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Merge pull request #5209 from matrix-org/erikj/reactions_base

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Land basic reaction and edit support.
This commit is contained in:
Erik Johnston 2019-05-20 14:06:40 +01:00 committed by GitHub
parent 3787133c9e 06671057b6
commit 57ba3451b6
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 1439 additions and 16 deletions
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1
changelog.d/5209.feature Normal file
View file

@ -0,0 +1 @@
Add experimental support for relations (aka reactions and edits).

8
synapse/api/constants.py
View file

@ -119,3 +119,11 @@ class UserTypes(object):
"""
SUPPORT = "support"
ALL_USER_TYPES = (SUPPORT,)
class RelationTypes(object):
"""The types of relations known to this server.
"""
ANNOTATION = "m.annotation"
REPLACES = "m.replaces"
REFERENCES = "m.references"

5
synapse/config/server.py
View file

@ -101,6 +101,11 @@ class ServerConfig(Config):
"block_non_admin_invites", False,
)
# Whether to enable experimental MSC1849 (aka relations) support
self.experimental_msc1849_support_enabled = config.get(
"experimental_msc1849_support_enabled", False,
)
# Options to control access by tracking MAU
self.limit_usage_by_mau = config.get("limit_usage_by_mau", False)
self.max_mau_value = 0

56
synapse/events/utils.py
View file

@ -21,7 +21,7 @@ from frozendict import frozendict
from twisted.internet import defer
from synapse.api.constants import EventTypes
from synapse.api.constants import EventTypes, RelationTypes
from synapse.util.async_helpers import yieldable_gather_results
from . import EventBase
@ -324,8 +324,12 @@ class EventClientSerializer(object):
"""
def __init__(self, hs):
pass
self.store = hs.get_datastore()
self.experimental_msc1849_support_enabled = (
hs.config.experimental_msc1849_support_enabled
)
@defer.inlineCallbacks
def serialize_event(self, event, time_now, **kwargs):
"""Serializes a single event.
@ -337,8 +341,52 @@ class EventClientSerializer(object):
Returns:
Deferred[dict]: The serialized event
"""
event = serialize_event(event, time_now, **kwargs)
return defer.succeed(event)
# To handle the case of presence events and the like
if not isinstance(event, EventBase):
defer.returnValue(event)
event_id = event.event_id
serialized_event = serialize_event(event, time_now, **kwargs)
# If MSC1849 is enabled then we need to look if thre are any relations
# we need to bundle in with the event
if self.experimental_msc1849_support_enabled:
annotations = yield self.store.get_aggregation_groups_for_event(
event_id,
)
references = yield self.store.get_relations_for_event(
event_id, RelationTypes.REFERENCES, direction="f",
)
if annotations.chunk:
r = serialized_event["unsigned"].setdefault("m.relations", {})
r[RelationTypes.ANNOTATION] = annotations.to_dict()
if references.chunk:
r = serialized_event["unsigned"].setdefault("m.relations", {})
r[RelationTypes.REFERENCES] = references.to_dict()
edit = None
if event.type == EventTypes.Message:
edit = yield self.store.get_applicable_edit(event_id)
if edit:
# If there is an edit replace the content, preserving existing
# relations.
relations = event.content.get("m.relates_to")
serialized_event["content"] = edit.content.get("m.new_content", {})
if relations:
serialized_event["content"]["m.relates_to"] = relations
else:
serialized_event["content"].pop("m.relates_to", None)
r = serialized_event["unsigned"].setdefault("m.relations", {})
r[RelationTypes.REPLACES] = {
"event_id": edit.event_id,
}
defer.returnValue(serialized_event)
def serialize_events(self, events, time_now, **kwargs):
"""Serializes multiple events.

14
synapse/replication/slave/storage/events.py
View file

@ -23,6 +23,7 @@ from synapse.replication.tcp.streams.events import (
from synapse.storage.event_federation import EventFederationWorkerStore
from synapse.storage.event_push_actions import EventPushActionsWorkerStore
from synapse.storage.events_worker import EventsWorkerStore
from synapse.storage.relations import RelationsWorkerStore
from synapse.storage.roommember import RoomMemberWorkerStore
from synapse.storage.signatures import SignatureWorkerStore
from synapse.storage.state import StateGroupWorkerStore
@ -52,6 +53,7 @@ class SlavedEventStore(EventFederationWorkerStore,
EventsWorkerStore,
SignatureWorkerStore,
UserErasureWorkerStore,
RelationsWorkerStore,
BaseSlavedStore):
def __init__(self, db_conn, hs):
@ -89,7 +91,7 @@ class SlavedEventStore(EventFederationWorkerStore,
for row in rows:
self.invalidate_caches_for_event(
-token, row.event_id, row.room_id, row.type, row.state_key,
row.redacts,
row.redacts, row.relates_to,
backfilled=True,
)
return super(SlavedEventStore, self).process_replication_rows(
@ -102,7 +104,7 @@ class SlavedEventStore(EventFederationWorkerStore,
if row.type == EventsStreamEventRow.TypeId:
self.invalidate_caches_for_event(
token, data.event_id, data.room_id, data.type, data.state_key,
data.redacts,
data.redacts, data.relates_to,
backfilled=False,
)
elif row.type == EventsStreamCurrentStateRow.TypeId:
@ -114,7 +116,8 @@ class SlavedEventStore(EventFederationWorkerStore,
raise Exception("Unknown events stream row type %s" % (row.type, ))
def invalidate_caches_for_event(self, stream_ordering, event_id, room_id,
etype, state_key, redacts, backfilled):
etype, state_key, redacts, relates_to,
backfilled):
self._invalidate_get_event_cache(event_id)
self.get_latest_event_ids_in_room.invalidate((room_id,))
@ -136,3 +139,8 @@ class SlavedEventStore(EventFederationWorkerStore,
state_key, stream_ordering
)
self.get_invited_rooms_for_user.invalidate((state_key,))
if relates_to:
self.get_relations_for_event.invalidate_many((relates_to,))
self.get_aggregation_groups_for_event.invalidate_many((relates_to,))
self.get_applicable_edit.invalidate((relates_to,))

