91 lines
2.8 KiB
Go
91 lines
2.8 KiB
Go
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/*
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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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"k8s.io/gengo/generator"
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"k8s.io/gengo/namer"
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"k8s.io/gengo/types"
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"k8s.io/klog"
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)
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// factoryInterfaceGenerator produces a file of interfaces used to break a dependency cycle for
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// informer registration
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type factoryInterfaceGenerator struct {
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generator.DefaultGen
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outputPackage string
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imports namer.ImportTracker
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clientSetPackage string
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filtered bool
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}
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var _ generator.Generator = &factoryInterfaceGenerator{}
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func (g *factoryInterfaceGenerator) 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 *factoryInterfaceGenerator) 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 *factoryInterfaceGenerator) 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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func (g *factoryInterfaceGenerator) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
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sw := generator.NewSnippetWriter(w, c, "{{", "}}")
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klog.V(5).Infof("processing type %v", t)
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m := map[string]interface{}{
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"cacheSharedIndexInformer": c.Universe.Type(cacheSharedIndexInformer),
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"clientSetPackage": c.Universe.Type(types.Name{Package: g.clientSetPackage, Name: "Interface"}),
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"runtimeObject": c.Universe.Type(runtimeObject),
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"timeDuration": c.Universe.Type(timeDuration),
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"v1ListOptions": c.Universe.Type(v1ListOptions),
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}
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sw.Do(externalSharedInformerFactoryInterface, m)
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return sw.Error()
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}
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var externalSharedInformerFactoryInterface = `
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// NewInformerFunc takes {{.clientSetPackage|raw}} and {{.timeDuration|raw}} to return a SharedIndexInformer.
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type NewInformerFunc func({{.clientSetPackage|raw}}, {{.timeDuration|raw}}) cache.SharedIndexInformer
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// SharedInformerFactory a small interface to allow for adding an informer without an import cycle
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type SharedInformerFactory interface {
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Start(stopCh <-chan struct{})
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InformerFor(obj {{.runtimeObject|raw}}, newFunc NewInformerFunc) {{.cacheSharedIndexInformer|raw}}
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}
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// TweakListOptionsFunc is a function that transforms a {{.v1ListOptions|raw}}.
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type TweakListOptionsFunc func(*{{.v1ListOptions|raw}})
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`
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