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在我的项目中咱们很多时候会对一组的路由进行解决,咱们应该如何实现这个性能呢。目前来说,咱们进行的都是单个路由的解决。
分组的实现
明天的内容不是很多,咱们对 router 文件进行改在。
在分组的时候,给每个组要用本人的中间件,也就是共有的中间件,所以咱们首先实现一个构造体
type RouterGroup struct {
prefix string
middlewares []HandlerFunc // support middleware
parent *RouterGroup // support nesting
engine *Engine // all groups share a Engine instance
}
而后 engine 要实现所以的性能,所以咱们要进行一个革新:
func New() *Engine {engine := &Engine{router: newRouter()}
engine.RouterGroup = &RouterGroup{engine: engine}
engine.groups = []*RouterGroup{engine.RouterGroup}
return engine
}
而后上面是咱们是咱们总体的代码:
package gee
import (
"log"
"net/http"
)
type RouterGroup struct {
prefix string
middlewares []HandlerFunc // support middleware
parent *RouterGroup // support nesting
engine *Engine // all groups share a Engine instance
}
// HandlerFunc defines the request handler used by gee
type HandlerFunc func(*Context)
// Engine implement the interface of ServeHTTP
type Engine struct {
*RouterGroup
router *router
groups []*RouterGroup // store all groups}
// New is the constructor of gee.Engine
func New() *Engine {engine := &Engine{router: newRouter()}
engine.RouterGroup = &RouterGroup{engine: engine}
engine.groups = []*RouterGroup{engine.RouterGroup}
return engine
}
// Group is defined to create a new RouterGroup
// remember all groups share the same Engine instance
func (group *RouterGroup) Group(prefix string) *RouterGroup {
engine := group.engine
newGroup := &RouterGroup{
prefix: group.prefix + prefix,
parent: group,
engine: engine,
}
engine.groups = append(engine.groups, newGroup)
return newGroup
}
func (group *RouterGroup) addRoute(method string, comp string, handler HandlerFunc) {
pattern := group.prefix + comp
log.Printf("Route %4s - %s", method, pattern)
group.engine.router.addRoute(method, pattern, handler)
}
// GET defines the method to add GET request
func (group *RouterGroup) GET(pattern string, handler HandlerFunc) {group.addRoute("GET", pattern, handler)
}
// POST defines the method to add POST request
func (group *RouterGroup) POST(pattern string, handler HandlerFunc) {group.addRoute("POST", pattern, handler)
}
// Run defines the method to start a http server
func (engine *Engine) Run(addr string) (err error) {return http.ListenAndServe(addr, engine)
}
// 这里就是最初的处理函数,这里开始建设的上下文。func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request) {c := newContext(w, req)
engine.router.handle(c)
}
正文完