K8s 管理系统项目[API部分–Configmap]

1. 接口实现

service/dataselector.go

// configmap
type configMapCell corev1.ConfigMap

func (c configMapCell) GetCreation() time.Time {
	return c.CreationTimestamp.Time
}

func (c configMapCell) GetName() string {
	return c.Name
}

2. Configmap功能

service/configmap.go

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"
)

var ConfigMap configMap

type configMap struct{}

type ConfigMapsResp struct {
	Items []corev1.ConfigMap `json:"items"`
	Total int                `json:"total"`
}

// 获取configmap列表，支持过滤、排序、分页
func (c *configMap) GetConfigMaps(filterName, namespace string, limit, page int) (configMapsResp *ConfigMapsResp, err error) {
	//获取configMapList类型的configMap列表
	configMapList, err := K8s.ClientSet.CoreV1().ConfigMaps(namespace).List(context.TODO(), metav1.ListOptions{})
	if err != nil {
		logger.Error(errors.New("获取ConfigMap列表失败, " + err.Error()))
		return nil, errors.New("获取ConfigMap列表失败, " + err.Error())
	}
	//将configMapList中的configMap列表(Items)，放进dataselector对象中，进行排序
	selectableData := &dataSelector{
		GenericDataList: c.toCells(configMapList.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configmap列表转为v1.configmap列表
	configMaps := c.fromCells(data.GenericDataList)

	return &ConfigMapsResp{
		Items: configMaps,
		Total: total,
	}, nil
}

// 获取configmap详情
func (c *configMap) GetConfigMapDetail(configMapName, namespace string) (configMap *corev1.ConfigMap, err error) {
	configMap, err = K8s.ClientSet.CoreV1().ConfigMaps(namespace).Get(context.TODO(), configMapName, metav1.GetOptions{})
	if err != nil {
		logger.Error(errors.New("获取ConfigMap详情失败, " + err.Error()))
		return nil, errors.New("获取ConfigMap详情失败, " + err.Error())
	}

	return configMap, nil
}

// 删除configmap
func (c *configMap) DeleteConfigMap(configMapName, namespace string) (err error) {
	err = K8s.ClientSet.CoreV1().ConfigMaps(namespace).Delete(context.TODO(), configMapName, metav1.DeleteOptions{})
	if err != nil {
		logger.Error(errors.New("删除ConfigMap失败, " + err.Error()))
		return errors.New("删除ConfigMap失败, " + err.Error())
	}

	return nil
}

// 更新configmap
func (c *configMap) UpdateConfigMap(namespace, content string) (err error) {
	var configMap = &corev1.ConfigMap{}

	err = json.Unmarshal([]byte(content), configMap)
	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().ConfigMaps(namespace).Update(context.TODO(), configMap, metav1.UpdateOptions{})
	if err != nil {
		logger.Error(errors.New("更新ConfigMap失败, " + err.Error()))
		return errors.New("更新ConfigMap失败, " + err.Error())
	}
	return nil
}

func (c *configMap) toCells(std []corev1.ConfigMap) []DataCell {
	cells := make([]DataCell, len(std))
	for i := range std {
		cells[i] = configMapCell(std[i])
	}
	return cells
}

func (c *configMap) fromCells(cells []DataCell) []corev1.ConfigMap {
	configMaps := make([]corev1.ConfigMap, len(cells))
	for i := range cells {
		configMaps[i] = corev1.ConfigMap(cells[i].(configMapCell))
	}

	return configMaps
}

3. 获取Configmap列表

controller/configmap.go

package controller

import (
	"k8s-plantform/service"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/wonderivan/logger"
)

var ConfigMap configMap

type configMap struct{}

// 获取configmap列表，支持过滤、排序、分页
func (c *configMap) GetConfigMaps(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.ConfigMap.GetConfigMaps(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ConfigMap列表成功",
		"data": data,
	})
}

// 获取configmap详情
func (c *configMap) GetConfigMapDetail(ctx *gin.Context) {
	params := new(struct {
		ConfigMapName string `form:"configmap_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.ConfigMap.GetConfigMapDetail(params.ConfigMapName, 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ConfigMap详情成功",
		"data": data,
	})
}

// 删除configmap
func (c *configMap) DeleteConfigMap(ctx *gin.Context) {
	params := new(struct {
		ConfigMapName string `json:"configmap_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.ConfigMap.DeleteConfigMap(params.ConfigMapName, 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ConfigMap成功",
		"data": nil,
	})
}

// 更新configmap
func (c *configMap) UpdateConfigMap(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.ConfigMap.UpdateConfigMap(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ConfigMap成功",
		"data": nil,
	})
}

4. 定义路由

controller/router.go

		// Configmaps
		GET("/api/k8s/configmaps", ConfigMap.GetConfigMaps).
		GET("/api/k8s/configmap/detail", ConfigMap.GetConfigMapDetail).
		DELETE("/api/k8s/configmap/del", ConfigMap.DeleteConfigMap).
		PUT("/api/k8s/configmap/update", ConfigMap.UpdateConfigMap)

5. 测试Configmap方法

5.1 获取Configmap

5.2 获取Configmap详情

其余等做好前端一起测试