655 lines
20 KiB
Python
655 lines
20 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2018 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
|
|
from typing import List
|
|
|
|
import attr
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.constants import EventTypes, JoinRules, Membership
|
|
from synapse.api.room_versions import RoomVersions
|
|
from synapse.event_auth import auth_types_for_event
|
|
from synapse.events import make_event_from_dict
|
|
from synapse.state.v2 import lexicographical_topological_sort, resolve_events_with_store
|
|
from synapse.types import EventID
|
|
|
|
from tests import unittest
|
|
|
|
ALICE = "@alice:example.com"
|
|
BOB = "@bob:example.com"
|
|
CHARLIE = "@charlie:example.com"
|
|
EVELYN = "@evelyn:example.com"
|
|
ZARA = "@zara:example.com"
|
|
|
|
ROOM_ID = "!test:example.com"
|
|
|
|
MEMBERSHIP_CONTENT_JOIN = {"membership": Membership.JOIN}
|
|
MEMBERSHIP_CONTENT_BAN = {"membership": Membership.BAN}
|
|
|
|
|
|
ORIGIN_SERVER_TS = 0
|
|
|
|
|
|
class FakeClock:
|
|
def sleep(self, msec):
|
|
return defer.succeed(None)
|
|
|
|
|
|
class FakeEvent(object):
|
|
"""A fake event we use as a convenience.
|
|
|
|
NOTE: Again as a convenience we use "node_ids" rather than event_ids to
|
|
refer to events. The event_id has node_id as localpart and example.com
|
|
as domain.
|
|
"""
|
|
|
|
def __init__(self, id, sender, type, state_key, content):
|
|
self.node_id = id
|
|
self.event_id = EventID(id, "example.com").to_string()
|
|
self.sender = sender
|
|
self.type = type
|
|
self.state_key = state_key
|
|
self.content = content
|
|
self.room_id = ROOM_ID
|
|
|
|
def to_event(self, auth_events, prev_events):
|
|
"""Given the auth_events and prev_events, convert to a Frozen Event
|
|
|
|
Args:
|
|
auth_events (list[str]): list of event_ids
|
|
prev_events (list[str]): list of event_ids
|
|
|
|
Returns:
|
|
FrozenEvent
|
|
"""
|
|
global ORIGIN_SERVER_TS
|
|
|
|
ts = ORIGIN_SERVER_TS
|
|
ORIGIN_SERVER_TS = ORIGIN_SERVER_TS + 1
|
|
|
|
event_dict = {
|
|
"auth_events": [(a, {}) for a in auth_events],
|
|
"prev_events": [(p, {}) for p in prev_events],
|
|
"event_id": self.node_id,
|
|
"sender": self.sender,
|
|
"type": self.type,
|
|
"content": self.content,
|
|
"origin_server_ts": ts,
|
|
"room_id": ROOM_ID,
|
|
}
|
|
|
|
if self.state_key is not None:
|
|
event_dict["state_key"] = self.state_key
|
|
|
|
return make_event_from_dict(event_dict)
|
|
|
|
|
|
# All graphs start with this set of events
|
|
INITIAL_EVENTS = [
|
|
FakeEvent(
|
|
id="CREATE",
|
|
sender=ALICE,
|
|
type=EventTypes.Create,
|
|
state_key="",
|
|
content={"creator": ALICE},
|
|
),
|
|
FakeEvent(
|
|
id="IMA",
|
|
sender=ALICE,
|
|
type=EventTypes.Member,
|
|
state_key=ALICE,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
),
|
|
FakeEvent(
|
|
id="IPOWER",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100}},
|
|
),
|
|
FakeEvent(
|
|
id="IJR",
|
|
sender=ALICE,
|
|
type=EventTypes.JoinRules,
|
|
state_key="",
|
|
content={"join_rule": JoinRules.PUBLIC},
|
|
),
|
|
FakeEvent(
|
|
id="IMB",
|
|
sender=BOB,
|
|
type=EventTypes.Member,
|
|
state_key=BOB,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
),
|
|
FakeEvent(
|
|
id="IMC",
|
|
sender=CHARLIE,
|
|
type=EventTypes.Member,
|
|
state_key=CHARLIE,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
),
|
|
FakeEvent(
|
|
id="IMZ",
|
|
sender=ZARA,
|
|
type=EventTypes.Member,
|
|
state_key=ZARA,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
),
|
|
FakeEvent(
|
|
id="START", sender=ZARA, type=EventTypes.Message, state_key=None, content={}
|
|
),
|
|
FakeEvent(
|
|
id="END", sender=ZARA, type=EventTypes.Message, state_key=None, content={}
|
|
),
|
|
]
|
|
|
|
INITIAL_EDGES = ["START", "IMZ", "IMC", "IMB", "IJR", "IPOWER", "IMA", "CREATE"]
|
|
|
|
|
|
class StateTestCase(unittest.TestCase):
|
|
def test_ban_vs_pl(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="PA",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="MA",
|
|
sender=ALICE,
|
|
type=EventTypes.Member,
|
|
state_key=ALICE,
|
|
content={"membership": Membership.JOIN},
