K8s 管理系统项目[API部分–Service]
1. 接口实现
service/dataselector.go
// service
type serviceCell corev1.Service
func(s serviceCell) GetCreation() time.Time {
return s.CreationTimestamp.Time
}
func(s serviceCell) GetName() string {
return s.Name
}
2. service功能
service/service.go
2.1 获取service详情
// 获取service详情
func (s *servicev1) GetServicetDetail(serviceName, namespace string) (service *corev1.Service, err error) {
service, err = K8s.ClientSet.CoreV1().Services(namespace).Get(context.TODO(), serviceName, metav1.GetOptions{
})
if err != nil {
logger.Error(errors.New("获取Service详情失败, " + err.Error()))
return nil, errors.New("获取Service详情失败, " + err.Error())
}
return service, nil
}
2.2 创建service
// 创建service,,接收ServiceCreate对象
func (s *servicev1) CreateService(data *ServiceCreate) (err error) {
//将data中的数据组装成corev1.Service对象
service := &corev1.Service{
//ObjectMeta中定义资源名、命名空间以及标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
//Spec中定义类型，端口，选择器
Spec: corev1.ServiceSpec{
Type: corev1.ServiceType(data.Type),
Ports: []corev1.ServicePort{
{
Name: "http",
Port: data.Port,
Protocol: "TCP",
TargetPort: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
Selector: data.Label,
},
}
//默认ClusterIP,这里是判断NodePort,添加配置
if data.NodePort != 0 && data.Type == "NodePort" {
service.Spec.Ports[0].NodePort = data.NodePort
}
//创建Service
_, err = K8s.ClientSet.CoreV1().Services(data.Namespace).Create(context.TODO(), service, metav1.CreateOptions{
})
if err != nil {
logger.Error(errors.New("创建Service失败, " + err.Error()))
return errors.New("创建Service失败, " + err.Error())
}
return nil
}
2.3 删除service
// 删除service
func (s *servicev1) DeleteService(serviceName, namespace string) (err error) {
err = K8s.ClientSet.CoreV1().Services(namespace).Delete(context.TODO(), serviceName, metav1.DeleteOptions{
})
if err != nil {
logger.Error(errors.New("删除Service失败, " + err.Error()))
return errors.New("删除Service失败, " + err.Error())
}
return nil
}
2.4 更新service
// 更新service
func (s *servicev1) UpdateService(namespace, content string) (err error) {
var service = &corev1.Service{
}
err = json.Unmarshal([]byte(content), service)
if err != nil {
logger.Error(errors.New("反序列化失败, " + err.Error()))
return errors.New("反序列化失败, " + err.Error())
}
_, err = K8s.ClientSet.CoreV1().Services(namespace).Update(context.TODO(), service, metav1.UpdateOptions{
})
if err != nil {
logger.Error(errors.New("更新service失败, " + err.Error()))
return errors.New("更新service失败, " + err.Error())
}
return nil
}
2.5 service完整
package service
import (
"context"
"encoding/json"
"errors"
"github.com/wonderivan/logger"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
)
var Servicev1 servicev1
type servicev1 struct{
}
type ServicesResp struct {
Items []corev1.Service `json:"items"`
Total int `json:"total"`
}
type ServiceCreate struct {
Name string `json:"name"`
Namespace string `json:"namespace"`
Type string `json:"type"`
ContainerPort int32 `json:"container_port"`
Port int32 `json:"port"`
NodePort int32 `json:"node_port"`
Label map[string]string `json:"label"`
}
// 获取service列表，支持过滤、排序、分页
func (s *servicev1) GetServices(filterName, namespace string, limit, page int) (servicesResp *ServicesResp, err error) {
//获取serviceList类型的service列表
serviceList, err := K8s.ClientSet.CoreV1().Services(namespace).List(context.TODO(), metav1.ListOptions{
})
if err != nil {
logger.Error(errors.New("获取Service列表失败, " + err.Error()))
return nil, errors.New("获取Service列表失败, " + err.Error())
}
//将serviceList中的service列表(Items)，放进dataselector对象中，进行排序
selectableData := &dataSelector{
GenericDataList: s.toCells(serviceList.Items),
DataSelect: &DataSelectQuery{
Filter: &FilterQuery{
Name: filterName},
Paginate: &PaginateQuery{
Limit: limit,
Page: page,
},
},
}
filtered := selectableData.Filter()
total := len(filtered.GenericDataList)
data := filtered.Sort().Paginate()
//将[]DataCell类型的service列表转为v1.service列表
services := s.fromCells(data.GenericDataList)
return &ServicesResp{
Items: services,
Total: total,
}, nil
}
// 获取service详情
func (s *servicev1) GetServicetDetail(serviceName, namespace string) (service *corev1.Service, err error) {
service, err = K8s.ClientSet.CoreV1().Services(namespace).Get(context.TODO(), serviceName, metav1.GetOptions{
})
if err != nil {
logger.Error(errors.New("获取Service详情失败, " + err.Error()))
return nil, errors.New("获取Service详情失败, " + err.Error())
}
return service, nil
}
// 创建service,,接收ServiceCreate对象
func (s *servicev1) CreateService(data *ServiceCreate) (err error) {
//将data中的数据组装成corev1.Service对象
service := &corev1.Service{
//ObjectMeta中定义资源名、命名空间以及标签
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
//Spec中定义类型，端口，选择器
Spec: corev1.ServiceSpec{
Type: corev1.ServiceType(data.Type),
Ports: []corev1.ServicePort{
{
Name: "http",
Port: data.Port,
Protocol: "TCP",
TargetPort: intstr.IntOrString{
Type: 0,
IntVal: data.ContainerPort,
},
},
},
