// 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)
}
}
// 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)
}
}
}
}