2019-05-16 22:23:05 +00:00
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/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package generators has the generators for the client-gen utility.
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package generators
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import (
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"path/filepath"
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"strings"
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clientgenargs "k8s.io/code-generator/cmd/client-gen/args"
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"k8s.io/code-generator/cmd/client-gen/generators/fake"
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"k8s.io/code-generator/cmd/client-gen/generators/scheme"
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"k8s.io/code-generator/cmd/client-gen/generators/util"
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"k8s.io/code-generator/cmd/client-gen/path"
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clientgentypes "k8s.io/code-generator/cmd/client-gen/types"
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codegennamer "k8s.io/code-generator/pkg/namer"
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genutil "k8s.io/code-generator/pkg/util"
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2019-05-16 22:23:05 +00:00
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"k8s.io/gengo/args"
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"k8s.io/gengo/generator"
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"k8s.io/gengo/namer"
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"k8s.io/gengo/types"
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2021-05-15 10:08:31 +00:00
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"k8s.io/klog/v2"
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2019-05-16 22:23:05 +00:00
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)
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// NameSystems returns the name system used by the generators in this package.
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func NameSystems(pluralExceptions map[string]string) namer.NameSystems {
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lowercaseNamer := namer.NewAllLowercasePluralNamer(pluralExceptions)
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publicNamer := &ExceptionNamer{
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Exceptions: map[string]string{
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// these exceptions are used to deconflict the generated code
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// you can put your fully qualified package like
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// to generate a name that doesn't conflict with your group.
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// "k8s.io/apis/events/v1beta1.Event": "EventResource"
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},
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KeyFunc: func(t *types.Type) string {
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return t.Name.Package + "." + t.Name.Name
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},
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Delegate: namer.NewPublicNamer(0),
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}
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privateNamer := &ExceptionNamer{
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Exceptions: map[string]string{
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// these exceptions are used to deconflict the generated code
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// you can put your fully qualified package like
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// to generate a name that doesn't conflict with your group.
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// "k8s.io/apis/events/v1beta1.Event": "eventResource"
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},
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KeyFunc: func(t *types.Type) string {
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return t.Name.Package + "." + t.Name.Name
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},
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Delegate: namer.NewPrivateNamer(0),
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}
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publicPluralNamer := &ExceptionNamer{
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Exceptions: map[string]string{
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// these exceptions are used to deconflict the generated code
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// you can put your fully qualified package like
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// to generate a name that doesn't conflict with your group.
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// "k8s.io/apis/events/v1beta1.Event": "EventResource"
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},
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KeyFunc: func(t *types.Type) string {
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return t.Name.Package + "." + t.Name.Name
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},
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Delegate: namer.NewPublicPluralNamer(pluralExceptions),
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}
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privatePluralNamer := &ExceptionNamer{
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Exceptions: map[string]string{
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// you can put your fully qualified package like
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// to generate a name that doesn't conflict with your group.
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// "k8s.io/apis/events/v1beta1.Event": "eventResource"
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// these exceptions are used to deconflict the generated code
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"k8s.io/apis/events/v1beta1.Event": "eventResources",
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"k8s.io/kubernetes/pkg/apis/events.Event": "eventResources",
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},
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KeyFunc: func(t *types.Type) string {
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return t.Name.Package + "." + t.Name.Name
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},
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Delegate: namer.NewPrivatePluralNamer(pluralExceptions),
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}
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return namer.NameSystems{
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"singularKind": namer.NewPublicNamer(0),
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"public": publicNamer,
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"private": privateNamer,
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"raw": namer.NewRawNamer("", nil),
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"publicPlural": publicPluralNamer,
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"privatePlural": privatePluralNamer,
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"allLowercasePlural": lowercaseNamer,
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"resource": codegennamer.NewTagOverrideNamer("resourceName", lowercaseNamer),
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}
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}
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// ExceptionNamer allows you specify exceptional cases with exact names. This allows you to have control
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// for handling various conflicts, like group and resource names for instance.
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type ExceptionNamer struct {
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Exceptions map[string]string
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KeyFunc func(*types.Type) string
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Delegate namer.Namer
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}
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// Name provides the requested name for a type.
