add route
This commit is contained in:
jeff
325
pkg/models/routes.go
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325
pkg/models/routes.go
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@@ -0,0 +1,325 @@
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/*
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Copyright 2018 The KubeSphere 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 models
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import (
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"strings"
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"io/ioutil"
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coreV1 "k8s.io/api/core/v1"
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metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/kubernetes/scheme"
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extensionsV1beta1 "k8s.io/api/extensions/v1beta1"
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"k8s.io/api/rbac/v1beta1"
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"github.com/golang/glog"
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"kubesphere.io/kubesphere/pkg/client"
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)
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const RouterYamlDirectory = "/etc/kubesphere/ingress-controller/"
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type Router struct {
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RouterType string `json:"type"`
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Annotations string `json:"annotations"`
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}
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func GetAllRouters() ([] *coreV1.Service, error) {
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k8sClient := client.NewK8sClient()
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routers := []*coreV1.Service{}
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opts := metaV1.ListOptions{}
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namespaces, err := k8sClient.CoreV1().Namespaces().List(opts)
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if err != nil {
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glog.Error(err)
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return routers, err
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}
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opts = metaV1.ListOptions{
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LabelSelector: "app=kubesphere,component=kubesphere-router",
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FieldSelector: "metadata.name=kubesphere-router-gateway",
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}
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for _, namespace := range namespaces.Items {
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services, err := k8sClient.CoreV1().Services(namespace.Name).List(opts)
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if err != nil {
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glog.Error(err)
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return nil, err
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}
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if len(services.Items) > 0 {
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routers = append(routers, &services.Items[0])
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}
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}
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return routers, nil
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}
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// Get router from a namespace
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func GetRouter(namespace string) (*coreV1.Service, error) {
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k8sClient := client.NewK8sClient()
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var router *coreV1.Service
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opts := metaV1.ListOptions{
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LabelSelector: "app=kubesphere,component=kubesphere-router",
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FieldSelector: "metadata.name=kubesphere-router-gateway",
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}
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services, err := k8sClient.CoreV1().Services(namespace).List(opts)
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if err != nil {
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glog.Error(err)
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return nil, err
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}
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if len(services.Items) > 0 {
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router = &services.Items[0]
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}
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return router, nil
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}
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// Load all resource yamls
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func LoadYamls() ([]string, error) {
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var yamls []string
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files, err := ioutil.ReadDir(RouterYamlDirectory)
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if err != nil {
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glog.Error(err)
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return nil, err
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}
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for _, file := range files {
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content, err := ioutil.ReadFile(RouterYamlDirectory + "/" + file.Name())
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if err != nil {
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glog.Error(err)
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return nil, err
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} else {
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yamls = append(yamls, string(content))
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}
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}
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return yamls, nil
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}
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func IsRouterService(serviceName string) bool {
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if strings.Compare(strings.ToLower(serviceName), "default-http-backend") == 0 {
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return false
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}
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return true
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}
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// Create a ingress controller in a namespace
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func CreateRouter(namespace string, routerType coreV1.ServiceType, annotations map[string]string) (*coreV1.Service, error) {
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k8sClient := client.NewK8sClient()
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var router *coreV1.Service
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yamls, err := LoadYamls()
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if err != nil {
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glog.Error(err)
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}
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for _, f := range yamls {
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decode := scheme.Codecs.UniversalDeserializer().Decode
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obj, _, err := decode([]byte(f), nil, nil)
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if err != nil {
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glog.Error(err)
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return router, err
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}
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switch obj.(type) {
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case *v1beta1.Role:
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role := obj.(*v1beta1.Role)
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role, err := k8sClient.RbacV1beta1().Roles(namespace).Create(role)
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if err != nil {
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glog.Error(err)
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}
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case *v1beta1.ClusterRole:
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clusterRole := obj.(*v1beta1.ClusterRole)
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clusterRole, err := k8sClient.RbacV1beta1().ClusterRoles().Create(clusterRole)
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if err != nil {
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glog.Error(err)
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}
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case *v1beta1.ClusterRoleBinding:
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clusterRoleBinding := obj.(*v1beta1.ClusterRoleBinding)
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clusterRoleBinding.Subjects[0].Namespace = namespace
