// HandleNotFound handles pages not found. In particular, this handler is used
// when we have no matching route for a request. This also means it's not
// useful to inject the livereload paraphernalia here.
func HandleNotFound(templates *template.Template) httpctx.Handler {
return httpctx.HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotFound)
err := templates.Lookup("404.html").Execute(w, nil)
if err != nil {
logger := termlog.FromContext(ctx)
logger.Shout("Could not execute template: %s", err)
}
})
}
// Router constructs the main Devd router that serves all requests
func (dd *Devd) Router(logger termlog.Logger, templates *template.Template) (http.Handler, error) {
mux := http.NewServeMux()
hasGlobal := false
ci := inject.CopyInject{}
if dd.HasLivereload() {
ci = livereload.Injector
}
for match, route := range dd.Routes {
if match == "/" {
hasGlobal = true
}
handler := dd.WrapHandler(
logger,
route.Endpoint.Handler(templates, ci),
)
handler = http.StripPrefix(route.Path, handler)
mux.Handle(match, handler)
}
if dd.HasLivereload() {
lr := livereload.NewServer("livereload", logger)
mux.Handle(livereload.EndpointPath, lr)
mux.Handle(livereload.ScriptPath, http.HandlerFunc(lr.ServeScript))
if dd.LivereloadRoutes {
err := WatchRoutes(dd.Routes, lr, dd.Excludes, logger)
if err != nil {
return nil, fmt.Errorf("Could not watch routes for livereload: %s", err)
}
}
if len(dd.WatchPaths) > 0 {
err := WatchPaths(dd.WatchPaths, dd.Excludes, lr, logger)
if err != nil {
return nil, fmt.Errorf("Could not watch path for livereload: %s", err)
}
}
}
if !hasGlobal {
mux.Handle(
"/",
dd.WrapHandler(logger, httpctx.HandlerFunc(HandleNotFound)),
)
}
var h http.Handler = mux
if dd.Credentials != nil {
h = httpauth.SimpleBasicAuth(
dd.Credentials.username, dd.Credentials.password,
)(h)
}
return hostPortStrip(h), nil
}
