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server.go
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server.go
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package server
import (
"fmt"
"net/http"
"net/url"
"alox.sh"
"alox.sh/webpage"
"golang.org/x/net/html"
)
type Server struct {
handler alox.Handler
errorHandler alox.ErrorHandler
filters []alox.Filter
middlewares []alox.Middleware
subServers []alox.Server
}
func NewServer() *Server {
return &Server{}
}
func (server *Server) setHandler(handler alox.Handler) *Server {
server.handler = handler
return server
}
func (server *Server) SetHandler(handler alox.Handler) alox.Server {
return server.setHandler(handler)
}
func (server *Server) SetErrorHandler(errorHandler alox.ErrorHandler) alox.Server {
if errorHandler != nil {
server.errorHandler = errorHandler
}
return server
}
func (server *Server) AddFilters(filter ...alox.Filter) alox.Server {
server.filters = append(server.filters, filter...)
return server
}
func (server *Server) AddMiddlewares(middlewares ...alox.Middleware) alox.Server {
server.middlewares = append(server.middlewares, middlewares...)
return server
}
func (server *Server) Match(request *http.Request) bool {
for _, filter := range server.filters {
if !filter(request) {
return false
}
}
return true
}
func (server *Server) ServeHTTP(responseWriter http.ResponseWriter, request *http.Request) {
var handler alox.Handler = func(_ alox.Server, responseWriter http.ResponseWriter, request *http.Request) {
if server.handler != nil {
server.handler(server, responseWriter, request)
}
for _, subServer := range server.subServers {
if subServer.Match(request) {
go subServer.ServeHTTP(responseWriter, request)
}
}
}
for index := len(server.middlewares) - 1; index >= 0; index -= 1 {
handler = server.middlewares[index](handler)
}
handler(server, responseWriter, request)
}
func (server *Server) NewAPI(handler APIHandler) (api *API) {
api = NewAPI(handler)
api.SetErrorHandler(server.errorHandler)
server.subServers = append(server.subServers, api)
return
}
func (server *Server) NewWeb(handler WebHandler) (web *Web) {
web = NewWeb(handler)
web.SetErrorHandler(server.errorHandler)
server.subServers = append(server.subServers, web)
return
}
func (server *Server) NewSPA(handler SPAHandler, params SPAParams) (spa *SPA, err error) {
if spa, err = NewSPA(handler, params); err != nil {
return
}
spa.SetErrorHandler(server.errorHandler)
server.subServers = append(server.subServers, spa)
return
}
// func (server *Server) NewProxy(handler ProxyHandler) (proxy *Proxy) {
// proxy = NewProxy(handler)
// proxy.SetErrorHandler(server.errorHandler)
// server.subServers = append(server.subServers, proxy)
// return
// }
func (server *Server) NewReverseProxy(originURL *url.URL) (reverseProxy *ReverseProxy, err error) {
if reverseProxy, err = NewReverseProxy(originURL); err != nil {
return
}
reverseProxy.SetErrorHandler(server.errorHandler)
server.subServers = append(server.subServers, reverseProxy)
return
}
func (server *Server) NewFile(handler FileHandler) (file *File) {
file = NewFile(handler)
file.SetErrorHandler(server.errorHandler)
server.subServers = append(server.subServers, file)
return
}
func (server *Server) HandleError(responseWriter http.ResponseWriter, request *http.Request, err interface{}) {
if server.errorHandler != nil {
server.errorHandler(server, responseWriter, request, err)
return
}
responseWriter.WriteHeader(500)
responseWriter.Write([]byte(fmt.Sprintf("Internal server error: %+v", err)))
}
func (server *Server) WriteJSON(responseWriter http.ResponseWriter, json []byte) {
alox.WriteJSON(responseWriter, json)
}
func (server *Server) WriteHTML(responseWriter http.ResponseWriter, html []byte) {
alox.WriteHTML(responseWriter, html)
}
func (server *Server) WriteFile(responseWriter http.ResponseWriter, name string, data []byte) {
alox.WriteFile(responseWriter, name, data)
}
func (api *API) MarshalAndWriteJSON(responseWriter http.ResponseWriter, request *http.Request, value interface{}) {
err := alox.MarshalAndWriteJSON(responseWriter, value)
if err != nil {
api.HandleError(responseWriter, request, err)
}
}
func (api *API) RenderAndWriteHTMLNode(responseWriter http.ResponseWriter, request *http.Request, node *html.Node) {
err := alox.RenderAndWriteHTMLNode(responseWriter, node)
if err != nil {
api.HandleError(responseWriter, request, err)
}
}
func (server *Server) WriteWebpage(responseWriter http.ResponseWriter, request *http.Request, webpage *webpage.Webpage) (err error) {
return webpage.WriteToResponse(responseWriter)
}
func (server *Server) MustWriteWebpage(responseWriter http.ResponseWriter, request *http.Request, webpage *webpage.Webpage) {
err := server.WriteWebpage(responseWriter, request, webpage)
if err != nil {
server.HandleError(responseWriter, request, err)
}
}