示例#1
0
文件: router.go 项目: lamproae/beegae
// Implement http.Handler interface.
func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
	starttime := time.Now()
	var runrouter reflect.Type
	var findrouter bool
	var runMethod string
	var routerInfo *controllerInfo

	w := &responseWriter{writer: rw}

	if RunMode == "dev" {
		w.Header().Set("Server", BeegoServerName)
	}

	// init context
	context := &beecontext.Context{
		ResponseWriter: w,
		Request:        r,
		Input:          beecontext.NewInput(r),
		Output:         beecontext.NewOutput(),
	}
	context.Output.Context = context
	context.Output.EnableGzip = EnableGzip

	defer p.recoverPanic(context)

	var urlPath string
	if !RouterCaseSensitive {
		urlPath = strings.ToLower(r.URL.Path)
	} else {
		urlPath = r.URL.Path
	}
	// defined filter function
	do_filter := func(pos int) (started bool) {
		if p.enableFilter {
			if l, ok := p.filters[pos]; ok {
				for _, filterR := range l {
					if filterR.returnOnOutput && w.started {
						return true
					}
					if ok, params := filterR.ValidRouter(urlPath); ok {
						for k, v := range params {
							if context.Input.Params == nil {
								context.Input.Params = make(map[string]string)
							}
							context.Input.Params[k] = v
						}
						filterR.filterFunc(context)
					}
					if filterR.returnOnOutput && w.started {
						return true
					}
				}
			}
		}
		return false
	}

	// filter wrong httpmethod
	if _, ok := HTTPMETHOD[r.Method]; !ok {
		http.Error(w, "Method Not Allowed", 405)
		goto Admin
	}

	// session init
	if SessionOn {
		var err error
		context.Input.CruSession, err = GlobalSessions.SessionStart(w, r)
		if err != nil {
			Error(err)
			exception("503", context)
			return
		}
		defer func() {
			context.Input.CruSession.SessionRelease(w)
		}()
	}

	if r.Method != "GET" && r.Method != "HEAD" {
		if CopyRequestBody && !context.Input.IsUpload() {
			context.Input.CopyBody()
		}
		context.Input.ParseFormOrMulitForm(MaxMemory)
	}

	if do_filter(BeforeRouter) {
		goto Admin
	}

	if context.Input.RunController != nil && context.Input.RunMethod != "" {
		findrouter = true
		runMethod = context.Input.RunMethod
		runrouter = context.Input.RunController
	}

	if !findrouter {
		http_method := r.Method

		if http_method == "POST" && context.Input.Query("_method") == "PUT" {
			http_method = "PUT"
		}

		if http_method == "POST" && context.Input.Query("_method") == "DELETE" {
			http_method = "DELETE"
		}

		if t, ok := p.routers[http_method]; ok {
			runObject, p := t.Match(urlPath)
			if r, ok := runObject.(*controllerInfo); ok {
				routerInfo = r
				findrouter = true
				if splat, ok := p[":splat"]; ok {
					splatlist := strings.Split(splat, "/")
					for k, v := range splatlist {
						p[strconv.Itoa(k)] = v
					}
				}
				if p != nil {
					context.Input.Params = p
				}
			}
		}

	}

	//if no matches to url, throw a not found exception
	if !findrouter {
		exception("404", context)
		goto Admin
	}

	if findrouter {
		//execute middleware filters
		if do_filter(BeforeExec) {
			goto Admin
		}
		isRunable := false
		if routerInfo != nil {
			if routerInfo.routerType == routerTypeRESTFul {
				if _, ok := routerInfo.methods[r.Method]; ok {
					isRunable = true
					routerInfo.runfunction(context)
				} else {
					exception("405", context)
					goto Admin
				}
			} else if routerInfo.routerType == routerTypeHandler {
				isRunable = true
				routerInfo.handler.ServeHTTP(rw, r)
			} else {
				runrouter = routerInfo.controllerType
				method := r.Method
				if r.Method == "POST" && context.Input.Query("_method") == "PUT" {
					method = "PUT"
				}
				if r.Method == "POST" && context.Input.Query("_method") == "DELETE" {
					method = "DELETE"
				}
				if m, ok := routerInfo.methods[method]; ok {
					runMethod = m
				} else if m, ok = routerInfo.methods["*"]; ok {
					runMethod = m
				} else {
					runMethod = method
				}
			}
		}

		// also defined runrouter & runMethod from filter
		if !isRunable {
			//Invoke the request handler
			vc := reflect.New(runrouter)
			execController, ok := vc.Interface().(ControllerInterface)
			if !ok {
				panic("controller is not ControllerInterface")
			}

