Sanket SudakeandGitHub
5fae765323
* Define client generator to generate all k8s clients * Increase QPS and burst values * Capture client-go metrics * Support for controller runtime metrics Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
125 lines
3.2 KiB
Go
125 lines
3.2 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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"context"
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"errors"
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"time"
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"go.uber.org/zap"
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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/dynamic"
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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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metricsclient "k8s.io/metrics/pkg/client/clientset/versioned"
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"sigs.k8s.io/controller-runtime/pkg/client/config"
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"github.com/fission/fission/pkg/generated/clientset/versioned"
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"github.com/fission/fission/pkg/utils"
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)
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type ClientGenerator struct {
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restConfig *rest.Config
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}
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func (cg *ClientGenerator) getRestConfig() (*rest.Config, error) {
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if cg.restConfig != nil {
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return cg.restConfig, nil
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}
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var err error
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cg.restConfig, err = config.GetConfig()
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if err != nil {
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return nil, err
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}
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return cg.restConfig, nil
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}
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func (cg *ClientGenerator) GetFissionClient() (versioned.Interface, error) {
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config, err := cg.getRestConfig()
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if err != nil {
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return nil, err
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}
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return versioned.NewForConfig(config)
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}
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func (cg *ClientGenerator) GetKubernetesClient() (kubernetes.Interface, error) {
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config, err := cg.getRestConfig()
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if err != nil {
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return nil, err
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}
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return kubernetes.NewForConfig(config)
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}
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func (cg *ClientGenerator) GetApiExtensionsClient() (apiextensionsclient.Interface, error) {
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config, err := cg.getRestConfig()
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if err != nil {
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return nil, err
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}
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return apiextensionsclient.NewForConfig(config)
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}
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func (cg *ClientGenerator) GetMetricsClient() (metricsclient.Interface, error) {
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config, err := cg.getRestConfig()
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if err != nil {
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return nil, err
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}
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return metricsclient.NewForConfig(config)
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}
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func (cg *ClientGenerator) GetDynamicClient() (dynamic.Interface, error) {
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config, err := cg.getRestConfig()
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if err != nil {
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return nil, err
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}
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return dynamic.NewForConfig(config)
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}
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func NewClientGenerator() *ClientGenerator {
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return &ClientGenerator{}
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}
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func NewClientGeneratorWithRestConfig(restConfig *rest.Config) *ClientGenerator {
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return &ClientGenerator{restConfig: restConfig}
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}
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// WaitForCRDs does a timeout to check if CRDs have been installed
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func WaitForCRDs(ctx context.Context, logger *zap.Logger, fissionClient versioned.Interface) error {
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logger.Info("Waiting for CRDs to be installed")
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defaultNs := utils.DefaultNSResolver().DefaultNamespace
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if defaultNs == "" {
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defaultNs = metav1.NamespaceDefault
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}
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start := time.Now()
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for {
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fi := fissionClient.CoreV1().Functions(defaultNs)
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_, err := fi.List(ctx, 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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