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Batch up replication requests to request the resyncing of remote users's devices. (#14716)
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changelog.d/14716.misc
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1
changelog.d/14716.misc
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@ -0,0 +1 @@
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Batch up replication requests to request the resyncing of remote users's devices.
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@ -14,6 +14,7 @@
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from http import HTTPStatus
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from typing import (
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TYPE_CHECKING,
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Any,
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@ -33,6 +34,7 @@ from synapse.api.errors import (
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Codes,
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FederationDeniedError,
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HttpResponseException,
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InvalidAPICallError,
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RequestSendFailed,
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SynapseError,
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)
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@ -45,6 +47,7 @@ from synapse.types import (
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JsonDict,
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StreamKeyType,
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StreamToken,
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UserID,
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get_domain_from_id,
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get_verify_key_from_cross_signing_key,
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)
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@ -893,12 +896,47 @@ class DeviceListWorkerUpdater:
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def __init__(self, hs: "HomeServer"):
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from synapse.replication.http.devices import (
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ReplicationMultiUserDevicesResyncRestServlet,
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ReplicationUserDevicesResyncRestServlet,
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)
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self._user_device_resync_client = (
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ReplicationUserDevicesResyncRestServlet.make_client(hs)
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)
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self._multi_user_device_resync_client = (
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ReplicationMultiUserDevicesResyncRestServlet.make_client(hs)
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)
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async def multi_user_device_resync(
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self, user_ids: List[str], mark_failed_as_stale: bool = True
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) -> Dict[str, Optional[JsonDict]]:
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"""
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Like `user_device_resync` but operates on multiple users **from the same origin**
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at once.
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Returns:
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Dict from User ID to the same Dict as `user_device_resync`.
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"""
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# mark_failed_as_stale is not sent. Ensure this doesn't break expectations.
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assert mark_failed_as_stale
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if not user_ids:
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# Shortcut empty requests
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return {}
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try:
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return await self._multi_user_device_resync_client(user_ids=user_ids)
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except SynapseError as err:
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if not (
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err.code == HTTPStatus.NOT_FOUND and err.errcode == Codes.UNRECOGNIZED
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):
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raise
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# Fall back to single requests
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result: Dict[str, Optional[JsonDict]] = {}
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for user_id in user_ids:
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result[user_id] = await self._user_device_resync_client(user_id=user_id)
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return result
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async def user_device_resync(
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self, user_id: str, mark_failed_as_stale: bool = True
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@ -913,8 +951,10 @@ class DeviceListWorkerUpdater:
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A dict with device info as under the "devices" in the result of this
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request:
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https://matrix.org/docs/spec/server_server/r0.1.2#get-matrix-federation-v1-user-devices-userid
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None when we weren't able to fetch the device info for some reason,
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e.g. due to a connection problem.
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"""
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return await self._user_device_resync_client(user_id=user_id)
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return (await self.multi_user_device_resync([user_id]))[user_id]
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class DeviceListUpdater(DeviceListWorkerUpdater):
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@ -1160,19 +1200,66 @@ class DeviceListUpdater(DeviceListWorkerUpdater):
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# Allow future calls to retry resyncinc out of sync device lists.
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self._resync_retry_in_progress = False
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async def multi_user_device_resync(
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self, user_ids: List[str], mark_failed_as_stale: bool = True
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) -> Dict[str, Optional[JsonDict]]:
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"""
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Like `user_device_resync` but operates on multiple users **from the same origin**
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at once.
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Returns:
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Dict from User ID to the same Dict as `user_device_resync`.
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"""
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if not user_ids:
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return {}
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origins = {UserID.from_string(user_id).domain for user_id in user_ids}
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if len(origins) != 1:
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raise InvalidAPICallError(f"Only one origin permitted, got {origins!r}")
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result = {}
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failed = set()
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# TODO(Perf): Actually batch these up
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for user_id in user_ids:
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user_result, user_failed = await self._user_device_resync_returning_failed(
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user_id
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)
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result[user_id] = user_result
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if user_failed:
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failed.add(user_id)
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if mark_failed_as_stale:
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await self.store.mark_remote_users_device_caches_as_stale(failed)
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return result
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async def user_device_resync(
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self, user_id: str, mark_failed_as_stale: bool = True
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) -> Optional[JsonDict]:
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result, failed = await self._user_device_resync_returning_failed(user_id)
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if failed and mark_failed_as_stale:
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# Mark the remote user's device list as stale so we know we need to retry
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# it later.
