client-go gin的简单整合六-list-watch二（关于Rs与Pod以及Deployment的完善）

client-go gin的简单整合六-list-watch二（关于Rs与Pod以及Deployment的完善）

背景：

前面完成了client-go gin的简单整合五-list-watch deployment应用,进一步把 Rs Pod也实现list-watch!前面少写的：

/src/core/deployment_init.go

//更新 func (depmap *DeploymentMap) Update(dep *v1.Deployment) error { if list, ok := depmap.data.Load(dep.Namespace); ok { for i, range_dep := range list.([]*v1.Deployment) { if range_dep.Name == dep.Name { list.([]*v1.Deployment)[i] = dep depmap.data.Store(dep.Namespace, list) } } return nil } return fmt.Errorf("deployment-%s not found", dep.Name) }

忘记了Store数据....depmap.data.Store(dep.Namespace, list)！

client-go gin的简单整合六-list-watch二（关于Rs与Pod）

关于Rs list-watch

/src/core/rs_init.go

package core import ( "errors" "fmt" v1 "k8s.io/api/apps/v1" "log" "sync" ) type RSMapStruct struct { Data sync.Map } func (rsmap *RSMapStruct) Add(rs *v1.ReplicaSet) { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { value = append(value.([]*v1.ReplicaSet), rs) rsmap.Data.Store(key, value) } else { rsmap.Data.Store(key, []*v1.ReplicaSet{rs}) } } func (rsmap *RSMapStruct) Update(rs *v1.ReplicaSet) error { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { for index, r := range value.([]*v1.ReplicaSet) { if r.Name == rs.Name { value.([]*v1.ReplicaSet)[index] = rs rsmap.Data.Store(key, value) return nil } } } return fmt.Errorf("rs-%s not found", rs.Name) } func (rsmap *RSMapStruct) Delete(rs *v1.ReplicaSet) { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { for index, r := range value.([]*v1.ReplicaSet) { if r.Name == rs.Name { value = append(value.([]*v1.ReplicaSet)[0:index], value.([]*v1.ReplicaSet)[index+1:]...) rsmap.Data.Store(key, value) return } } } } func (rsmap *RSMapStruct) ListByNS(ns string) ([]*v1.ReplicaSet, error) { if list, ok := rsmap.Data.Load(ns); ok { return list.([]*v1.ReplicaSet), nil } return nil, errors.New("rs record not found") } func (rsmap *RSMapStruct) GetRsLabelsByDeployment(deploy *v1.Deployment) ([]map[string]string, error) { rs, err := rsmap.ListByNS(deploy.Namespace) if err != nil { return nil, err } ret := make([]map[string]string, 0) for _, item := range rs { //if item.Annotations["deployment.kubernetes.io/revision"] != deploy.Annotations["deployment.kubernetes.io/revision"] { // continue //} for _, v := range item.OwnerReferences { if v.Name == deploy.Name { ret = append(ret, item.Labels) break } } } return ret, nil } type RSHandler struct { } func (rsmap *RSHandler) OnAdd(obj interface{}) { RSMap.Add(obj.(*v1.ReplicaSet)) } func (rsmap *RSHandler) OnUpdate(oldObj interface{}, newObj interface{}) { err := RSMap.Update(newObj.(*v1.ReplicaSet)) if err != nil { log.Println(err) } } func (rsmap *RSHandler) OnDelete(obj interface{}) { RSMap.Delete(obj.(*v1.ReplicaSet)) } var RSMap *RSMapStruct func init() { RSMap = &RSMapStruct{} }

关于Pod list-watch

先写一个util方法(就为了判断两个label是否相同！)：/src/core/Util.go

func IsValidLabel(m1, m2 map[string]string) bool { for key := range m2 { if m2[key] != m1[key] { return false } } return true }

