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/*
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Copyright 2022.
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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 controllers
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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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demov1 "mashibing.com/demo/app/api/v1"
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)
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// 是提供调和函数（把现阶段的状态，和我们定义的状态进行统一。趋近的调和函数），对象中的数据，可以是在上层统一管理
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// AppReconciler reconciles a App object
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type AppReconciler 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=demo.mashibing.com,resources=apps,verbs=get;list;watch;create;update;patch;delete
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//+kubebuilder:rbac:groups=demo.mashibing.com,resources=apps/status,verbs=get;update;patch
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//+kubebuilder:rbac:groups=demo.mashibing.com,resources=apps/finalizers,verbs=update
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// 我们核心功能函数，要去定义operator的行为
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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 App 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@v0.13.0/pkg/reconcile
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func (r *AppReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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logger := log.FromContext(ctx)
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logger.Info("Start reconcile")
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// 实现你的业务逻辑
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// 1. 获取去资源对象
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app := new(demov1.App)
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if err := r.Client.Get(ctx, req.NamespacedName, app); err != nil {
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logger.Error(err, " Get resource")
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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// 2. 处理数据
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// 2.1 获取对应的字段
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action := app.Spec.Action
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object := app.Spec.Object
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// 2.2 拼接数据
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result := fmt.Sprintf("%s,%s", action, object)
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// 3. 创建结果
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appCopy := app.DeepCopy()
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appCopy.Status.Result = result
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// 4. 更新 status
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if err := r.Client.Status().Update(ctx, appCopy); err != nil {
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return ctrl.Result{}, err
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}
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logger.Info("End reconcile")
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return ctrl.Result{}, nil
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}
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// 将 controller 注册到 manager 中
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// SetupWithManager sets up the controller with the Manager.
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func (r *AppReconciler) SetupWithManager(mgr ctrl.Manager) error {
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return ctrl.NewControllerManagedBy(mgr).
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For(&demov1.App{}).
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Complete(r)
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}
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