l-35 first code done

api/v1/const.go

@@ -4,3 +4,32 @@ const (
 	ModeIngress  = "ingress"
 	ModeNodePort = "nodeport"
 )
+
+const (
+	ConditionTypeDeployment = "Deployment"
+	ConditionTypeService    = "Service"
+	ConditionTypeIngress    = "Ingress"
+
+	ConditionMessageDeploymentOKFmt  = "Deployment %s is ready"
+	ConditionMessageDeploymentNotFmt = "Deployment %s is not ready"
+	ConditionMessageServiceOKFmt     = "Service %s is ready"
+	ConditionMessageServiceNotFmt    = "Service %s is not ready"
+	ConditionMessageIngressOKFmt     = "Ingress %s is ready"
+	ConditionMessageIngressNotFmt    = "Ingress %s is not ready"
+
+	ConditionReasonDeploymentReady    = "DeploymentReady"
+	ConditionReasonDeploymentNotReady = "DeploymentNotReady"
+	ConditionReasonServiceReady       = "ServiceReady"
+	ConditionReasonServiceNotReady    = "ServiceNotReady"
+	ConditionReasonIngressReady       = "IngressReady"
+	ConditionReasonIngressNotReady    = "IngressNotReady"
+
+	ConditonStatusTrue  = "True"
+	ConditonStatusFalse = "False"
+)
+
+const (
+	StatusReasonSuccess  = "Success"
+	StatusMessageSuccess = "Success"
+	StatusPhaseComplete  = "Complete"
+)

controllers/msbdeployment_controller.go

@@ -18,13 +18,16 @@ package controllers
 
 import (
 	"context"
+	"fmt"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	networkv1 "k8s.io/api/networking/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"reflect"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 	"strings"
+	"time"
 
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -34,6 +37,8 @@ import (
 	myAppsv1 "mashibing.com/pkg/mashibing-deployment/api/v1"
 )
 
+var WaitRequeue = 10 * time.Second
+
 // MsbDeploymentReconciler reconciles a MsbDeployment object
 type MsbDeploymentReconciler struct {
 	client.Client
@@ -54,6 +59,14 @@ type MsbDeploymentReconciler struct {
 // For more details, check Reconcile and its Result here:
 // - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.13.0/pkg/reconcile
 func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
+	// 状态更新策略
+	// 创建的时候
+	//    更新为创建
+	// 更新的时候
+	//    根据获取的状态来判断时候更新status
+	// 删除的时候
+	//    只有在操作 ingress 的时候，并且 mode 为 nodeport 的时候
+
 	logger := log.FromContext(ctx, "MsbDployment", req.NamespacedName)
 
 	logger.Info("Reconcile is started.")
@@ -74,10 +87,26 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 		if errors.IsNotFound(err) {
 			// 2.1 不存在对象
 			// 2.1.1 创建 deployment
-			if err := r.createDeployment(ctx, mdCopy); err != nil {
-				return ctrl.Result{}, err
+			if errCreate := r.createDeployment(ctx, mdCopy); err != nil {
+				return ctrl.Result{}, errCreate
+			}
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeDeployment,
+				fmt.Sprintf(myAppsv1.ConditionMessageDeploymentNotFmt, req.Name),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonDeploymentNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
 			}
 		} else {
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeDeployment,
+				fmt.Sprintf("Deployment %s, err: %s", req.Name, err.Error()),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonDeploymentNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
 			return ctrl.Result{}, err
 		}
 	} else {
@@ -86,6 +115,25 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 		if err := r.updateDeployment(ctx, mdCopy, deploy); err != nil {
 			return ctrl.Result{}, err
 		}
+		if deploy.Status.AvailableReplicas == mdCopy.Spec.Replicas {
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeDeployment,
+				fmt.Sprintf(myAppsv1.ConditionMessageDeploymentOKFmt, req.Name),
+				myAppsv1.ConditonStatusTrue,
+				myAppsv1.ConditionReasonDeploymentReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
+		} else {
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeDeployment,
+				fmt.Sprintf(myAppsv1.ConditionMessageDeploymentNotFmt, req.Name),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonDeploymentNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
+		}
 	}
 
