K8s 管理系统项目[API部分–Ingress]
1. 接口实现
service/dataselector.go
import (
"sort"
"strings"
"time"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
nwv1 "k8s.io/api/networking/v1"
)
// Ingress
type ingressCell nwv1.Ingress
func(i ingressCell) GetCreation() time.Time {
return i.CreationTimestamp.Time
}
func(i ingressCell) GetName() string {
return i.Name
}
2. Ingress功能
service/ingress.go
2.1 获取Ingress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Ingress
// 创建ingress
func (i *ingress) CreateIngress(data *IngressCreate) (err error) {
//声明nwv1.IngressRule和nwv1.HTTPIngressPath变量，后面组装数据于鏊用到
var ingressRules []nwv1.IngressRule
var httpIngressPATHs []nwv1.HTTPIngressPath
//将data中的数据组装成nwv1.Ingress对象
ingress := &nwv1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
Status: nwv1.IngressStatus{
},
}
//第一层for循环是将host组装成nwv1.IngressRule类型的对象
// 一个host对应一个ingressrule，每个ingressrule中包含一个host和多个path
for key, value := range data.Hosts {
ir := nwv1.IngressRule{
Host: key,
//这里现将nwv1.HTTPIngressRuleValue类型中的Paths置为空，后面组装好数据再赋值
IngressRuleValue: nwv1.IngressRuleValue{
HTTP: &nwv1.HTTPIngressRuleValue{
Paths: nil},
},
}
//第二层for循环是将path组装成nwv1.HTTPIngressPath类型的对象
for _, httpPath := range value {
hip := nwv1.HTTPIngressPath{
Path: httpPath.Path,
PathType: &httpPath.PathType,
Backend: nwv1.IngressBackend{
Service: &nwv1.IngressServiceBackend{
Name: httpPath.ServiceName,
Port: nwv1.ServiceBackendPort{
Number: httpPath.ServicePort,
},
},
},
}
//将每个hip对象组装成数组
httpIngressPATHs = append(httpIngressPATHs, hip)
}
//给Paths赋值，前面置为空了
ir.IngressRuleValue.HTTP.Paths = httpIngressPATHs
//将每个ir对象组装成数组，这个ir对象就是IngressRule，每个元素是一个host和多个path
ingressRules = append(ingressRules, ir)
}
//将ingressRules对象加入到ingress的规则中
ingress.Spec.Rules = ingressRules
//创建ingress
_, err = K8s.ClientSet.NetworkingV1().Ingresses(data.Namespace).Create(context.TODO(), ingress, metav1.CreateOptions{
})
if err != nil {
logger.Error(errors.New("创建Ingress失败, " + err.Error()))
return errors.New("创建Ingress失败, " + err.Error())
}
return nil
}
2.3 删除Ingress
// 删除ingress
func (i *ingress) DeleteIngress(ingressName, namespace string) (err error) {
err = K8s.ClientSet.NetworkingV1().Ingresses(namespace).Delete(context.TODO(), ingressName, metav1.DeleteOptions{
})
if err != nil {
logger.Error(errors.New("删除Ingress失败, " + err.Error()))
return errors.New("删除Ingress失败, " + err.Error())
}
return nil
}
2.4 更新Ingress
// 更新ingress
func (i *ingress) UpdateIngress(namespace, content string) (err error) {
var ingress = &nwv1.Ingress{
}
err = json.Unmarshal([]byte(content), ingress)
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.NetworkingV1().Ingresses(namespace).Update(context.TODO(), ingress, metav1.UpdateOptions{
})
if err != nil {
logger.Error(errors.New("更新ingress失败, " + err.Error()))
return errors.New("更新ingress失败, " + err.Error())
}
return nil
}
2.5 Ingress完整
package service
import (
"context"
"encoding/json"
"errors"
"github.com/wonderivan/logger"
nwv1 "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
var Ingress ingress
type ingress struct{
}
type IngressesResp struct {
Items []nwv1.Ingress `json:"items"`
Total int `json:"total"`
}
// 定义ServiceCreate结构体，用于创建service需要的参数属性的定义
type IngressCreate struct {
Name string `json:"name"`
Namespace string `json:"namespace"`
Label map[string]string `json:"label"`
