This, intended for tests, feature allows testing time related event without
need for real time waits.
Signed-off-by: Paweł Dziepak <pdziepak@cloudius-systems.com>
Origin does that, so should we. Both ttl and expiry time are stored in
sstables. The value of ttl seems to be used to calculate the read
digest (expiry is not used for that).
The API for creating atomic_cells changed a bit.
To create a non-expiring cell:
atomic_cell::make_live(timestamp, value);
To create an expiring cell:
atomic_cell::make_live(timestamp, value, expiry, ttl);
or:
// Expiry is calculated based on current clock reading
atomic_cell::make_live(timestamp, value, ttl_optional);
The clock used to expire tombstones and cells with time-to-live.
Origin uses 32-bit precision for this clock counting seconds since the
epoch. This means the clock will overflow not that far in the future,
but if we want to maintain compatibility on sstable level we need to
follow that.
