumField(); i++ {
sf := f.typ.Field(i)
if sf.PkgPath != "" { // unexported
continue
}
tag := sf.Tag.Get("json")
if tag == "-" {
continue
}
name, opts := parseTag(tag)
if !isValidTag(name) {
name = ""
}
index := make([]int, len(f.index)+1)
copy(index, f.index)
index[len(f.index)] = i
ft := sf.Type
if ft.Name() == "" && ft.Kind() == reflect.Ptr {
// Follow pointer.
ft = ft.Elem()
}
// Record found field and index sequence.
if name != "" || !sf.Anonymous || ft.Kind() != reflect.Struct {
tagged := name != ""
if name == "" {
name = sf.Name
}
fields = append(fields, fillField(field{
name: name,
tag: tagged,
index: index,
typ: ft,
omitEmpty: opts.Contains("omitempty"),
quoted: opts.Contains("string"),
}))
if count[f.typ] > 1 {
// If there were multiple instances, add a second,
// so that the annihilation code will see a duplicate.
// It only cares about the distinction between 1 or 2,
// so don't bother generating any more copies.
fields = append(fields, fields[len(fields)-1])
}
continue
}
// Record new anonymous struct to explore in next round.
nextCount[ft]++
if nextCount[ft] == 1 {
next = append(next, fillField(field{name: ft.Name(), index: index, typ: ft}))
}
}
}
}
sort.Sort(byName(fields))
// Delete all fields that are hidden by the Go rules for embedded fields,
// except that fields with JSON tags are promoted.
// The fields are sorted in primary order of name, secondary order
// of field index length. Loop over names; for each name, delete
// hidden fields by choosing the one dominant field that survives.
out := fields[:0]
for advance, i := 0, 0; i < len(fields); i += advance {
// One iteration per name.
// Find the sequence of fields with the name of this first field.
fi := fields[i]
name := fi.name
for advance = 1; i+advance < len(fields); advance++ {
fj := fields[i+advance]
if fj.name != name {
break
}
}
if advance == 1 { // Only one field with this name
out = append(out, fi)
continue
}
dominant, ok := dominantField(fields[i : i+advance])
if ok {
out = append(out, dominant)
}
}
fields = out
sort.Sort(byIndex(fields))
return fields
}
// dominantField looks through the fields, all of which are known to
// have the same name, to find the single field that dominates the
// others using Go's embedding rules, modified by the presence of
// JSON tags. If there are multiple top-level fields, the boolean
// will be false: This condition is an error in Go and we skip all
// the fields.
func dominantField(fields []field) (field, bool) {
// The fields are sorted in increasing index-length order. The winner
// must therefore be one with the shortest index length. Drop all
// longer entries, which is easy: just truncate the slice.
length := len(fields[0].index)
tagged := -1 // Index of first tagged field.
for i, f := range fields {
if len(f.index) > length {
fields = fields[:i]
break
}
if f.tag {
if tagged >= 0 {
// Multiple tagged fields at the same level: conflict.
// Return no field.
return field{}, false
}
tagged = i
}
}
if tagged >= 0 {
return fields[tagged], true
}
// All remaining fields have the same length. If there's more than one,
// we have a conflict (two fields named "X" at the same level) and we
// return no field.
if len(fields) > 1 {
return field{}, false
}
return fields[0], true
}
var fieldCache struct {
sync.RWMutex
m map[reflect.Type][]field
}
// cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
func cachedTypeFields(t reflect.Type) []field {
fieldCache.RLock()
f := fieldCache.m[t]
fieldCache.RUnlock()
if f != nil {
return f
}
// Compute fields without lock.