1
synapse/replication/tcp/streams/_base.py
View file

@ -32,6 +32,7 @@ BackfillStreamRow = namedtuple("BackfillStreamRow", (
"type", # str
"state_key", # str, optional
"redacts", # str, optional
"relates_to", # str, optional
))
PresenceStreamRow = namedtuple("PresenceStreamRow", (
"user_id", # str

11
synapse/replication/tcp/streams/events.py
View file

@ -80,11 +80,12 @@ class BaseEventsStreamRow(object):
class EventsStreamEventRow(BaseEventsStreamRow):
TypeId = "ev"
event_id = attr.ib() # str
room_id = attr.ib() # str
type = attr.ib() # str
state_key = attr.ib() # str, optional
redacts = attr.ib() # str, optional
event_id = attr.ib() # str
room_id = attr.ib() # str
type = attr.ib() # str
state_key = attr.ib() # str, optional
redacts = attr.ib() # str, optional
relates_to = attr.ib() # str, optional
@attr.s(slots=True, frozen=True)

2
synapse/rest/__init__.py
View file

@ -44,6 +44,7 @@ from synapse.rest.client.v2_alpha import (
read_marker,
receipts,
register,
relations,
report_event,
room_keys,
room_upgrade_rest_servlet,
@ -115,6 +116,7 @@ class ClientRestResource(JsonResource):
room_upgrade_rest_servlet.register_servlets(hs, client_resource)
capabilities.register_servlets(hs, client_resource)
account_validity.register_servlets(hs, client_resource)
relations.register_servlets(hs, client_resource)
# moving to /_synapse/admin
synapse.rest.admin.register_servlets_for_client_rest_resource(

