/
tables.go
75 lines (61 loc) · 2.42 KB
/
tables.go
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package installer
import (
"bytes"
"context"
_ "embed"
"github.com/pkg/errors"
"github.com/schemahero/schemahero/pkg/client/schemaheroclientset/scheme"
extensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
extensionsscheme "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/scheme"
extensionsv1client "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset/typed/apiextensions/v1"
kuberneteserrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
"k8s.io/client-go/rest"
)
//go:embed assets/schemas.schemahero.io_tables.yaml
var generatedTableCRDV1 string
func tablesCRDYAML() ([]byte, error) {
s := json.NewYAMLSerializer(json.DefaultMetaFactory, scheme.Scheme, scheme.Scheme)
var result bytes.Buffer
if err := s.Encode(tablesCRDV1(), &result); err != nil {
return nil, errors.Wrap(err, "failed to marshal tables v1 crd")
}
return result.Bytes(), nil
}
func ensureTablesCRD(ctx context.Context, cfg *rest.Config) error {
extensionsClient, err := extensionsv1client.NewForConfig(cfg)
if err != nil {
return errors.Wrap(err, "faild to create extensions client")
}
existingCRD, err := extensionsClient.CustomResourceDefinitions().Get(ctx, "tables.schemas.schemahero.io", metav1.GetOptions{})
// if there's an error and it's not a NotFound error, that's unexpected and we cannot continue
if err != nil && !kuberneteserrors.IsNotFound(err) {
return errors.Wrap(err, "get tables crd")
}
if kuberneteserrors.IsNotFound(err) {
_, err := extensionsClient.CustomResourceDefinitions().Create(ctx, tablesCRDV1(), metav1.CreateOptions{})
if err != nil {
return errors.Wrap(err, "failed to create tables crd")
}
return nil
}
// update the existing object with the new
existingCRD.Spec = tablesCRDV1().Spec
existingCRD.Labels = tablesCRDV1().Labels
existingCRD.Annotations = tablesCRDV1().Annotations
_, err = extensionsClient.CustomResourceDefinitions().Update(ctx, existingCRD, metav1.UpdateOptions{})
if err != nil {
return errors.Wrap(err, "update tables crd")
}
return nil
}
func tablesCRDV1() *extensionsv1.CustomResourceDefinition {
extensionsscheme.AddToScheme(scheme.Scheme)
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, _, err := decode([]byte(generatedTableCRDV1), nil, nil)
if err != nil {
panic(err) // todo
}
return obj.(*extensionsv1.CustomResourceDefinition)
}