prow/tide/history/history.go
func (h *History) Record(poolKey, action, baseSHA, err string, targets []prowapi.Pull) {
	t := now()
	sort.Sort(ByNum(targets))
	h.addRecord(
		poolKey,
		&Record{
			Time:    t,
			Action:  action,
			BaseSHA: baseSHA,
			Target:  targets,
			Err:     err,
		},
	)
}
func (h *History) Record(poolKey, action, baseSHA, err string, targets []prowapi.Pull) {
	t := now()
	sort.Sort(ByNum(targets))
	h.addRecord(
		poolKey,
		&Record{
			Time:    t,
			Action:  action,
			BaseSHA: baseSHA,
			Target:  targets,
			Err:     err,
		},
	)
}
// Record appends an entry to the recordlog specified by the poolKey.