func()

in plugins/inputs/logparser/grok/grok.go [388:441]

• 48 lines of code
• 16 McCabe index (conditional complexity)

func (t *tsModder) tsMod(ts time.Time) time.Time {
	defer func() { t.last = ts }()
	// don't mod the time if we don't need to
	if t.last.IsZero() || ts.IsZero() {
		t.incrn = 0
		t.rollover = 0
		return ts
	}
	if !ts.Equal(t.last) && !ts.Equal(t.dupe) {
		t.incr = 0
		t.incrn = 0
		t.rollover = 0
		return ts
	}

	if ts.Equal(t.last) {
		t.dupe = ts
	}

	if ts.Equal(t.dupe) && t.incr == time.Duration(0) {
		tsNano := ts.UnixNano()

		d := int64(10)
		counter := 1
		for {
			a := tsNano % d
			if a > 0 {
				break
			}
			d = d * 10
			counter++
		}

		switch {
		case counter <= 6:
			t.incr = time.Nanosecond
		case counter <= 9:
			t.incr = time.Microsecond
		case counter > 9:
			t.incr = time.Millisecond
		}
	}

	t.incrn++
	if t.incrn == 999 && t.incr > time.Nanosecond {
		t.rollover = t.incr * t.incrn
		t.incrn = 1
		t.incr = t.incr / 1000
		if t.incr < time.Nanosecond {
			t.incr = time.Nanosecond
		}
	}
	return ts.Add(t.incr*t.incrn + t.rollover)
}