			//call the controller init function
			execController.Init(context, runrouter.Name(), runMethod, vc.Interface())

			//call prepare function
			execController.Prepare()

			//if XSRF is Enable then check cookie where there has any cookie in the  request's cookie _csrf
			if EnableXSRF {
				execController.XsrfToken()
				if r.Method == "POST" || r.Method == "DELETE" || r.Method == "PUT" ||
					(r.Method == "POST" && (context.Input.Query("_method") == "DELETE" || context.Input.Query("_method") == "PUT")) {
					execController.CheckXsrfCookie()
				}
			}

			execController.URLMapping()

			if !w.started {
				//exec main logic
				switch runMethod {
				case "GET":
					execController.Get()
				case "POST":
					execController.Post()
				case "DELETE":
					execController.Delete()
				case "PUT":
					execController.Put()
				case "HEAD":
					execController.Head()
				case "PATCH":
					execController.Patch()
				case "OPTIONS":
					execController.Options()
				default:
					if !execController.HandlerFunc(runMethod) {
						in := make([]reflect.Value, 0)
						method := vc.MethodByName(runMethod)
						method.Call(in)
					}
				}

				//render template
				if !w.started && context.Output.Status == 0 {
					if AutoRender {
						if err := execController.Render(); err != nil {
							panic(err)
						}
					}
				}
			}

			// finish all runrouter. release resource
			execController.Finish()
		}

		//execute middleware filters
		if do_filter(AfterExec) {
			goto Admin
		}
	}

	do_filter(FinishRouter)

Admin:
	timeend := time.Since(starttime)

	if RunMode == "dev" || AccessLogs {
		var devinfo string
		if findrouter {
			if routerInfo != nil {
				devinfo = fmt.Sprintf("| % -10s | % -40s | % -16s | % -10s | % -40s |", r.Method, r.URL.Path, timeend.String(), "match", routerInfo.pattern)
			} else {
				devinfo = fmt.Sprintf("| % -10s | % -40s | % -16s | % -10s |", r.Method, r.URL.Path, timeend.String(), "match")
			}
		} else {
			devinfo = fmt.Sprintf("| % -10s | % -40s | % -16s | % -10s |", r.Method, r.URL.Path, timeend.String(), "notmatch")
		}
		if DefaultLogFilter == nil || !DefaultLogFilter.Filter(context) {
			Debug(devinfo)
		}
	}

	// Call WriteHeader if status code has been set changed
	if context.Output.Status != 0 {
		w.writer.WriteHeader(context.Output.Status)
	}
}
示例#2
0
文件: router.go 项目: someone1/beegae
// Implement http.Handler interface.
func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
	defer func() {
		if err := recover(); err != nil {
			if err == USERSTOPRUN {
				return
			}
			if _, ok := err.(middleware.HTTPException); ok {
				// catch intented errors, only for HTTP 4XX and 5XX
			} else {
				if RunMode == "dev" {
					if !RecoverPanic {
						panic(err)
					} else {
						if ErrorsShow {
							if handler, ok := middleware.ErrorMaps[fmt.Sprint(err)]; ok {
								handler(rw, r)
								return
							}
						}
						var stack string
						Critical("the request url is ", r.URL.Path)
						Critical("Handler crashed with error", err)
						for i := 1; ; i++ {
							_, file, line, ok := runtime.Caller(i)
							if !ok {
								break
							}
							Critical(file, line)
							stack = stack + fmt.Sprintln(file, line)
						}
						middleware.ShowErr(err, rw, r, stack)
					}
				} else {
					if !RecoverPanic {
						panic(err)
					} else {
						// in production model show all infomation
						if ErrorsShow {
							handler := p.getErrorHandler(fmt.Sprint(err))
							handler(rw, r)
							return
						} else {
							Critical("the request url is ", r.URL.Path)
							Critical("Handler crashed with error", err)
							for i := 1; ; i++ {
								_, file, line, ok := runtime.Caller(i)
								if !ok {
									break
								}
								Critical(file, line)
							}
						}
					}
				}

			}
		}
	}()

	starttime := time.Now()
	requestPath := r.URL.Path
	var runrouter reflect.Type
	var findrouter bool
	var runMethod string
	params := make(map[string]string)

	w := &responseWriter{writer: rw}
	w.Header().Set("Server", BeegoServerName)