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await self.store.mark_remote_users_device_caches_as_stale((user_id,))
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return result
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async def _user_device_resync_returning_failed(
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self, user_id: str
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) -> Tuple[Optional[JsonDict], bool]:
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"""Fetches all devices for a user and updates the device cache with them.
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Args:
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user_id: The user's id whose device_list will be updated.
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mark_failed_as_stale: Whether to mark the user's device list as stale
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if the attempt to resync failed.
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Returns:
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A dict with device info as under the "devices" in the result of this
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request:
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https://matrix.org/docs/spec/server_server/r0.1.2#get-matrix-federation-v1-user-devices-userid
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- A dict with device info as under the "devices" in the result of this
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request:
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https://matrix.org/docs/spec/server_server/r0.1.2#get-matrix-federation-v1-user-devices-userid
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None when we weren't able to fetch the device info for some reason,
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e.g. due to a connection problem.
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- True iff the resync failed and the device list should be marked as stale.
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"""
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logger.debug("Attempting to resync the device list for %s", user_id)
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log_kv({"message": "Doing resync to update device list."})
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@ -1181,12 +1268,7 @@ class DeviceListUpdater(DeviceListWorkerUpdater):
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try:
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result = await self.federation.query_user_devices(origin, user_id)
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except NotRetryingDestination:
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if mark_failed_as_stale:
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# Mark the remote user's device list as stale so we know we need to retry
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# it later.
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await self.store.mark_remote_user_device_cache_as_stale(user_id)
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return None
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return None, True
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except (RequestSendFailed, HttpResponseException) as e:
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logger.warning(
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"Failed to handle device list update for %s: %s",
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@ -1194,23 +1276,18 @@ class DeviceListUpdater(DeviceListWorkerUpdater):
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e,
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)
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if mark_failed_as_stale:
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# Mark the remote user's device list as stale so we know we need to retry
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# it later.
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await self.store.mark_remote_user_device_cache_as_stale(user_id)
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# We abort on exceptions rather than accepting the update
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# as otherwise synapse will 'forget' that its device list
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# is out of date. If we bail then we will retry the resync
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# next time we get a device list update for this user_id.
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# This makes it more likely that the device lists will
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# eventually become consistent.
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return None
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return None, True
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except FederationDeniedError as e:
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set_tag("error", True)
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log_kv({"reason": "FederationDeniedError"})
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logger.info(e)
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return None
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return None, False
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except Exception as e:
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set_tag("error", True)
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log_kv(
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@ -1218,12 +1295,7 @@ class DeviceListUpdater(DeviceListWorkerUpdater):
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)
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logger.exception("Failed to handle device list update for %s", user_id)
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if mark_failed_as_stale:
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# Mark the remote user's device list as stale so we know we need to retry
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# it later.
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await self.store.mark_remote_user_device_cache_as_stale(user_id)
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return None
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return None, True
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log_kv({"result": result})
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stream_id = result["stream_id"]
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devices = result["devices"]
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@ -1305,7 +1377,7 @@ class DeviceListUpdater(DeviceListWorkerUpdater):
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# point.
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self._seen_updates[user_id] = {stream_id}
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return result
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return result, False
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async def process_cross_signing_key_update(
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self,
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@ -195,7 +195,7 @@ class DeviceMessageHandler:
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sender_user_id,
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unknown_devices,
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)
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await self.store.mark_remote_user_device_cache_as_stale(sender_user_id)
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await self.store.mark_remote_users_device_caches_as_stale((sender_user_id,))
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# Immediately attempt a resync in the background
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run_in_background(self._user_device_resync, user_id=sender_user_id)
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@ -36,8 +36,8 @@ from synapse.types import (
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get_domain_from_id,
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get_verify_key_from_cross_signing_key,
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)
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from synapse.util import json_decoder, unwrapFirstError
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from synapse.util.async_helpers import Linearizer, delay_cancellation
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from synapse.util import json_decoder
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from synapse.util.async_helpers import Linearizer, concurrently_execute
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from synapse.util.cancellation import cancellable
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from synapse.util.retryutils import NotRetryingDestination
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@ -238,24 +238,28 @@ class E2eKeysHandler:
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# Now fetch any devices that we don't have in our cache
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# TODO It might make sense to propagate cancellations into the
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# deferreds which are querying remote homeservers.
