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nnet/core/router.go

83 lines
1.6 KiB
Go

package core
import (
"git.noahlan.cn/noahlan/nnet/entity"
"git.noahlan.cn/noahlan/nnet/packet"
)
type (
Route struct {
Matches interface{} // 用于匹配的关键字段
Handler HandlerFunc // 处理方法
}
Router interface {
Handler
Register(matches interface{}, handler Handler) error
SetNotFoundHandler(handler Handler)
}
Constructor func(Handler) Handler
)
type Chain struct {
constructors []Constructor
}
func newChain(constructors ...Constructor) Chain {
return Chain{append(([]Constructor)(nil), constructors...)}
}
func (c Chain) Then(h Handler) Handler {
// TODO nil
for i := range c.constructors {
h = c.constructors[len(c.constructors)-1-i](h)
}
return h
}
func (c Chain) ThenFunc(fn HandlerFunc) Handler {
if fn == nil {
return c.Then(nil)
}
return c.Then(fn)
}
func (c Chain) Append(constructors ...Constructor) Chain {
newCons := make([]Constructor, 0, len(c.constructors)+len(constructors))
newCons = append(newCons, c.constructors...)
newCons = append(newCons, constructors...)
return Chain{newCons}
}
func (c Chain) Extend(chain Chain) Chain {
return c.Append(chain.constructors...)
}
type plainRouter struct {
handler Handler
notFound Handler
}
func NewDefaultRouter() Router {
return &plainRouter{}
}
func (p *plainRouter) Handle(entity entity.NetworkEntity, pkg packet.IPacket) {
if p.handler == nil {
return
}
p.handler.Handle(entity, pkg)
}
func (p *plainRouter) Register(_ interface{}, handler Handler) error {
p.handler = handler
return nil
}
func (p *plainRouter) SetNotFoundHandler(handler Handler) {
p.notFound = handler
}