// Might duplicate effort but won't hold other computations back.
f = typeFields(t)
if f == nil {
f = []field{}
}
fieldCache.Lock()
if fieldCache.m == nil {
fieldCache.m = map[reflect.Type][]field{}
}
fieldCache.m[t] = f
fieldCache.Unlock()
return f
}
func isValidTag(s string) bool {
if s == "" {
return false
}
for _, c := range s {
switch {
case strings.ContainsRune("!#$%&()*+-./:<=>?@[]^_{|}~ ", c):
// Backslash and quote chars are reserved, but
// otherwise any punctuation chars are allowed
// in a tag name.
default:
if !unicode.IsLetter(c) && !unicode.IsDigit(c) {
return false
}
}
}
return true
}
const (
caseMask = ^byte(0x20) // Mask to ignore case in ASCII.
kelvin = '\u212a'
smallLongEss = '\u017f'
)
// foldFunc returns one of four different case folding equivalence
// functions, from most general (and slow) to fastest:
//
// 1) bytes.EqualFold, if the key s contains any non-ASCII UTF-8
// 2) equalFoldRight, if s contains special folding ASCII ('k', 'K', 's', 'S')
// 3) asciiEqualFold, no special, but includes non-letters (including _)
// 4) simpleLetterEqualFold, no specials, no non-letters.
//
// The letters S and K are special because they map to 3 runes, not just 2:
// * S maps to s and to U+017F 'ſ' Latin small letter long s
// * k maps to K and to U+212A 'K' Kelvin sign
// See http://play.golang.org/p/tTxjOc0OGo
//
// The returned function is specialized for matching against s and
// should only be given s. It's not curried for performance reasons.
func foldFunc(s []byte) func(s, t []byte) bool {
nonLetter := false
special := false // special letter
for _, b := range s {
if b >= utf8.RuneSelf {
return bytes.EqualFold
}
upper := b & caseMask
if upper < 'A' || upper > 'Z' {
nonLetter = true
} else if upper == 'K' || upper == 'S' {
// See above for why these letters are special.
special = true
}
}
if special {
return equalFoldRight
}
if nonLetter {
return asciiEqualFold
}
return simpleLetterEqualFold
}
// equalFoldRight is a specialization of bytes.EqualFold when s is
// known to be all ASCII (including punctuation), but contains an 's',
// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
// See comments on foldFunc.
func equalFoldRight(s, t []byte) bool {
for _, sb := range s {
if len(t) == 0 {
return false
}
tb := t[0]
if tb < utf8.RuneSelf {
if sb != tb {
sbUpper := sb & caseMask
if 'A' <= sbUpper && sbUpper <= 'Z' {
if sbUpper != tb&caseMask {
return false
}
} else {
return false
}
}
t = t[1:]
continue
}
// sb is ASCII and t is not. t must be either kelvin
// sign or long s; sb must be s, S, k, or K.
tr, size := utf8.DecodeRune(t)
switch sb {
case 's', 'S':
if tr != smallLongEss {
return false
}
case 'k', 'K':
if tr != kelvin {
return false
}
default:
return false
}
t = t[size:]
}
if len(t) > 0 {
return false
}
return true
}
// asciiEqualFold is a specialization of bytes.EqualFold for use when
// s is all ASCII (but may contain non-letters) and contains no
// special-folding letters.
// See comments on foldFunc.
func asciiEqualFold(s, t []byte) bool {
if len(s) != len(t) {
return false
}
for i, sb := range s {
tb := t[i]
if sb == tb {
continue
}
if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
if sb&caseMask != tb&caseMask {
return false
}
} else {
return false
}
}
return true
}
// simpleLetterEqualFold is a specialization of bytes.EqualFold for
// use when s is all ASCII letters (no underscores, etc) and also
// doesn't contain 'k', 'K', 's', or 'S'.
