test_transform_service.py 文件源码

def _spawn_transform_service(self):
        """Launch transform service and get pid."""
        status = 0
        pid = os.fork()
        if pid == 0:
            try:
                os.setsid()
                # start transform service
                launcher = oslo_service.service.launch(
                    self.conf,
                    transform_service.Transform(),
                    workers=1)
                status = launcher.wait()
            except SystemExit as exc:
                traceback.print_exc()
                status = exc.code
            except BaseException:
                try:
                    traceback.print_exc()
                except BaseException:
                    print("Could not print traceback")
                status = 2
            os._exit(status or 0)
        return pid