 	// ======= 处理 service =========
@@ -109,7 +157,23 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 			} else {
 				return ctrl.Result{}, myAppsv1.ErrorNotSupportMode
 			}
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeService,
+				fmt.Sprintf(myAppsv1.ConditionMessageServiceNotFmt, req.Name),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonServiceNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
 		} else {
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeService,
+				fmt.Sprintf("Service %s, err: %s", req.Name, err.Error()),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonServiceNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
 			return ctrl.Result{}, err
 		}
 	} else {
@@ -129,6 +193,14 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 		} else {
 			return ctrl.Result{}, myAppsv1.ErrorNotSupportMode
 		}
+		if _, errStatus := r.updateStatus(ctx,
+			mdCopy,
+			myAppsv1.ConditionTypeService,
+			fmt.Sprintf(myAppsv1.ConditionMessageServiceOKFmt, req.Name),
+			myAppsv1.ConditonStatusTrue,
+			myAppsv1.ConditionReasonServiceReady); errStatus != nil {
+			return ctrl.Result{}, errStatus
+		}
 	}
 
 	// ======= 处理 ingress =========
@@ -143,12 +215,28 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 				if err := r.createIngress(ctx, mdCopy); err != nil {
 					return ctrl.Result{}, err
 				}
+				if _, errStatus := r.updateStatus(ctx,
+					mdCopy,
+					myAppsv1.ConditionTypeIngress,
+					fmt.Sprintf(myAppsv1.ConditionMessageIngressNotFmt, req.Name),
+					myAppsv1.ConditonStatusFalse,
+					myAppsv1.ConditionReasonIngressNotReady); errStatus != nil {
+					return ctrl.Result{}, errStatus
+				}
 			} else if strings.ToLower(mdCopy.Spec.Expose.Mode) == myAppsv1.ModeNodePort {
 				// 4.1.2 mode 为 nodeport
 				// 4.1.2.1 退出
 				return ctrl.Result{}, nil
 			}
 		} else {
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeIngress,
+				fmt.Sprintf("Ingress %s, err: %s", req.Name, err.Error()),
+				myAppsv1.ConditonStatusFalse,
+				myAppsv1.ConditionReasonIngressNotReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
 			return ctrl.Result{}, err
 		}
 	} else {
@@ -159,15 +247,37 @@ func (r *MsbDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Reques
 			if err := r.updateIngress(ctx, mdCopy, ig); err != nil {
 				return ctrl.Result{}, err
 			}
+			if _, errStatus := r.updateStatus(ctx,
+				mdCopy,
+				myAppsv1.ConditionTypeIngress,
+				fmt.Sprintf(myAppsv1.ConditionMessageIngressOKFmt, req.Name),
+				myAppsv1.ConditonStatusTrue,
+				myAppsv1.ConditionReasonIngressReady); errStatus != nil {
+				return ctrl.Result{}, errStatus
+			}
 		} else if strings.ToLower(mdCopy.Spec.Expose.Mode) == myAppsv1.ModeNodePort {
 			// 4.2.2 mode 为 nodeport
 			// 4.2.2.1 删除 ingress
 			if err := r.deleteIngress(ctx, mdCopy); err != nil {
 				return ctrl.Result{}, err
 			}
+			r.deleteStatus(mdCopy, myAppsv1.ConditionTypeIngress)
 		}
 	}
 