|
|
),
|
|
FakeEvent(
|
|
id="MB",
|
|
sender=ALICE,
|
|
type=EventTypes.Member,
|
|
state_key=BOB,
|
|
content={"membership": Membership.BAN},
|
|
),
|
|
FakeEvent(
|
|
id="PB",
|
|
sender=BOB,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
]
|
|
|
|
edges = [["END", "MB", "MA", "PA", "START"], ["END", "PB", "PA"]]
|
|
|
|
expected_state_ids = ["PA", "MA", "MB"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def test_join_rule_evasion(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="JR",
|
|
sender=ALICE,
|
|
type=EventTypes.JoinRules,
|
|
state_key="",
|
|
content={"join_rules": JoinRules.PRIVATE},
|
|
),
|
|
FakeEvent(
|
|
id="ME",
|
|
sender=EVELYN,
|
|
type=EventTypes.Member,
|
|
state_key=EVELYN,
|
|
content={"membership": Membership.JOIN},
|
|
),
|
|
]
|
|
|
|
edges = [["END", "JR", "START"], ["END", "ME", "START"]]
|
|
|
|
expected_state_ids = ["JR"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def test_offtopic_pl(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="PA",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="PB",
|
|
sender=BOB,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50, CHARLIE: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="PC",
|
|
sender=CHARLIE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50, CHARLIE: 0}},
|
|
),
|
|
]
|
|
|
|
edges = [["END", "PC", "PB", "PA", "START"], ["END", "PA"]]
|
|
|
|
expected_state_ids = ["PC"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def test_topic_basic(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="PA1",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="T2", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="PA2",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 0}},
|
|
),
|
|
FakeEvent(
|
|
id="PB",
|
|
sender=BOB,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="T3", sender=BOB, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
]
|
|
|
|
edges = [["END", "PA2", "T2", "PA1", "T1", "START"], ["END", "T3", "PB", "PA1"]]
|
|
|
|
expected_state_ids = ["PA2", "T2"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def test_topic_reset(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="PA",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="T2", sender=BOB, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="MB",
|
|
sender=ALICE,
|
|
type=EventTypes.Member,
|
|
state_key=BOB,
|
|
content={"membership": Membership.BAN},
|
|
),
|
|
]
|
|
|
|
edges = [["END", "MB", "T2", "PA", "T1", "START"], ["END", "T1"]]
|
|
|
|
expected_state_ids = ["T1", "MB", "PA"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def test_topic(self):
|
|
events = [
|
|
FakeEvent(
|
|
id="T1", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="PA1",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="T2", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="PA2",
|
|
sender=ALICE,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 0}},
|
|
),
|
|
FakeEvent(
|
|
id="PB",
|
|
sender=BOB,
|
|
type=EventTypes.PowerLevels,
|
|
state_key="",
|
|
content={"users": {ALICE: 100, BOB: 50}},
|
|
),
|
|
FakeEvent(
|
|
id="T3", sender=BOB, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
FakeEvent(
|
|
id="MZ1",
|
|
sender=ZARA,
|
|
type=EventTypes.Message,
|
|
state_key=None,
|
|
content={},
|
|
),
|
|
FakeEvent(
|
|
id="T4", sender=ALICE, type=EventTypes.Topic, state_key="", content={}
|
|
),
|
|
]
|
|
|
|
edges = [
|
|
["END", "T4", "MZ1", "PA2", "T2", "PA1", "T1", "START"],
|
|
["END", "MZ1", "T3", "PB", "PA1"],
|
|
]
|
|
|
|
expected_state_ids = ["T4", "PA2"]
|
|
|
|
self.do_check(events, edges, expected_state_ids)
|
|
|
|
def do_check(self, events, edges, expected_state_ids):
|
|
"""Take a list of events and edges and calculate the state of the
|
|
graph at END, and asserts it matches `expected_state_ids`
|
|
|
|
Args:
|
|
events (list[FakeEvent])
|
|
edges (list[list[str]]): A list of chains of event edges, e.g.
|
|
`[[A, B, C]]` are edges A->B and B->C.
|
|
expected_state_ids (list[str]): The expected state at END, (excluding
|
|
the keys that haven't changed since START).
