109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
package web
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
|
|
"github.com/gorilla/mux"
|
|
)
|
|
|
|
// RoutedService defines the interface that is needed for any service to
|
|
// register themself in the web server to provide new endpoints. (see
|
|
// AddRoutes).
|
|
type RoutedService interface {
|
|
RegisterRoutes(*mux.Router)
|
|
}
|
|
|
|
// Server is the structure responsible for managing our http web server.
|
|
type Server struct {
|
|
http.Server
|
|
|
|
rootPath string
|
|
port int
|
|
ssl bool
|
|
localOnly bool
|
|
}
|
|
|
|
// NewServer creates a new instance of the webserver.
|
|
func NewServer(rootPath string, port int, ssl, localOnly bool) *Server {
|
|
r := mux.NewRouter()
|
|
|
|
var addr string
|
|
if localOnly {
|
|
addr = fmt.Sprintf(`localhost:%d`, port)
|
|
} else {
|
|
addr = fmt.Sprintf(`:%d`, port)
|
|
}
|
|
|
|
ws := &Server{
|
|
Server: http.Server{
|
|
Addr: addr,
|
|
Handler: r,
|
|
},
|
|
rootPath: rootPath,
|
|
port: port,
|
|
ssl: ssl,
|
|
}
|
|
|
|
return ws
|
|
}
|
|
|
|
func (ws *Server) Router() *mux.Router {
|
|
return ws.Server.Handler.(*mux.Router)
|
|
}
|
|
|
|
// AddRoutes allows services to register themself in the webserver router and provide new endpoints.
|
|
func (ws *Server) AddRoutes(rs RoutedService) {
|
|
rs.RegisterRoutes(ws.Router())
|
|
}
|
|
|
|
func (ws *Server) registerRoutes() {
|
|
ws.Router().PathPrefix("/static").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir(filepath.Join(ws.rootPath, "static")))))
|
|
ws.Router().PathPrefix("/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
|
http.ServeFile(w, r, path.Join(ws.rootPath, "index.html"))
|
|
})
|
|
}
|
|
|
|
// Start runs the web server and start listening for charsetnnections.
|
|
func (ws *Server) Start() {
|
|
ws.registerRoutes()
|
|
|
|
isSSL := ws.ssl && fileExists("./cert/cert.pem") && fileExists("./cert/key.pem")
|
|
if isSSL {
|
|
log.Printf("https server started on :%d\n", ws.port)
|
|
go func() {
|
|
if err := ws.ListenAndServeTLS("./cert/cert.pem", "./cert/key.pem"); err != nil {
|
|
log.Fatalf("ListenAndServeTLS: %v", err)
|
|
}
|
|
}()
|
|
|
|
return
|
|
}
|
|
|
|
log.Printf("http server started on :%d\n", ws.port)
|
|
go func() {
|
|
if err := ws.ListenAndServe(); err != http.ErrServerClosed {
|
|
log.Fatalf("ListenAndServe: %v", err)
|
|
}
|
|
log.Println("http server stopped")
|
|
}()
|
|
}
|
|
|
|
func (ws *Server) Shutdown() error {
|
|
return ws.Close()
|
|
}
|
|
|
|
// fileExists returns true if a file exists at the path.
|
|
func fileExists(path string) bool {
|
|
_, err := os.Stat(path)
|
|
if os.IsNotExist(err) {
|
|
return false
|
|
}
|
|
|
|
return err == nil
|
|
}
|