Ta-Ching ChenandGitHub
574fb55fcf
To reduce maintenance effort and avoid writing duplicate informer code, use code-generator to generate clientset/informer/lister code.
118 lines
3.0 KiB
Go
118 lines
3.0 KiB
Go
/*
|
|
Copyright 2016 The Fission 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 crd
|
|
|
|
import (
|
|
"errors"
|
|
"os"
|
|
"time"
|
|
|
|
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/client-go/kubernetes"
|
|
_ "k8s.io/client-go/plugin/pkg/client/auth"
|
|
"k8s.io/client-go/rest"
|
|
"k8s.io/client-go/tools/clientcmd"
|
|
|
|
clientset "github.com/fission/fission/pkg/apis/genclient/v1/clientset/versioned"
|
|
genv1 "github.com/fission/fission/pkg/apis/genclient/v1/clientset/versioned/typed/fission.io/v1"
|
|
)
|
|
|
|
type (
|
|
FissionClient struct {
|
|
crdClient clientset.Interface
|
|
}
|
|
)
|
|
|
|
// Get a kubernetes client using the kubeconfig file at the
|
|
// environment var $KUBECONFIG, or an in-cluster config if that's
|
|
// undefined.
|
|
func GetKubernetesClient() (*rest.Config, *kubernetes.Clientset, *apiextensionsclient.Clientset, error) {
|
|
var config *rest.Config
|
|
var err error
|
|
|
|
// get the config, either from kubeconfig or using our
|
|
// in-cluster service account
|
|
kubeConfig := os.Getenv("KUBECONFIG")
|
|
if len(kubeConfig) != 0 {
|
|
config, err = clientcmd.BuildConfigFromFlags("", kubeConfig)
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
} else {
|
|
config, err = rest.InClusterConfig()
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
}
|
|
|
|
// creates the clientset
|
|
clientset, err := kubernetes.NewForConfig(config)
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
|
|
apiExtClientset, err := apiextensionsclient.NewForConfig(config)
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
|
|
return config, clientset, apiExtClientset, nil
|
|
}
|
|
|
|
func MakeFissionClient() (*FissionClient, *kubernetes.Clientset, *apiextensionsclient.Clientset, error) {
|
|
config, kubeClient, apiExtClient, err := GetKubernetesClient()
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
|
|
// make a CRD REST client with the config
|
|
crdClient, err := clientset.NewForConfig(config)
|
|
if err != nil {
|
|
return nil, nil, nil, err
|
|
}
|
|
|
|
fc := &FissionClient{
|
|
crdClient: crdClient,
|
|
}
|
|
return fc, kubeClient, apiExtClient, nil
|
|
}
|
|
|
|
// V1 returns the instance of v1 rest client.
|
|
// The only reason to have this function is to avoid
|
|
// using V1V1() in codebase.
|
|
func (fc *FissionClient) V1() genv1.V1V1Interface {
|
|
return fc.crdClient.V1V1()
|
|
}
|
|
|
|
func (fc *FissionClient) WaitForCRDs() error {
|
|
start := time.Now()
|
|
for {
|
|
fi := fc.crdClient.V1V1().Functions(metav1.NamespaceDefault)
|
|
_, err := fi.List(metav1.ListOptions{})
|
|
if err != nil {
|
|
time.Sleep(100 * time.Millisecond)
|
|
} else {
|
|
return nil
|
|
}
|
|
|
|
if time.Since(start) > 30*time.Second {
|
|
return errors.New("timeout waiting for CRDs")
|
|
}
|
|
}
|
|
}
|