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Time out busy presence status & test multi-device busy (#16174)
Add a (long) timeout to when a "busy" device is considered not online. This does *not* match MSC3026, but is a reasonable thing for an implementation to do. Expands tests for the (unstable) busy presence with multiple devices.
This commit is contained in:
Patrick Cloke
GitHub
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ea75346f6a
commit
8b5013dcbc
1
changelog.d/16174.bugfix
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1
changelog.d/16174.bugfix
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@ -0,0 +1 @@
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Fix a long-standing bug where multi-device accounts could cause high load due to presence.
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@ -155,6 +155,8 @@ LAST_ACTIVE_GRANULARITY = 60 * 1000
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# How long to wait until a new /events or /sync request before assuming
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# the client has gone.
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SYNC_ONLINE_TIMEOUT = 30 * 1000
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# Busy status waits longer, but does eventually go offline.
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BUSY_ONLINE_TIMEOUT = 60 * 60 * 1000
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# How long to wait before marking the user as idle. Compared against last active
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IDLE_TIMER = 5 * 60 * 1000
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@ -2066,7 +2068,15 @@ def handle_timeout(
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device_state.last_sync_ts, device_state.last_active_ts
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)
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if now - sync_or_active > SYNC_ONLINE_TIMEOUT:
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# Implementations aren't meant to timeout a device with a busy
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# state, but it needs to timeout *eventually* or else the user
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# will be stuck in that state.
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online_timeout = (
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BUSY_ONLINE_TIMEOUT
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if device_state.state == PresenceState.BUSY
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else SYNC_ONLINE_TIMEOUT
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)
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if now - sync_or_active > online_timeout:
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# Mark the device as going offline.
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offline_devices.append(device_id)
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device_changed = True
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@ -2166,6 +2176,13 @@ def handle_update(
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new_state = new_state.copy_and_replace(last_federation_update_ts=now)
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federation_ping = True
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if new_state.state == PresenceState.BUSY:
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wheel_timer.insert(
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now=now,
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obj=user_id,
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then=new_state.last_user_sync_ts + BUSY_ONLINE_TIMEOUT,
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)
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else:
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wheel_timer.insert(
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now=now,
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@ -26,6 +26,7 @@ from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
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from synapse.events.builder import EventBuilder
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from synapse.federation.sender import FederationSender
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from synapse.handlers.presence import (
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BUSY_ONLINE_TIMEOUT,
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EXTERNAL_PROCESS_EXPIRY,
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FEDERATION_PING_INTERVAL,
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FEDERATION_TIMEOUT,
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@ -912,6 +913,13 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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for cases in [
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# If both devices have the same state, online should eventually idle.
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# Otherwise, the state doesn't change.
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(
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.ONLINE,
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PresenceState.ONLINE,
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@ -933,7 +941,29 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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PresenceState.OFFLINE,
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PresenceState.OFFLINE,
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),
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# If the second device has a "lower" state it should fallback to it.
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# If the second device has a "lower" state it should fallback to it,
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# except for "busy" which overrides.
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(
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PresenceState.BUSY,
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PresenceState.ONLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.BUSY,
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PresenceState.UNAVAILABLE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.BUSY,
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PresenceState.OFFLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.ONLINE,
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PresenceState.UNAVAILABLE,
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@ -956,6 +986,27 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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PresenceState.UNAVAILABLE,
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),
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# If the second device has a "higher" state it should override.
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(
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PresenceState.ONLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.UNAVAILABLE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.OFFLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.UNAVAILABLE,
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PresenceState.ONLINE,
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@ -1114,6 +1165,12 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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for workers in (False, True)
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for cases in [
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# If both devices have the same state, nothing exciting should happen.
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(
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.ONLINE,
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PresenceState.ONLINE,
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@ -1132,7 +1189,26 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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PresenceState.OFFLINE,
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PresenceState.OFFLINE,
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),
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# If the second device has a "lower" state it should fallback to it.
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# If the second device has a "lower" state it should fallback to it,
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# except for "busy" which overrides.
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(
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PresenceState.BUSY,
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PresenceState.ONLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.BUSY,
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PresenceState.UNAVAILABLE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.BUSY,
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PresenceState.OFFLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.ONLINE,
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PresenceState.UNAVAILABLE,
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@ -1152,6 +1228,24 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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PresenceState.OFFLINE,
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),
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# If the second device has a "higher" state it should override.
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(
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PresenceState.ONLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.UNAVAILABLE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.OFFLINE,
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PresenceState.BUSY,
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PresenceState.BUSY,
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PresenceState.BUSY,
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),
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(
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PresenceState.UNAVAILABLE,
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PresenceState.ONLINE,
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@ -1266,7 +1360,11 @@ class PresenceHandlerTestCase(BaseMultiWorkerStreamTestCase):
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# 8. Advance such that the second device should be discarded (the sync timeout),
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# then pump so _handle_timeouts function to called.
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self.reactor.advance(SYNC_ONLINE_TIMEOUT / 1000)
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if dev_1_state == PresenceState.BUSY or dev_2_state == PresenceState.BUSY:
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timeout = BUSY_ONLINE_TIMEOUT
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else:
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timeout = SYNC_ONLINE_TIMEOUT
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self.reactor.advance(timeout / 1000)
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self.reactor.pump([5])
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# 9. There are no more devices, should be offline.
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