mirror of
https://gitee.com/devstar/devstar-devcontainer-operator
synced 2025-04-21 09:42:22 +00:00
127 lines
4.6 KiB
Go
127 lines
4.6 KiB
Go
/*
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Copyright 2024.
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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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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/types"
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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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devcontainer_v1 "devstar.cn/DevcontainerApp/api/v1"
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devcontainer_controller_utils "devstar.cn/DevcontainerApp/internal/controller/utils"
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app_v1 "k8s.io/api/apps/v1"
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core_v1 "k8s.io/api/core/v1"
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k8s_sigs_controller_runtime_utils "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
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)
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// DevcontainerAppReconciler reconciles a DevcontainerApp object
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type DevcontainerAppReconciler 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=devcontainer.devstar.cn,resources=devcontainerapps,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=devcontainer.devstar.cn,resources=devcontainerapps/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=devcontainer.devstar.cn,resources=devcontainerapps/finalizers,verbs=update
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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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// Modify the Reconcile function to compare the state specified by
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// the DevcontainerApp 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@v0.19.0/pkg/reconcile
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func (r *DevcontainerAppReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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logger := log.FromContext(ctx)
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var err error
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// 1. 读取缓存中的 app
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app := &devcontainer_v1.DevcontainerApp{}
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err = r.Get(ctx, req.NamespacedName, app)
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if err != nil {
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return ctrl.Result{}, client.IgnoreNotFound(err)
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}
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// 2. 根据 DevcontainerApp 配置信息进行处理
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// 2.1 StatefulSet 处理
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statefulSet := devcontainer_controller_utils.NewStatefulSet(app)
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err = k8s_sigs_controller_runtime_utils.SetControllerReference(app, statefulSet, r.Scheme)
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if err != nil {
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return ctrl.Result{}, err
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}
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// 2.2 查找 集群中同名称的 StatefulSet
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statefulSetInNamespace := &app_v1.StatefulSet{}
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err = r.Get(ctx, req.NamespacedName, statefulSetInNamespace)
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if err != nil {
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if !errors.IsNotFound(err) {
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return ctrl.Result{}, err
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}
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err = r.Create(ctx, statefulSet)
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if err != nil && !errors.IsAlreadyExists(err) {
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logger.Error(err, "Failed to create StatefulSet")
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return ctrl.Result{}, err
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}
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}
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// 这里会反复触发更新
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// 原因：在 SetupWithManager方法中，监听了 StatefulSet ，所以只要更新 StatefulSet 就会触发
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// 此处更新和 controllerManager 更新 StatefulSet 都会触发更新事件，导致循环触发
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//修复方法：加上判断条件，仅在 app.Spec.StatefulSet.Image != statefulSet.Spec.Template.Spec.Containers[0].Image 时才更新 StatefulSet
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if app.Spec.StatefulSet.Image != statefulSet.Spec.Template.Spec.Containers[0].Image {
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if err := r.Update(ctx, statefulSet); err != nil {
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return ctrl.Result{}, err
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}
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}
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// 2.2 Service 处理
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service := devcontainer_controller_utils.NewService(app)
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if err := k8s_sigs_controller_runtime_utils.SetControllerReference(app, service, r.Scheme); err != nil {
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return ctrl.Result{}, err
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}
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serviceInNamespace := &core_v1.Service{}
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err = r.Get(ctx, types.NamespacedName{Name: app.Name, Namespace: app.Namespace}, serviceInNamespace)
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if err != nil {
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if !errors.IsNotFound(err) {
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return ctrl.Result{}, err
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}
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err = r.Create(ctx, service)
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if err != nil && !errors.IsAlreadyExists(err) {
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logger.Error(err, "create service failed")
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return ctrl.Result{}, err
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}
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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 *DevcontainerAppReconciler) SetupWithManager(mgr ctrl.Manager) error {
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return ctrl.NewControllerManagedBy(mgr).
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For(&devcontainer_v1.DevcontainerApp{}).
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Owns(&app_v1.StatefulSet{}).
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Owns(&core_v1.Service{}).
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Complete(r)
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}
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