BloombergLP::ball::FileObserver::rotateOnTimeInterval

Set this file observer to perform a periodic log file rotation at multiples of the specified interval. Optionally specify a startTime indicating the datetime to use as the starting point for computing the periodic rotation schedule. If isPublishInLocalTimeEnabled is true, the startTime is interpreted as local time, and as a UTC time otherwise. If startTime is not specified, the current time is used. This rule replaces any rotation‐on‐time‐interval rule currently in effect. The behavior is undefined unless 0 < interval.totalMilliseconds(). Note that startTime may be a fixed time in the past; e.g., a reference time of bdlt::Datetime(1, 1, 1) and an interval of 24 hours would configure a periodic rotation at midnight each day.