package admin import ( "context" "fmt" "log" "net" "net/http" "forge.cadoles.com/cadoles/bouncer/internal/auth" "forge.cadoles.com/cadoles/bouncer/internal/auth/jwt" "forge.cadoles.com/cadoles/bouncer/internal/config" "forge.cadoles.com/cadoles/bouncer/internal/jwk" "forge.cadoles.com/cadoles/bouncer/internal/store" "github.com/go-chi/chi/v5" "github.com/go-chi/chi/v5/middleware" "github.com/go-chi/cors" "github.com/pkg/errors" "github.com/prometheus/client_golang/prometheus/promhttp" "gitlab.com/wpetit/goweb/logger" ) type Server struct { serverConfig config.AdminServerConfig redisConfig config.RedisConfig proxyRepository store.ProxyRepository layerRepository store.LayerRepository } func (s *Server) Start(ctx context.Context) (<-chan net.Addr, <-chan error) { errs := make(chan error) addrs := make(chan net.Addr) go s.run(ctx, addrs, errs) return addrs, errs } func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan error) { defer func() { close(errs) close(addrs) }() ctx, cancel := context.WithCancel(parentCtx) defer cancel() if err := s.initRepositories(ctx); err != nil { errs <- errors.WithStack(err) return } listener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", s.serverConfig.HTTP.Host, s.serverConfig.HTTP.Port)) if err != nil { errs <- errors.WithStack(err) return } addrs <- listener.Addr() defer func() { if err := listener.Close(); err != nil && !errors.Is(err, net.ErrClosed) { errs <- errors.WithStack(err) } }() go func() { <-ctx.Done() if err := listener.Close(); err != nil && !errors.Is(err, net.ErrClosed) { log.Printf("%+v", errors.WithStack(err)) } }() key, err := jwk.LoadOrGenerate(string(s.serverConfig.Auth.PrivateKey), jwk.DefaultKeySize) if err != nil { errs <- errors.WithStack(err) return } keys, err := jwk.PublicKeySet(key) if err != nil { errs <- errors.WithStack(err) return } router := chi.NewRouter() router.Use(middleware.Logger) corsMiddleware := cors.New(cors.Options{ AllowedOrigins: s.serverConfig.CORS.AllowedOrigins, AllowedMethods: s.serverConfig.CORS.AllowedMethods, AllowCredentials: bool(s.serverConfig.CORS.AllowCredentials), AllowedHeaders: s.serverConfig.CORS.AllowedHeaders, Debug: bool(s.serverConfig.CORS.Debug), }) router.Use(corsMiddleware.Handler) if s.serverConfig.Metrics.Enabled { metrics := s.serverConfig.Metrics logger.Info(ctx, "enabling metrics", logger.F("endpoint", metrics.Endpoint)) router.Group(func(r chi.Router) { if metrics.BasicAuth != nil { logger.Info(ctx, "enabling authentication on metrics endpoint") r.Use(middleware.BasicAuth( "metrics", metrics.BasicAuth.CredentialsMap(), )) } r.Handle(string(metrics.Endpoint), promhttp.Handler()) }) } router.Route("/api/v1", func(r chi.Router) { r.Group(func(r chi.Router) { r.Use(auth.Middleware( jwt.NewAuthenticator(keys, string(s.serverConfig.Auth.Issuer), jwt.DefaultAcceptableSkew), )) r.Route("/proxies", func(r chi.Router) { r.With(assertReadAccess).Get("/", s.queryProxy) r.With(assertWriteAccess).Post("/", s.createProxy) r.With(assertReadAccess).Get("/{proxyName}", s.getProxy) r.With(assertWriteAccess).Put("/{proxyName}", s.updateProxy) r.With(assertWriteAccess).Delete("/{proxyName}", s.deleteProxy) r.With(assertReadAccess).Get("/{proxyName}/layers", s.queryLayer) r.With(assertWriteAccess).Post("/{proxyName}/layers", s.createLayer) r.With(assertReadAccess).Get("/{proxyName}/layers/{layerName}", s.getLayer) r.With(assertWriteAccess).Put("/{proxyName}/layers/{layerName}", s.updateLayer) r.With(assertWriteAccess).Delete("/{proxyName}/layers/{layerName}", s.deleteLayer) }) }) }) logger.Info(ctx, "http server listening") if err := http.Serve(listener, router); err != nil && !errors.Is(err, net.ErrClosed) { errs <- errors.WithStack(err) } logger.Info(ctx, "http server exiting") } func NewServer(funcs ...OptionFunc) *Server { opt := defaultOption() for _, fn := range funcs { fn(opt) } return &Server{ serverConfig: opt.ServerConfig, redisConfig: opt.RedisConfig, } }