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init controller-gen support for oneOf and not (kyverno#10776)
Signed-off-by: Frank Jogeleit <frank.jogeleit@web.de> Co-authored-by: Charles-Edouard Brétéché <charles.edouard@nirmata.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/spf13/cobra" | ||
| "sigs.k8s.io/controller-tools/pkg/crd" | ||
| "sigs.k8s.io/controller-tools/pkg/genall" | ||
| "sigs.k8s.io/controller-tools/pkg/markers" | ||
| ) | ||
|
|
||
| var ( | ||
| allGenerators = map[string]genall.Generator{ | ||
| "crd": crd.Generator{}, | ||
| } | ||
| allOutputRules = map[string]genall.OutputRule{ | ||
| "dir": genall.OutputToDirectory(""), | ||
| "none": genall.OutputToNothing, | ||
| "stdout": genall.OutputToStdout, | ||
| "artifacts": genall.OutputArtifacts{}, | ||
| } | ||
| optionsRegistry = &markers.Registry{} | ||
| ) | ||
|
|
||
| func init() { //nolint:gochecknoinits | ||
| for genName, gen := range allGenerators { | ||
| // make the generator options marker itself | ||
| defn := markers.Must(markers.MakeDefinition(genName, markers.DescribesPackage, gen)) | ||
| if err := optionsRegistry.Register(defn); err != nil { | ||
| panic(err) | ||
| } | ||
| if helpGiver, hasHelp := gen.(genall.HasHelp); hasHelp { | ||
| if help := helpGiver.Help(); help != nil { | ||
| optionsRegistry.AddHelp(defn, help) | ||
| } | ||
| } | ||
| // make per-generation output rule markers | ||
| for ruleName, rule := range allOutputRules { | ||
| ruleMarker := markers.Must(markers.MakeDefinition(fmt.Sprintf("output:%s:%s", genName, ruleName), markers.DescribesPackage, rule)) | ||
| if err := optionsRegistry.Register(ruleMarker); err != nil { | ||
| panic(err) | ||
| } | ||
| if helpGiver, hasHelp := rule.(genall.HasHelp); hasHelp { | ||
| if help := helpGiver.Help(); help != nil { | ||
| optionsRegistry.AddHelp(ruleMarker, help) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| // make "default output" output rule markers | ||
| for ruleName, rule := range allOutputRules { | ||
| ruleMarker := markers.Must(markers.MakeDefinition("output:"+ruleName, markers.DescribesPackage, rule)) | ||
| if err := optionsRegistry.Register(ruleMarker); err != nil { | ||
| panic(err) | ||
| } | ||
| if helpGiver, hasHelp := rule.(genall.HasHelp); hasHelp { | ||
| if help := helpGiver.Help(); help != nil { | ||
| optionsRegistry.AddHelp(ruleMarker, help) | ||
| } | ||
| } | ||
| } | ||
| // add in the common options markers | ||
| if err := genall.RegisterOptionsMarkers(optionsRegistry); err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
|
|
||
| type noUsageError struct{ error } | ||
|
|
||
| func main() { | ||
| cmd := &cobra.Command{ | ||
| Use: "controller-gen", | ||
| RunE: func(c *cobra.Command, rawOpts []string) error { | ||
| oneOf, err := markers.MakeAnyTypeDefinition("kubebuilder:oneOf", markers.DescribesType, OneOf{}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| not, err := markers.MakeAnyTypeDefinition("kubebuilder:not", markers.DescribesType, Not{}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // otherwise, set up the runtime for actually running the generators | ||
| rt, err := genall.FromOptions(optionsRegistry, rawOpts) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if err := rt.Collector.Registry.Register(oneOf); err != nil { | ||
| return err | ||
| } | ||
| if err := rt.Collector.Registry.Register(not); err != nil { | ||
| return err | ||
| } | ||
| if len(rt.Generators) == 0 { | ||
| return fmt.Errorf("no generators specified") | ||
| } | ||
| if hadErrs := rt.Run(); hadErrs { | ||
| // don't obscure the actual error with a bunch of usage | ||
| return noUsageError{fmt.Errorf("not all generators ran successfully")} | ||
| } | ||
| return nil | ||
| }, | ||
| SilenceUsage: true, // silence the usage, then print it out ourselves if it wasn't suppressed | ||
| } | ||
| if err := cmd.Execute(); err != nil { | ||
| if _, noUsage := err.(noUsageError); !noUsage { | ||
| // print the usage unless we suppressed it | ||
| if err := cmd.Usage(); err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
| fmt.Fprintf(cmd.OutOrStderr(), "run `%[1]s %[2]s -w` to see all available markers, or `%[1]s %[2]s -h` for usage\n", cmd.CalledAs(), strings.Join(os.Args[1:], " ")) | ||
| os.Exit(1) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
|
|
||
| apiext "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" | ||
| ) | ||
|
|
||
| type OneOf struct { | ||
| Value any | ||
| } | ||
|
|
||
| func (m OneOf) ApplyToSchema(schema *apiext.JSONSchemaProps) error { | ||
| var props apiext.JSONSchemaProps | ||
| if data, err := json.Marshal(m.Value); err != nil { | ||
| return err | ||
| } else if err := json.Unmarshal(data, &props); err != nil { | ||
| return err | ||
| } | ||
| schema.OneOf = append(schema.OneOf, props) | ||
| return nil | ||
| } | ||
|
|
||
| type Not struct { | ||
| Value any | ||
| } | ||
|
|
||
| func (m Not) ApplyToSchema(schema *apiext.JSONSchemaProps) error { | ||
| var props apiext.JSONSchemaProps | ||
| if data, err := json.Marshal(m.Value); err != nil { | ||
| return err | ||
| } else if err := json.Unmarshal(data, &props); err != nil { | ||
| return err | ||
| } | ||
| schema.Not = &props | ||
| return nil | ||
| } |