diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py
index 07ec95f1d6..d23d9221bc 100644
--- a/synapse/appservice/__init__.py
+++ b/synapse/appservice/__init__.py
@@ -1,4 +1,5 @@
# Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2022 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -22,7 +23,13 @@ from netaddr import IPSet
from synapse.api.constants import EventTypes
from synapse.events import EventBase
-from synapse.types import GroupID, JsonDict, UserID, get_domain_from_id
+from synapse.types import (
+ DeviceListUpdates,
+ GroupID,
+ JsonDict,
+ UserID,
+ get_domain_from_id,
+)
from synapse.util.caches.descriptors import _CacheContext, cached
if TYPE_CHECKING:
@@ -400,6 +407,7 @@ class AppServiceTransaction:
to_device_messages: List[JsonDict],
one_time_key_counts: TransactionOneTimeKeyCounts,
unused_fallback_keys: TransactionUnusedFallbackKeys,
+ device_list_summary: DeviceListUpdates,
):
self.service = service
self.id = id
@@ -408,6 +416,7 @@ class AppServiceTransaction:
self.to_device_messages = to_device_messages
self.one_time_key_counts = one_time_key_counts
self.unused_fallback_keys = unused_fallback_keys
+ self.device_list_summary = device_list_summary
async def send(self, as_api: "ApplicationServiceApi") -> bool:
"""Sends this transaction using the provided AS API interface.
@@ -424,6 +433,7 @@ class AppServiceTransaction:
to_device_messages=self.to_device_messages,
one_time_key_counts=self.one_time_key_counts,
unused_fallback_keys=self.unused_fallback_keys,
+ device_list_summary=self.device_list_summary,
txn_id=self.id,
)
diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py
index 98fe354014..0cdbb04bfb 100644
--- a/synapse/appservice/api.py
+++ b/synapse/appservice/api.py
@@ -1,4 +1,5 @@
# Copyright 2015, 2016 OpenMarket Ltd
+# Copyright 2022 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -27,7 +28,7 @@ from synapse.appservice import (
from synapse.events import EventBase
from synapse.events.utils import SerializeEventConfig, serialize_event
from synapse.http.client import SimpleHttpClient
-from synapse.types import JsonDict, ThirdPartyInstanceID
+from synapse.types import DeviceListUpdates, JsonDict, ThirdPartyInstanceID
from synapse.util.caches.response_cache import ResponseCache
if TYPE_CHECKING:
@@ -225,6 +226,7 @@ class ApplicationServiceApi(SimpleHttpClient):
to_device_messages: List[JsonDict],
one_time_key_counts: TransactionOneTimeKeyCounts,
unused_fallback_keys: TransactionUnusedFallbackKeys,
+ device_list_summary: DeviceListUpdates,
txn_id: Optional[int] = None,
) -> bool:
"""
@@ -268,6 +270,7 @@ class ApplicationServiceApi(SimpleHttpClient):
}
)
+ # TODO: Update to stable prefixes once MSC3202 completes FCP merge
if service.msc3202_transaction_extensions:
if one_time_key_counts:
body[
@@ -277,6 +280,11 @@ class ApplicationServiceApi(SimpleHttpClient):
body[
"org.matrix.msc3202.device_unused_fallback_keys"
] = unused_fallback_keys
+ if device_list_summary:
+ body["org.matrix.msc3202.device_lists"] = {
+ "changed": list(device_list_summary.changed),
+ "left": list(device_list_summary.left),
+ }
try:
await self.put_json(
diff --git a/synapse/appservice/scheduler.py b/synapse/appservice/scheduler.py
index a6084b9c35..3b49e60716 100644
--- a/synapse/appservice/scheduler.py
+++ b/synapse/appservice/scheduler.py
@@ -72,7 +72,7 @@ from synapse.events import EventBase
from synapse.logging.context import run_in_background
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.databases.main import DataStore
-from synapse.types import JsonDict
+from synapse.types import DeviceListUpdates, JsonDict
from synapse.util import Clock
if TYPE_CHECKING:
@@ -122,6 +122,7 @@ class ApplicationServiceScheduler:
events: Optional[Collection[EventBase]] = None,
ephemeral: Optional[Collection[JsonDict]] = None,
to_device_messages: Optional[Collection[JsonDict]] = None,
+ device_list_summary: Optional[DeviceListUpdates] = None,
) -> None:
"""
Enqueue some data to be sent off to an application service.