|
|
"""
|
|
# We want to sort the events into topological order for processing.
|
|
graph = {}
|
|
|
|
# node_id -> FakeEvent
|
|
fake_event_map = {}
|
|
|
|
for ev in itertools.chain(INITIAL_EVENTS, events):
|
|
graph[ev.node_id] = set()
|
|
fake_event_map[ev.node_id] = ev
|
|
|
|
for a, b in pairwise(INITIAL_EDGES):
|
|
graph[a].add(b)
|
|
|
|
for edge_list in edges:
|
|
for a, b in pairwise(edge_list):
|
|
graph[a].add(b)
|
|
|
|
# event_id -> FrozenEvent
|
|
event_map = {}
|
|
# node_id -> state
|
|
state_at_event = {}
|
|
|
|
# We copy the map as the sort consumes the graph
|
|
graph_copy = {k: set(v) for k, v in graph.items()}
|
|
|
|
for node_id in lexicographical_topological_sort(graph_copy, key=lambda e: e):
|
|
fake_event = fake_event_map[node_id]
|
|
event_id = fake_event.event_id
|
|
|
|
prev_events = list(graph[node_id])
|
|
|
|
if len(prev_events) == 0:
|
|
state_before = {}
|
|
elif len(prev_events) == 1:
|
|
state_before = dict(state_at_event[prev_events[0]])
|
|
else:
|
|
state_d = resolve_events_with_store(
|
|
FakeClock(),
|
|
ROOM_ID,
|
|
RoomVersions.V2.identifier,
|
|
[state_at_event[n] for n in prev_events],
|
|
event_map=event_map,
|
|
state_res_store=TestStateResolutionStore(event_map),
|
|
)
|
|
|
|
state_before = self.successResultOf(defer.ensureDeferred(state_d))
|
|
|
|
state_after = dict(state_before)
|
|
if fake_event.state_key is not None:
|
|
state_after[(fake_event.type, fake_event.state_key)] = event_id
|
|
|
|
auth_types = set(auth_types_for_event(fake_event))
|
|
|
|
auth_events = []
|
|
for key in auth_types:
|
|
if key in state_before:
|
|
auth_events.append(state_before[key])
|
|
|
|
event = fake_event.to_event(auth_events, prev_events)
|
|
|
|
state_at_event[node_id] = state_after
|
|
event_map[event_id] = event
|
|
|
|
expected_state = {}
|
|
for node_id in expected_state_ids:
|
|
# expected_state_ids are node IDs rather than event IDs,
|
|
# so we have to convert
|
|
event_id = EventID(node_id, "example.com").to_string()
|
|
event = event_map[event_id]
|
|
|
|
key = (event.type, event.state_key)
|
|
|
|
expected_state[key] = event_id
|
|
|
|
start_state = state_at_event["START"]
|
|
end_state = {
|
|
key: value
|
|
for key, value in state_at_event["END"].items()
|
|
if key in expected_state or start_state.get(key) != value
|
|
}
|
|
|
|
self.assertEqual(expected_state, end_state)
|
|
|
|
|
|
class LexicographicalTestCase(unittest.TestCase):
|
|
def test_simple(self):
|
|
graph = {"l": {"o"}, "m": {"n", "o"}, "n": {"o"}, "o": set(), "p": {"o"}}
|
|
|
|
res = list(lexicographical_topological_sort(graph, key=lambda x: x))
|
|
|
|
self.assertEqual(["o", "l", "n", "m", "p"], res)
|
|
|
|
|
|
class SimpleParamStateTestCase(unittest.TestCase):
|
|
def setUp(self):
