golang实现拦截器方案

1. 在主函数文件或者路由配置文件引入gin包

   import “github.com/gin-gonic/gin”
   

2. 编写拦截器代码

   func checkToken(c *gin.Context) {
      fmt.Println("进入拦截器")
      // 编写过滤的逻辑，token校验等
      //  c.Next():放行执行后续动作  c.Abort():不执行后续动作
      c.Next()
   }
   

3. 路由配置，并使用该拦截器，releases.Use(checkToken)，有配置的接口才会生效

   router := gin.Default()
   router.GET("/", func(c *gin.Context) {
      c.String(http.StatusOK, "Welcome helm wrapper server")
   })
   // register router
   	RegisterRouter(router)
   

   func RegisterRouter(router *gin.Engine) {
      // helm chart
      charts := router.Group("/api/charts")
      {
         // helm show
         charts.GET("", showChartInfo)
         // upload chart
         charts.POST("/upload", uploadChart)
         // list uploaded charts
         charts.GET("/upload", listUploadedCharts)
         // delete chart
         charts.DELETE("/upload/:chart", deleteChart)
      }
      // helm release
      releases := router.Group("/api/namespaces/:namespace/releases")
      {
         // 使用指定拦截器 
         releases.Use(checkToken)
         // helm list releases ->  helm list
         releases.GET("", listReleases)
         // helm get
         releases.GET("/:release", showReleaseInfo)
         // helm install
         releases.POST("/:release", installRelease)
         // helm upgrade
         releases.PUT("/:release", upgradeRelease)
      }
   }