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synapse/tests/test_state.py

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#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from typing import (
Any,
Collection,
Dict,
Generator,
Iterable,
Iterator,
List,
Optional,
Set,
Tuple,
cast,
)
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from unittest.mock import Mock
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from twisted.internet import defer
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from synapse.api.auth.internal import InternalAuth
from synapse.api.constants import EventTypes, Membership
from synapse.api.room_versions import RoomVersions
from synapse.events import EventBase, make_event_from_dict
from synapse.events.snapshot import EventContext
from synapse.state import StateHandler, StateResolutionHandler, _make_state_cache_entry
from synapse.types import MutableStateMap, StateMap
from synapse.types.state import StateFilter
from synapse.util import Clock
from synapse.util.macaroons import MacaroonGenerator
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from tests import unittest
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from .utils import MockClock, default_config
_next_event_id = 1000
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def create_event(
name: Optional[str] = None,
type: Optional[str] = None,
state_key: Optional[str] = None,
depth: int = 2,
event_id: Optional[str] = None,
prev_events: Optional[List[Tuple[str, dict]]] = None,
**kwargs: Any,
) -> EventBase:
global _next_event_id
if not event_id:
_next_event_id += 1
event_id = "$%s:test" % (_next_event_id,)
if not name:
if state_key is not None:
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name = "<%s-%s, %s>" % (type, state_key, event_id)
else:
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name = "<%s, %s>" % (type, event_id)
d = {
"event_id": event_id,
"type": type,
"sender": "@user_id:example.com",
"room_id": "!room_id:example.com",
"depth": depth,
"prev_events": prev_events or [],
}
if state_key is not None:
d["state_key"] = state_key
d.update(kwargs)
return make_event_from_dict(d)
class _DummyStore:
def __init__(self) -> None:
self._event_to_state_group: Dict[str, int] = {}
self._group_to_state: Dict[int, MutableStateMap[str]] = {}
self._event_id_to_event: Dict[str, EventBase] = {}
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self._next_group = 1
async def get_state_groups_ids(
self, room_id: str, event_ids: Collection[str]
) -> Dict[int, MutableStateMap[str]]:
groups = {}
for event_id in event_ids:
group = self._event_to_state_group.get(event_id)
if group:
groups[group] = self._group_to_state[group]
return groups
async def get_state_ids_for_group(
self, state_group: int, state_filter: Optional[StateFilter] = None
) -> MutableStateMap[str]:
return self._group_to_state[state_group]
async def store_state_group(
self,
event_id: str,
room_id: str,
prev_group: Optional[int],
delta_ids: Optional[StateMap[str]],
current_state_ids: Optional[StateMap[str]],
) -> int:
state_group = self._next_group
self._next_group += 1
if current_state_ids is None:
assert prev_group is not None
assert delta_ids is not None
current_state_ids = dict(self._group_to_state[prev_group])
current_state_ids.update(delta_ids)
self._group_to_state[state_group] = dict(current_state_ids)
return state_group
async def get_events(
self, event_ids: Collection[str], **kwargs: Any
) -> Dict[str, EventBase]:
return {
e_id: self._event_id_to_event[e_id]
for e_id in event_ids
if e_id in self._event_id_to_event
}
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async def get_partial_state_events(
self, event_ids: Collection[str]
) -> Dict[str, bool]:
return {e: False for e in event_ids}
async def get_state_group_delta(
self, name: str
) -> Tuple[Optional[int], Optional[StateMap[str]]]:
return None, None
def register_events(self, events: Iterable[EventBase]) -> None:
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for e in events:
self._event_id_to_event[e.event_id] = e
def register_event_context(self, event: EventBase, context: EventContext) -> None:
assert context.state_group is not None
self._event_to_state_group[event.event_id] = context.state_group
def register_event_id_state_group(self, event_id: str, state_group: int) -> None:
self._event_to_state_group[event_id] = state_group