基本copy自deployment_init.go:/src/core/pod_int.go

package core import ( "fmt" corev1 "k8s.io/api/core/v1" "log" "sync" ) type PodMapStruct struct { data sync.Map } func (podmap *PodMapStruct) Add(pod *corev1.Pod) { key := pod.Namespace if value, ok := podmap.data.Load(key); ok { value = append(value.([]*corev1.Pod), pod) podmap.data.Store(key, value) } else { podmap.data.Store(key, []*corev1.Pod{pod}) } } func (podmap *PodMapStruct) Update(pod *corev1.Pod) error { key := pod.Namespace if value, ok := podmap.data.Load(key); ok { for index, p := range value.([]*corev1.Pod) { if p.Name == pod.Name { value.([]*corev1.Pod)[index] = pod podmap.data.Store(key, value) return nil } } } return fmt.Errorf("pod-%s not found", pod.Name) } func (podmap *PodMapStruct) Delete(pod *corev1.Pod) { key := pod.Namespace if value, ok := podmap.data.Load(key); ok { for index, p := range value.([]*corev1.Pod) { if p.Name == pod.Name { value = append(value.([]*corev1.Pod)[0:index], value.([]*corev1.Pod)[index+1:]...) podmap.data.Store(key, value) return } } } } func (podmap *PodMapStruct) ListByNS(ns string) ([]*corev1.Pod, error) { if ns != "" { if list, ok := podmap.data.Load(ns); ok { return list.([]*corev1.Pod), nil } } return nil, fmt.Errorf("pods not found") } func (podmap *PodMapStruct) ListByLabels(ns string, labels []map[string]string) ([]*corev1.Pod, error) { pods, err := podmap.ListByNS(ns) if err != nil { return nil, err } ret := make([]*corev1.Pod, 0) for _, pod := range pods { for _, label := range labels { if IsValidLabel(pod.Labels, label) { ret = append(ret, pod) } } } return ret, nil } type PodHandler struct { } var PodMap *PodMapStruct func init() { PodMap = &PodMapStruct{} } func (podmap *PodHandler) OnAdd(obj interface{}) { PodMap.Add(obj.(*corev1.Pod)) } func (podmap *PodHandler) OnUpdate(oldObj interface{}, newObj interface{}) { err := PodMap.Update(newObj.(*corev1.Pod)) if err != nil { log.Println(err) } } func (podmap *PodHandler) OnDelete(obj interface{}) { PodMap.Delete(obj.(*corev1.Pod)) }

deployment informer AddEventHandler

/src/core/deployment_init.go

package core import ( "fmt" "k8s-demo1/src/lib" v1 "k8s.io/api/apps/v1" "k8s.io/apimachinery/pkg/util/wait" "k8s.io/client-go/informers" "log" "sync" ) type DeploymentMap struct { data sync.Map } func (depmap *DeploymentMap) Add(dep *v1.Deployment) { if list, ok := depmap.data.Load(dep.Namespace); ok { list = append(list.([]*v1.Deployment), dep) depmap.data.Store(dep.Namespace, list) } else { depmap.data.Store(dep.Namespace, []*v1.Deployment{dep}) } } func (depmap *DeploymentMap) Update(dep *v1.Deployment) error { if list, ok := depmap.data.Load(dep.Namespace); ok { for i, range_dep := range list.([]*v1.Deployment) { if range_dep.Name == dep.Name { list.([]*v1.Deployment)[i] = dep } } return nil } return fmt.Errorf("deployment-%s not found", dep.Name) } // 删除 func (depmap *DeploymentMap) Delete(dep *v1.Deployment) { if list, ok := depmap.data.Load(dep.Namespace); ok { for i, range_dep := range list.([]*v1.Deployment) { if range_dep.Name == dep.Name { newList := append(list.([]*v1.Deployment)[:i], list.([]*v1.Deployment)[i+1:]...) depmap.data.Store(dep.Namespace, newList) break } } } } func (depmap *DeploymentMap) ListByNS(ns string) ([]*v1.Deployment, error) { if list, ok := depmap.data.Load(ns); ok { return list.([]*v1.Deployment), nil } return nil, fmt.Errorf("record not found") } var DepMap *DeploymentMap func init() { DepMap = &DeploymentMap{} } type DepHandler struct { } func (d *DepHandler) OnAdd(obj interface{}) { //fmt.Println(obj.(*v1.Deployment).Name) DepMap.Add(obj.(*v1.Deployment)) } func (d *DepHandler) OnUpdate(oldObj, newObj interface{}) { err := DepMap.Update(newObj.(*v1.Deployment)) if err != nil { log.Println(err) } } func (d *DepHandler) OnDelete(obj interface{}) { if d, ok := obj.(*v1.Deployment); ok { DepMap.Delete(d) } } func InitDeployment() { factory := informers.NewSharedInformerFactory(lib.K8sClient, 0) depinformer := factory.Apps().V1().Deployments() depinformer.Informer().AddEventHandler(&DepHandler{}) podInformer := factory.Core().V1().Pods().Informer() podInformer.AddEventHandler(&PodHandler{}) rsInformer := factory.Apps().V1().ReplicaSets().Informer() rsInformer.AddEventHandler(&RSHandler{}) factory.Start(wait.NeverStop) }