// See comments on foldFunc.
func simpleLetterEqualFold(s, t []byte) bool {
if len(s) != len(t) {
return false
}
for i, b := range s {
if b&caseMask != t[i]&caseMask {
return false
}
}
return true
}
// tagOptions is the string following a comma in a struct field's "json"
// tag, or the empty string. It does not include the leading comma.
type tagOptions string
// parseTag splits a struct field's json tag into its name and
// comma-separated options.
func parseTag(tag string) (string, tagOptions) {
if idx := strings.Index(tag, ","); idx != -1 {
return tag[:idx], tagOptions(tag[idx+1:])
}
return tag, tagOptions("")
}
// Contains reports whether a comma-separated list of options
// contains a particular substr flag. substr must be surrounded by a
// string boundary or commas.
func (o tagOptions) Contains(optionName string) bool {
if len(o) == 0 {
return false
}
s := string(o)
for s != "" {
var next string
i := strings.Index(s, ",")
if i >= 0 {
s, next = s[:i], s[i+1:]
}
if s == optionName {
return true
}
s = next
}
return false
}

319
vendor/sigs.k8s.io/yaml/yaml.go generated vendored Normal file
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package yaml
import (
"bytes"
"encoding/json"
"fmt"
"io"
"reflect"
"strconv"
"gopkg.in/yaml.v2"
)
// Marshal marshals the object into JSON then converts JSON to YAML and returns the
// YAML.
func Marshal(o interface{}) ([]byte, error) {
j, err := json.Marshal(o)
if err != nil {
return nil, fmt.Errorf("error marshaling into JSON: %v", err)
}
y, err := JSONToYAML(j)
if err != nil {
return nil, fmt.Errorf("error converting JSON to YAML: %v", err)
}
return y, nil
}
// JSONOpt is a decoding option for decoding from JSON format.
type JSONOpt func(*json.Decoder) *json.Decoder
// Unmarshal converts YAML to JSON then uses JSON to unmarshal into an object,
// optionally configuring the behavior of the JSON unmarshal.
func Unmarshal(y []byte, o interface{}, opts ...JSONOpt) error {
return yamlUnmarshal(y, o, false, opts...)
}
// UnmarshalStrict strictly converts YAML to JSON then uses JSON to unmarshal
// into an object, optionally configuring the behavior of the JSON unmarshal.
func UnmarshalStrict(y []byte, o interface{}, opts ...JSONOpt) error {
return yamlUnmarshal(y, o, true, append(opts, DisallowUnknownFields)...)
}
// yamlUnmarshal unmarshals the given YAML byte stream into the given interface,
// optionally performing the unmarshalling strictly
func yamlUnmarshal(y []byte, o interface{}, strict bool, opts ...JSONOpt) error {
vo := reflect.ValueOf(o)
unmarshalFn := yaml.Unmarshal
if strict {
unmarshalFn = yaml.UnmarshalStrict
}
j, err := yamlToJSON(y, &vo, unmarshalFn)
if err != nil {
return fmt.Errorf("error converting YAML to JSON: %v", err)
}
err = jsonUnmarshal(bytes.NewReader(j), o, opts...)
if err != nil {
return fmt.Errorf("error unmarshaling JSON: %v", err)
}
return nil
}
// jsonUnmarshal unmarshals the JSON byte stream from the given reader into the
// object, optionally applying decoder options prior to decoding. We are not
// using json.Unmarshal directly as we want the chance to pass in non-default
// options.
func jsonUnmarshal(r io.Reader, o interface{}, opts ...JSONOpt) error {
d := json.NewDecoder(r)
for _, opt := range opts {
d = opt(d)
}
if err := d.Decode(&o); err != nil {
return fmt.Errorf("while decoding JSON: %v", err)
}
return nil
}
// JSONToYAML Converts JSON to YAML.
func JSONToYAML(j []byte) ([]byte, error) {
// Convert the JSON to an object.
var jsonObj interface{}
// We are using yaml.Unmarshal here (instead of json.Unmarshal) because the
// Go JSON library doesn't try to pick the right number type (int, float,
// etc.) when unmarshalling to interface{}, it just picks float64
// universally. go-yaml does go through the effort of picking the right
// number type, so we can preserve number type throughout this process.
err := yaml.Unmarshal(j, &jsonObj)
if err != nil {
return nil, err
}
// Marshal this object into YAML.
return yaml.Marshal(jsonObj)
}
// YAMLToJSON converts YAML to JSON. Since JSON is a subset of YAML,
// passing JSON through this method should be a no-op.
