Example #1
0
func getSerialisedInstance(
	app, proc string,
	id int64,
	status InsStatus,
	sp cp.Snapshot,
) (*Instance, error) {
	var (
		i = &Instance{
			ID:          id,
			AppName:     app,
			ProcessName: proc,
			dir:         cp.NewDir(instancePath(id), sp),
		}
		c = &cp.JsonCodec{
			DecodedVal: i,
		}
	)

	_, err := sp.GetFile(i.procStatusPath(status), c)
	if err != nil {
		return nil, errorf(err, "fetching instance %d: %s", id, err)
	}

	return i, nil
}
Example #2
0
func claimNextPort(s cp.Snapshot) (int, error) {
	for {
		var err error
		s, err = s.FastForward()
		if err != nil {
			return -1, err
		}

		f, err := s.GetFile(nextPortPath, new(cp.IntCodec))
		if err == nil {
			port := f.Value.(int)

			f, err = f.Set(port + 1)
			if err == nil {
				return port, nil
			}
			time.Sleep(time.Second / 10)
		} else {
			return -1, err
		}
	}
}