Hosts map[string][]*HttpPath `json:"hosts"`
}
// 定义ingress的path结构体
type HttpPath struct {
Path string `json:"path"`
PathType nwv1.PathType `json:"path_type"`
ServiceName string `json:"service_name"`
ServicePort int32 `json:"service_port"`
}
// 获取ingress列表，支持过滤、排序、分页
func (i *ingress) GetIngresses(filterName, namespace string, limit, page int) (ingressesResp *IngressesResp, err error) {
//获取ingressList类型的ingress列表
ingressList, err := K8s.ClientSet.NetworkingV1().Ingresses(namespace).List(context.TODO(), metav1.ListOptions{
})
if err != nil {
logger.Error(errors.New("获取Ingress列表失败, " + err.Error()))
return nil, errors.New("获取Ingress列表失败, " + err.Error())
}
//将ingressList中的ingress列表(Items)，放进dataselector对象中，进行排序
selectableData := &dataSelector{
GenericDataList: i.toCells(ingressList.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ingress列表转为v1.ingress列表
ingresss := i.fromCells(data.GenericDataList)
return &IngressesResp{
Items: ingresss,
Total: total,
}, nil
}
// 获取ingress详情
func (i *ingress) GetIngresstDetail(ingressName, namespace string) (ingress *nwv1.Ingress, err error) {
ingress, err = K8s.ClientSet.NetworkingV1().Ingresses(namespace).Get(context.TODO(), ingressName, metav1.GetOptions{
})
if err != nil {
logger.Error(errors.New("获取Ingress详情失败, " + err.Error()))
return nil, errors.New("获取Ingress详情失败, " + err.Error())
}
return ingress, nil
}
// 创建ingress
func (i *ingress) CreateIngress(data *IngressCreate) (err error) {
//声明nwv1.IngressRule和nwv1.HTTPIngressPath变量，后面组装数据于鏊用到
var ingressRules []nwv1.IngressRule
var httpIngressPATHs []nwv1.HTTPIngressPath
//将data中的数据组装成nwv1.Ingress对象
ingress := &nwv1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: data.Name,
Namespace: data.Namespace,
Labels: data.Label,
},
Status: nwv1.IngressStatus{
},
}
//第一层for循环是将host组装成nwv1.IngressRule类型的对象
// 一个host对应一个ingressrule，每个ingressrule中包含一个host和多个path
for key, value := range data.Hosts {
ir := nwv1.IngressRule{
Host: key,
//这里现将nwv1.HTTPIngressRuleValue类型中的Paths置为空，后面组装好数据再赋值
IngressRuleValue: nwv1.IngressRuleValue{
HTTP: &nwv1.HTTPIngressRuleValue{
Paths: nil},
},
}
//第二层for循环是将path组装成nwv1.HTTPIngressPath类型的对象
for _, httpPath := range value {
hip := nwv1.HTTPIngressPath{
Path: httpPath.Path,
PathType: &httpPath.PathType,
Backend: nwv1.IngressBackend{
Service: &nwv1.IngressServiceBackend{
Name: httpPath.ServiceName,
Port: nwv1.ServiceBackendPort{
Number: httpPath.ServicePort,
},
},
},
}
//将每个hip对象组装成数组
httpIngressPATHs = append(httpIngressPATHs, hip)
}
//给Paths赋值，前面置为空了
ir.IngressRuleValue.HTTP.Paths = httpIngressPATHs
//将每个ir对象组装成数组，这个ir对象就是IngressRule，每个元素是一个host和多个path
ingressRules = append(ingressRules, ir)
}
//将ingressRules对象加入到ingress的规则中
ingress.Spec.Rules = ingressRules
//创建ingress
_, err = K8s.ClientSet.NetworkingV1().Ingresses(data.Namespace).Create(context.TODO(), ingress, metav1.CreateOptions{
})
if err != nil {
logger.Error(errors.New("创建Ingress失败, " + err.Error()))
return errors.New("创建Ingress失败, " + err.Error())
}
return nil
}
// 删除ingress
func (i *ingress) DeleteIngress(ingressName, namespace string) (err error) {
err = K8s.ClientSet.NetworkingV1().Ingresses(namespace).Delete(context.TODO(), ingressName, metav1.DeleteOptions{
})
if err != nil {
logger.Error(errors.New("删除Ingress失败, " + err.Error()))