	// init context
	context := &beecontext.Context{
		ResponseWriter: w,
		Request:        r,
		Input:          beecontext.NewInput(r),
		Output:         beecontext.NewOutput(),
	}
	context.Output.Context = context
	context.Output.EnableGzip = EnableGzip

	if context.Input.IsWebsocket() {
		context.ResponseWriter = rw
	}

	// defined filter function
	do_filter := func(pos int) (started bool) {
		if p.enableFilter {
			if l, ok := p.filters[pos]; ok {
				for _, filterR := range l {
					if ok, p := filterR.ValidRouter(r.URL.Path); ok {
						context.Input.Params = p
						filterR.filterFunc(context)
						if w.started {
							return true
						}
					}
				}
			}
		}

		return false
	}

	// session init
	if SessionOn {
		context.Input.CruSession = GlobalSessions.SessionStart(w, r)
		defer context.Input.CruSession.SessionRelease()
	}

	if !utils.InSlice(strings.ToLower(r.Method), HTTPMETHOD) {
		http.Error(w, "Method Not Allowed", 405)
		goto Admin
	}

	if do_filter(BeforeRouter) {
		goto Admin
	}

	//static file server
	for prefix, staticDir := range StaticDir {
		if r.URL.Path == "/favicon.ico" {
			file := staticDir + r.URL.Path
			http.ServeFile(w, r, file)
			w.started = true
			goto Admin
		}
		if strings.HasPrefix(r.URL.Path, prefix) {
			file := staticDir + r.URL.Path[len(prefix):]
			finfo, err := os.Stat(file)
			if err != nil {
				if RunMode == "dev" {
					Warn(err)
				}
				http.NotFound(w, r)
				goto Admin
			}
			//if the request is dir and DirectoryIndex is false then
			if finfo.IsDir() && !DirectoryIndex {
				middleware.Exception("403", rw, r, "403 Forbidden")
				goto Admin
			}

			//This block obtained from (https://github.com/smithfox/beego) - it should probably get merged into astaxie/beego after a pull request
			isStaticFileToCompress := false
			if StaticExtensionsToGzip != nil && len(StaticExtensionsToGzip) > 0 {
				for _, statExtension := range StaticExtensionsToGzip {
					if strings.HasSuffix(strings.ToLower(file), strings.ToLower(statExtension)) {
						isStaticFileToCompress = true
						break
					}
				}
			}

			if isStaticFileToCompress {
				if EnableGzip {
					w.contentEncoding = GetAcceptEncodingZip(r)
				}

				memzipfile, err := OpenMemZipFile(file, w.contentEncoding)
				if err != nil {
					return
				}

				w.InitHeadContent(finfo.Size())

				http.ServeContent(w, r, file, finfo.ModTime(), memzipfile)
			} else {
				http.ServeFile(w, r, file)
			}

			w.started = true
			goto Admin
		}
	}

	if do_filter(AfterStatic) {
		goto Admin
	}

	if CopyRequestBody {
		context.Input.Body()
	}

	//first find path from the fixrouters to Improve Performance
	for _, route := range p.fixrouters {
		n := len(requestPath)
		if requestPath == route.pattern {
			runMethod = p.getRunMethod(r.Method, context, route)
			if runMethod != "" {
				runrouter = route.controllerType
				findrouter = true
				break
			}
		}
		// pattern /admin   url /admin 200  /admin/ 200
		// pattern /admin/  url /admin 301  /admin/ 200
		if requestPath[n-1] != '/' && len(route.pattern) == n+1 &&
			route.pattern[n] == '/' && route.pattern[:n] == requestPath {
			http.Redirect(w, r, requestPath+"/", 301)
			goto Admin
		}
		if requestPath[n-1] == '/' && n >= 2 && requestPath[:n-2] == route.pattern {
			runMethod = p.getRunMethod(r.Method, context, route)
			if runMethod != "" {
				runrouter = route.controllerType
				findrouter = true
				break
			}
		}
	}

	//find regex's router
	if !findrouter {
		//find a matching Route
		for _, route := range p.routers {

			//check if Route pattern matches url
			if !route.regex.MatchString(requestPath) {
				continue
			}

			//get submatches (params)
			matches := route.regex.FindStringSubmatch(requestPath)