//
// Things YAML can do that are not supported by JSON:
// * In YAML you can have binary and null keys in your maps. These are invalid
// in JSON. (int and float keys are converted to strings.)
// * Binary data in YAML with the !!binary tag is not supported. If you want to
// use binary data with this library, encode the data as base64 as usual but do
// not use the !!binary tag in your YAML. This will ensure the original base64
// encoded data makes it all the way through to the JSON.
//
// For strict decoding of YAML, use YAMLToJSONStrict.
func YAMLToJSON(y []byte) ([]byte, error) {
return yamlToJSON(y, nil, yaml.Unmarshal)
}
// YAMLToJSONStrict is like YAMLToJSON but enables strict YAML decoding,
// returning an error on any duplicate field names.
func YAMLToJSONStrict(y []byte) ([]byte, error) {
return yamlToJSON(y, nil, yaml.UnmarshalStrict)
}
func yamlToJSON(y []byte, jsonTarget *reflect.Value, yamlUnmarshal func([]byte, interface{}) error) ([]byte, error) {
// Convert the YAML to an object.
var yamlObj interface{}
err := yamlUnmarshal(y, &yamlObj)
if err != nil {
return nil, err
}
// YAML objects are not completely compatible with JSON objects (e.g. you
// can have non-string keys in YAML). So, convert the YAML-compatible object
// to a JSON-compatible object, failing with an error if irrecoverable
// incompatibilties happen along the way.
jsonObj, err := convertToJSONableObject(yamlObj, jsonTarget)
if err != nil {
return nil, err
}
// Convert this object to JSON and return the data.
return json.Marshal(jsonObj)
}
func convertToJSONableObject(yamlObj interface{}, jsonTarget *reflect.Value) (interface{}, error) {
var err error
// Resolve jsonTarget to a concrete value (i.e. not a pointer or an
// interface). We pass decodingNull as false because we're not actually
// decoding into the value, we're just checking if the ultimate target is a
// string.
if jsonTarget != nil {
ju, tu, pv := indirect(*jsonTarget, false)
// We have a JSON or Text Umarshaler at this level, so we can't be trying
// to decode into a string.
if ju != nil || tu != nil {
jsonTarget = nil
} else {
jsonTarget = &pv
}
}
// If yamlObj is a number or a boolean, check if jsonTarget is a string -
// if so, coerce. Else return normal.
// If yamlObj is a map or array, find the field that each key is
// unmarshaling to, and when you recurse pass the reflect.Value for that
// field back into this function.
switch typedYAMLObj := yamlObj.(type) {
case map[interface{}]interface{}:
// JSON does not support arbitrary keys in a map, so we must convert
// these keys to strings.
//
// From my reading of go-yaml v2 (specifically the resolve function),
// keys can only have the types string, int, int64, float64, binary
// (unsupported), or null (unsupported).
strMap := make(map[string]interface{})
for k, v := range typedYAMLObj {
// Resolve the key to a string first.
var keyString string
switch typedKey := k.(type) {
case string:
keyString = typedKey
case int:
keyString = strconv.Itoa(typedKey)
case int64:
// go-yaml will only return an int64 as a key if the system
// architecture is 32-bit and the key's value is between 32-bit
// and 64-bit. Otherwise the key type will simply be int.
keyString = strconv.FormatInt(typedKey, 10)
case float64:
// Stolen from go-yaml to use the same conversion to string as
// the go-yaml library uses to convert float to string when
// Marshaling.
