|
| 1 | +/* |
| 2 | +Copyright 2025 The Kubernetes 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 main |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + "log" |
| 22 | + "os" |
| 23 | + |
| 24 | + apiext "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" |
| 25 | + "sigs.k8s.io/controller-tools/pkg/crd" |
| 26 | + "sigs.k8s.io/controller-tools/pkg/loader" |
| 27 | + "sigs.k8s.io/controller-tools/pkg/markers" |
| 28 | + "sigs.k8s.io/gateway-api-inference-extension/version" |
| 29 | + "sigs.k8s.io/yaml" |
| 30 | +) |
| 31 | + |
| 32 | +// This generation code is largely copied from |
| 33 | +// github.com/kubernetes-sigs/gateway-api/blob/main/pkg/generator/main.go |
| 34 | +func main() { |
| 35 | + roots, err := loader.LoadRoots( |
| 36 | + "k8s.io/apimachinery/pkg/runtime/schema", // Needed to parse generated register functions. |
| 37 | + "sigs.k8s.io/gateway-api-inference-extension/api/v1alpha2", |
| 38 | + ) |
| 39 | + if err != nil { |
| 40 | + log.Fatalf("failed to load package roots: %s", err) |
| 41 | + } |
| 42 | + |
| 43 | + generator := &crd.Generator{} |
| 44 | + |
| 45 | + parser := &crd.Parser{ |
| 46 | + Collector: &markers.Collector{Registry: &markers.Registry{}}, |
| 47 | + Checker: &loader.TypeChecker{ |
| 48 | + NodeFilters: []loader.NodeFilter{generator.CheckFilter()}, |
| 49 | + }, |
| 50 | + } |
| 51 | + |
| 52 | + err = generator.RegisterMarkers(parser.Collector.Registry) |
| 53 | + if err != nil { |
| 54 | + log.Fatalf("failed to register markers: %s", err) |
| 55 | + } |
| 56 | + |
| 57 | + crd.AddKnownTypes(parser) |
| 58 | + for _, r := range roots { |
| 59 | + parser.NeedPackage(r) |
| 60 | + } |
| 61 | + |
| 62 | + metav1Pkg := crd.FindMetav1(roots) |
| 63 | + if metav1Pkg == nil { |
| 64 | + log.Fatalf("no objects in the roots, since nothing imported metav1") |
| 65 | + } |
| 66 | + |
| 67 | + kubeKinds := crd.FindKubeKinds(parser, metav1Pkg) |
| 68 | + if len(kubeKinds) == 0 { |
| 69 | + log.Fatalf("no objects in the roots") |
| 70 | + } |
| 71 | + |
| 72 | + for _, groupKind := range kubeKinds { |
| 73 | + |
| 74 | + log.Printf("generating CRD for %v\n", groupKind) |
| 75 | + |
| 76 | + parser.NeedCRDFor(groupKind, nil) |
| 77 | + crdRaw := parser.CustomResourceDefinitions[groupKind] |
| 78 | + |
| 79 | + // Inline version of "addAttribution(&crdRaw)" ... |
| 80 | + if crdRaw.ObjectMeta.Annotations == nil { |
| 81 | + crdRaw.ObjectMeta.Annotations = map[string]string{} |
| 82 | + } |
| 83 | + crdRaw.ObjectMeta.Annotations[version.BundleVersionAnnotation] = version.BundleVersion |
| 84 | + |
| 85 | + // Prevent the top level metadata for the CRD to be generated regardless of the intention in the arguments |
| 86 | + crd.FixTopLevelMetadata(crdRaw) |
| 87 | + |
| 88 | + conv, err := crd.AsVersion(*crdRaw.DeepCopy(), apiext.SchemeGroupVersion) |
| 89 | + if err != nil { |
| 90 | + log.Fatalf("failed to convert CRD: %s", err) |
| 91 | + } |
| 92 | + |
| 93 | + out, err := yaml.Marshal(conv) |
| 94 | + if err != nil { |
| 95 | + log.Fatalf("failed to marshal CRD: %s", err) |
| 96 | + } |
| 97 | + |
| 98 | + fileName := fmt.Sprintf("config/crd/bases/%s_%s.yaml", crdRaw.Spec.Group, crdRaw.Spec.Names.Plural) |
| 99 | + err = os.WriteFile(fileName, out, 0o600) |
| 100 | + if err != nil { |
| 101 | + log.Fatalf("failed to write CRD: %s", err) |
| 102 | + } |
| 103 | + } |
| 104 | +} |
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