func (f *Frontend) registerMethod(method kit.Method) {
f.client.Register(method.GetName(), func(args []interface{}, kwargs map[string]interface{}, details map[string]interface{}) (result *turnpike.CallResult) {
methodName := method.GetName()
fmt.Printf("WAMP method %v |\n data: %v |\n details: %v\n", methodName, kwargs, details)
request := kit.NewRequest()
request.SetFrontend("wamp")
request.SetPath("/method/" + methodName)
request.SetData(kwargs)
var response kit.Response
// Find session.
sessionId := uint(details["session_id"].(turnpike.ID))
session := f.sessions[sessionId]
if session == nil {
s, err := f.registry.UserService().StartSession(nil, "wamp")
if err != nil {
response = kit.NewErrorResponse(err)
} else {
f.sessions[sessionId] = s
session = s
}
}
request.SetSession(session)
if session.GetUser() != nil {
request.SetUser(session.GetUser())
}
// Run before middlewares.
for _, middleware := range f.beforeMiddlewares {
resp, skip := middleware(f.registry, request)
if skip {
panic("WAMP frontend middlewares do not support skipping.")
} else if resp != nil {
response = resp
break
}
}
// Run the method.
if response == nil {
responder := func(r kit.Response) {
response = r
}
finishedChannel, err := f.registry.App().RunMethod(methodName, request, responder, true)
if err != nil {
response = kit.NewErrorResponse(err)
} else {
<-finishedChannel
}
}
// Run after middlewares.
for _, middleware := range f.afterMiddlewares {
resp, skip := middleware(f.registry, request, response)
if skip {
panic("WAMP frontend middlewares do not support skipping.")
}
if resp != nil {
response = resp
}
}
return &turnpike.CallResult{Kwargs: response.GetData().(map[string]interface{})}
}, nil)
}
func HttpHandler(w http.ResponseWriter, r *http.Request, params httprouter.Params, registry kit.Registry, handler kit.RequestHandler) {
config := registry.Config()
header := w.Header()
// Set Access-Control headers.
allowedOrigins := config.UString("accessControl.allowedOrigins", "*")
header.Set("Access-Control-Allow-Origin", allowedOrigins)
methods := config.UString("accessControl.allowedMethods", "GET, POST, PUT, DELETE, OPTIONS, PATCH")
header.Set("Access-Control-Allow-Methods", methods)
allowedHeaders := config.UString("accessControl.allowedHeaders", "Authentication, Content-Type, X-Requested-With, Accept, Accept-Language, Content-Language")
header.Set("Access-Control-Allow-Headers", allowedHeaders)
// If it is an options request, just respond with 200.
if r.Method == "OPTIONS" {
w.WriteHeader(200)
return
}
request := kit.NewRequest()
request.SetFrontend("http")
request.SetPath(r.URL.String())
request.SetHttpMethod(r.Method)
request.SetHttpRequest(r)
request.SetHttpResponseWriter(w)
for _, param := range params {
request.Context.Set(param.Key, param.Value)
}
queryVals := r.URL.Query()
for key := range queryVals {
vals := queryVals[key]
if len(vals) == 1 {
request.Context.Set(key, vals[0])
} else {
request.Context.Set(key, vals)
}
}
response, skip := processRequest(registry, request, handler)
if skip {
return
}
// If a data reader is set, write the data of the reader.
reader := response.GetRawDataReader()
if reader != nil {
w.WriteHeader(response.GetHttpStatus())
io.Copy(w, reader)
reader.Close()
return
}
// If raw data is set, write the raw data.
rawData := response.GetRawData()
if rawData != nil {
w.WriteHeader(response.GetHttpStatus())
w.Write(rawData)
return
}
registry.Logger().Panicf("Invalid response with no raw data: %+v", response)
}