Pod.go

/src/service/Pod.go

package service import ( "context" "fmt" "github.com/gin-gonic/gin" "k8s-demo1/src/core" . "k8s-demo1/src/lib" v1 "k8s.io/api/apps/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" ) type Pod struct { Namespace string Name string Status string Images string NodeName string CreateTime string Labels map[string]string } func ListallPod(g *gin.Context) { ns := g.Query("ns") //pods, err := K8sClient.CoreV1().Pods(ns).List(context.Background(), metav1.ListOptions{}) pods, err := core.PodMap.ListByNS(ns) if err != nil { g.Error(err) } ret := make([]*Pod, 0) for _, item := range pods { ret = append(ret, &Pod{ Namespace: item.Namespace, Name: item.Name, Status: string(item.Status.Phase), Labels: item.Labels, NodeName: item.Spec.NodeName, Images: item.Spec.Containers[0].Image, CreateTime: item.CreationTimestamp.Format("2006-01-02 15:04:05"), }) } g.JSON(200, ret) return }

deployment.go的修改

deployment.go也要修改一下（上次没有将GetPodsByDep等方法修改为list-wath!）/src/service/deployment.go：

package service import ( "fmt" "github.com/gin-gonic/gin" "k8s-demo1/src/core" v1 "k8s.io/api/apps/v1" "log" ) type Deployment struct { Namespace string Name string Replicas int32 AvailableReplicas int32 UnavailableReplicas int32 Images string CreateTime string Labels map[string]string Pods []*Pod } func ListDeployment(g *gin.Context) { ns := g.Query("ns") deplist, err := core.DepMap.ListByNS(ns) //dps, err := K8sClient.AppsV1().Deployments(ns).List(context.Background(), metav1.ListOptions{}) if err != nil { g.Error(err) } ret := make([]*Deployment, 0) for _, item := range deplist { ret = append(ret, &Deployment{ Namespace: item.Namespace, Name: item.Name, Replicas: item.Status.Replicas, AvailableReplicas: item.Status.AvailableReplicas, UnavailableReplicas: item.Status.UnavailableReplicas, Images: item.Spec.Template.Spec.Containers[0].Image, Labels: item.GetLabels(), Pods: GetPodsByDep(ns, *item), CreateTime: item.CreationTimestamp.Format("2006-01-02 15:03:04"), }) } g.JSON(200, ret) return } func GetLabels(m map[string]string) string { labels := "" // aa=xxx,xxx=xx for k, v := range m { if labels != "" { labels += "," } labels += fmt.Sprintf("%s=%s", k, v) } return labels } func GetPodsByDep(ns string, dep v1.Deployment) []*Pod { rsLabelsMap, err := core.RSMap.GetRsLabelsByDeployment(&dep) if err != nil { log.Fatal(err) } pods, err := core.PodMap.ListByLabels(dep.Namespace, rsLabelsMap) if err != nil { log.Fatal(err) } ret := make([]*Pod, 0) for _, pod := range pods { ret = append(ret, &Pod{ Name: pod.Name, Namespace: pod.Namespace, Images: pod.Spec.Containers[0].Image, NodeName: pod.Spec.NodeName, Labels: pod.Labels, Status: string(pod.Status.Phase), CreateTime: pod.CreationTimestamp.Format("2006-01-02 15:04:05"), }) } return ret }

运行main.go

deployments下的坑......

