Method Set

pkg/tools/lifecycle/state.go:95–104

Set transitions to s, recording the transition time and clearing the last error. Same-state Set is a no-op (preserves Since/LastError).

(s State)

// Set transitions to s, recording the transition time and clearing the
// last error. Same-state Set is a no-op (preserves Since/LastError).
func (t *Tracker) Set(s State) {
	t.mu.Lock()
	defer t.mu.Unlock()
	if t.state == s {
		return
	}
	t.state = s
	t.since = time.Now()
	t.lastErr = nil
}

// Fail transitions to s and records err as the last error. Use this when
// entering Failed/Restarting after a failure so the supervisor's snapshot