|
|
# We build up a simple DAG.
|
|
|
|
event_map = {}
|
|
|
|
create_event = FakeEvent(
|
|
id="CREATE",
|
|
sender=ALICE,
|
|
type=EventTypes.Create,
|
|
state_key="",
|
|
content={"creator": ALICE},
|
|
).to_event([], [])
|
|
event_map[create_event.event_id] = create_event
|
|
|
|
alice_member = FakeEvent(
|
|
id="IMA",
|
|
sender=ALICE,
|
|
type=EventTypes.Member,
|
|
state_key=ALICE,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
).to_event([create_event.event_id], [create_event.event_id])
|
|
event_map[alice_member.event_id] = alice_member
|
|
|
|
join_rules = FakeEvent(
|
|
id="IJR",
|
|
sender=ALICE,
|
|
type=EventTypes.JoinRules,
|
|
state_key="",
|
|
content={"join_rule": JoinRules.PUBLIC},
|
|
).to_event(
|
|
auth_events=[create_event.event_id, alice_member.event_id],
|
|
prev_events=[alice_member.event_id],
|
|
)
|
|
event_map[join_rules.event_id] = join_rules
|
|
|
|
# Bob and Charlie join at the same time, so there is a fork
|
|
bob_member = FakeEvent(
|
|
id="IMB",
|
|
sender=BOB,
|
|
type=EventTypes.Member,
|
|
state_key=BOB,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
).to_event(
|
|
auth_events=[create_event.event_id, join_rules.event_id],
|
|
prev_events=[join_rules.event_id],
|
|
)
|
|
event_map[bob_member.event_id] = bob_member
|
|
|
|
charlie_member = FakeEvent(
|
|
id="IMC",
|
|
sender=CHARLIE,
|
|
type=EventTypes.Member,
|
|
state_key=CHARLIE,
|
|
content=MEMBERSHIP_CONTENT_JOIN,
|
|
).to_event(
|
|
auth_events=[create_event.event_id, join_rules.event_id],
|
|
prev_events=[join_rules.event_id],
|
|
)
|
|
event_map[charlie_member.event_id] = charlie_member
|
|
|
|
self.event_map = event_map
|
|
self.create_event = create_event
|
|
self.alice_member = alice_member
|
|
self.join_rules = join_rules
|
|
self.bob_member = bob_member
|
|
self.charlie_member = charlie_member
|
|
|
|
self.state_at_bob = {
|
|
(e.type, e.state_key): e.event_id
|
|
for e in [create_event, alice_member, join_rules, bob_member]
|
|
}
|
|
|
|
self.state_at_charlie = {
|
|
(e.type, e.state_key): e.event_id
|
|
for e in [create_event, alice_member, join_rules, charlie_member]
|
|
}
|
|
|
|
self.expected_combined_state = {
|
|
(e.type, e.state_key): e.event_id
|
|
for e in [
|
|
create_event,
|
|
alice_member,
|
|
join_rules,
|
|
bob_member,
|
|
charlie_member,
|
|
]
|
|
}
|
|
|
|
def test_event_map_none(self):
|
|
# Test that we correctly handle passing `None` as the event_map
|
|
|
|
state_d = resolve_events_with_store(
|
|
FakeClock(),
|
|
ROOM_ID,
|
|
RoomVersions.V2.identifier,
|
|
[self.state_at_bob, self.state_at_charlie],
|
|
event_map=None,
|
|
state_res_store=TestStateResolutionStore(self.event_map),
|
|
)
|
|
|
|
state = self.successResultOf(defer.ensureDeferred(state_d))
|
|
|
|
self.assert_dict(self.expected_combined_state, state)
|
|
|
|
|
|
def pairwise(iterable):
|
|
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
|
|
a, b = itertools.tee(iterable)
|
|
next(b, None)
|
|
return zip(a, b)
|
|
|
|
|
|
@attr.s
|
|
class TestStateResolutionStore(object):
|
|
event_map = attr.ib()
|
|
|
|
def get_events(self, event_ids, allow_rejected=False):
|
|
"""Get events from the database
|
|
|
|
Args:
|
|
event_ids (list): The event_ids of the events to fetch
|
|
allow_rejected (bool): If True return rejected events.
|
|
|
|
Returns:
|
|
Deferred[dict[str, FrozenEvent]]: Dict from event_id to event.
|
|
"""
|
|
|
|
return defer.succeed(
|
|
{eid: self.event_map[eid] for eid in event_ids if eid in self.event_map}
|
|
)
|
|
|
|
def _get_auth_chain(self, event_ids: List[str]) -> List[str]:
|
|
"""Gets the full auth chain for a set of events (including rejected
|
|
events).
|
|
|
|
Includes the given event IDs in the result.
|
|
|
|
Note that:
|
|
1. All events must be state events.
|
|
2. For v1 rooms this may not have the full auth chain in the
|
|
presence of rejected events
|
|
|
|
Args:
|
|
event_ids: The event IDs of the events to fetch the auth
|
|
chain for. Must be state events.
|
|
Returns:
|
|
List of event IDs of the auth chain.
|
|
"""
|
|
|
|
# Simple DFS for auth chain
|
|
result = set()
|
|
stack = list(event_ids)
|
|
while stack:
|
|
event_id = stack.pop()
|
|
if event_id in result:
|
|
continue
|
|
|
|
result.add(event_id)
|
|
|
|
event = self.event_map[event_id]
|
|
for aid in event.auth_event_ids():
|
|
stack.append(aid)
|
|
|
|
return list(result)
|
|
|
|
def get_auth_chain_difference(self, auth_sets):
|
|
chains = [frozenset(self._get_auth_chain(a)) for a in auth_sets]
|
|
|
|
common = set(chains[0]).intersection(*chains[1:])
|
|
return defer.succeed(set(chains[0]).union(*chains[1:]) - common)
|