119 lines
3.6 KiB
Go
119 lines
3.6 KiB
Go
/*
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Copyright 2016 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
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import (
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"io"
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"path/filepath"
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"strings"
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clientgentypes "k8s.io/code-generator/cmd/client-gen/types"
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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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)
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// groupInterfaceGenerator generates the per-group interface file.
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type groupInterfaceGenerator struct {
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generator.DefaultGen
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outputPackage string
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imports namer.ImportTracker
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groupVersions clientgentypes.GroupVersions
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filtered bool
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internalInterfacesPackage string
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}
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var _ generator.Generator = &groupInterfaceGenerator{}
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func (g *groupInterfaceGenerator) Filter(c *generator.Context, t *types.Type) bool {
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if !g.filtered {
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g.filtered = true
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return true
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}
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return false
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}
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func (g *groupInterfaceGenerator) Namers(c *generator.Context) namer.NameSystems {
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return namer.NameSystems{
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"raw": namer.NewRawNamer(g.outputPackage, g.imports),
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}
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}
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func (g *groupInterfaceGenerator) Imports(c *generator.Context) (imports []string) {
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imports = append(imports, g.imports.ImportLines()...)
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return
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}
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type versionData struct {
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Name string
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Interface *types.Type
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New *types.Type
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}
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func (g *groupInterfaceGenerator) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
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sw := generator.NewSnippetWriter(w, c, "$", "$")
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versions := make([]versionData, 0, len(g.groupVersions.Versions))
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for _, version := range g.groupVersions.Versions {
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gv := clientgentypes.GroupVersion{Group: g.groupVersions.Group, Version: version.Version}
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versionPackage := filepath.Join(g.outputPackage, strings.ToLower(gv.Version.NonEmpty()))
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iface := c.Universe.Type(types.Name{Package: versionPackage, Name: "Interface"})
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versions = append(versions, versionData{
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Name: namer.IC(version.Version.NonEmpty()),
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Interface: iface,
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New: c.Universe.Function(types.Name{Package: versionPackage, Name: "New"}),
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})
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}
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m := map[string]interface{}{
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"interfacesTweakListOptionsFunc": c.Universe.Type(types.Name{Package: g.internalInterfacesPackage, Name: "TweakListOptionsFunc"}),
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"interfacesSharedInformerFactory": c.Universe.Type(types.Name{Package: g.internalInterfacesPackage, Name: "SharedInformerFactory"}),
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"versions": versions,
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}
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sw.Do(groupTemplate, m)
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return sw.Error()
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}
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var groupTemplate = `
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// Interface provides access to each of this group's versions.
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type Interface interface {
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$range .versions -$
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// $.Name$ provides access to shared informers for resources in $.Name$.
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$.Name$() $.Interface|raw$
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$end$
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}
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type group struct {
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factory $.interfacesSharedInformerFactory|raw$
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namespace string
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tweakListOptions $.interfacesTweakListOptionsFunc|raw$
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}
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// New returns a new Interface.
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func New(f $.interfacesSharedInformerFactory|raw$, namespace string, tweakListOptions $.interfacesTweakListOptionsFunc|raw$) Interface {
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return &group{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
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}
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$range .versions$
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// $.Name$ returns a new $.Interface|raw$.
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func (g *group) $.Name$() $.Interface|raw$ {
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return $.New|raw$(g.factory, g.namespace, g.tweakListOptions)
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}
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$end$
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`
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