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func (n *ExceptionNamer) Name(t *types.Type) string {
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key := n.KeyFunc(t)
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if exception, ok := n.Exceptions[key]; ok {
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return exception
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}
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return n.Delegate.Name(t)
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}
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// DefaultNameSystem returns the default name system for ordering the types to be
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// processed by the generators in this package.
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func DefaultNameSystem() string {
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return "public"
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}
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2021-05-15 10:08:31 +00:00
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func packageForGroup(gv clientgentypes.GroupVersion, typeList []*types.Type, clientsetPackage string, groupPackageName string, groupGoName string, apiPath string, srcTreePath string, inputPackage string, applyBuilderPackage string, boilerplate []byte) generator.Package {
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groupVersionClientPackage := filepath.Join(clientsetPackage, "typed", strings.ToLower(groupPackageName), strings.ToLower(gv.Version.NonEmpty()))
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return &generator.DefaultPackage{
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PackageName: strings.ToLower(gv.Version.NonEmpty()),
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PackagePath: groupVersionClientPackage,
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HeaderText: boilerplate,
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PackageDocumentation: []byte(
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`// This package has the automatically generated typed clients.
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`),
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// GeneratorFunc returns a list of generators. Each generator makes a
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// single file.
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GeneratorFunc: func(c *generator.Context) (generators []generator.Generator) {
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generators = []generator.Generator{
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// Always generate a "doc.go" file.
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generator.DefaultGen{OptionalName: "doc"},
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}
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// Since we want a file per type that we generate a client for, we
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// have to provide a function for this.
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for _, t := range typeList {
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generators = append(generators, &genClientForType{
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DefaultGen: generator.DefaultGen{
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OptionalName: strings.ToLower(c.Namers["private"].Name(t)),
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},
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outputPackage: groupVersionClientPackage,
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inputPackage: inputPackage,
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clientsetPackage: clientsetPackage,
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applyConfigurationPackage: applyBuilderPackage,
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group: gv.Group.NonEmpty(),
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version: gv.Version.String(),
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groupGoName: groupGoName,
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typeToMatch: t,
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imports: generator.NewImportTracker(),
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})
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}
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generators = append(generators, &genGroup{
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DefaultGen: generator.DefaultGen{
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OptionalName: groupPackageName + "_client",
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},
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outputPackage: groupVersionClientPackage,
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inputPackage: inputPackage,
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clientsetPackage: clientsetPackage,
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group: gv.Group.NonEmpty(),
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version: gv.Version.String(),
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groupGoName: groupGoName,
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apiPath: apiPath,
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types: typeList,
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imports: generator.NewImportTracker(),
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})
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expansionFileName := "generated_expansion"
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generators = append(generators, &genExpansion{
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groupPackagePath: filepath.Join(srcTreePath, groupVersionClientPackage),
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DefaultGen: generator.DefaultGen{
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OptionalName: expansionFileName,
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},
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types: typeList,
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})
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return generators
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},
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FilterFunc: func(c *generator.Context, t *types.Type) bool {
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return util.MustParseClientGenTags(append(t.SecondClosestCommentLines, t.CommentLines...)).GenerateClient
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},
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}
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}
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func packageForClientset(customArgs *clientgenargs.CustomArgs, clientsetPackage string, groupGoNames map[clientgentypes.GroupVersion]string, boilerplate []byte) generator.Package {
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return &generator.DefaultPackage{
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PackageName: customArgs.ClientsetName,
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PackagePath: clientsetPackage,
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HeaderText: boilerplate,
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PackageDocumentation: []byte(
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`// This package has the automatically generated clientset.
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`),
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// GeneratorFunc returns a list of generators. Each generator generates a
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// single file.
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GeneratorFunc: func(c *generator.Context) (generators []generator.Generator) {
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generators = []generator.Generator{
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// Always generate a "doc.go" file.