Selector: data.Label,
},
}
//默认ClusterIP,这里是判断NodePort,添加配置
if data.NodePort != 0 && data.Type == "NodePort" {
service.Spec.Ports[0].NodePort = data.NodePort
}
//创建Service
_, err = K8s.ClientSet.CoreV1().Services(data.Namespace).Create(context.TODO(), service, metav1.CreateOptions{
})
if err != nil {
logger.Error(errors.New("创建Service失败, " + err.Error()))
return errors.New("创建Service失败, " + err.Error())
}
return nil
}
// 删除service
func (s *servicev1) DeleteService(serviceName, namespace string) (err error) {
err = K8s.ClientSet.CoreV1().Services(namespace).Delete(context.TODO(), serviceName, metav1.DeleteOptions{
})
if err != nil {
logger.Error(errors.New("删除Service失败, " + err.Error()))
return errors.New("删除Service失败, " + err.Error())
}
return nil
}
// 更新service
func (s *servicev1) UpdateService(namespace, content string) (err error) {
var service = &corev1.Service{
}
err = json.Unmarshal([]byte(content), service)
if err != nil {
logger.Error(errors.New("反序列化失败, " + err.Error()))
return errors.New("反序列化失败, " + err.Error())
}
_, err = K8s.ClientSet.CoreV1().Services(namespace).Update(context.TODO(), service, metav1.UpdateOptions{
})
if err != nil {
logger.Error(errors.New("更新service失败, " + err.Error()))
return errors.New("更新service失败, " + err.Error())
}
return nil
}
func (s *servicev1) toCells(std []corev1.Service) []DataCell {
cells := make([]DataCell, len(std))
for i := range std {
cells[i] = serviceCell(std[i])
}
return cells
}
func (s *servicev1) fromCells(cells []DataCell) []corev1.Service {
services := make([]corev1.Service, len(cells))
for i := range cells {
services[i] = corev1.Service(cells[i].(serviceCell))
}
return services
}
3. 获取Service列表
controller/service.go
package controller
import (
"github.com/gin-gonic/gin"
"github.com/wonderivan/logger"
"k8s-plantform/service"
"net/http"
)
var Servicev1 servicev1
type servicev1 struct {
}
//获取service列表，支持过滤、排序、分页
func(s *servicev1) GetServices(ctx *gin.Context) {
params := new(struct {
FilterName string `form:"filter_name"`
Namespace string `form:"namespace"`
Page int `form:"page"`
Limit int `form:"limit"`
})
if err := ctx.Bind(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
data, err := service.Servicev1.GetServices(params.FilterName, params.Namespace, params.Limit, params.Page)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "获取Servicet列表成功",
"data": data,
})
}
//获取service详情
func(s *servicev1) GetServiceDetail(ctx *gin.Context) {
params := new(struct {
ServiceName string `form:"service_name"`
Namespace string `form:"namespace"`
})
if err := ctx.Bind(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
data, err := service.Servicev1.GetServicetDetail(params.ServiceName, params.Namespace)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "获取Service详情成功",
"data": data,
})
}
//创建service
func(s *servicev1) CreateService(ctx *gin.Context) {
var (
serviceCreate = new(service.ServiceCreate)
err error
)
if err = ctx.ShouldBindJSON(serviceCreate); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
if err = service.Servicev1.CreateService(serviceCreate); err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "创建Service成功",
"data": nil,
})
}
//删除service
func(s *servicev1) DeleteService(ctx *gin.Context) {
params := new(struct{
ServiceName string `json:"service_name"`
Namespace string `json:"namespace"`
})
//DELETE请求，绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
err := service.Servicev1.DeleteService(params.ServiceName, params.Namespace)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "删除Service成功",
"data": nil,
})
}
//更新service
func(s *servicev1) UpdateService(ctx *gin.Context) {
params := new(struct{
Namespace string `json:"namespace"`
Content string `json:"content"`
})
//PUT请求，绑定参数方法改为ctx.ShouldBindJSON
if err := ctx.ShouldBindJSON(params); err != nil {
logger.Error("Bind请求参数失败, " + err.Error())
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
err := service.Servicev1.UpdateService(params.Namespace, params.Content)
if err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "更新Service成功",
"data": nil,
})
}
4. 定义路由
controller/router.go
//service操作
GET("/api/k8s/services", Servicev1.GetServices).
GET("/api/k8s/service/detail", Servicev1.GetServiceDetail).
DELETE("/api/k8s/service/del", Servicev1.DeleteService).
PUT("/api/k8s/service/update", Servicev1.UpdateService).
POST("/api/k8s/service/create", Servicev1.CreateService)
5. 测试Service方法
5.1 获取service
/api/k8s/services
5.2 获取service详情
/api/k8s/service/detail
5.3 删除service
/api/k8s/service/del
root@master-01:~# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.200.0.1 <none> 443/TCP 3d20h
my-nginx ClusterIP 10.200.3.78 <none> 80/TCP 3d17h
root@master-01:~# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.200.0.1 <none> 443/TCP 3d20h
5.4 更新service
/api/k8s/service/update
这个结合前端一起测
5.5 创建service
/api/k8s/service/create
这个结合前端一起测