338
synapse/rest/client/v2_alpha/relations.py Normal file
View file

@ -0,0 +1,338 @@
# -*- coding: utf-8 -*-
# Copyright 2019 New Vector Ltd
#
# 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.
"""This class implements the proposed relation APIs from MSC 1849.
Since the MSC has not been approved all APIs here are unstable and may change at
any time to reflect changes in the MSC.
"""
import logging
from twisted.internet import defer
from synapse.api.constants import EventTypes, RelationTypes
from synapse.api.errors import SynapseError
from synapse.http.servlet import (
RestServlet,
parse_integer,
parse_json_object_from_request,
parse_string,
)
from synapse.rest.client.transactions import HttpTransactionCache
from synapse.storage.relations import AggregationPaginationToken, RelationPaginationToken
from ._base import client_v2_patterns
logger = logging.getLogger(__name__)
class RelationSendServlet(RestServlet):
"""Helper API for sending events that have relation data.
Example API shape to send a 👍 reaction to a room:
POST /rooms/!foo/send_relation/$bar/m.annotation/m.reaction?key=%F0%9F%91%8D
{}
{
"event_id": "$foobar"
}
"""
PATTERN = (
"/rooms/(?P<room_id>[^/]*)/send_relation"
"/(?P<parent_id>[^/]*)/(?P<relation_type>[^/]*)/(?P<event_type>[^/]*)"
)
def __init__(self, hs):
super(RelationSendServlet, self).__init__()
self.auth = hs.get_auth()
self.event_creation_handler = hs.get_event_creation_handler()
self.txns = HttpTransactionCache(hs)
def register(self, http_server):
http_server.register_paths(
"POST",
client_v2_patterns(self.PATTERN + "$", releases=()),
self.on_PUT_or_POST,
)
http_server.register_paths(
"PUT",
client_v2_patterns(self.PATTERN + "/(?P<txn_id>[^/]*)$", releases=()),
self.on_PUT,
)
def on_PUT(self, request, *args, **kwargs):
return self.txns.fetch_or_execute_request(
request, self.on_PUT_or_POST, request, *args, **kwargs
)
@defer.inlineCallbacks
def on_PUT_or_POST(
self, request, room_id, parent_id, relation_type, event_type, txn_id=None
):
requester = yield self.auth.get_user_by_req(request, allow_guest=True)
if event_type == EventTypes.Member:
# Add relations to a membership is meaningless, so we just deny it
# at the CS API rather than trying to handle it correctly.
raise SynapseError(400, "Cannot send member events with relations")
content = parse_json_object_from_request(request)
aggregation_key = parse_string(request, "key", encoding="utf-8")
content["m.relates_to"] = {
"event_id": parent_id,
"key": aggregation_key,
"rel_type": relation_type,
}
event_dict = {
"type": event_type,
"content": content,
"room_id": room_id,
"sender": requester.user.to_string(),
}
event = yield self.event_creation_handler.create_and_send_nonmember_event(
requester, event_dict=event_dict, txn_id=txn_id
)
defer.returnValue((200, {"event_id": event.event_id}))
class RelationPaginationServlet(RestServlet):
"""API to paginate relations on an event by topological ordering, optionally
filtered by relation type and event type.
"""
PATTERNS = client_v2_patterns(
"/rooms/(?P<room_id>[^/]*)/relations/(?P<parent_id>[^/]*)"
"(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
releases=(),
)
def __init__(self, hs):
super(RelationPaginationServlet, self).__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self._event_serializer = hs.get_event_client_serializer()
self.event_handler = hs.get_event_handler()
@defer.inlineCallbacks
def on_GET(self, request, room_id, parent_id, relation_type=None, event_type=None):
requester = yield self.auth.get_user_by_req(request, allow_guest=True)
yield self.auth.check_in_room_or_world_readable(
room_id, requester.user.to_string()
)
# This checks that a) the event exists and b) the user is allowed to
# view it.
yield self.event_handler.get_event(requester.user, room_id, parent_id)
limit = parse_integer(request, "limit", default=5)
from_token = parse_string(request, "from")
to_token = parse_string(request, "to")
if from_token:
from_token = RelationPaginationToken.from_string(from_token)
if to_token:
to_token = RelationPaginationToken.from_string(to_token)
result = yield self.store.get_relations_for_event(
event_id=parent_id,
relation_type=relation_type,
event_type=event_type,
limit=limit,
from_token=from_token,
to_token=to_token,
)
events = yield self.store.get_events_as_list(
[c["event_id"] for c in result.chunk]
)
now = self.clock.time_msec()
events = yield self._event_serializer.serialize_events(events, now)
return_value = result.to_dict()
return_value["chunk"] = events
defer.returnValue((200, return_value))
class RelationAggregationPaginationServlet(RestServlet):
"""API to paginate aggregation groups of relations, e.g. paginate the
types and counts of the reactions on the events.
Example request and response:
GET /rooms/{room_id}/aggregations/{parent_id}
{
chunk: [
{
"type": "m.reaction",
"key": "👍",
"count": 3
}
]
}
"""
PATTERNS = client_v2_patterns(
"/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
"(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
releases=(),
)
def __init__(self, hs):
super(RelationAggregationPaginationServlet, self).__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
self.event_handler = hs.get_event_handler()
@defer.inlineCallbacks
def on_GET(self, request, room_id, parent_id, relation_type=None, event_type=None):
requester = yield self.auth.get_user_by_req(request, allow_guest=True)
yield self.auth.check_in_room_or_world_readable(
room_id, requester.user.to_string()
)
# This checks that a) the event exists and b) the user is allowed to
# view it.
yield self.event_handler.get_event(requester.user, room_id, parent_id)
if relation_type not in (RelationTypes.ANNOTATION, None):
raise SynapseError(400, "Relation type must be 'annotation'")
limit = parse_integer(request, "limit", default=5)
from_token = parse_string(request, "from")
to_token = parse_string(request, "to")
if from_token:
from_token = AggregationPaginationToken.from_string(from_token)
if to_token:
to_token = AggregationPaginationToken.from_string(to_token)
res = yield self.store.get_aggregation_groups_for_event(
event_id=parent_id,
event_type=event_type,
limit=limit,
from_token=from_token,
to_token=to_token,
)
defer.returnValue((200, res.to_dict()))
class RelationAggregationGroupPaginationServlet(RestServlet):
"""API to paginate within an aggregation group of relations, e.g. paginate
all the 👍 reactions on an event.
Example request and response:
GET /rooms/{room_id}/aggregations/{parent_id}/m.annotation/m.reaction/👍
{
chunk: [
{
"type": "m.reaction",
"content": {
"m.relates_to": {
"rel_type": "m.annotation",
"key": "👍"
}
}
},
...
]
}
"""
PATTERNS = client_v2_patterns(
"/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
"/(?P<relation_type>[^/]*)/(?P<event_type>[^/]*)/(?P<key>[^/]*)$",
releases=(),
)
def __init__(self, hs):
super(RelationAggregationGroupPaginationServlet, self).__init__()
self.auth = hs.get_auth()
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self._event_serializer = hs.get_event_client_serializer()
self.event_handler = hs.get_event_handler()
@defer.inlineCallbacks
def on_GET(self, request, room_id, parent_id, relation_type, event_type, key):
requester = yield self.auth.get_user_by_req(request, allow_guest=True)
yield self.auth.check_in_room_or_world_readable(
room_id, requester.user.to_string()
)
# This checks that a) the event exists and b) the user is allowed to
# view it.
yield self.event_handler.get_event(requester.user, room_id, parent_id)
if relation_type != RelationTypes.ANNOTATION:
raise SynapseError(400, "Relation type must be 'annotation'")
limit = parse_integer(request, "limit", default=5)
from_token = parse_string(request, "from")
to_token = parse_string(request, "to")
if from_token:
from_token = RelationPaginationToken.from_string(from_token)
if to_token:
to_token = RelationPaginationToken.from_string(to_token)
result = yield self.store.get_relations_for_event(
event_id=parent_id,
relation_type=relation_type,
event_type=event_type,
aggregation_key=key,
limit=limit,
from_token=from_token,
to_token=to_token,
)
events = yield self.store.get_events_as_list(
[c["event_id"] for c in result.chunk]
)
now = self.clock.time_msec()
events = yield self._event_serializer.serialize_events(events, now)
return_value = result.to_dict()
return_value["chunk"] = events
defer.returnValue((200, return_value))
def register_servlets(hs, http_server):
RelationSendServlet(hs).register(http_server)
RelationPaginationServlet(hs).register(http_server)
RelationAggregationPaginationServlet(hs).register(http_server)
RelationAggregationGroupPaginationServlet(hs).register(http_server)

