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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def logline_timestamp_comparator(t1, t2):
 """Comparator for timestamps in logline format. Args: t1: Timestamp in logline format. t2: Timestamp in logline format. Returns: -1 if t1 < t2; 1 if t1 > t2; 0 if t1 == t2. """

    dt1 = _parse_logline_timestamp(t1)
    dt2 = _parse_logline_timestamp(t2)
    for u1, u2 in zip(dt1, dt2):
        if u1 < u2:
            return -1
        elif u1 > u2:
            return 1
    return 0