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clusterRoleBinding, err := k8sClient.RbacV1beta1().ClusterRoleBindings().Create(clusterRoleBinding)
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if err != nil {
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glog.Error(err)
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}
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case *v1beta1.RoleBinding:
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roleBinding := obj.(*v1beta1.RoleBinding)
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roleBinding.Subjects[0].Namespace = namespace
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roleBinding, err := k8sClient.RbacV1beta1().RoleBindings(namespace).Create(roleBinding)
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if err != nil {
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glog.Error(err)
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}
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case *coreV1.ServiceAccount:
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sa := obj.(*coreV1.ServiceAccount)
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sa, err := k8sClient.CoreV1().ServiceAccounts(namespace).Create(sa)
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if err != nil {
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glog.Error(err)
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}
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case *coreV1.Service:
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service := obj.(*coreV1.Service)
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if IsRouterService(service.Name) {
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service.SetAnnotations(annotations)
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service.Spec.Type = routerType
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}
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service, err := k8sClient.CoreV1().Services(namespace).Create(service)
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if err != nil {
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glog.Error(err)
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return nil, err
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}
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if IsRouterService(service.Name) {
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router = service
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}
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case *extensionsV1beta1.Deployment:
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deployment := obj.(*extensionsV1beta1.Deployment)
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deployment, err := k8sClient.ExtensionsV1beta1().Deployments(namespace).Create(deployment)
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if err != nil {
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glog.Error(err)
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}
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default:
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//glog.Info("Default resource")
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}
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}
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return router, nil
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}
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// DeleteRouter is used to delete ingress controller related resources in namespace
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// It will not delete ClusterRole resource cause it maybe used other controllers
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func DeleteRouter(namespace string) (*coreV1.Service, error) {
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k8sClient := client.NewK8sClient()
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var router *coreV1.Service
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yamls, err := LoadYamls()
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if err != nil {
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glog.Error(err)
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}
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for _, f := range yamls {
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decode := scheme.Codecs.UniversalDeserializer().Decode
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obj, _, err := decode([]byte(f), nil, nil)
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if err != nil {
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glog.Error(err)
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return router, err
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}
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options := metaV1.DeleteOptions{}
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switch obj.(type) {
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case *v1beta1.Role:
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role := obj.(*v1beta1.Role)
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err = k8sClient.RbacV1beta1().Roles(namespace).Delete(role.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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case *v1beta1.ClusterRoleBinding:
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clusterRoleBinding := obj.(*v1beta1.ClusterRoleBinding)
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err = k8sClient.RbacV1beta1().ClusterRoleBindings().Delete(clusterRoleBinding.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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case *v1beta1.RoleBinding:
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roleBinding := obj.(*v1beta1.RoleBinding)
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err = k8sClient.RbacV1beta1().RoleBindings(namespace).Delete(roleBinding.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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case *coreV1.ServiceAccount:
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sa := obj.(*coreV1.ServiceAccount)
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err = k8sClient.CoreV1().ServiceAccounts(namespace).Delete(sa.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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case *coreV1.Service:
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service := obj.(*coreV1.Service)
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err = k8sClient.CoreV1().Services(namespace).Delete(service.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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if IsRouterService(service.Name) {
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router = service
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}
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case *extensionsV1beta1.Deployment:
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deployment := obj.(*extensionsV1beta1.Deployment)
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err = k8sClient.ExtensionsV1beta1().Deployments(namespace).Delete(deployment.Name, &options)
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if err != nil {
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glog.Error(err)
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}
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default:
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//glog.Info("Default resource")
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}
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}
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return router, nil
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}
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// Update Ingress Controller Service, change type from NodePort to Loadbalancer or vice versa.
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func UpdateRouter(namespace string, routerType coreV1.ServiceType, annotations map[string]string) (*coreV1.Service, error) {
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k8sClient := client.NewK8sClient()
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var router *coreV1.Service
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router, err := GetRouter(namespace)
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if err != nil {
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glog.Error(err)
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return router, nil
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}
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if router.Spec.Type != routerType {
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router.Spec.Type = routerType
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router.SetAnnotations(annotations)
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router, err = k8sClient.CoreV1().Services(namespace).Update(router)
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if err != nil {
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glog.Error(err)
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return router, err
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}
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}
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return router, nil
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}
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