2
synapse/storage/__init__.py
View file

@ -49,6 +49,7 @@ from .pusher import PusherStore
from .receipts import ReceiptsStore
from .registration import RegistrationStore
from .rejections import RejectionsStore
from .relations import RelationsStore
from .room import RoomStore
from .roommember import RoomMemberStore
from .search import SearchStore
@ -99,6 +100,7 @@ class DataStore(
GroupServerStore,
UserErasureStore,
MonthlyActiveUsersStore,
RelationsStore,
):
def __init__(self, db_conn, hs):
self.hs = hs

17
synapse/storage/events.py
View file

@ -1325,6 +1325,9 @@ class EventsStore(
txn, event.room_id, event.redacts
)
# Remove from relations table.
self._handle_redaction(txn, event.redacts)
# Update the event_forward_extremities, event_backward_extremities and
# event_edges tables.
self._handle_mult_prev_events(
@ -1351,6 +1354,8 @@ class EventsStore(
# Insert into the event_search table.
self._store_guest_access_txn(txn, event)
self._handle_event_relations(txn, event)
# Insert into the room_memberships table.
self._store_room_members_txn(
txn,
@ -1655,10 +1660,11 @@ class EventsStore(
def get_all_new_forward_event_rows(txn):
sql = (
"SELECT e.stream_ordering, e.event_id, e.room_id, e.type,"
" state_key, redacts"
" state_key, redacts, relates_to_id"
" FROM events AS e"
" LEFT JOIN redactions USING (event_id)"
" LEFT JOIN state_events USING (event_id)"
" LEFT JOIN event_relations USING (event_id)"
" WHERE ? < stream_ordering AND stream_ordering <= ?"
" ORDER BY stream_ordering ASC"
" LIMIT ?"
@ -1673,11 +1679,12 @@ class EventsStore(
sql = (
"SELECT event_stream_ordering, e.event_id, e.room_id, e.type,"
" state_key, redacts"
" state_key, redacts, relates_to_id"
" FROM events AS e"
" INNER JOIN ex_outlier_stream USING (event_id)"
" LEFT JOIN redactions USING (event_id)"
" LEFT JOIN state_events USING (event_id)"
" LEFT JOIN event_relations USING (event_id)"
" WHERE ? < event_stream_ordering"
" AND event_stream_ordering <= ?"
" ORDER BY event_stream_ordering DESC"
@ -1698,10 +1705,11 @@ class EventsStore(
def get_all_new_backfill_event_rows(txn):
sql = (
"SELECT -e.stream_ordering, e.event_id, e.room_id, e.type,"
" state_key, redacts"
" state_key, redacts, relates_to_id"
" FROM events AS e"
" LEFT JOIN redactions USING (event_id)"
" LEFT JOIN state_events USING (event_id)"
" LEFT JOIN event_relations USING (event_id)"
" WHERE ? > stream_ordering AND stream_ordering >= ?"
" ORDER BY stream_ordering ASC"
" LIMIT ?"
@ -1716,11 +1724,12 @@ class EventsStore(
sql = (
"SELECT -event_stream_ordering, e.event_id, e.room_id, e.type,"
" state_key, redacts"
" state_key, redacts, relates_to_id"
" FROM events AS e"
" INNER JOIN ex_outlier_stream USING (event_id)"
" LEFT JOIN redactions USING (event_id)"
" LEFT JOIN state_events USING (event_id)"
" LEFT JOIN event_relations USING (event_id)"
" WHERE ? > event_stream_ordering"
" AND event_stream_ordering >= ?"
" ORDER BY event_stream_ordering DESC"