@@ -133,10 +134,18 @@ class ApplicationServiceScheduler:
to_device_messages: The to-device messages to send. These differ from normal
to-device messages sent to clients, as they have 'to_device_id' and
'to_user_id' fields.
+ device_list_summary: A summary of users that the application service either needs
+ to refresh the device lists of, or those that the application service need no
+ longer track the device lists of.
"""
# We purposefully allow this method to run with empty events/ephemeral
# collections, so that callers do not need to check iterable size themselves.
- if not events and not ephemeral and not to_device_messages:
+ if (
+ not events
+ and not ephemeral
+ and not to_device_messages
+ and not device_list_summary
+ ):
return
if events:
@@ -147,6 +156,10 @@ class ApplicationServiceScheduler:
self.queuer.queued_to_device_messages.setdefault(appservice.id, []).extend(
to_device_messages
)
+ if device_list_summary:
+ self.queuer.queued_device_list_summaries.setdefault(
+ appservice.id, []
+ ).append(device_list_summary)
# Kick off a new application service transaction
self.queuer.start_background_request(appservice)
@@ -169,6 +182,8 @@ class _ServiceQueuer:
self.queued_ephemeral: Dict[str, List[JsonDict]] = {}
# dict of {service_id: [to_device_message_json]}
self.queued_to_device_messages: Dict[str, List[JsonDict]] = {}
+ # dict of {service_id: [device_list_summary]}
+ self.queued_device_list_summaries: Dict[str, List[DeviceListUpdates]] = {}
# the appservices which currently have a transaction in flight
self.requests_in_flight: Set[str] = set()
@@ -212,7 +227,35 @@ class _ServiceQueuer:
]
del all_to_device_messages[:MAX_TO_DEVICE_MESSAGES_PER_TRANSACTION]
- if not events and not ephemeral and not to_device_messages_to_send:
+ # Consolidate any pending device list summaries into a single, up-to-date
+ # summary.
+ # Note: this code assumes that in a single DeviceListUpdates, a user will
+ # never be in both "changed" and "left" sets.
+ device_list_summary = DeviceListUpdates()
+ for summary in self.queued_device_list_summaries.get(service.id, []):
+ # For every user in the incoming "changed" set:
+ # * Remove them from the existing "left" set if necessary
+ # (as we need to start tracking them again)
+ # * Add them to the existing "changed" set if necessary.
+ device_list_summary.left.difference_update(summary.changed)
+ device_list_summary.changed.update(summary.changed)
+
+ # For every user in the incoming "left" set:
+ # * Remove them from the existing "changed" set if necessary
+ # (we no longer need to track them)
+ # * Add them to the existing "left" set if necessary.
+ device_list_summary.changed.difference_update(summary.left)
+ device_list_summary.left.update(summary.left)
+ self.queued_device_list_summaries.clear()
+
+ if (
+ not events
+ and not ephemeral
+ and not to_device_messages_to_send
+ # DeviceListUpdates is True if either the 'changed' or 'left' sets have
+ # at least one entry, otherwise False
+ and not device_list_summary
+ ):
return
one_time_key_counts: Optional[TransactionOneTimeKeyCounts] = None
@@ -240,6 +283,7 @@ class _ServiceQueuer:
to_device_messages_to_send,
one_time_key_counts,
unused_fallback_keys,
+ device_list_summary,
)
except Exception:
logger.exception("AS request failed")
@@ -322,6 +366,7 @@ class _TransactionController:
to_device_messages: Optional[List[JsonDict]] = None,
one_time_key_counts: Optional[TransactionOneTimeKeyCounts] = None,
unused_fallback_keys: Optional[TransactionUnusedFallbackKeys] = None,
+ device_list_summary: Optional[DeviceListUpdates] = None,
) -> None:
"""
Create a transaction with the given data and send to the provided
@@ -336,6 +381,7 @@ class _TransactionController:
appservice devices in the transaction.
unused_fallback_keys: Lists of unused fallback keys for relevant
appservice devices in the transaction.
