/
crd.go
226 lines (186 loc) · 6.17 KB
/
crd.go
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package cmd
import (
"fmt"
"io/fs"
"io/ioutil"
"os"
"path/filepath"
"github.com/davecgh/go-spew/spew"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"github.com/urfave/cli/v2"
"sigs.k8s.io/controller-tools/pkg/crd"
"sigs.k8s.io/controller-tools/pkg/deepcopy"
"sigs.k8s.io/controller-tools/pkg/genall"
"sigs.k8s.io/controller-tools/pkg/markers"
"sigs.k8s.io/controller-tools/pkg/rbac"
"sigs.k8s.io/controller-tools/pkg/schemapatcher"
"sigs.k8s.io/controller-tools/pkg/webhook"
"sigs.k8s.io/yaml"
)
var (
optionsRegistry = &markers.Registry{}
)
type GenerateCrdOption struct {
CrdOptions []string
SchemaPatchOptions []string
ClaimName string
ClaimNamePlural string
}
func init() {
allGenerators := map[string]genall.Generator{
"crd": crd.Generator{},
"rbac": rbac.Generator{},
"object": deepcopy.Generator{},
"webhook": webhook.Generator{},
"schemapatch": schemapatcher.Generator{},
}
// allOutputRules defines the list of all known output rules, giving
// them names for use on the command line.
// Each output rule turns into two command line options:
// - output:<generator>:<form> (per-generator output)
// - output:<form> (default output)
allOutputRules := map[string]genall.OutputRule{
"dir": genall.OutputToDirectory(""),
"none": genall.OutputToNothing,
"stdout": genall.OutputToStdout,
"artifacts": genall.OutputArtifacts{},
}
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)
}
}
func GenerateCRD(c *cli.Context) error {
options := GenerateCrdOption{
CrdOptions: c.StringSlice("crd-options"),
SchemaPatchOptions: c.StringSlice("schemapatch-options"),
ClaimName: c.String("claim-name"),
ClaimNamePlural: c.String("claim-plural-name"),
}
return generateCRD(c.String("source-path"), c.String("target-path"), options)
}
func generateCRD(sourcePath string, targetPath string, options GenerateCrdOption) (err error) {
// Create temporary folder to generate initial CRD with gen-controller
tmpPath, err := ioutil.TempDir("", "crossplaneG")
if err != nil {
panic(err)
}
defer os.RemoveAll(tmpPath)
opts := []string{
fmt.Sprintf("paths=\"%s\"", sourcePath),
fmt.Sprintf("output:crd:artifacts:config=\"%s\"", tmpPath),
}
if len(options.CrdOptions) > 0 {
for _, crdOption := range options.CrdOptions {
opts = append(opts, fmt.Sprintf("crd:%s", crdOption))
}
} else {
opts = append(opts, "crd")
}
for _, schemaPatchOption := range options.SchemaPatchOptions {
opts = append(opts, fmt.Sprintf("schemapatch:%s", schemaPatchOption))
}
log.Debugf("Options: %s", spew.Sdump(opts))
rt, err := genall.FromOptions(optionsRegistry, opts)
if err != nil {
return errors.Wrap(err, "Error when init controller-gen with options that you provide")
}
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 errors.New("not all generators ran successfully")
}
log.Debug("CRD generated with controller-gen")
// Loop over all generated CRD to clean them
filepath.Walk(tmpPath, func(path string, info fs.FileInfo, err error) error {
if err != nil {
return errors.Wrapf(err, "Error when open file %s", info.Name())
}
if info.IsDir() {
return nil
}
log.Debugf("Process file %s", info.Name())
// Read and convert file to map
f, err := os.ReadFile(path)
if err != nil {
return errors.Wrapf(err, "Error when read file %s", path)
}
obj := map[string]any{}
if err = yaml.Unmarshal(f, &obj); err != nil {
return errors.Wrapf(err, "Error when convert file %s to map", path)
}
// Clean map and write final file
obj["apiVersion"] = "apiextensions.crossplane.io/v1"
obj["kind"] = "CompositeResourceDefinition"
delete(obj["metadata"].(map[string]any), "creationTimestamp")
delete(obj["metadata"].(map[string]any), "annotations")
delete(obj["spec"].(map[string]any), "scope")
spec := obj["spec"].(map[string]any)
if options.ClaimName != "" {
m := map[string]any{
"kind": options.ClaimName,
}
if options.ClaimNamePlural != "" {
m["plural"] = options.ClaimNamePlural
}
spec["claimNames"] = m
}
for i, version := range spec["versions"].([]any) {
version := version.(map[string]any)
delete(version, "storage")
version["referenceable"] = true
p := version["schema"].(map[string]any)["openAPIV3Schema"].(map[string]any)["properties"].(map[string]any)
delete(p, "apiVersion")
delete(p, "kind")
delete(p, "metadata")
spec["versions"].([]any)[i] = version
}
// Write final file
data, err := yaml.Marshal(obj)
if err != nil {
return errors.Wrap(err, "Error when convert object to Yaml")
}
os.WriteFile(fmt.Sprintf("%s/%s", targetPath, info.Name()), data, 0644)
return nil
})
return nil
}