110 lines
2.7 KiB
Go
110 lines
2.7 KiB
Go
/*
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Copyright 2016 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package crd
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import (
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"errors"
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"os"
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"time"
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apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes"
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_ "k8s.io/client-go/plugin/pkg/client/auth"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/clientcmd"
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genClientset "github.com/fission/fission/pkg/apis/genclient/clientset/versioned"
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)
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type (
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FissionClient struct {
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genClientset.Interface
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}
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)
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// Get a kubernetes client using the kubeconfig file at the
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// environment var $KUBECONFIG, or an in-cluster config if that's
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// undefined.
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func GetKubernetesClient() (*rest.Config, *kubernetes.Clientset, *apiextensionsclient.Clientset, error) {
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var config *rest.Config
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var err error
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// get the config, either from kubeconfig or using our
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// in-cluster service account
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kubeConfig := os.Getenv("KUBECONFIG")
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if len(kubeConfig) != 0 {
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config, err = clientcmd.BuildConfigFromFlags("", kubeConfig)
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if err != nil {
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return nil, nil, nil, err
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}
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} else {
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config, err = rest.InClusterConfig()
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if err != nil {
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return nil, nil, nil, err
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}
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}
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// creates the clientset
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clientset, err := kubernetes.NewForConfig(config)
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if err != nil {
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return nil, nil, nil, err
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}
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apiExtClientset, err := apiextensionsclient.NewForConfig(config)
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if err != nil {
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return nil, nil, nil, err
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}
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return config, clientset, apiExtClientset, nil
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}
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func MakeFissionClient() (*FissionClient, *kubernetes.Clientset, *apiextensionsclient.Clientset, error) {
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config, kubeClient, apiExtClient, err := GetKubernetesClient()
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if err != nil {
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return nil, nil, nil, err
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}
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// make a CRD REST client with the config
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crdClient, err := genClientset.NewForConfig(config)
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if err != nil {
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return nil, nil, nil, err
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}
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fc := &FissionClient{
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Interface: crdClient,
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}
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return fc, kubeClient, apiExtClient, nil
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}
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func (fc *FissionClient) WaitForCRDs() error {
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start := time.Now()
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for {
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fi := fc.CoreV1().Functions(metav1.NamespaceDefault)
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_, err := fi.List(metav1.ListOptions{})
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if err != nil {
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time.Sleep(100 * time.Millisecond)
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} else {
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return nil
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}
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if time.Since(start) > 30*time.Second {
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return errors.New("timeout waiting for CRDs")
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}
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}
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}
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