async def test_max_sync_interval_next_sync_attempt(coord: Coordinator, model, source: HelperTestSource, dest: HelperTestSource, backup, time: FakeTime, simple_config: Config):
"""
Next backup is after max sync interval is reached
"""
simple_config.override(Setting.DAYS_BETWEEN_BACKUPS, 1)
simple_config.override(Setting.MAX_SYNC_INTERVAL_SECONDS, 60 * 60)
time.setTimeZone("Europe/Stockholm")
simple_config.override(Setting.BACKUP_TIME_OF_DAY, "03:23")
simple_config.override(Setting.DAYS_BETWEEN_BACKUPS, 1)
source.setMax(10)
source.insert("Fri", time.toUtc(time.local(2020, 3, 16, 3, 33)))
time.setNow(time.local(2020, 3, 17, 1, 29))
model.reinitialize()
coord.reset()
await coord.sync()
assert coord.nextSyncAttempt() == time.local(2020, 3, 17, 2, 29)
assert coord.nextBackupTime() > coord.nextSyncAttempt()
async def test_schedule_snapshot_next_sync_attempt(coord: Coordinator, model, source: HelperTestSource, dest: HelperTestSource, snapshot, time: FakeTime, simple_config: Config):
"""
Next snapshot is before max sync interval is reached
"""
simple_config.override(Setting.DAYS_BETWEEN_SNAPSHOTS, 1)
simple_config.override(Setting.MAX_SYNC_INTERVAL_SECONDS, 60 * 60)
time.setTimeZone("Europe/Stockholm")
simple_config.override(Setting.SNAPSHOT_TIME_OF_DAY, "03:23")
simple_config.override(Setting.DAYS_BETWEEN_SNAPSHOTS, 1)
source.setMax(10)
source.insert("Fri", time.toUtc(time.local(2020, 3, 16, 3, 33)))
time.setNow(time.local(2020, 3, 17, 2, 29))
model.reinitialize()
coord.reset()
await coord.sync()
assert coord.nextSnapshotTime() == time.local(2020, 3, 17, 3, 23)
assert coord.nextSnapshotTime() == coord.nextSyncAttempt()
async def test_backoff(coord: Coordinator, model, source: HelperTestSource,
dest: HelperTestSource, snapshot, time: FakeTime,
simple_config: Config):
assert coord.check()
simple_config.override(Setting.DAYS_BETWEEN_SNAPSHOTS, 1)
simple_config.override(Setting.MAX_SYNC_INTERVAL_SECONDS, 60 * 60 * 6)
assert coord.nextSyncAttempt() == time.now() + timedelta(hours=6)
assert not coord.check()
error = Exception("BOOM")
old_sync = model.sync
model.sync = lambda s: doRaise(error)
await coord.sync()
# first backoff should be 0 seconds
assert coord.nextSyncAttempt() == time.now()
assert coord.check()
# backoff maxes out at 1 hr = 3600 seconds
for seconds in [
10, 20, 40, 80, 160, 320, 640, 1280, 2560, 3600, 3600, 3600
]:
await coord.sync()
assert coord.nextSyncAttempt() == time.now() + timedelta(
seconds=seconds)
assert not coord.check()
assert not coord.check()
assert not coord.check()
# a good sync resets it back to 6 hours from now
model.sync = old_sync
await coord.sync()
assert coord.nextSyncAttempt() == time.now() + timedelta(hours=6)
assert not coord.check()
# if the next snapshot is less that 6 hours from the last one, that that shoudl be when we sync
simple_config.override(Setting.DAYS_BETWEEN_SNAPSHOTS, 1.0 / 24.0)
assert coord.nextSyncAttempt() == time.now() + timedelta(hours=1)
assert not coord.check()
time.advance(hours=2)
assert coord.nextSyncAttempt() == time.now() - timedelta(hours=1)
assert coord.check()