434
synapse/storage/relations.py Normal file
View file

@ -0,0 +1,434 @@
# -*- coding: utf-8 -*-
# Copyright 2019 New Vector Ltd
#
# 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.
import logging
import attr
from twisted.internet import defer
from synapse.api.constants import RelationTypes
from synapse.api.errors import SynapseError
from synapse.storage._base import SQLBaseStore
from synapse.storage.stream import generate_pagination_where_clause
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
logger = logging.getLogger(__name__)
@attr.s
class PaginationChunk(object):
"""Returned by relation pagination APIs.
Attributes:
chunk (list): The rows returned by pagination
next_batch (Any|None): Token to fetch next set of results with, if
None then there are no more results.
prev_batch (Any|None): Token to fetch previous set of results with, if
None then there are no previous results.
"""
chunk = attr.ib()
next_batch = attr.ib(default=None)
prev_batch = attr.ib(default=None)
def to_dict(self):
d = {"chunk": self.chunk}
if self.next_batch:
d["next_batch"] = self.next_batch.to_string()
if self.prev_batch:
d["prev_batch"] = self.prev_batch.to_string()
return d
@attr.s(frozen=True, slots=True)
class RelationPaginationToken(object):
"""Pagination token for relation pagination API.
As the results are order by topological ordering, we can use the
`topological_ordering` and `stream_ordering` fields of the events at the
boundaries of the chunk as pagination tokens.
Attributes:
topological (int): The topological ordering of the boundary event
stream (int): The stream ordering of the boundary event.
"""
topological = attr.ib()
stream = attr.ib()
@staticmethod
def from_string(string):
try:
t, s = string.split("-")
return RelationPaginationToken(int(t), int(s))
except ValueError:
raise SynapseError(400, "Invalid token")
def to_string(self):
return "%d-%d" % (self.topological, self.stream)
def as_tuple(self):
return attr.astuple(self)
@attr.s(frozen=True, slots=True)
class AggregationPaginationToken(object):
"""Pagination token for relation aggregation pagination API.
As the results are order by count and then MAX(stream_ordering) of the
aggregation groups, we can just use them as our pagination token.
Attributes:
count (int): The count of relations in the boundar group.
stream (int): The MAX stream ordering in the boundary group.
"""
count = attr.ib()
stream = attr.ib()
@staticmethod
def from_string(string):
try:
c, s = string.split("-")
return AggregationPaginationToken(int(c), int(s))
except ValueError:
raise SynapseError(400, "Invalid token")
def to_string(self):
return "%d-%d" % (self.count, self.stream)
def as_tuple(self):
return attr.astuple(self)
class RelationsWorkerStore(SQLBaseStore):
@cached(tree=True)
def get_relations_for_event(
self,
event_id,
relation_type=None,
event_type=None,
aggregation_key=None,
limit=5,
direction="b",
from_token=None,
to_token=None,
):
"""Get a list of relations for an event, ordered by topological ordering.
Args:
event_id (str): Fetch events that relate to this event ID.
relation_type (str|None): Only fetch events with this relation
type, if given.
event_type (str|None): Only fetch events with this event type, if
given.
aggregation_key (str|None): Only fetch events with this aggregation
key, if given.
limit (int): Only fetch the most recent `limit` events.
direction (str): Whether to fetch the most recent first (`"b"`) or
the oldest first (`"f"`).
from_token (RelationPaginationToken|None): Fetch rows from the given
token, or from the start if None.
to_token (RelationPaginationToken|None): Fetch rows up to the given
token, or up to the end if None.
Returns:
Deferred[PaginationChunk]: List of event IDs that match relations
requested. The rows are of the form `{"event_id": "..."}`.
"""
where_clause = ["relates_to_id = ?"]
where_args = [event_id]
if relation_type is not None:
where_clause.append("relation_type = ?")
where_args.append(relation_type)
if event_type is not None:
where_clause.append("type = ?")
where_args.append(event_type)
if aggregation_key:
where_clause.append("aggregation_key = ?")
where_args.append(aggregation_key)
pagination_clause = generate_pagination_where_clause(
direction=direction,
column_names=("topological_ordering", "stream_ordering"),
from_token=attr.astuple(from_token) if from_token else None,
to_token=attr.astuple(to_token) if to_token else None,
engine=self.database_engine,
)
if pagination_clause:
where_clause.append(pagination_clause)
if direction == "b":
order = "DESC"
else:
order = "ASC"
sql = """
SELECT event_id, topological_ordering, stream_ordering
FROM event_relations
INNER JOIN events USING (event_id)
WHERE %s
ORDER BY topological_ordering %s, stream_ordering %s
LIMIT ?
""" % (
" AND ".join(where_clause),
order,
order,
)
def _get_recent_references_for_event_txn(txn):
txn.execute(sql, where_args + [limit + 1])
last_topo_id = None
last_stream_id = None
events = []
for row in txn:
events.append({"event_id": row[0]})
last_topo_id = row[1]
last_stream_id = row[2]
next_batch = None
if len(events) > limit and last_topo_id and last_stream_id:
next_batch = RelationPaginationToken(last_topo_id, last_stream_id)
return PaginationChunk(
chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