+ device_list_summary: The device list summary to include in the transaction.
"""
try:
txn = await self.store.create_appservice_txn(
@@ -345,6 +391,7 @@ class _TransactionController:
to_device_messages=to_device_messages or [],
one_time_key_counts=one_time_key_counts or {},
unused_fallback_keys=unused_fallback_keys or {},
+ device_list_summary=device_list_summary or DeviceListUpdates(),
)
service_is_up = await self._is_service_up(service)
if service_is_up:
diff --git a/synapse/config/appservice.py b/synapse/config/appservice.py
index 439bfe1526..ada165f238 100644
--- a/synapse/config/appservice.py
+++ b/synapse/config/appservice.py
@@ -170,6 +170,7 @@ def _load_appservice(
# When enabled, appservice transactions contain the following information:
# - device One-Time Key counts
# - device unused fallback key usage states
+ # - device list changes
msc3202_transaction_extensions = as_info.get("org.matrix.msc3202", False)
if not isinstance(msc3202_transaction_extensions, bool):
raise ValueError(
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index 064db4487c..d6bb1f752b 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -59,8 +59,9 @@ class ExperimentalConfig(Config):
"msc3202_device_masquerading", False
)
- # Portion of MSC3202 related to transaction extensions:
- # sending one-time key counts and fallback key usage to application services.
+ # The portion of MSC3202 related to transaction extensions:
+ # sending device list changes, one-time key counts and fallback key
+ # usage to application services.
self.msc3202_transaction_extensions: bool = experimental.get(
"msc3202_transaction_extensions", False
)
diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py
index bd913e524e..316c4b677c 100644
--- a/synapse/handlers/appservice.py
+++ b/synapse/handlers/appservice.py
@@ -33,7 +33,13 @@ from synapse.metrics.background_process_metrics import (
wrap_as_background_process,
)
from synapse.storage.databases.main.directory import RoomAliasMapping
-from synapse.types import JsonDict, RoomAlias, RoomStreamToken, UserID
+from synapse.types import (
+ DeviceListUpdates,
+ JsonDict,
+ RoomAlias,
+ RoomStreamToken,
+ UserID,
+)
from synapse.util.async_helpers import Linearizer
from synapse.util.metrics import Measure
@@ -58,6 +64,9 @@ class ApplicationServicesHandler:
self._msc2409_to_device_messages_enabled = (
hs.config.experimental.msc2409_to_device_messages_enabled
)
+ self._msc3202_transaction_extensions_enabled = (
+ hs.config.experimental.msc3202_transaction_extensions
+ )
self.current_max = 0
self.is_processing = False
@@ -204,9 +213,9 @@ class ApplicationServicesHandler:
Args:
stream_key: The stream the event came from.
- `stream_key` can be "typing_key", "receipt_key", "presence_key" or
- "to_device_key". Any other value for `stream_key` will cause this function
- to return early.
+ `stream_key` can be "typing_key", "receipt_key", "presence_key",
+ "to_device_key" or "device_list_key". Any other value for `stream_key`
+ will cause this function to return early.