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await make_deferred_yieldable(
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delay_cancellation(
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defer.gatherResults(
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[
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run_in_background(
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self._query_devices_for_destination,
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results,
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cross_signing_keys,
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failures,
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destination,
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queries,
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timeout,
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)
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for destination, queries in remote_queries_not_in_cache.items()
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],
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consumeErrors=True,
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).addErrback(unwrapFirstError)
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logger.debug(
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"%d destinations to query devices for", len(remote_queries_not_in_cache)
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)
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async def _query(
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destination_queries: Tuple[str, Dict[str, Iterable[str]]]
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) -> None:
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destination, queries = destination_queries
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return await self._query_devices_for_destination(
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results,
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cross_signing_keys,
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failures,
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destination,
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queries,
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timeout,
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)
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await concurrently_execute(
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_query,
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remote_queries_not_in_cache.items(),
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10,
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delay_cancellation=True,
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)
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ret = {"device_keys": results, "failures": failures}
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@ -300,28 +304,41 @@ class E2eKeysHandler:
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# queries. We use the more efficient batched query_client_keys for all
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# remaining users
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user_ids_updated = []
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for (user_id, device_list) in destination_query.items():
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if user_id in user_ids_updated:
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continue
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if device_list:
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continue
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# Perform a user device resync for each user only once and only as long as:
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# - they have an empty device_list
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# - they are in some rooms that this server can see
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users_to_resync_devices = {
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user_id
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for (user_id, device_list) in destination_query.items()
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if (not device_list) and (await self.store.get_rooms_for_user(user_id))
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}
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room_ids = await self.store.get_rooms_for_user(user_id)
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if not room_ids:
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continue
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logger.debug(
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"%d users to resync devices for from destination %s",
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len(users_to_resync_devices),
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destination,
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)
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# We've decided we're sharing a room with this user and should
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# probably be tracking their device lists. However, we haven't
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# done an initial sync on the device list so we do it now.
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try:
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resync_results = (
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await self.device_handler.device_list_updater.user_device_resync(
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user_id
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)
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try:
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user_resync_results = (
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await self.device_handler.device_list_updater.multi_user_device_resync(
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list(users_to_resync_devices)
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)
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)
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for user_id in users_to_resync_devices:
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resync_results = user_resync_results[user_id]
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if resync_results is None:
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raise ValueError("Device resync failed")
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# TODO: It's weird that we'll store a failure against a
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# destination, yet continue processing users from that
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# destination.
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# We might want to consider changing this, but for now
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# I'm leaving it as I found it.
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failures[destination] = _exception_to_failure(
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ValueError(f"Device resync failed for {user_id!r}")
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)
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continue
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# Add the device keys to the results.
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user_devices = resync_results["devices"]
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@ -339,8 +356,8 @@ class E2eKeysHandler:
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if self_signing_key:
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cross_signing_keys["self_signing_keys"][user_id] = self_signing_key
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except Exception as e:
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failures[destination] = _exception_to_failure(e)
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except Exception as e:
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failures[destination] = _exception_to_failure(e)
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if len(destination_query) == len(user_ids_updated):
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# We've updated all the users in the query and we do not need to
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|
@ -1423,7 +1423,7 @@ class FederationEventHandler:
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"""
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try:
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await self._store.mark_remote_user_device_cache_as_stale(sender)
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await self._store.mark_remote_users_device_caches_as_stale((sender,))
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# Immediately attempt a resync in the background
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if self._config.worker.worker_app:
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@ -13,12 +13,13 @@
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING, Optional, Tuple
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from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
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from twisted.web.server import Request
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from synapse.http.server import HttpServer
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from synapse.http.servlet import parse_json_object_from_request
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from synapse.logging.opentracing import active_span
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from synapse.replication.http._base import ReplicationEndpoint
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from synapse.types import JsonDict
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@ -84,6 +85,76 @@ class ReplicationUserDevicesResyncRestServlet(ReplicationEndpoint):
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return 200, user_devices
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class ReplicationMultiUserDevicesResyncRestServlet(ReplicationEndpoint):
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"""Ask master to resync the device list for multiple users from the same
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remote server by contacting their server.
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This must happen on master so that the results can be correctly cached in
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the database and streamed to workers.
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Request format:
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POST /_synapse/replication/multi_user_device_resync
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{
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"user_ids": ["@alice:example.org", "@bob:example.org", ...]