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generator.DefaultGen{OptionalName: "doc"},
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&genClientset{
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DefaultGen: generator.DefaultGen{
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OptionalName: "clientset",
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},
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groups: customArgs.Groups,
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groupGoNames: groupGoNames,
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clientsetPackage: clientsetPackage,
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outputPackage: customArgs.ClientsetName,
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imports: generator.NewImportTracker(),
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},
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}
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return generators
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},
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}
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}
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func packageForScheme(customArgs *clientgenargs.CustomArgs, clientsetPackage string, srcTreePath string, groupGoNames map[clientgentypes.GroupVersion]string, boilerplate []byte) generator.Package {
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schemePackage := filepath.Join(clientsetPackage, "scheme")
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// create runtime.Registry for internal client because it has to know about group versions
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internalClient := false
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NextGroup:
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for _, group := range customArgs.Groups {
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for _, v := range group.Versions {
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if v.String() == "" {
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internalClient = true
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break NextGroup
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}
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}
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}
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return &generator.DefaultPackage{
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PackageName: "scheme",
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PackagePath: schemePackage,
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HeaderText: boilerplate,
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PackageDocumentation: []byte(
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`// This package contains the scheme of the automatically generated clientset.
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`),
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// GeneratorFunc returns a list of generators. Each generator generates a
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// single file.
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GeneratorFunc: func(c *generator.Context) (generators []generator.Generator) {
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generators = []generator.Generator{
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// Always generate a "doc.go" file.
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generator.DefaultGen{OptionalName: "doc"},
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&scheme.GenScheme{
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DefaultGen: generator.DefaultGen{
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OptionalName: "register",
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},
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InputPackages: customArgs.GroupVersionPackages(),
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OutputPackage: schemePackage,
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OutputPath: filepath.Join(srcTreePath, schemePackage),
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Groups: customArgs.Groups,
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GroupGoNames: groupGoNames,
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ImportTracker: generator.NewImportTracker(),
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CreateRegistry: internalClient,
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},
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}
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return generators
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},
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}
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}
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// applyGroupOverrides applies group name overrides to each package, if applicable. If there is a
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// comment of the form "// +groupName=somegroup" or "// +groupName=somegroup.foo.bar.io", use the
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// first field (somegroup) as the name of the group in Go code, e.g. as the func name in a clientset.
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//
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// If the first field of the groupName is not unique within the clientset, use "// +groupName=unique
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func applyGroupOverrides(universe types.Universe, customArgs *clientgenargs.CustomArgs) {
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// Create a map from "old GV" to "new GV" so we know what changes we need to make.
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changes := make(map[clientgentypes.GroupVersion]clientgentypes.GroupVersion)
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for gv, inputDir := range customArgs.GroupVersionPackages() {
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p := universe.Package(genutil.Vendorless(inputDir))
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if override := types.ExtractCommentTags("+", p.Comments)["groupName"]; override != nil {
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newGV := clientgentypes.GroupVersion{
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Group: clientgentypes.Group(override[0]),
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Version: gv.Version,
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}
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changes[gv] = newGV
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}
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}
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// Modify customArgs.Groups based on the groupName overrides.
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newGroups := make([]clientgentypes.GroupVersions, 0, len(customArgs.Groups))
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for _, gvs := range customArgs.Groups {
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gv := clientgentypes.GroupVersion{
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Group: gvs.Group,
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Version: gvs.Versions[0].Version, // we only need a version, and the first will do
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}
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if newGV, ok := changes[gv]; ok {
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// There's an override, so use it.
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newGVS := clientgentypes.GroupVersions{
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PackageName: gvs.PackageName,
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Group: newGV.Group,
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Versions: gvs.Versions,
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}
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newGroups = append(newGroups, newGVS)
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} else {
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// No override.
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newGroups = append(newGroups, gvs)
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}
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}
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customArgs.Groups = newGroups
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}
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// Packages makes the client package definition.