async def get_room_version_id(self, room_id: str) -> str:
return RoomVersions.V1.identifier
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async def get_state_group_for_events(
self, event_ids: Collection[str], await_full_state: bool = True
) -> Dict[str, int]:
res = {}
for event in event_ids:
res[event] = self._event_to_state_group[event]
return res
async def get_state_for_groups(
self, groups: Collection[int]
) -> Dict[int, MutableStateMap[str]]:
res = {}
for group in groups:
state = self._group_to_state[group]
res[group] = state
return res
class DictObj(dict):
def __init__(self, **kwargs: Any) -> None:
super().__init__(kwargs)
self.__dict__ = self
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class Graph:
def __init__(self, nodes: Dict[str, DictObj], edges: Dict[str, List[str]]):
events: Dict[str, EventBase] = {}
clobbered: Set[str] = set()
for event_id, fields in nodes.items():
refs = edges.get(event_id)
if refs:
clobbered.difference_update(refs)
prev_events: List[Tuple[str, dict]] = [(r, {}) for r in refs]
else:
prev_events = []
events[event_id] = create_event(
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event_id=event_id, prev_events=prev_events, **fields
)
self._leaves = clobbered
self._events = sorted(events.values(), key=lambda e: e.depth)
def walk(self) -> Iterator[EventBase]:
return iter(self._events)
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class StateTestCase(unittest.TestCase):
def setUp(self) -> None:
self.dummy_store = _DummyStore()
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storage_controllers = Mock(main=self.dummy_store, state=self.dummy_store)
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hs = Mock(
spec_set=[
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"config",
"get_datastores",
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"get_storage_controllers",
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"get_auth",
"get_state_handler",
"get_clock",
"get_state_resolution_handler",
"get_account_validity_handler",
"get_macaroon_generator",
"get_instance_name",
"get_simple_http_client",
"get_replication_client",
"hostname",
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]
)
clock = cast(Clock, MockClock())
hs.config = default_config("tesths", True)
hs.get_datastores.return_value = Mock(main=self.dummy_store)
hs.get_state_handler.return_value = None
hs.get_clock.return_value = clock
hs.get_macaroon_generator.return_value = MacaroonGenerator(
clock, "tesths", b"verysecret"
)
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hs.get_auth.return_value = InternalAuth(hs)
hs.get_state_resolution_handler = lambda: StateResolutionHandler(hs)
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hs.get_storage_controllers.return_value = storage_controllers
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self.state = StateHandler(hs)
self.event_id = 0
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@defer.inlineCallbacks
def test_branch_no_conflict(self) -> Generator[defer.Deferred, Any, None]:
graph = Graph(
nodes={
"START": DictObj(
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type=EventTypes.Create, state_key="", content={}, depth=1
),
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"A": DictObj(type=EventTypes.Message, depth=2),
"B": DictObj(type=EventTypes.Message, depth=3),
"C": DictObj(type=EventTypes.Name, state_key="", depth=3),
"D": DictObj(type=EventTypes.Message, depth=4),
},
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edges={"A": ["START"], "B": ["A"], "C": ["A"], "D": ["B", "C"]},
)
self.dummy_store.register_events(graph.walk())
context_store: Dict[str, EventContext] = {}
for event in graph.walk():
context = yield defer.ensureDeferred(
self.state.compute_event_context(event)
)
self.dummy_store.register_event_context(event, context)
context_store[event.event_id] = context
ctx_c = context_store["C"]
ctx_d = context_store["D"]
prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(ctx_d.get_prev_state_ids())
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self.assertEqual(2, len(prev_state_ids))
self.assertEqual(ctx_c.state_group, ctx_d.state_group_before_event)
self.assertEqual(ctx_d.state_group_before_event, ctx_d.state_group)
@defer.inlineCallbacks
def test_branch_basic_conflict(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