)
return self.runInteraction(
"get_recent_references_for_event", _get_recent_references_for_event_txn
)
@cached(tree=True)
def get_aggregation_groups_for_event(
self,
event_id,
event_type=None,
limit=5,
direction="b",
from_token=None,
to_token=None,
):
"""Get a list of annotations on the event, grouped by event type and
aggregation key, sorted by count.
This is used e.g. to get the what and how many reactions have happend
on an event.
Args:
event_id (str): Fetch events that relate to this event ID.
event_type (str|None): Only fetch events with this event type, if
given.
limit (int): Only fetch the `limit` groups.
direction (str): Whether to fetch the highest count first (`"b"`) or
the lowest count first (`"f"`).
from_token (AggregationPaginationToken|None): Fetch rows from the
given token, or from the start if None.
to_token (AggregationPaginationToken|None): Fetch rows up to the
given token, or up to the end if None.
Returns:
Deferred[PaginationChunk]: List of groups of annotations that
match. Each row is a dict with `type`, `key` and `count` fields.
"""
where_clause = ["relates_to_id = ?", "relation_type = ?"]
where_args = [event_id, RelationTypes.ANNOTATION]
if event_type:
where_clause.append("type = ?")
where_args.append(event_type)
having_clause = generate_pagination_where_clause(
direction=direction,
column_names=("COUNT(*)", "MAX(stream_ordering)"),
from_token=attr.astuple(from_token) if from_token else None,
to_token=attr.astuple(to_token) if to_token else None,
engine=self.database_engine,
)
if direction == "b":
order = "DESC"
else:
order = "ASC"
if having_clause:
having_clause = "HAVING " + having_clause
else:
having_clause = ""
sql = """
SELECT type, aggregation_key, COUNT(*), MAX(stream_ordering)
FROM event_relations
INNER JOIN events USING (event_id)
WHERE {where_clause}
GROUP BY relation_type, type, aggregation_key
{having_clause}
ORDER BY COUNT(*) {order}, MAX(stream_ordering) {order}
LIMIT ?
""".format(
where_clause=" AND ".join(where_clause),
order=order,
having_clause=having_clause,
)
def _get_aggregation_groups_for_event_txn(txn):
txn.execute(sql, where_args + [limit + 1])
next_batch = None
events = []
for row in txn:
events.append({"type": row[0], "key": row[1], "count": row[2]})
next_batch = AggregationPaginationToken(row[2], row[3])
if len(events) <= limit:
next_batch = None
return PaginationChunk(
chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
)
return self.runInteraction(
"get_aggregation_groups_for_event", _get_aggregation_groups_for_event_txn
)
@cachedInlineCallbacks()
def get_applicable_edit(self, event_id):
"""Get the most recent edit (if any) that has happened for the given
event.
Correctly handles checking whether edits were allowed to happen.
Args:
event_id (str): The original event ID
Returns:
Deferred[EventBase|None]: Returns the most recent edit, if any.
"""
# We only allow edits for `m.room.message` events that have the same sender
# and event type. We can't assert these things during regular event auth so
# we have to do the checks post hoc.
# Fetches latest edit that has the same type and sender as the
# original, and is an `m.room.message`.
sql = """
SELECT edit.event_id FROM events AS edit
INNER JOIN event_relations USING (event_id)
INNER JOIN events AS original ON
original.event_id = relates_to_id
AND edit.type = original.type
AND edit.sender = original.sender
WHERE
relates_to_id = ?
AND relation_type = ?
AND edit.type = 'm.room.message'
ORDER by edit.origin_server_ts DESC, edit.event_id DESC
LIMIT 1
"""
def _get_applicable_edit_txn(txn):
txn.execute(
sql, (event_id, RelationTypes.REPLACES,)
)
row = txn.fetchone()
if row:
return row[0]
edit_id = yield self.runInteraction(
"get_applicable_edit", _get_applicable_edit_txn
)
if not edit_id:
return
edit_event = yield self.get_event(edit_id, allow_none=True)
defer.returnValue(edit_event)
class RelationsStore(RelationsWorkerStore):
def _handle_event_relations(self, txn, event):
"""Handles inserting relation data during peristence of events
Args:
txn
event (EventBase)
"""
relation = event.content.get("m.relates_to")
if not relation:
# No relations
return
rel_type = relation.get("rel_type")
if rel_type not in (
RelationTypes.ANNOTATION,
RelationTypes.REFERENCES,
RelationTypes.REPLACES,
):
# Unknown relation type
return
parent_id = relation.get("event_id")
if not parent_id:
# Invalid relation
return
aggregation_key = relation.get("key")
self._simple_insert_txn(
txn,
table="event_relations",
values={
"event_id": event.event_id,
"relates_to_id": parent_id,
"relation_type": rel_type,
"aggregation_key": aggregation_key,
},
)
txn.call_after(self.get_relations_for_event.invalidate_many, (parent_id,))
txn.call_after(
self.get_aggregation_groups_for_event.invalidate_many, (parent_id,)
)
if rel_type == RelationTypes.REPLACES:
txn.call_after(self.get_applicable_edit.invalidate, (parent_id,))
def _handle_redaction(self, txn, redacted_event_id):
"""Handles receiving a redaction and checking whether we need to remove
any redacted relations from the database.
Args:
txn
redacted_event_id (str): The event that was redacted.
"""
self._simple_delete_txn(
txn,
table="event_relations",
keyvalues={
"event_id": redacted_event_id,
}
)