s := strconv.FormatFloat(typedKey, 'g', -1, 32)
switch s {
case "+Inf":
s = ".inf"
case "-Inf":
s = "-.inf"
case "NaN":
s = ".nan"
}
keyString = s
case bool:
if typedKey {
keyString = "true"
} else {
keyString = "false"
}
default:
return nil, fmt.Errorf("Unsupported map key of type: %s, key: %+#v, value: %+#v",
reflect.TypeOf(k), k, v)
}
// jsonTarget should be a struct or a map. If it's a struct, find
// the field it's going to map to and pass its reflect.Value. If
// it's a map, find the element type of the map and pass the
// reflect.Value created from that type. If it's neither, just pass
// nil - JSON conversion will error for us if it's a real issue.
if jsonTarget != nil {
t := *jsonTarget
if t.Kind() == reflect.Struct {
keyBytes := []byte(keyString)
// Find the field that the JSON library would use.
var f *field
fields := cachedTypeFields(t.Type())
for i := range fields {
ff := &fields[i]
if bytes.Equal(ff.nameBytes, keyBytes) {
f = ff
break
}
// Do case-insensitive comparison.
if f == nil && ff.equalFold(ff.nameBytes, keyBytes) {
f = ff
}
}
if f != nil {
// Find the reflect.Value of the most preferential
// struct field.
jtf := t.Field(f.index[0])
strMap[keyString], err = convertToJSONableObject(v, &jtf)
if err != nil {
return nil, err
}
continue
}
} else if t.Kind() == reflect.Map {
// Create a zero value of the map's element type to use as
// the JSON target.
jtv := reflect.Zero(t.Type().Elem())
strMap[keyString], err = convertToJSONableObject(v, &jtv)
if err != nil {
return nil, err
}
continue
}
}
strMap[keyString], err = convertToJSONableObject(v, nil)
if err != nil {
return nil, err
}
}
return strMap, nil
case []interface{}:
// We need to recurse into arrays in case there are any
// map[interface{}]interface{}'s inside and to convert any
// numbers to strings.
// If jsonTarget is a slice (which it really should be), find the
// thing it's going to map to. If it's not a slice, just pass nil
// - JSON conversion will error for us if it's a real issue.
var jsonSliceElemValue *reflect.Value
if jsonTarget != nil {
t := *jsonTarget
if t.Kind() == reflect.Slice {
// By default slices point to nil, but we need a reflect.Value
// pointing to a value of the slice type, so we create one here.
ev := reflect.Indirect(reflect.New(t.Type().Elem()))
jsonSliceElemValue = &ev
}
}
// Make and use a new array.
arr := make([]interface{}, len(typedYAMLObj))
for i, v := range typedYAMLObj {
arr[i], err = convertToJSONableObject(v, jsonSliceElemValue)
if err != nil {
return nil, err
}
}
return arr, nil
default:
// If the target type is a string and the YAML type is a number,
// convert the YAML type to a string.
if jsonTarget != nil && (*jsonTarget).Kind() == reflect.String {
// Based on my reading of go-yaml, it may return int, int64,
// float64, or uint64.
var s string
switch typedVal := typedYAMLObj.(type) {
case int:
s = strconv.FormatInt(int64(typedVal), 10)
case int64:
s = strconv.FormatInt(typedVal, 10)
case float64:
s = strconv.FormatFloat(typedVal, 'g', -1, 32)
case uint64:
s = strconv.FormatUint(typedVal, 10)
case bool:
if typedVal {
s = "true"
} else {
s = "false"
}
}
if len(s) > 0 {
yamlObj = interface{}(s)
}
}
return yamlObj, nil
}
}

14
vendor/sigs.k8s.io/yaml/yaml_go110.go generated vendored Normal file
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// This file contains changes that are only compatible with go 1.10 and onwards.
// +build go1.10
package yaml
import "encoding/json"
// DisallowUnknownFields configures the JSON decoder to error out if unknown
// fields come along, instead of dropping them by default.
func DisallowUnknownFields(d *json.Decoder) *json.Decoder {
d.DisallowUnknownFields()
return d
}