Ephemeral events will only be pushed to appservices that have opted into
receiving them by setting `push_ephemeral` to true in their registration
@@ -230,6 +239,7 @@ class ApplicationServicesHandler:
"receipt_key",
"presence_key",
"to_device_key",
+ "device_list_key",
):
return
@@ -253,15 +263,37 @@ class ApplicationServicesHandler:
):
return
+ # Ignore device lists if the feature flag is not enabled
+ if (
+ stream_key == "device_list_key"
+ and not self._msc3202_transaction_extensions_enabled
+ ):
+ return
+
# Check whether there are any appservices which have registered to receive
# ephemeral events.
#
# Note that whether these events are actually relevant to these appservices
# is decided later on.
+ services = self.store.get_app_services()
services = [
service
- for service in self.store.get_app_services()
- if service.supports_ephemeral
+ for service in services
+ # Different stream keys require different support booleans
+ if (
+ stream_key
+ in (
+ "typing_key",
+ "receipt_key",
+ "presence_key",
+ "to_device_key",
+ )
+ and service.supports_ephemeral
+ )
+ or (
+ stream_key == "device_list_key"
+ and service.msc3202_transaction_extensions
+ )
]
if not services:
# Bail out early if none of the target appservices have explicitly registered
@@ -336,6 +368,20 @@ class ApplicationServicesHandler:
service, "to_device", new_token
)
+ elif stream_key == "device_list_key":
+ device_list_summary = await self._get_device_list_summary(
+ service, new_token
+ )
+ if device_list_summary:
+ self.scheduler.enqueue_for_appservice(
+ service, device_list_summary=device_list_summary
+ )
+
+ # Persist the latest handled stream token for this appservice
+ await self.store.set_appservice_stream_type_pos(
+ service, "device_list", new_token
+ )
+
async def _handle_typing(
self, service: ApplicationService, new_token: int
) -> List[JsonDict]:
@@ -542,6 +588,96 @@ class ApplicationServicesHandler:
return message_payload
+ async def _get_device_list_summary(
+ self,
+ appservice: ApplicationService,
+ new_key: int,
+ ) -> DeviceListUpdates:
+ """
+ Retrieve a list of users who have changed their device lists.
+
+ Args:
+ appservice: The application service to retrieve device list changes for.
+ new_key: The stream key of the device list change that triggered this method call.
+
+ Returns:
+ A set of device list updates, comprised of users that the appservices needs to:
+ * resync the device list of, and
+ * stop tracking the device list of.
+ """
+ # Fetch the last successfully processed device list update stream ID
+ # for this appservice.
+ from_key = await self.store.get_type_stream_id_for_appservice(
+ appservice, "device_list"
+ )
+
+ # Fetch the users who have modified their device list since then.
+ users_with_changed_device_lists = (
+ await self.store.get_users_whose_devices_changed(from_key, to_key=new_key)
+ )
+
+ # Filter out any users the application service is not interested in
+ #
+ # For each user who changed their device list, we want to check whether this
+ # appservice would be interested in the change.
+ filtered_users_with_changed_device_lists = {
+ user_id
+ for user_id in users_with_changed_device_lists
+ if await self._is_appservice_interested_in_device_lists_of_user(
+ appservice, user_id
+ )
+ }
+
+ # Create a summary of "changed" and "left" users.
+ # TODO: Calculate "left" users.
+ device_list_summary = DeviceListUpdates(
+ changed=filtered_users_with_changed_device_lists
+ )
+
+ return device_list_summary
+
+ async def _is_appservice_interested_in_device_lists_of_user(
+ self,
+ appservice: ApplicationService,
+ user_id: str,
+ ) -> bool:
+ """
+ Returns whether a given application service is interested in the device list
+ updates of a given user.
+
+ The application service is interested in the user's device list updates if any
+ of the following are true:
+ * The user is the appservice's sender localpart user.
+ * The user is in the appservice's user namespace.
+ * At least one member of one room that the user is a part of is in the
+ appservice's user namespace.
+ * The appservice is explicitly (via room ID or alias) interested in at
+ least one room that the user is in.
+
+ Args:
+ appservice: The application service to gauge interest of.
+ user_id: The ID of the user whose device list interest is in question.
+
+ Returns:
+ True if the application service is interested in the user's device lists, False
+ otherwise.
+ """
+ # This method checks against both the sender localpart user as well as if the
+ # user is in the appservice's user namespace.
+ if appservice.is_interested_in_user(user_id):
+ return True
+
+ # Determine whether any of the rooms the user is in justifies sending this
+ # device list update to the application service.