			//double check that the Route matches the URL pattern.
			if len(matches[0]) != len(requestPath) {
				continue
			}

			if len(route.params) > 0 {
				//add url parameters to the query param map
				values := r.URL.Query()
				for i, match := range matches[1:] {
					values.Add(route.params[i], match)
					params[route.params[i]] = match
				}
				//reassemble query params and add to RawQuery
				r.URL.RawQuery = url.Values(values).Encode()
			}
			runMethod = p.getRunMethod(r.Method, context, route)
			if runMethod != "" {
				runrouter = route.controllerType
				context.Input.Params = params
				findrouter = true
				break
			}
		}
	}

	if !findrouter && p.enableAuto {
		// deal with url with diffirent ext
		// /controller/simple
		// /controller/simple.html
		// /controller/simple.json
		// /controller/simple.rss
		lastindex := strings.LastIndex(requestPath, "/")
		lastsub := requestPath[lastindex+1:]
		if subindex := strings.LastIndex(lastsub, "."); subindex != -1 {
			context.Input.Params[":ext"] = lastsub[subindex+1:]
			r.URL.Query().Add(":ext", lastsub[subindex+1:])
			r.URL.RawQuery = r.URL.Query().Encode()
			requestPath = requestPath[:len(requestPath)-len(lastsub[subindex:])]
		}
		for cName, methodmap := range p.autoRouter {
			// if prev already find the router break
			if findrouter {
				break
			}
			if strings.ToLower(requestPath) == "/"+cName {
				http.Redirect(w, r, requestPath+"/", 301)
				goto Admin
			}
			// if there's no action, set the default action to index
			if strings.ToLower(requestPath) == "/"+cName+"/" {
				requestPath = requestPath + "index"
			}
			// if the request path start with controllerName
			if strings.HasPrefix(strings.ToLower(requestPath), "/"+cName+"/") {
				for mName, controllerType := range methodmap {
					if strings.ToLower(requestPath) == "/"+cName+"/"+strings.ToLower(mName) ||
						(strings.HasPrefix(strings.ToLower(requestPath), "/"+cName+"/"+strings.ToLower(mName)) &&
							requestPath[len("/"+cName+"/"+strings.ToLower(mName)):len("/"+cName+"/"+strings.ToLower(mName))+1] == "/") {
						runrouter = controllerType
						runMethod = mName
						findrouter = true
						//parse params
						otherurl := requestPath[len("/"+cName+"/"+strings.ToLower(mName)):]
						if len(otherurl) > 1 {
							plist := strings.Split(otherurl, "/")
							for k, v := range plist[1:] {
								context.Input.Params[strconv.Itoa(k)] = v
							}
						}
						break
					}
				}
			}
		}
	}

	//if no matches to url, throw a not found exception
	if !findrouter {
		middleware.Exception("404", rw, r, "")
		goto Admin
	}

	if findrouter {
		if r.Method == "POST" {
			r.ParseMultipartForm(MaxMemory)
		}
		//execute middleware filters
		if do_filter(BeforeExec) {
			goto Admin
		}

		//Invoke the request handler
		vc := reflect.New(runrouter)
		execController, ok := vc.Interface().(ControllerInterface)
		if !ok {
			panic("controller is not ControllerInterface")
		}

		//call the controller init function
		execController.Init(context, runrouter.Name(), runMethod, vc.Interface())

		//if XSRF is Enable then check cookie where there has any cookie in the  request's cookie _csrf
		if EnableXSRF {
			execController.XsrfToken()
			if r.Method == "POST" || r.Method == "DELETE" || r.Method == "PUT" ||
				(r.Method == "POST" && (r.Form.Get("_method") == "delete" || r.Form.Get("_method") == "put")) {
				execController.CheckXsrfCookie()
			}
		}

		//call prepare function
		execController.Prepare()

		if !w.started {
			//exec main logic
			switch runMethod {
			case "Get":
				execController.Get()
			case "Post":
				execController.Post()
			case "Delete":
				execController.Delete()
			case "Put":
				execController.Put()
			case "Head":
				execController.Head()
			case "Patch":
				execController.Patch()
			case "Options":
				execController.Options()
			default:
				in := make([]reflect.Value, 0)
				method := vc.MethodByName(runMethod)
				method.Call(in)
			}

			//render template
			if !w.started && !context.Input.IsWebsocket() {
				if AutoRender {
					if err := execController.Render(); err != nil {
						panic(err)
					}

				}
			}
		}

		// finish all runrouter. release resource
		execController.Finish()

		//execute middleware filters
		if do_filter(AfterExec) {
			goto Admin
		}
	}

Admin:
	do_filter(FinishRouter)

	//admin module record QPS
	if EnableAdmin {
		timeend := time.Since(starttime)
		if FilterMonitorFunc(r.Method, requestPath, timeend) {
			if runrouter != nil {
				go toolbox.StatisticsMap.AddStatistics(r.Method, requestPath, runrouter.Name(), timeend)
			} else {
				go toolbox.StatisticsMap.AddStatistics(r.Method, requestPath, "", timeend)
			}
		}
	}
}