package core import ( "errors" "fmt" v1 "k8s.io/api/apps/v1" "log" "sync" ) type RSMapStruct struct { Data sync.Map } func (rsmap *RSMapStruct) Add(rs *v1.ReplicaSet) { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { value = append(value.([]*v1.ReplicaSet), rs) rsmap.Data.Store(key, value) } else { rsmap.Data.Store(key, []*v1.ReplicaSet{rs}) } } func (rsmap *RSMapStruct) Update(rs *v1.ReplicaSet) error { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { for index, r := range value.([]*v1.ReplicaSet) { if r.Name == rs.Name { value.([]*v1.ReplicaSet)[index] = rs rsmap.Data.Store(key, value) return nil } } } return fmt.Errorf("rs-%s not found", rs.Name) } func (rsmap *RSMapStruct) Delete(rs *v1.ReplicaSet) { key := rs.Namespace if value, ok := rsmap.Data.Load(key); ok { for index, r := range value.([]*v1.ReplicaSet) { if r.Name == rs.Name { value = append(value.([]*v1.ReplicaSet)[0:index], value.([]*v1.ReplicaSet)[index+1:]...) rsmap.Data.Store(key, value) return } } } } func (rsmap *RSMapStruct) ListByNS(ns string) ([]*v1.ReplicaSet, error) { if list, ok := rsmap.Data.Load(ns); ok { return list.([]*v1.ReplicaSet), nil } return nil, errors.New("rs record not found") } func (rsmap *RSMapStruct) GetRsLabelsByDeployment(deploy *v1.Deployment) ([]map[string]string, error) { rs, err := rsmap.ListByNS(deploy.Namespace) if err != nil { return nil, err } ret := make([]map[string]string, 0) for _, item := range rs { //if item.Annotations["deployment.kubernetes.io/revision"] != deploy.Annotations["deployment.kubernetes.io/revision"] { // continue //} for _, v := range item.OwnerReferences { if v.Name == deploy.Name { ret = append(ret, item.Labels) break } } } return ret, nil } func (rsmap *RSMapStruct) GetRsLabelsByDeploymentname(deploy *v1.Deployment) string { rs, err := rsmap.ListByNS(deploy.Namespace) if err != nil { fmt.Println(err) } for _, item := range rs { //if item.Annotations["deployment.kubernetes.io/revision"] != deploy.Annotations["deployment.kubernetes.io/revision"] { // continue //} for _, v := range item.OwnerReferences { if v.Name == deploy.Name { return item.Name } } } return "" } type RSHandler struct { } func (rsmap *RSHandler) OnAdd(obj interface{}) { RSMap.Add(obj.(*v1.ReplicaSet)) } func (rsmap *RSHandler) OnUpdate(oldObj interface{}, newObj interface{}) { err := RSMap.Update(newObj.(*v1.ReplicaSet)) if err != nil { log.Println(err) } } func (rsmap *RSHandler) OnDelete(obj interface{}) { RSMap.Delete(obj.(*v1.ReplicaSet)) } var RSMap *RSMapStruct func init() { RSMap = &RSMapStruct{} }

package service import ( "fmt" "github.com/gin-gonic/gin" "k8s-demo1/src/core" v1 "k8s.io/api/apps/v1" "log" ) type Deployment struct { Namespace string Name string Replicas int32 AvailableReplicas int32 UnavailableReplicas int32 Images string CreateTime string Labels map[string]string Pods []*Pod } func ListDeployment(g *gin.Context) { ns := g.Query("ns") deplist, _ := core.DepMap.ListByNS(ns) //dps, err := K8sClient.AppsV1().Deployments(ns).List(context.Background(), metav1.ListOptions{}) //if err != nil { // g.Error(err) //} ret := make([]*Deployment, 0) for _, item := range deplist { ret = append(ret, &Deployment{ Namespace: item.Namespace, Name: item.Name, Replicas: item.Status.Replicas, AvailableReplicas: item.Status.AvailableReplicas, UnavailableReplicas: item.Status.UnavailableReplicas, Images: item.Spec.Template.Spec.Containers[0].Image, Labels: item.GetLabels(), Pods: GetPodsByDep(*item), CreateTime: item.CreationTimestamp.Format("2006-01-02 15:03:04"), }) } g.JSON(200, ret) return } func GetLabels(m map[string]string) string { labels := "" // aa=xxx,xxx=xx for k, v := range m { if labels != "" { labels += "," } labels += fmt.Sprintf("%s=%s", k, v) } return labels } func GetPodsByDep(dep v1.Deployment) []*Pod { rsLabelsMap, err := core.RSMap.GetRsLabelsByDeployment(&dep) if err != nil { log.Fatal(err) } pods, err := core.PodMap.ListByRsLabels(dep.Namespace, rsLabelsMap) if err != nil { log.Fatal(err) } ret := make([]*Pod, 0) for _, pod := range pods { if core.RSMap.GetRsLabelsByDeploymentname(&dep) == pod.OwnerReferences[0].Name { ret = append(ret, &Pod{ Name: pod.Name, Namespace: pod.Namespace, Images: pod.Spec.Containers[0].Image, NodeName: pod.Spec.NodeName, Labels: pod.Labels, Status: string(pod.Status.Phase), CreateTime: pod.CreationTimestamp.Format("2006-01-02 15:04:05"), }) } } return ret }

总结：

总结一下这过程学到的：

deployment rs pod之间的关系 OwnerReferences的匹配 下面还是继续crud吧......这个地方让我理解的有点长list-watch

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。