+ room_ids = await self.store.get_rooms_for_user(user_id)
+ for room_id in room_ids:
+ # This method covers checking room members for appservice interest as well as
+ # room ID and alias checks.
+ if await appservice.is_interested_in_room(room_id, self.store):
+ return True
+
+ return False
+
async def query_user_exists(self, user_id: str) -> bool:
"""Check if any application service knows this user_id exists.
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index bceafca3b1..303c38c746 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -13,17 +13,7 @@
# limitations under the License.
import itertools
import logging
-from typing import (
- TYPE_CHECKING,
- Any,
- Collection,
- Dict,
- FrozenSet,
- List,
- Optional,
- Set,
- Tuple,
-)
+from typing import TYPE_CHECKING, Any, Dict, FrozenSet, List, Optional, Set, Tuple
import attr
from prometheus_client import Counter
@@ -41,6 +31,7 @@ from synapse.storage.databases.main.event_push_actions import NotifCounts
from synapse.storage.roommember import MemberSummary
from synapse.storage.state import StateFilter
from synapse.types import (
+ DeviceListUpdates,
JsonDict,
MutableStateMap,
Requester,
@@ -184,21 +175,6 @@ class GroupsSyncResult:
return bool(self.join or self.invite or self.leave)
-@attr.s(slots=True, frozen=True, auto_attribs=True)
-class DeviceLists:
- """
- Attributes:
- changed: List of user_ids whose devices may have changed
- left: List of user_ids whose devices we no longer track
- """
-
- changed: Collection[str]
- left: Collection[str]
-
- def __bool__(self) -> bool:
- return bool(self.changed or self.left)
-
-
@attr.s(slots=True, auto_attribs=True)
class _RoomChanges:
"""The set of room entries to include in the sync, plus the set of joined
@@ -240,7 +216,7 @@ class SyncResult:
knocked: List[KnockedSyncResult]
archived: List[ArchivedSyncResult]
to_device: List[JsonDict]
- device_lists: DeviceLists
+ device_lists: DeviceListUpdates
device_one_time_keys_count: JsonDict
device_unused_fallback_key_types: List[str]
groups: Optional[GroupsSyncResult]
@@ -1264,8 +1240,8 @@ class SyncHandler:
newly_joined_or_invited_or_knocked_users: Set[str],
newly_left_rooms: Set[str],
newly_left_users: Set[str],
- ) -> DeviceLists:
- """Generate the DeviceLists section of sync
+ ) -> DeviceListUpdates:
+ """Generate the DeviceListUpdates section of sync
Args:
sync_result_builder
@@ -1383,9 +1359,11 @@ class SyncHandler:
if any(e.room_id in joined_rooms for e in entries):
newly_left_users.discard(user_id)
- return DeviceLists(changed=users_that_have_changed, left=newly_left_users)
+ return DeviceListUpdates(
+ changed=users_that_have_changed, left=newly_left_users
+ )
else:
- return DeviceLists(changed=[], left=[])
+ return DeviceListUpdates()
async def _generate_sync_entry_for_to_device(
self, sync_result_builder: "SyncResultBuilder"
diff --git a/synapse/storage/databases/main/appservice.py b/synapse/storage/databases/main/appservice.py
index abea4383c7..55e1ab099d 100644
--- a/synapse/storage/databases/main/appservice.py
+++ b/synapse/storage/databases/main/appservice.py
@@ -29,7 +29,7 @@ from synapse.storage._base import db_to_json
from synapse.storage.database import DatabasePool, LoggingDatabaseConnection
from synapse.storage.databases.main.events_worker import EventsWorkerStore
from synapse.storage.databases.main.roommember import RoomMemberWorkerStore
-from synapse.types import JsonDict
+from synapse.types import DeviceListUpdates, JsonDict
from synapse.util import json_encoder
from synapse.util.caches.descriptors import _CacheContext, cached
@@ -217,6 +217,7 @@ class ApplicationServiceTransactionWorkerStore(
to_device_messages: List[JsonDict],
one_time_key_counts: TransactionOneTimeKeyCounts,
unused_fallback_keys: TransactionUnusedFallbackKeys,
+ device_list_summary: DeviceListUpdates,
) -> AppServiceTransaction:
"""Atomically creates a new transaction for this application service
with the given list of events. Ephemeral events are NOT persisted to the
@@ -231,6 +232,7 @@ class ApplicationServiceTransactionWorkerStore(
appservice devices in the transaction.
unused_fallback_keys: Lists of unused fallback keys for relevant
appservice devices in the transaction.