return errors.New("删除Ingress失败, " + err.Error())
}
return nil
}
// 更新ingress
func (i *ingress) UpdateIngress(namespace, content string) (err error) {
var ingress = &nwv1.Ingress{
}
err = json.Unmarshal([]byte(content), ingress)
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.NetworkingV1().Ingresses(namespace).Update(context.TODO(), ingress, metav1.UpdateOptions{
})
if err != nil {
logger.Error(errors.New("更新ingress失败, " + err.Error()))
return errors.New("更新ingress失败, " + err.Error())
}
return nil
}
func (i *ingress) toCells(std []nwv1.Ingress) []DataCell {
cells := make([]DataCell, len(std))
for i := range std {
cells[i] = ingressCell(std[i])
}
return cells
}
func (i *ingress) fromCells(cells []DataCell) []nwv1.Ingress {
ingresss := make([]nwv1.Ingress, len(cells))
for i := range cells {
ingresss[i] = nwv1.Ingress(cells[i].(ingressCell))
}
return ingresss
}
3. 获取Ingress列表
controller/ingress.go
package controller
import (
"github.com/gin-gonic/gin"
"github.com/wonderivan/logger"
"k8s-plantform/service"
"net/http"
)
var Ingress ingress
type ingress struct {
}
//获取ingress列表，支持过滤、排序、分页
func(i *ingress) GetIngresses(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.Ingress.GetIngresses(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Ingresst列表成功",
"data": data,
})
}
//获取ingress详情
func(i *ingress) GetIngressDetail(ctx *gin.Context) {
params := new(struct {
IngressName string `form:"ingress_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.Ingress.GetIngresstDetail(params.IngressName, 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Ingress详情成功",
"data": data,
})
}
//删除ingress
func(i *ingress) DeleteIngress(ctx *gin.Context) {
params := new(struct{
IngressName string `json:"ingress_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.Ingress.DeleteIngress(params.IngressName, 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Ingress成功",
"data": nil,
})
}
//创建ingress
func(i *ingress) CreateIngress(ctx *gin.Context) {
var (
ingressCreate = new(service.IngressCreate)
err error
)
if err = ctx.ShouldBindJSON(ingressCreate); 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.Ingress.CreateIngress(ingressCreate); err != nil {
ctx.JSON(http.StatusInternalServerError, gin.H{
"msg": err.Error(),
"data": nil,
})
return
}
ctx.JSON(http.StatusOK, gin.H{
"msg": "创建Ingress成功",
"data": nil,
})
}
//更新ingress
func(i *ingress) UpdateIngress(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.Ingress.UpdateIngress(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Ingress成功",
"data": nil,
})
}
4. 定义路由
controller/router.go
//ingress操作
GET("/api/k8s/ingresses", Ingress.GetIngresses).
GET("/api/k8s/ingress/detail", Ingress.GetIngressDetail).
DELETE("/api/k8s/ingress/del", Ingress.DeleteIngress).
PUT("/api/k8s/ingress/update", Ingress.UpdateIngress).
POST("/api/k8s/ingress/create", Ingress.CreateIngress)
5. 测试Ingress方法
5.1 获取Ingress
/api/k8s/ingresses
5.2 获取Ingress详情
/api/k8s/ingress/detail
5.3 删除Ingress
/api/k8s/ingress/del
root@master-01:~# kubectl get ingress -n wework
NAME CLASS HOSTS ADDRESS PORTS AGE
nginx-web <none> pana.intra.com 192.168.31.51,192.168.31.52 80 3d21h
root@master-01:~# kubectl get ingress -n wework
No resources found in wework namespace.
5.4 更新Ingress
/api/k8s/ingress/update
这个结合前端一起测
5.5 创建Ingress
/api/k8s/ingress/create
这个结合前端一起测