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}
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Response is roughly equivalent to ` /_matrix/federation/v1/user/devices/:user_id`
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response, but there is a map from user ID to response, e.g.:
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{
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"@alice:example.org": {
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"devices": [
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{
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"device_id": "JLAFKJWSCS",
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"keys": { ... },
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"device_display_name": "Alice's Mobile Phone"
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}
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]
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},
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...
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}
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"""
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NAME = "multi_user_device_resync"
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PATH_ARGS = ()
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CACHE = False
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def __init__(self, hs: "HomeServer"):
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super().__init__(hs)
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from synapse.handlers.device import DeviceHandler
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handler = hs.get_device_handler()
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assert isinstance(handler, DeviceHandler)
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self.device_list_updater = handler.device_list_updater
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self.store = hs.get_datastores().main
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self.clock = hs.get_clock()
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@staticmethod
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async def _serialize_payload(user_ids: List[str]) -> JsonDict: # type: ignore[override]
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return {"user_ids": user_ids}
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async def _handle_request( # type: ignore[override]
|
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self, request: Request
|
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) -> Tuple[int, Dict[str, Optional[JsonDict]]]:
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content = parse_json_object_from_request(request)
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user_ids: List[str] = content["user_ids"]
|
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|
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logger.info("Resync for %r", user_ids)
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span = active_span()
|
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if span:
|
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span.set_tag("user_ids", f"{user_ids!r}")
|
||||
|
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multi_user_devices = await self.device_list_updater.multi_user_device_resync(
|
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user_ids
|
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)
|
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return 200, multi_user_devices
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|
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class ReplicationUploadKeysForUserRestServlet(ReplicationEndpoint):
|
||||
"""Ask master to upload keys for the user and send them out over federation to
|
||||
update other servers.
|
||||
@ -151,4 +222,5 @@ class ReplicationUploadKeysForUserRestServlet(ReplicationEndpoint):
|
||||
|
||||
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
|
||||
ReplicationUserDevicesResyncRestServlet(hs).register(http_server)
|
||||
ReplicationMultiUserDevicesResyncRestServlet(hs).register(http_server)
|
||||
ReplicationUploadKeysForUserRestServlet(hs).register(http_server)
|
||||
|
@ -54,7 +54,7 @@ from synapse.storage.util.id_generators import (
|
||||
AbstractStreamIdTracker,
|
||||
StreamIdGenerator,
|
||||
)
|
||||
from synapse.types import JsonDict, get_verify_key_from_cross_signing_key
|
||||
from synapse.types import JsonDict, StrCollection, get_verify_key_from_cross_signing_key
|
||||
from synapse.util import json_decoder, json_encoder
|
||||
from synapse.util.caches.descriptors import cached, cachedList
|
||||
from synapse.util.caches.lrucache import LruCache
|
||||
@ -1069,16 +1069,30 @@ class DeviceWorkerStore(RoomMemberWorkerStore, EndToEndKeyWorkerStore):
|
||||
|
||||
return {row["user_id"] for row in rows}
|
||||
|
||||
async def mark_remote_user_device_cache_as_stale(self, user_id: str) -> None:
|
||||
async def mark_remote_users_device_caches_as_stale(
|
||||
self, user_ids: StrCollection
|
||||
) -> None:
|
||||
"""Records that the server has reason to believe the cache of the devices
|
||||
for the remote users is out of date.
|
||||
"""
|
||||
await self.db_pool.simple_upsert(
|
||||
table="device_lists_remote_resync",
|
||||
keyvalues={"user_id": user_id},
|
||||
values={},
|
||||
insertion_values={"added_ts": self._clock.time_msec()},
|
||||
desc="mark_remote_user_device_cache_as_stale",
|
||||
|
||||
def _mark_remote_users_device_caches_as_stale_txn(
|
||||
txn: LoggingTransaction,
|
||||
) -> None:
|
||||
# TODO add insertion_values support to simple_upsert_many and use
|
||||
# that!
|
||||
for user_id in user_ids:
|
||||
self.db_pool.simple_upsert_txn(
|
||||
txn,
|
||||
table="device_lists_remote_resync",
|
||||
keyvalues={"user_id": user_id},
|
||||
values={},
|
||||
insertion_values={"added_ts": self._clock.time_msec()},
|
||||
)
|
||||
|
||||
await self.db_pool.runInteraction(
|
||||
"mark_remote_users_device_caches_as_stale",
|
||||
_mark_remote_users_device_caches_as_stale_txn,
|
||||
)
|
||||
|
||||
async def mark_remote_user_device_cache_as_valid(self, user_id: str) -> None:
|
||||
|
@ -77,6 +77,10 @@ JsonMapping = Mapping[str, Any]