+ device_list_summary: The device list summary to include in the transaction.
Returns:
A new transaction.
@@ -268,6 +270,7 @@ class ApplicationServiceTransactionWorkerStore(
to_device_messages=to_device_messages,
one_time_key_counts=one_time_key_counts,
unused_fallback_keys=unused_fallback_keys,
+ device_list_summary=device_list_summary,
)
return await self.db_pool.runInteraction(
@@ -359,8 +362,8 @@ class ApplicationServiceTransactionWorkerStore(
events = await self.get_events_as_list(event_ids)
- # TODO: to-device messages, one-time key counts and unused fallback keys
- # are not yet populated for catch-up transactions.
+ # TODO: to-device messages, one-time key counts, device list summaries and unused
+ # fallback keys are not yet populated for catch-up transactions.
# We likely want to populate those for reliability.
return AppServiceTransaction(
service=service,
@@ -370,6 +373,7 @@ class ApplicationServiceTransactionWorkerStore(
to_device_messages=[],
one_time_key_counts={},
unused_fallback_keys={},
+ device_list_summary=DeviceListUpdates(),
)
def _get_last_txn(self, txn, service_id: Optional[str]) -> int:
@@ -430,7 +434,7 @@ class ApplicationServiceTransactionWorkerStore(
async def get_type_stream_id_for_appservice(
self, service: ApplicationService, type: str
) -> int:
- if type not in ("read_receipt", "presence", "to_device"):
+ if type not in ("read_receipt", "presence", "to_device", "device_list"):
raise ValueError(
"Expected type to be a valid application stream id type, got %s"
% (type,)
@@ -458,7 +462,7 @@ class ApplicationServiceTransactionWorkerStore(
async def set_appservice_stream_type_pos(
self, service: ApplicationService, stream_type: str, pos: Optional[int]
) -> None:
- if stream_type not in ("read_receipt", "presence", "to_device"):
+ if stream_type not in ("read_receipt", "presence", "to_device", "device_list"):
raise ValueError(
"Expected type to be a valid application stream id type, got %s"
% (stream_type,)
diff --git a/synapse/storage/databases/main/devices.py b/synapse/storage/databases/main/devices.py
index 3b3a089b76..f08f7834d3 100644
--- a/synapse/storage/databases/main/devices.py
+++ b/synapse/storage/databases/main/devices.py
@@ -681,42 +681,64 @@ class DeviceWorkerStore(SQLBaseStore):
return self._device_list_stream_cache.get_all_entities_changed(from_key)
async def get_users_whose_devices_changed(
- self, from_key: int, user_ids: Iterable[str]
+ self,
+ from_key: int,
+ user_ids: Optional[Iterable[str]] = None,
+ to_key: Optional[int] = None,
) -> Set[str]:
"""Get set of users whose devices have changed since `from_key` that
are in the given list of user_ids.
Args:
- from_key: The device lists stream token
- user_ids: The user IDs to query for devices.
+ from_key: The minimum device lists stream token to query device list changes for,
+ exclusive.
+ user_ids: If provided, only check if these users have changed their device lists.
+ Otherwise changes from all users are returned.
+ to_key: The maximum device lists stream token to query device list changes for,
+ inclusive.
Returns:
- The set of user_ids whose devices have changed since `from_key`
+ The set of user_ids whose devices have changed since `from_key` (exclusive)
+ until `to_key` (inclusive).
