server/pkg/loafer/app/app.go
2019-11-15 00:57:53 +09:00

78 lines
2.2 KiB
Go

package app
import (
"fmt"
"log"
"reflect"
"git.loafle.net/loafer/di-go"
appAnnotation "git.loafle.net/totopia/server/pkg/loafer/app/annotation"
webAnnotation "git.loafle.net/totopia/server/pkg/loafer/web/annotation"
"git.loafle.net/totopia/server/pkg/loafer/web/router"
"github.com/valyala/fasthttp"
)
type MethodMapping struct {
Method string
ParamKeys []string
}
func Run(t reflect.Type) error {
taServer := di.GetTypeAnnotation(t, appAnnotation.ServerAnnotationType)
if nil == taServer {
return fmt.Errorf("[%s] is not Server, use @app:Server", t.Elem().Name())
}
aServer := taServer.(*appAnnotation.ServerAnnotation)
log.Printf("%s %d", t.Elem().Name(), aServer.HTTPPort)
restHandlers, err := di.GetInstancesByAnnotationType(webAnnotation.RestHandlerAnnotationType)
if nil != err {
return fmt.Errorf("[%v]", err)
}
r := router.New()
for _, restHandler := range restHandlers {
rha := parseRestHandler(restHandler)
parseRequestMapping(rha, r, restHandler)
}
if err := fasthttp.ListenAndServe(fmt.Sprintf(":%d", aServer.HTTPPort), r.Handler); nil != err {
return err
}
return nil
}
func parseRestHandler(restHandler interface{}) *webAnnotation.RestHandlerAnnotation {
t := reflect.TypeOf(restHandler)
ta := di.GetTypeAnnotation(t, webAnnotation.RestHandlerAnnotationType)
if nil == ta {
log.Printf("Service[%s] is not RESTService, use @RESTService", t.Elem().Name())
return nil
}
return ta.(*webAnnotation.RestHandlerAnnotation)
}
func parseRequestMapping(rha *webAnnotation.RestHandlerAnnotation, r *router.Router, restHandler interface{}) {
t := reflect.TypeOf(restHandler)
mas := di.GetMethodAnnotations(t, webAnnotation.RequestMappingAnnotationType)
if nil == mas || 0 == len(mas) {
return
}
mf := func(rh interface{}, mn string) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
reflect.ValueOf(rh).MethodByName(mn).Call([]reflect.Value{reflect.ValueOf(ctx)})
}
}
for methodName, v := range mas {
ma := v.(*webAnnotation.RequestMappingAnnotation)
entry := fmt.Sprintf("%s%s", rha.Entry, ma.Entry)
log.Printf("methodName %s entry %s", methodName, entry)
r.Handle(ma.Method, entry, mf(restHandler, methodName))
}
}