|
||||
# A JSON-serialisable object.
|
||||
JsonSerializable = object
|
||||
|
||||
# Collection[str] that does not include str itself; str being a Sequence[str]
|
||||
# is very misleading and results in bugs.
|
||||
StrCollection = Union[Tuple[str, ...], List[str], Set[str]]
|
||||
|
||||
|
||||
# Note that this seems to require inheriting *directly* from Interface in order
|
||||
# for mypy-zope to realize it is an interface.
|
||||
|
@ -205,7 +205,10 @@ T = TypeVar("T")
|
||||
|
||||
|
||||
async def concurrently_execute(
|
||||
func: Callable[[T], Any], args: Iterable[T], limit: int
|
||||
func: Callable[[T], Any],
|
||||
args: Iterable[T],
|
||||
limit: int,
|
||||
delay_cancellation: bool = False,
|
||||
) -> None:
|
||||
"""Executes the function with each argument concurrently while limiting
|
||||
the number of concurrent executions.
|
||||
@ -215,6 +218,8 @@ async def concurrently_execute(
|
||||
args: List of arguments to pass to func, each invocation of func
|
||||
gets a single argument.
|
||||
limit: Maximum number of conccurent executions.
|
||||
delay_cancellation: Whether to delay cancellation until after the invocations
|
||||
have finished.
|
||||
|
||||
Returns:
|
||||
None, when all function invocations have finished. The return values
|
||||
@ -233,9 +238,16 @@ async def concurrently_execute(
|
||||
# We use `itertools.islice` to handle the case where the number of args is
|
||||
# less than the limit, avoiding needlessly spawning unnecessary background
|
||||
# tasks.
|
||||
await yieldable_gather_results(
|
||||
_concurrently_execute_inner, (value for value in itertools.islice(it, limit))
|
||||
)
|
||||
if delay_cancellation:
|
||||
await yieldable_gather_results_delaying_cancellation(
|
||||
_concurrently_execute_inner,
|
||||
(value for value in itertools.islice(it, limit)),
|
||||
)
|
||||
else:
|
||||
await yieldable_gather_results(
|
||||
_concurrently_execute_inner,
|
||||
(value for value in itertools.islice(it, limit)),
|
||||
)
|
||||
|
||||
|
||||
P = ParamSpec("P")
|
||||
@ -292,6 +304,41 @@ async def yieldable_gather_results(
|
||||
raise dfe.subFailure.value from None
|
||||
|
||||
|
||||
async def yieldable_gather_results_delaying_cancellation(
|
||||
func: Callable[Concatenate[T, P], Awaitable[R]],
|
||||
iter: Iterable[T],
|
||||
*args: P.args,
|
||||
**kwargs: P.kwargs,
|
||||
) -> List[R]:
|
||||
"""Executes the function with each argument concurrently.
|
||||
Cancellation is delayed until after all the results have been gathered.
|
||||
|
||||
See `yieldable_gather_results`.
|
||||
|
||||
Args:
|
||||
func: Function to execute that returns a Deferred
|
||||
iter: An iterable that yields items that get passed as the first
|
||||
argument to the function
|
||||
*args: Arguments to be passed to each call to func
|
||||
**kwargs: Keyword arguments to be passed to each call to func
|
||||
|
||||
Returns
|
||||
A list containing the results of the function
|
||||
"""
|
||||
try:
|
||||
return await make_deferred_yieldable(
|
||||
delay_cancellation(
|
||||
defer.gatherResults(
|
||||
[run_in_background(func, item, *args, **kwargs) for item in iter], # type: ignore[arg-type]
|
||||
consumeErrors=True,
|
||||
)
|
||||
)
|
||||
)
|
||||
except defer.FirstError as dfe:
|
||||
assert isinstance(dfe.subFailure.value, BaseException)
|
||||
raise dfe.subFailure.value from None
|
||||
|
||||
|
||||
T1 = TypeVar("T1")
|
||||
T2 = TypeVar("T2")
|
||||
T3 = TypeVar("T3")
|
||||
|
Loading…
Reference in New Issue
Block a user