"""
-
# Get set of users who *may* have changed. Users not in the returned
# list have definitely not changed.
- to_check = self._device_list_stream_cache.get_entities_changed(
- user_ids, from_key
- )
+ if user_ids is None:
+ # Get set of all users that have had device list changes since 'from_key'
+ user_ids_to_check = self._device_list_stream_cache.get_all_entities_changed(
+ from_key
+ )
+ else:
+ # The same as above, but filter results to only those users in 'user_ids'
+ user_ids_to_check = self._device_list_stream_cache.get_entities_changed(
+ user_ids, from_key
+ )
- if not to_check:
+ if not user_ids_to_check:
return set()
def _get_users_whose_devices_changed_txn(txn):
changes = set()
- sql = """
+ stream_id_where_clause = "stream_id > ?"
+ sql_args = [from_key]
+
+ if to_key:
+ stream_id_where_clause += " AND stream_id <= ?"
+ sql_args.append(to_key)
+
+ sql = f"""
SELECT DISTINCT user_id FROM device_lists_stream
- WHERE stream_id > ?
+ WHERE {stream_id_where_clause}
AND
"""
- for chunk in batch_iter(to_check, 100):
+ # Query device changes with a batch of users at a time
+ for chunk in batch_iter(user_ids_to_check, 100):
clause, args = make_in_list_sql_clause(
txn.database_engine, "user_id", chunk
)
- txn.execute(sql + clause, (from_key,) + tuple(args))
+ txn.execute(sql + clause, sql_args + args)
changes.update(user_id for user_id, in txn)
return changes
diff --git a/synapse/storage/schema/main/delta/68/06_msc3202_add_device_list_appservice_stream_type.sql b/synapse/storage/schema/main/delta/68/06_msc3202_add_device_list_appservice_stream_type.sql
new file mode 100644
index 0000000000..7590e34b94
--- /dev/null
+++ b/synapse/storage/schema/main/delta/68/06_msc3202_add_device_list_appservice_stream_type.sql
@@ -0,0 +1,23 @@
+/* Copyright 2022 The Matrix.org Foundation C.I.C
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- Add a column to track what device list changes stream id that this application
+-- service has been caught up to.
+
+-- We explicitly don't set this field as "NOT NULL", as having NULL as a possible
+-- state is useful for determining if we've ever sent traffic for a stream type
+-- to an appservice. See https://github.com/matrix-org/synapse/issues/10836 for
+-- one way this can be used.
+ALTER TABLE application_services_state ADD COLUMN device_list_stream_id BIGINT;
\ No newline at end of file
diff --git a/synapse/types.py b/synapse/types.py
index 5ce2a5b0a5..500597b3a4 100644
--- a/synapse/types.py
+++ b/synapse/types.py
@@ -25,6 +25,7 @@ from typing import (
Match,
MutableMapping,
Optional,
+ Set,
Tuple,
Type,
TypeVar,
@@ -748,6 +749,30 @@ class ReadReceipt:
data: JsonDict
+@attr.s(slots=True, frozen=True, auto_attribs=True)
+class DeviceListUpdates:
+ """
+ An object containing a diff of information regarding other users' device lists, intended for
+ a recipient to carry out device list tracking.
+
+ Attributes:
+ changed: A set of users whose device lists have changed recently.
+ left: A set of users who the recipient no longer needs to track the device lists of.
+ Typically when those users no longer share any end-to-end encryption enabled rooms.
+ """
+
+ # We need to use a factory here, otherwise `set` is not evaluated at
+ # object instantiation, but instead at class definition instantiation.
+ # The latter happening only once, thus always giving you the same sets
+ # across multiple DeviceListUpdates instances.
+ # Also see: don't define mutable default arguments.
+ changed: Set[str] = attr.ib(factory=set)
+ left: Set[str] = attr.ib(factory=set)
+
+ def __bool__(self) -> bool:
+ return bool(self.changed or self.left)
+
+
def get_verify_key_from_cross_signing_key(key_info):
"""Get the key ID and signedjson verify key from a cross-signing key dict
|
