/
kubernetes.go
109 lines (89 loc) · 3.09 KB
/
kubernetes.go
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// Copyright 2019 The Kubernetes 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 utils
import (
"io/ioutil"
"reflect"
"github.com/ghodss/yaml"
crdv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
crdclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/client-go/rest"
"k8s.io/klog"
)
// ConvertLabels coverts label selector to lables.Selector
func ConvertLabels(labelSelector *metav1.LabelSelector) (labels.Selector, error) {
if klog.V(QuiteLogLel) {
fnName := GetFnName()
klog.Infof("Entering: %v()", fnName)
defer klog.Infof("Exiting: %v()", fnName)
}
if labelSelector != nil {
selector, err := metav1.LabelSelectorAsSelector(labelSelector)
if err != nil {
return labels.Nothing(), err
}
return selector, nil
}
return labels.Everything(), nil
}
// CheckAndInstallCRD checks if deployable belongs to this cluster
// managed cluster annotation matches or no managed cluster annotation (local)
func CheckAndInstallCRD(crdconfig *rest.Config, pathname string) error {
var err error
crdClient, err := crdclientset.NewForConfig(crdconfig)
if err != nil {
klog.Fatalf("Error building cluster registry clientset: %s", err.Error())
return err
}
var crdobj crdv1beta1.CustomResourceDefinition
var crddata []byte
crddata, err = ioutil.ReadFile(pathname)
if err != nil {
klog.Fatal("Loading app crd file", err.Error())
return err
}
err = yaml.Unmarshal(crddata, &crdobj)
if err != nil {
klog.Fatal("Unmarshal app crd ", err.Error(), "\n", string(crddata))
return err
}
klog.V(10).Info("Loaded Application CRD: ", crdobj, "\n - From - \n", string(crddata))
crd, err := crdClient.ApiextensionsV1beta1().CustomResourceDefinitions().Get(crdobj.GetName(), metav1.GetOptions{})
if errors.IsNotFound(err) {
klog.Info("Installing SIG Application CRD from File: ", pathname)
// Install sig app
_, err = crdClient.ApiextensionsV1beta1().CustomResourceDefinitions().Create(&crdobj)
if err != nil {
klog.Fatal("Creating CRD", err.Error())
return err
}
} else {
if !reflect.DeepEqual(crd.Spec, crdobj.Spec) {
klog.Info("CRD ", crdobj.GetName(), " is being updated with ", pathname)
crdobj.Spec.DeepCopyInto(&crd.Spec)
_, err = crdClient.ApiextensionsV1beta1().CustomResourceDefinitions().Update(crd)
if err != nil {
klog.Fatal("Updating CRD", err.Error())
return err
}
} else {
klog.Info("CRD ", crdobj.GetName(), " exists: ", pathname)
}
return err
}
return err
}