tiny.sql.history.segment.SegmentRange

1pub const SegmentRange = struct {2    pub const Count = u64;3    pub const unit_precision_segments: Count = 1;4    pub const maximum_units_per_second: Count = 1_000_000;5    pub const maximum_seconds_per_year: Count =6        RangeLifetime.maximum_seconds_per_year;7    pub const service_lifetime_years: Count =8        RangeLifetime.service_lifetime_years;9    pub const service_lifetime_seconds: Count =10        RangeLifetime.service_lifetime_seconds;11    pub const maximum_increment_segments: Count = 1;12    pub const budget_segments: Count = total(13        maximum_units_per_second,14        service_lifetime_seconds,15    ).?;1617    pub fn total(units_per_second: Count, lifetime_seconds: Count) ?Count {18        return totalRange(19            unit_precision_segments,20            units_per_second,21            lifetime_seconds,22        );23    }2425    pub fn advance(current: Count) ?Count {26        if (current >= budget_segments) return null;27        return std.math.add(Count, current, maximum_increment_segments) catch null;28    }2930    pub fn containsOrdinal(ordinal: Count) bool {31        return advance(ordinal) != null;32    }3334    pub fn containsCount(count: Count) bool {35        return count > 0 and count <= budget_segments;36    }37};

1pub const SegmentRange = format.SegmentRange;