78 lines
1.4 KiB
Go
78 lines
1.4 KiB
Go
package app
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import (
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"context"
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"errors"
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"net"
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"net/http"
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"time"
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)
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type ListenerFactory func(network, address string) (net.Listener, error)
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type Server struct {
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server *http.Server
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listen ListenerFactory
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}
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func NewServer(listenAddr string, listenerFactory ListenerFactory) *Server {
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mux := http.NewServeMux()
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mux.HandleFunc("/healthz", func(w http.ResponseWriter, _ *http.Request) {
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte("ok"))
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})
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server := &Server{
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server: &http.Server{
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Addr: listenAddr,
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Handler: mux,
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},
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listen: net.Listen,
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}
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if listenerFactory != nil {
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server.listen = listenerFactory
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}
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return server
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}
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func (s *Server) Addr() string {
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return s.server.Addr
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}
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func (s *Server) Run(ctx context.Context) error {
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listener, err := s.listen("tcp", s.server.Addr)
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if err != nil {
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return err
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}
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return s.Serve(ctx, listener)
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}
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func (s *Server) Serve(ctx context.Context, listener net.Listener) error {
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errCh := make(chan error, 1)
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go func() {
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err := s.server.Serve(listener)
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if errors.Is(err, http.ErrServerClosed) {
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err = nil
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}
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errCh <- err
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}()
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select {
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case <-ctx.Done():
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := s.server.Shutdown(shutdownCtx); err != nil {
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return err
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}
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return <-errCh
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case err := <-errCh:
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return err
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}
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}
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