knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/codegen/cmd/injection-gen/generators/factory/fake_factory.go (about)

     1  /*
     2  Copyright 2019 The Knative Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package factory
    18  
    19  import (
    20  	"io"
    21  
    22  	"k8s.io/gengo/v2/generator"
    23  	"k8s.io/gengo/v2/namer"
    24  	"k8s.io/gengo/v2/types"
    25  	"k8s.io/klog/v2"
    26  )
    27  
    28  // fakeFactoryGenerator produces a file of listers for a given GroupVersion and
    29  // type.
    30  type fakeFactoryGenerator struct {
    31  	generator.GoGenerator
    32  	outputPackage string
    33  	imports       namer.ImportTracker
    34  	filtered      bool
    35  
    36  	factoryInjectionPkg          string
    37  	fakeClientInjectionPkg       string
    38  	sharedInformerFactoryPackage string
    39  }
    40  
    41  var _ generator.Generator = (*fakeFactoryGenerator)(nil)
    42  
    43  func (g *fakeFactoryGenerator) Filter(c *generator.Context, t *types.Type) bool {
    44  	// We generate a single factory, so return true once.
    45  	if !g.filtered {
    46  		g.filtered = true
    47  		return true
    48  	}
    49  	return false
    50  }
    51  
    52  func (g *fakeFactoryGenerator) Namers(c *generator.Context) namer.NameSystems {
    53  	return namer.NameSystems{
    54  		"raw": namer.NewRawNamer(g.outputPackage, g.imports),
    55  	}
    56  }
    57  
    58  func (g *fakeFactoryGenerator) Imports(c *generator.Context) (imports []string) {
    59  	imports = append(imports, g.imports.ImportLines()...)
    60  	return imports
    61  }
    62  
    63  func (g *fakeFactoryGenerator) GenerateType(c *generator.Context, t *types.Type, w io.Writer) error {
    64  	sw := generator.NewSnippetWriter(w, c, "{{", "}}")
    65  
    66  	klog.V(5).Info("processing type ", t)
    67  
    68  	m := map[string]interface{}{
    69  		"factoryKey": c.Universe.Type(types.Name{Package: g.factoryInjectionPkg, Name: "Key"}),
    70  		"factoryGet": c.Universe.Function(types.Name{Package: g.factoryInjectionPkg, Name: "Get"}),
    71  		"clientGet":  c.Universe.Function(types.Name{Package: g.fakeClientInjectionPkg, Name: "Get"}),
    72  		"informersNewSharedInformerFactoryWithOptions": c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "NewSharedInformerFactoryWithOptions"}),
    73  		"informersSharedInformerOption":                c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "SharedInformerOption"}),
    74  		"informersWithNamespace":                       c.Universe.Function(types.Name{Package: g.sharedInformerFactoryPackage, Name: "WithNamespace"}),
    75  		"injectionRegisterInformerFactory": c.Universe.Function(types.Name{
    76  			Package: "knative.dev/pkg/injection",
    77  			Name:    "Fake.RegisterInformerFactory",
    78  		}),
    79  		"injectionHasNamespace":     c.Universe.Type(types.Name{Package: "knative.dev/pkg/injection", Name: "HasNamespaceScope"}),
    80  		"injectionGetNamespace":     c.Universe.Type(types.Name{Package: "knative.dev/pkg/injection", Name: "GetNamespaceScope"}),
    81  		"controllerGetResyncPeriod": c.Universe.Type(types.Name{Package: "knative.dev/pkg/controller", Name: "GetResyncPeriod"}),
    82  		"contextContext": c.Universe.Type(types.Name{
    83  			Package: "context",
    84  			Name:    "Context",
    85  		}),
    86  	}
    87  
    88  	sw.Do(injectionFakeInformerFactory, m)
    89  
    90  	return sw.Error()
    91  }
    92  
    93  var injectionFakeInformerFactory = `
    94  var Get = {{.factoryGet|raw}}
    95  
    96  func init() {
    97  	{{.injectionRegisterInformerFactory|raw}}(withInformerFactory)
    98  }
    99  
   100  func withInformerFactory(ctx {{.contextContext|raw}}) {{.contextContext|raw}} {
   101  	c := {{.clientGet|raw}}(ctx)
   102  	opts := make([]{{.informersSharedInformerOption|raw}}, 0, 1)
   103  	if {{.injectionHasNamespace|raw}}(ctx) {
   104  		opts = append(opts, {{.informersWithNamespace|raw}}({{.injectionGetNamespace|raw}}(ctx)))
   105  	}
   106  	return context.WithValue(ctx, {{.factoryKey|raw}}{},
   107  		{{.informersNewSharedInformerFactoryWithOptions|raw}}(c, {{.controllerGetResyncPeriod|raw}}(ctx), opts...))
   108  }
   109  `