forked from knative/pkg
/
fakefactory.go
105 lines (85 loc) · 3.72 KB
/
fakefactory.go
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/*
Copyright 2019 The Kubernetes Authors.
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 generators
import (
"io"
"k8s.io/gengo/generator"
"k8s.io/gengo/namer"
"k8s.io/gengo/types"
"k8s.io/klog"
)
// fakeFactoryGenerator produces a file of listers for a given GroupVersion and
// type.
type fakeFactoryGenerator struct {
generator.DefaultGen
outputPackage string
imports namer.ImportTracker
filtered bool
factoryInjectionPkg string
fakeClientInjectionPkg string
sharedInformerFactoryPackage string
}
var _ generator.Generator = (*fakeFactoryGenerator)(nil)
func (g *fakeFactoryGenerator) Filter(c *generator.Context, t *types.Type) bool {
// We generate a single factory, so return true once.
if !g.filtered {
g.filtered = true
return true
}
return false
}
func (g *fakeFactoryGenerator) Namers(c *generator.Context) namer.NameSystems {
return namer.NameSystems{
"raw": namer.NewRawNamer(g.outputPackage, g.imports),
}
}
func (g *fakeFactoryGenerator) Imports(c *generator.Context) (imports []string) {
imports = append(imports, g.imports.ImportLines()...)
return
}
func (g *fakeFactoryGenerator) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
sw := generator.NewSnippetWriter(w, c, "{{", "}}")
klog.V(5).Infof("processing type %v", t)
m := map[string]interface{}{
"factoryKey": c.Universe.Type(types.Name{Package: g.factoryInjectionPkg, Name: "Key"}),
"factoryGet": c.Universe.Function(types.Name{Package: g.factoryInjectionPkg, Name: "Get"}),
"clientGet": c.Universe.Function(types.Name{Package: g.fakeClientInjectionPkg, Name: "Get"}),
"informersNewSharedInformerFactoryWithOptions": c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "NewSharedInformerFactoryWithOptions"}),
"informersSharedInformerOption": c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "SharedInformerOption"}),
"informersWithNamespace": c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "WithNamespace"}),
"injectionRegisterInformerFactory": c.Universe.Function(types.Name{
Package: "knative.dev/pkg/injection",
Name: "Fake.RegisterInformerFactory",
}),
"injectionHasNamespace": c.Universe.Type(types.Name{Package: "knative.dev/pkg/injection", Name: "HasNamespaceScope"}),
"injectionGetNamespace": c.Universe.Type(types.Name{Package: "knative.dev/pkg/injection", Name: "GetNamespaceScope"}),
"controllerGetResyncPeriod": c.Universe.Type(types.Name{Package: "knative.dev/pkg/controller", Name: "GetResyncPeriod"}),
}
sw.Do(injectionFakeInformerFactory, m)
return sw.Error()
}
var injectionFakeInformerFactory = `
var Get = {{.factoryGet|raw}}
func init() {
{{.injectionRegisterInformerFactory|raw}}(withInformerFactory)
}
func withInformerFactory(ctx context.Context) context.Context {
c := {{.clientGet|raw}}(ctx)
opts := make([]{{.informersSharedInformerOption|raw}}, 0, 1)
if {{.injectionHasNamespace|raw}}(ctx) {
opts = append(opts, {{.informersWithNamespace|raw}}({{.injectionGetNamespace|raw}}(ctx)))
}
return context.WithValue(ctx, {{.factoryKey|raw}}{},
{{.informersNewSharedInformerFactoryWithOptions|raw}}(c, {{.controllerGetResyncPeriod|raw}}(ctx), opts...))
}
`