+	// 最后检查状态时候最终完成
+	if sus, errStatus := r.updateStatus(ctx,
+		mdCopy,
+		"",
+		"",
+		"",
+		""); errStatus != nil {
+		return ctrl.Result{}, errStatus
+	} else if !sus {
+		logger.Info("Reconcile is ended.")
+		return ctrl.Result{RequeueAfter: WaitRequeue}, nil
+	}
+
 	logger.Info("Reconcile is ended.")
 	return ctrl.Result{}, nil
 }
@@ -341,3 +451,133 @@ func (r *MsbDeploymentReconciler) deleteIngress(ctx context.Context, md *myAppsv
 	}
 	return r.Client.Delete(ctx, ig)
 }
+
+// 处理status
+// return:
+//
+//		bool: 资源是否完成，时候需要等待。如果是 true，表示资源已经完成没不需要再次reconcile
+//		                              如果是 false，表示资源还未完成，需要重新入队
+//	    error：执行 update 的状态
+func (r *MsbDeploymentReconciler) updateStatus(ctx context.Context, md *myAppsv1.MsbDeployment, conditionType, message, status, reason string) (bool, error) {
+	if conditionType != "" {
+		// 1. 获取 status
+		//status := md.Status
+		// 2. 获取 conditions 字段
+		//conditions := status.Conditions
+		// 3. 根据当前的需求，获取指定的 condition
+		var condition *myAppsv1.Condition
+		for i := range md.Status.Conditions {
+			// 4. 是否获取到
+			if md.Status.Conditions[i].Type == conditionType {
+				// 4.1 获取到了
+				condition = &md.Status.Conditions[i]
+			}
+		}
+		if condition != nil {
+			// 4.1.1 获取当前线上的 conditon 状态，与存储的condition进行比较，如果相同，跳过。不同，替换
+			if condition.Status != status ||
+				condition.Message != message ||
+				condition.Reason != reason {
+				condition.Status = status
+				condition.Message = message
+				condition.Reason = reason
+			}
+		} else {
+			// 4.2 没获取到，创建这个conditon，更新到conditons中
+			md.Status.Conditions = append(md.Status.Conditions,
+				createCondition(conditionType, message, status, reason))
+		}
+	}
+
+	// 5. 继续处理其他的conditions
+	m, re, p, sus := isSuccess(md.Status.Conditions)
+	if sus {
+		// 6.1 如果所有conditions的状态都为成功，则更新总的 status 为成功。
+		md.Status.Message = myAppsv1.StatusMessageSuccess
+		md.Status.Reason = myAppsv1.StatusReasonSuccess
+		md.Status.Phase = myAppsv1.StatusPhaseComplete
+	} else {
+		// 6.2 遍历所有的conditons 状态，如果有任意一个condition不是完成的状态，则将这个状态更新到总的 status 中。更待一定时间再次入队。
+		md.Status.Message = m
+		md.Status.Reason = re
+		md.Status.Phase = p
+	}
+	// 7. 执行更新
+	return sus, r.Client.Status().Update(ctx, md)
+}
+
+func isSuccess(conditions []myAppsv1.Condition) (message, reason, phase string, sus bool) {
+	if len(conditions) == 0 {
+		return "", "", "", false
+	}
+	for i := range conditions {
+		if conditions[i].Status == myAppsv1.ConditonStatusFalse {
+			return conditions[i].Message, conditions[i].Reason, conditions[i].Type, false
+		}
+	}
+	return "", "", "", true
+}
+
+func createCondition(conditionType, message, status, reason string) myAppsv1.Condition {
+	return myAppsv1.Condition{
+		Type:               conditionType,
+		Message:            message,
+		Status:             status,
+		Reason:             reason,
+		LastTransitionTime: metav1.NewTime(time.Now()),
+	}
+}
+
+// 需要是幂等的，可以多次执行，不管是否存在。如果存在就删除，不存在就什么也不做
+// 只是删除对应的Condition不做更多的操作
+func (r *MsbDeploymentReconciler) deleteStatus(md *myAppsv1.MsbDeployment, conditionType string) {
+	// 1. 遍历conditions
+	for i := range md.Status.Conditions {
+		// 2. 找到要删除的对象
+		if md.Status.Conditions[i].Type == conditionType {
+			// 3. 执行删除
+			md.Status.Conditions = deleteCondition(md.Status.Conditions, i)
+		}
+	}
+}
+
+//	a := struct {
+//		len int
+//		cap int
+//		[cap]int [1,2,3,4]
+//	}
+//
+// b = a
+//
+// b
+//
+// a
+// a = append(a, "b")
+// conditions = deleteCondition(conditions, 2)
+// a = [1,2,3,4,5]
+// f(a)
+//
+//	f(b []int) {
+//		 b = n[0:4]
+//	}
+func deleteCondition(conditions []myAppsv1.Condition, i int) []myAppsv1.Condition {
+	// 前提：切片中的元素顺序不敏感
+	// 1. 要删除的元素的索引值不能大于切片长度
+	if i >= len(conditions) {
+		return []myAppsv1.Condition{}
+	}
+
+	// 2. 如果切片长度为1，且索引值为0，直接清空
+	if len(conditions) == 1 && i == 0 {
+		return conditions[:0]
+	}
+
+	// 3. 如果长度-1等于索引值，删除最后一个元素
+	if len(conditions)-1 == i {
+		return conditions[:len(conditions)-1]
+	}
+
+	// 4. 交换索引位置的元素和最后一个元素，删除最后一个元素
+	conditions[i], conditions[len(conditions)-1] = conditions[len(conditions)-1], conditions[i]
+	return conditions[:len(conditions)-1]
+}