188 lines
6.5 KiB
Go
188 lines
6.5 KiB
Go
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/*
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Copyright 2023 ycyxuehan.
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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 controller
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import (
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"context"
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"fmt"
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"k8s.io/apimachinery/pkg/runtime"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/log"
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appsv1 "k8s.io/api/apps/v1"
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batchv1 "k8s.io/api/batch/v1"
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corev1 "k8s.io/api/core/v1"
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zeldaiov1alpha1 "github.com/ycyxuehan/zelda/api/v1alpha1"
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watchers "github.com/ycyxuehan/zelda/watcher"
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)
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// ZServiceReconciler reconciles a ZService object
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type ZServiceReconciler struct {
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client.Client
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Scheme *runtime.Scheme
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}
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//+kubebuilder:rbac:groups=zelda.io,resources=zservices,verbs=get;list;watch;create;update;patch;delete
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//+kubebuilder:rbac:groups=zelda.io,resources=zservices/status,verbs=get;update;patch
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//+kubebuilder:rbac:groups=zelda.io,resources=zservices/finalizers,verbs=update
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// +kubebuilder:rbac:groups=*,resources=services,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=*,resources=services/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=apps,resources=deployments/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=*,resources=pods,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=*,resources=pods/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=batch,resources=jobs,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=batch,resources=jobs/status,verbs=get;update;patch
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// Reconcile is part of the main kubernetes reconciliation loop which aims to
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// move the current state of the cluster closer to the desired state.
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// TODO(user): Modify the Reconcile function to compare the state specified by
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// the ZService object against the actual cluster state, and then
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// perform operations to make the cluster state reflect the state specified by
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// the user.
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//
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// For more details, check Reconcile and its Result here:
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// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.10.0/pkg/reconcile
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func (r *ZServiceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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_ = log.FromContext(ctx)
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// TODO(user): your logic here
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zservice := zeldaiov1alpha1.ZService{}
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err := r.Get(ctx, req.NamespacedName, &zservice)
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if err != nil {
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log.Log.Error(err, "cannot get resource zservices.zelda.io/%s/%s", req.Namespace, req.Name)
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return ctrl.Result{}, err
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}
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if zservice.DeletionTimestamp == nil || zservice.DeletionTimestamp.IsZero() {
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err = r.Process(ctx, &zservice)
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if err != nil {
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log.Log.Error(err, "create resource zservices.zelda.io/%s/%s failed: %v", req.Namespace, req.Name, err)
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}
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return ctrl.Result{}, err
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}
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return ctrl.Result{}, nil
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}
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// SetupWithManager sets up the controller with the Manager.
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func (r *ZServiceReconciler) SetupWithManager(mgr ctrl.Manager) error {
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return ctrl.NewControllerManagedBy(mgr).
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For(&zeldaiov1alpha1.ZService{}).
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Watches(&corev1.Pod{}, &watchers.ZServiceWatcher{
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Client: mgr.GetClient(),
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}).
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Watches(&appsv1.Deployment{},
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&watchers.ZServiceWatcher{
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Client: mgr.GetClient(),
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}).
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Watches(&batchv1.Job{},
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&watchers.ZServiceWatcher{
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Client: mgr.GetClient(),
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}).
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Complete(r)
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}
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//process zservice 负责运行服务。暂时兼容deployment，job，pod三种模式。zservice每次变动都会去检查其子资源是否存在，是否一致
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func (r *ZServiceReconciler) Process(ctx context.Context, zservice *zeldaiov1alpha1.ZService) error {
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var managedResource client.Object
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switch zservice.Spec.Kind {
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case "Deployment":
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managedResource = &appsv1.Deployment{}
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case "Job":
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managedResource = &batchv1.Job{}
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case "Pod":
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managedResource = &corev1.Pod{}
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default:
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return fmt.Errorf("unkown kind")
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}
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changed, err := zservice.IsSpecChanged()
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if err != nil {
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//日志打印错误
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fmt.Println(err)
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}
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err = r.Get(context.Background(), zservice.NamespacedNameResource(), managedResource)
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if err != nil || changed { //子对象不见了，需要创建, spec有变动，需要更新，这里先创建option
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runTemplate := zeldaiov1alpha1.ZRunTemplate{}
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err = r.Get(context.Background(), zservice.NamespacedNameRunTemplate(), &runTemplate)
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if err != nil {
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return err
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}
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project := zeldaiov1alpha1.ZProject{}
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err = r.Get(context.Background(), zservice.NamespacedNameProject(), &project)
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if err != nil {
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return err
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}
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registry := zeldaiov1alpha1.ZRegistry{}
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err = r.Get(context.Background(), project.NamespacedNameRegistry(), ®istry)
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if err != nil {
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return err
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}
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customHost := zeldaiov1alpha1.ZCustomHost{}
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err = r.Get(context.Background(), zservice.NamespacedNameCustomHost(), &customHost)
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if err != nil {
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return err
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}
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sa := corev1.ServiceAccount{}
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err = r.Get(context.Background(), zservice.NamespacedNameUser(), &sa)
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if err != nil {
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return err
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}
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secrets := []corev1.LocalObjectReference{}
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for _, secret := range sa.Secrets {
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if secret.Namespace == zservice.GetNamespace() {
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secrets = append(secrets, corev1.LocalObjectReference{Name: secret.Name})
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}
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}
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option := zeldaiov1alpha1.NewClientObjectOption{
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ZRunTemplateSpec: runTemplate.Spec.DeepCopy(),
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Registry: registry.DeepCopy(),
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HostAlias: customHost.Spec.HostAlias,
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UserSecrets: secrets,
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}
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managedResource = zservice.ClientObject(&option)
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}
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if err != nil {
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err = r.Create(context.Background(), managedResource, &client.CreateOptions{})
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return err
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}
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if changed {
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err = r.Update(context.Background(), managedResource, &client.UpdateOptions{})
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return err
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}
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////////////////////////////////////////
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//这里是处理状态更新
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r.UpdateStatus(ctx, zservice, managedResource)
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return nil
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}
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//处理状态更新
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func (r *ZServiceReconciler) UpdateStatus(ctx context.Context, zservice *zeldaiov1alpha1.ZService, managedResource client.Object) error {
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err := zservice.UpdateStatus(managedResource)
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if err != nil {
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return err
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}
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err = r.Status().Update(context.Background(), zservice)
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return err
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}
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