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func Packages(context *generator.Context, arguments *args.GeneratorArgs) generator.Packages {
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boilerplate, err := arguments.LoadGoBoilerplate()
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if err != nil {
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klog.Fatalf("Failed loading boilerplate: %v", err)
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}
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customArgs, ok := arguments.CustomArgs.(*clientgenargs.CustomArgs)
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if !ok {
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klog.Fatalf("cannot convert arguments.CustomArgs to clientgenargs.CustomArgs")
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}
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includedTypesOverrides := customArgs.IncludedTypesOverrides
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applyGroupOverrides(context.Universe, customArgs)
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gvToTypes := map[clientgentypes.GroupVersion][]*types.Type{}
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groupGoNames := make(map[clientgentypes.GroupVersion]string)
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for gv, inputDir := range customArgs.GroupVersionPackages() {
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p := context.Universe.Package(path.Vendorless(inputDir))
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// If there's a comment of the form "// +groupGoName=SomeUniqueShortName", use that as
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// the Go group identifier in CamelCase. It defaults
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groupGoNames[gv] = namer.IC(strings.Split(gv.Group.NonEmpty(), ".")[0])
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if override := types.ExtractCommentTags("+", p.Comments)["groupGoName"]; override != nil {
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groupGoNames[gv] = namer.IC(override[0])
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}
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// Package are indexed with the vendor prefix stripped
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|
for n, t := range p.Types {
|
|
|
|
// filter out types which are not included in user specified overrides.
|
|
|
|
typesOverride, ok := includedTypesOverrides[gv]
|
|
|
|
if ok {
|
|
|
|
found := false
|
|
|
|
for _, typeStr := range typesOverride {
|
|
|
|
if typeStr == n {
|
|
|
|
found = true
|
|
|
|
break
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if !found {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// User has not specified any override for this group version.
|
|
|
|
// filter out types which dont have genclient.
|
|
|
|
if tags := util.MustParseClientGenTags(append(t.SecondClosestCommentLines, t.CommentLines...)); !tags.GenerateClient {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if _, found := gvToTypes[gv]; !found {
|
|
|
|
gvToTypes[gv] = []*types.Type{}
|
|
|
|
}
|
|
|
|
gvToTypes[gv] = append(gvToTypes[gv], t)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
var packageList []generator.Package
|
|
|
|
clientsetPackage := filepath.Join(arguments.OutputPackagePath, customArgs.ClientsetName)
|
|
|
|
|
|
|
|
packageList = append(packageList, packageForClientset(customArgs, clientsetPackage, groupGoNames, boilerplate))
|
|
|
|
packageList = append(packageList, packageForScheme(customArgs, clientsetPackage, arguments.OutputBase, groupGoNames, boilerplate))
|
|
|
|
if customArgs.FakeClient {
|
|
|
|
packageList = append(packageList, fake.PackageForClientset(customArgs, clientsetPackage, groupGoNames, boilerplate))
|
|
|
|
}
|
|
|
|
|
|
|
|
// If --clientset-only=true, we don't regenerate the individual typed clients.
|
|
|
|
if customArgs.ClientsetOnly {
|
|
|
|
return generator.Packages(packageList)
|
|
|
|
}
|
|
|
|
|
|
|
|
orderer := namer.Orderer{Namer: namer.NewPrivateNamer(0)}
|
|
|
|
gvPackages := customArgs.GroupVersionPackages()
|
|
|
|
for _, group := range customArgs.Groups {
|
|
|
|
for _, version := range group.Versions {
|
|
|
|
gv := clientgentypes.GroupVersion{Group: group.Group, Version: version.Version}
|
|
|
|
types := gvToTypes[gv]
|
|
|
|
inputPath := gvPackages[gv]
|
2021-05-15 10:08:31 +00:00
|
|
|
packageList = append(packageList, packageForGroup(gv, orderer.OrderTypes(types), clientsetPackage, group.PackageName, groupGoNames[gv], customArgs.ClientsetAPIPath, arguments.OutputBase, inputPath, customArgs.ApplyConfigurationPackage, boilerplate))
|
2019-05-16 22:23:05 +00:00
|
|
|
if customArgs.FakeClient {
|
2021-05-15 10:08:31 +00:00
|
|
|
packageList = append(packageList, fake.PackageForGroup(gv, orderer.OrderTypes(types), clientsetPackage, group.PackageName, groupGoNames[gv], inputPath, customArgs.ApplyConfigurationPackage, boilerplate))
|
2019-05-16 22:23:05 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return generator.Packages(packageList)
|
|
|
|
}
|