Major refactoring

executor/executor.go

@@ -0,0 +1,43 @@
+package executor
+
+import (
+	"fmt"
+	"net"
+	"sync"
+
+	pb "git.nevets.tech/Keys/CertManager/proto/v1"
+	"github.com/coreos/go-systemd/v22/activation"
+	"google.golang.org/grpc"
+)
+
+type Server struct {
+	listener net.Listener
+	wg       sync.WaitGroup
+}
+
+func (s *Server) Start() error {
+	listeners, err := activation.Listeners()
+	if err != nil {
+		return fmt.Errorf("systemd activation listeners: %v", err)
+	}
+	if len(listeners) != 1 {
+		return fmt.Errorf("systemd activation listeners: expected 1, got %d", len(listeners))
+	}
+
+	s.listener = listeners[0]
+	srv := grpc.NewServer()
+	pb.RegisterHookServiceServer(srv, &hookServer{})
+
+	err = srv.Serve(s.listener)
+	if err != nil {
+		return fmt.Errorf("error creating grpc listener: %v", err)
+	}
+	fmt.Printf("Started gRPC server on %s\n", s.listener.Addr())
+	return nil
+}
+
+func (s *Server) Stop() {
+	if s.listener != nil {
+		_ = s.listener.Close()
+	}
+}