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crds.go
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crds.go
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/*
Copyright 2021 The Crossplane Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package initializer
import (
"context"
"github.com/pkg/errors"
"github.com/spf13/afero"
extv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/crossplane/crossplane-runtime/pkg/parser"
"github.com/crossplane/crossplane-runtime/pkg/resource"
)
// NewCoreCRDs returns a new *CoreCRDs.
func NewCoreCRDs(path string, s *runtime.Scheme) *CoreCRDs {
return &CoreCRDs{Path: path, Scheme: s}
}
// CoreCRDs makes sure the CRDs are installed.
type CoreCRDs struct {
Path string
Scheme *runtime.Scheme
}
// Run applies all CRDs in the given directory.
func (c *CoreCRDs) Run(ctx context.Context, kube client.Client) error {
r, err := parser.NewFsBackend(afero.NewOsFs(),
parser.FsDir(c.Path),
parser.FsFilters(
parser.SkipDirs(),
parser.SkipNotYAML(),
parser.SkipEmpty(),
),
).Init(ctx)
if err != nil {
return errors.Wrap(err, "cannot init filesystem")
}
defer func() { _ = r.Close() }()
p := parser.New(runtime.NewScheme(), c.Scheme)
pkg, err := p.Parse(ctx, r)
if err != nil {
return errors.Wrap(err, "cannot parse files")
}
pa := resource.NewAPIPatchingApplicator(kube)
for _, obj := range pkg.GetObjects() {
crd, ok := obj.(*extv1.CustomResourceDefinition)
if !ok {
return errors.New("only crds can exist in initialization directory")
}
if err := pa.Apply(ctx, crd); err != nil {
return errors.Wrap(err, "cannot apply crd")
}
}
return nil
}