27
synapse/storage/schema/delta/54/relations.sql Normal file
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@ -0,0 +1,27 @@
/* Copyright 2019 New Vector Ltd
*
* 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.
*/
-- Tracks related events, like reactions, replies, edits, etc. Note that things
-- in this table are not necessarily "valid", e.g. it may contain edits from
-- people who don't have power to edit other peoples events.
CREATE TABLE IF NOT EXISTS event_relations (
event_id TEXT NOT NULL,
relates_to_id TEXT NOT NULL,
relation_type TEXT NOT NULL,
aggregation_key TEXT
);
CREATE UNIQUE INDEX event_relations_id ON event_relations(event_id);
CREATE INDEX event_relations_relates ON event_relations(relates_to_id, relation_type, aggregation_key);

539
tests/rest/client/v2_alpha/test_relations.py Normal file
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@ -0,0 +1,539 @@
# -*- coding: utf-8 -*-
# Copyright 2019 New Vector Ltd
#
# 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.
import itertools
import json
import six
from synapse.api.constants import EventTypes, RelationTypes
from synapse.rest import admin
from synapse.rest.client.v1 import login, room
from synapse.rest.client.v2_alpha import register, relations
from tests import unittest
class RelationsTestCase(unittest.HomeserverTestCase):
servlets = [
relations.register_servlets,
room.register_servlets,
login.register_servlets,
register.register_servlets,
admin.register_servlets_for_client_rest_resource,
]
hijack_auth = False
def make_homeserver(self, reactor, clock):
# We need to enable msc1849 support for aggregations
config = self.default_config()
config["experimental_msc1849_support_enabled"] = True
return self.setup_test_homeserver(config=config)
def prepare(self, reactor, clock, hs):
self.user_id, self.user_token = self._create_user("alice")
self.user2_id, self.user2_token = self._create_user("bob")
self.room = self.helper.create_room_as(self.user_id, tok=self.user_token)
self.helper.join(self.room, user=self.user2_id, tok=self.user2_token)
res = self.helper.send(self.room, body="Hi!", tok=self.user_token)
self.parent_id = res["event_id"]
def test_send_relation(self):
"""Tests that sending a relation using the new /send_relation works
creates the right shape of event.
"""
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", key=u"👍")
self.assertEquals(200, channel.code, channel.json_body)
event_id = channel.json_body["event_id"]
request, channel = self.make_request(
"GET",
"/rooms/%s/event/%s" % (self.room, event_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assert_dict(
{
"type": "m.reaction",
"sender": self.user_id,
"content": {
"m.relates_to": {
"event_id": self.parent_id,
"key": u"👍",
"rel_type": RelationTypes.ANNOTATION,
}
},
},
channel.json_body,
)
def test_deny_membership(self):
"""Test that we deny relations on membership events
"""
channel = self._send_relation(RelationTypes.ANNOTATION, EventTypes.Member)
self.assertEquals(400, channel.code, channel.json_body)
def test_basic_paginate_relations(self):
"""Tests that calling pagination API corectly the latest relations.
"""
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
self.assertEquals(200, channel.code, channel.json_body)
annotation_id = channel.json_body["event_id"]
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/relations/%s?limit=1"
% (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
# We expect to get back a single pagination result, which is the full
# relation event we sent above.
self.assertEquals(len(channel.json_body["chunk"]), 1, channel.json_body)
self.assert_dict(
{"event_id": annotation_id, "sender": self.user_id, "type": "m.reaction"},
channel.json_body["chunk"][0],
)
# Make sure next_batch has something in it that looks like it could be a
# valid token.
self.assertIsInstance(
channel.json_body.get("next_batch"), six.string_types, channel.json_body
)
def test_repeated_paginate_relations(self):
"""Test that if we paginate using a limit and tokens then we get the
expected events.
"""
expected_event_ids = []
for _ in range(10):
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction")
self.assertEquals(200, channel.code, channel.json_body)
expected_event_ids.append(channel.json_body["event_id"])
prev_token = None
found_event_ids = []
for _ in range(20):
from_token = ""
if prev_token:
from_token = "&from=" + prev_token
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/relations/%s?limit=1%s"
% (self.room, self.parent_id, from_token),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
found_event_ids.extend(e["event_id"] for e in channel.json_body["chunk"])
next_batch = channel.json_body.get("next_batch")
self.assertNotEquals(prev_token, next_batch)
prev_token = next_batch
if not prev_token:
break
# We paginated backwards, so reverse
found_event_ids.reverse()
self.assertEquals(found_event_ids, expected_event_ids)
def test_aggregation_pagination_groups(self):
"""Test that we can paginate annotation groups correctly.
"""
# We need to create ten separate users to send each reaction.
access_tokens = [self.user_token, self.user2_token]
idx = 0
while len(access_tokens) < 10:
user_id, token = self._create_user("test" + str(idx))
idx += 1
self.helper.join(self.room, user=user_id, tok=token)
access_tokens.append(token)
idx = 0
sent_groups = {u"👍": 10, u"a": 7, u"b": 5, u"c": 3, u"d": 2, u"e": 1}
for key in itertools.chain.from_iterable(
itertools.repeat(key, num) for key, num in sent_groups.items()
):
channel = self._send_relation(
RelationTypes.ANNOTATION,
"m.reaction",
key=key,
access_token=access_tokens[idx],
)
self.assertEquals(200, channel.code, channel.json_body)
idx += 1
idx %= len(access_tokens)
prev_token = None
found_groups = {}
for _ in range(20):
from_token = ""
if prev_token:
from_token = "&from=" + prev_token
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/aggregations/%s?limit=1%s"
% (self.room, self.parent_id, from_token),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEqual(len(channel.json_body["chunk"]), 1, channel.json_body)
for groups in channel.json_body["chunk"]:
# We only expect reactions
self.assertEqual(groups["type"], "m.reaction", channel.json_body)
# We should only see each key once
self.assertNotIn(groups["key"], found_groups, channel.json_body)
found_groups[groups["key"]] = groups["count"]
next_batch = channel.json_body.get("next_batch")
self.assertNotEquals(prev_token, next_batch)
prev_token = next_batch
if not prev_token:
break
self.assertEquals(sent_groups, found_groups)
def test_aggregation_pagination_within_group(self):
"""Test that we can paginate within an annotation group.
"""
expected_event_ids = []
for _ in range(10):
channel = self._send_relation(
RelationTypes.ANNOTATION, "m.reaction", key=u"👍"
)
self.assertEquals(200, channel.code, channel.json_body)
expected_event_ids.append(channel.json_body["event_id"])
# Also send a different type of reaction so that we test we don't see it
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", key="a")
