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server.go
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server.go
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package listener
import (
"crypto/tls"
"fmt"
"net"
"github.com/plgd-dev/hub/v2/pkg/fsnotify"
"github.com/plgd-dev/hub/v2/pkg/log"
"github.com/plgd-dev/hub/v2/pkg/security/certManager/server"
)
// Server handles gRPC requests to the service.
type Server struct {
listener net.Listener
closeFunc []func()
}
// NewServer instantiates a listen server.
// When passing addr with an unspecified port or ":", use Addr().
func New(config Config, fileWatcher *fsnotify.Watcher, logger log.Logger) (*Server, error) {
certManager, err := server.New(config.TLS, fileWatcher, logger)
if err != nil {
return nil, fmt.Errorf("cannot create cert manager %w", err)
}
lis, err := tls.Listen("tcp", config.Addr, certManager.GetTLSConfig())
if err != nil {
certManager.Close()
return nil, fmt.Errorf("listening failed: %w", err)
}
return &Server{listener: lis, closeFunc: []func(){certManager.Close}}, nil
}
// AddCloseFunc adds a function to be called by the Close method.
// This eliminates the need for wrapping the Server.
func (s *Server) AddCloseFunc(f func()) {
s.closeFunc = append(s.closeFunc, f)
}
func (s *Server) Close() error {
err := s.listener.Close()
for _, f := range s.closeFunc {
f()
}
return err
}
func (s *Server) Accept() (net.Conn, error) {
return s.listener.Accept()
}
func (s *Server) Addr() net.Addr {
return s.listener.Addr()
}