102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
package server
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import (
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"context"
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"fmt"
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"net"
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"net/http"
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"sync"
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"time"
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"github.com/qdm12/gluetun/internal/dns"
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"github.com/qdm12/gluetun/internal/openvpn"
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"github.com/qdm12/gluetun/internal/updater"
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"github.com/qdm12/golibs/logging"
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)
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type Server interface {
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Run(ctx context.Context, wg *sync.WaitGroup)
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}
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type server struct {
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address string
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logging bool
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logger logging.Logger
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openvpnLooper openvpn.Looper
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unboundLooper dns.Looper
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updaterLooper updater.Looper
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lookupIP func(host string) ([]net.IP, error)
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}
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func New(address string, logging bool, logger logging.Logger, openvpnLooper openvpn.Looper, unboundLooper dns.Looper, updaterLooper updater.Looper) Server {
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return &server{
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address: address,
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logging: logging,
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logger: logger.WithPrefix("http server: "),
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openvpnLooper: openvpnLooper,
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unboundLooper: unboundLooper,
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updaterLooper: updaterLooper,
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lookupIP: net.LookupIP,
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}
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}
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func (s *server) Run(ctx context.Context, wg *sync.WaitGroup) {
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server := http.Server{Addr: s.address, Handler: s.makeHandler()}
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go func() {
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defer wg.Done()
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<-ctx.Done()
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s.logger.Warn("context canceled: exiting loop")
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defer s.logger.Warn("loop exited")
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
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defer cancel()
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if err := server.Shutdown(shutdownCtx); err != nil {
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s.logger.Error("failed shutting down: %s", err)
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}
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}()
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s.logger.Info("listening on %s", s.address)
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err := server.ListenAndServe()
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if err != nil && ctx.Err() != context.Canceled {
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s.logger.Error(err)
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}
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}
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func (s *server) makeHandler() http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if s.logging && (r.Method != http.MethodGet || r.RequestURI != "/health") {
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s.logger.Info("HTTP %s %s", r.Method, r.RequestURI)
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}
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switch r.Method {
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case http.MethodGet:
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switch r.RequestURI {
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case "/openvpn/actions/restart":
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s.openvpnLooper.Restart()
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w.WriteHeader(http.StatusOK)
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case "/unbound/actions/restart":
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s.unboundLooper.Restart()
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w.WriteHeader(http.StatusOK)
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case "/openvpn/portforwarded":
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s.handleGetPortForwarded(w)
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case "/openvpn/settings":
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s.handleGetOpenvpnSettings(w)
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case "/health":
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s.handleHealth(w)
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case "/updater/restart":
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s.updaterLooper.Restart()
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w.WriteHeader(http.StatusOK)
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default:
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routeDoesNotExist(s.logger, w, r)
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}
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default:
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routeDoesNotExist(s.logger, w, r)
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}
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}
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}
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func routeDoesNotExist(logger logging.Logger, w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusBadRequest)
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_, err := w.Write([]byte(fmt.Sprintf("Nothing here for %s %s", r.Method, r.RequestURI)))
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if err != nil {
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logger.Error(err)
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}
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}
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