self.assertEquals(200, channel.code, channel.json_body)
prev_token = None
found_event_ids = []
encoded_key = six.moves.urllib.parse.quote_plus(u"👍".encode("utf-8"))
for _ in range(20):
from_token = ""
if prev_token:
from_token = "&from=" + prev_token
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s"
"/aggregations/%s/%s/m.reaction/%s?limit=1%s"
% (
self.room,
self.parent_id,
RelationTypes.ANNOTATION,
encoded_key,
from_token,
),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEqual(len(channel.json_body["chunk"]), 1, channel.json_body)
found_event_ids.extend(e["event_id"] for e in channel.json_body["chunk"])
next_batch = channel.json_body.get("next_batch")
self.assertNotEquals(prev_token, next_batch)
prev_token = next_batch
if not prev_token:
break
# We paginated backwards, so reverse
found_event_ids.reverse()
self.assertEquals(found_event_ids, expected_event_ids)
def test_aggregation(self):
"""Test that annotations get correctly aggregated.
"""
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(
RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
)
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "b")
self.assertEquals(200, channel.code, channel.json_body)
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/aggregations/%s"
% (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEquals(
channel.json_body,
{
"chunk": [
{"type": "m.reaction", "key": "a", "count": 2},
{"type": "m.reaction", "key": "b", "count": 1},
]
},
)
def test_aggregation_redactions(self):
"""Test that annotations get correctly aggregated after a redaction.
"""
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
self.assertEquals(200, channel.code, channel.json_body)
to_redact_event_id = channel.json_body["event_id"]
channel = self._send_relation(
RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
)
self.assertEquals(200, channel.code, channel.json_body)
# Now lets redact one of the 'a' reactions
request, channel = self.make_request(
"POST",
"/_matrix/client/r0/rooms/%s/redact/%s" % (self.room, to_redact_event_id),
access_token=self.user_token,
content={},
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/aggregations/%s"
% (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEquals(
channel.json_body,
{"chunk": [{"type": "m.reaction", "key": "a", "count": 1}]},
)
def test_aggregation_must_be_annotation(self):
"""Test that aggregations must be annotations.
"""
request, channel = self.make_request(
"GET",
"/_matrix/client/unstable/rooms/%s/aggregations/%s/m.replace?limit=1"
% (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(400, channel.code, channel.json_body)
def test_aggregation_get_event(self):
"""Test that annotations and references get correctly bundled when
getting the parent event.
"""
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "a")
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(
RelationTypes.ANNOTATION, "m.reaction", "a", access_token=self.user2_token
)
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(RelationTypes.ANNOTATION, "m.reaction", "b")
self.assertEquals(200, channel.code, channel.json_body)
channel = self._send_relation(RelationTypes.REFERENCES, "m.room.test")
self.assertEquals(200, channel.code, channel.json_body)
reply_1 = channel.json_body["event_id"]
channel = self._send_relation(RelationTypes.REFERENCES, "m.room.test")
self.assertEquals(200, channel.code, channel.json_body)
reply_2 = channel.json_body["event_id"]
request, channel = self.make_request(
"GET",
"/rooms/%s/event/%s" % (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEquals(
channel.json_body["unsigned"].get("m.relations"),
{
RelationTypes.ANNOTATION: {
"chunk": [
{"type": "m.reaction", "key": "a", "count": 2},
{"type": "m.reaction", "key": "b", "count": 1},
]
},
RelationTypes.REFERENCES: {
"chunk": [{"event_id": reply_1}, {"event_id": reply_2}]
},
},
)
def test_edit(self):
"""Test that a simple edit works.
"""
new_body = {"msgtype": "m.text", "body": "I've been edited!"}
channel = self._send_relation(
RelationTypes.REPLACES,
"m.room.message",
content={"msgtype": "m.text", "body": "foo", "m.new_content": new_body},
)
self.assertEquals(200, channel.code, channel.json_body)
edit_event_id = channel.json_body["event_id"]
request, channel = self.make_request(
"GET",
"/rooms/%s/event/%s" % (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEquals(channel.json_body["content"], new_body)
self.assertEquals(
channel.json_body["unsigned"].get("m.relations"),
{RelationTypes.REPLACES: {"event_id": edit_event_id}},
)
def test_multi_edit(self):
"""Test that multiple edits, including attempts by people who
shouldn't be allowed, are correctly handled.
"""
channel = self._send_relation(
RelationTypes.REPLACES,
"m.room.message",
content={
"msgtype": "m.text",
"body": "Wibble",
"m.new_content": {"msgtype": "m.text", "body": "First edit"},
},
)
self.assertEquals(200, channel.code, channel.json_body)
new_body = {"msgtype": "m.text", "body": "I've been edited!"}
channel = self._send_relation(
RelationTypes.REPLACES,
"m.room.message",
content={"msgtype": "m.text", "body": "foo", "m.new_content": new_body},
)
self.assertEquals(200, channel.code, channel.json_body)
edit_event_id = channel.json_body["event_id"]
channel = self._send_relation(
RelationTypes.REPLACES,
"m.room.message.WRONG_TYPE",
content={
"msgtype": "m.text",
"body": "Wibble",
"m.new_content": {"msgtype": "m.text", "body": "Edit, but wrong type"},
},
)
self.assertEquals(200, channel.code, channel.json_body)
request, channel = self.make_request(
"GET",
"/rooms/%s/event/%s" % (self.room, self.parent_id),
access_token=self.user_token,
)
self.render(request)
self.assertEquals(200, channel.code, channel.json_body)
self.assertEquals(channel.json_body["content"], new_body)
self.assertEquals(
channel.json_body["unsigned"].get("m.relations"),
{RelationTypes.REPLACES: {"event_id": edit_event_id}},
)
def _send_relation(
self, relation_type, event_type, key=None, content={}, access_token=None
):
"""Helper function to send a relation pointing at `self.parent_id`
Args:
relation_type (str): One of `RelationTypes`
event_type (str): The type of the event to create
key (str|None): The aggregation key used for m.annotation relation
type.
content(dict|None): The content of the created event.
access_token (str|None): The access token used to send the relation,
defaults to `self.user_token`
Returns:
FakeChannel
"""
if not access_token:
access_token = self.user_token
query = ""
if key:
query = "?key=" + six.moves.urllib.parse.quote_plus(key.encode("utf-8"))
request, channel = self.make_request(
"POST",
"/_matrix/client/unstable/rooms/%s/send_relation/%s/%s/%s%s"
% (self.room, self.parent_id, relation_type, event_type, query),
json.dumps(content).encode("utf-8"),
access_token=access_token,
)
self.render(request)
return channel
def _create_user(self, localpart):
user_id = self.register_user(localpart, "abc123")
access_token = self.login(localpart, "abc123")
return user_id, access_token