graph = Graph(
nodes={
"START": DictObj(
type=EventTypes.Create,
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state_key="",
content={"creator": "@user_id:example.com"},
depth=1,
),
"A": DictObj(
type=EventTypes.Member,
state_key="@user_id:example.com",
content={"membership": Membership.JOIN},
membership=Membership.JOIN,
depth=2,
),
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"B": DictObj(type=EventTypes.Name, state_key="", depth=3),
"C": DictObj(type=EventTypes.Name, state_key="", depth=4),
"D": DictObj(type=EventTypes.Message, depth=5),
},
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edges={"A": ["START"], "B": ["A"], "C": ["A"], "D": ["B", "C"]},
)
self.dummy_store.register_events(graph.walk())
context_store: Dict[str, EventContext] = {}
for event in graph.walk():
context = yield defer.ensureDeferred(
self.state.compute_event_context(event)
)
self.dummy_store.register_event_context(event, context)
context_store[event.event_id] = context
# C ends up winning the resolution between B and C
ctx_c = context_store["C"]
ctx_d = context_store["D"]
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prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(ctx_d.get_prev_state_ids())
self.assertSetEqual({"START", "A", "C"}, set(prev_state_ids.values()))
self.assertEqual(ctx_c.state_group, ctx_d.state_group_before_event)
self.assertEqual(ctx_d.state_group_before_event, ctx_d.state_group)
@defer.inlineCallbacks
def test_branch_have_banned_conflict(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
graph = Graph(
nodes={
"START": DictObj(
type=EventTypes.Create,
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state_key="",
content={"creator": "@user_id:example.com"},
depth=1,
),
"A": DictObj(
type=EventTypes.Member,
state_key="@user_id:example.com",
content={"membership": Membership.JOIN},
membership=Membership.JOIN,
depth=2,
),
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"B": DictObj(type=EventTypes.Name, state_key="", depth=3),
"C": DictObj(
type=EventTypes.Member,
state_key="@user_id_2:example.com",
content={"membership": Membership.BAN},
membership=Membership.BAN,
depth=4,
),
"D": DictObj(
type=EventTypes.Name,
state_key="",
depth=4,
sender="@user_id_2:example.com",
),
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"E": DictObj(type=EventTypes.Message, depth=5),
},
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edges={"A": ["START"], "B": ["A"], "C": ["B"], "D": ["B"], "E": ["C", "D"]},
)
self.dummy_store.register_events(graph.walk())
context_store: Dict[str, EventContext] = {}
for event in graph.walk():
context = yield defer.ensureDeferred(
self.state.compute_event_context(event)
)
self.dummy_store.register_event_context(event, context)
context_store[event.event_id] = context
# C ends up winning the resolution between C and D because bans win over other
# changes
ctx_c = context_store["C"]
ctx_e = context_store["E"]
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prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(ctx_e.get_prev_state_ids())
self.assertSetEqual({"START", "A", "B", "C"}, set(prev_state_ids.values()))
self.assertEqual(ctx_c.state_group, ctx_e.state_group_before_event)
self.assertEqual(ctx_e.state_group_before_event, ctx_e.state_group)
@defer.inlineCallbacks
def test_branch_have_perms_conflict(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
userid1 = "@user_id:example.com"
userid2 = "@user_id2:example.com"
nodes = {
"A1": DictObj(
type=EventTypes.Create,
state_key="",
content={"creator": userid1},
depth=1,
),
"A2": DictObj(
type=EventTypes.Member,
state_key=userid1,
content={"membership": Membership.JOIN},
membership=Membership.JOIN,
),
"A3": DictObj(
type=EventTypes.Member,
state_key=userid2,
content={"membership": Membership.JOIN},
membership=Membership.JOIN,
),
"A4": DictObj(
type=EventTypes.PowerLevels,
state_key="",
content={
"events": {"m.room.name": 50},
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"users": {userid1: 100, userid2: 60},
},
),
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"A5": DictObj(type=EventTypes.Name, state_key=""),
"B": DictObj(
type=EventTypes.PowerLevels,
state_key="",
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content={"events": {"m.room.name": 50}, "users": {userid2: 30}},
),
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"C": DictObj(type=EventTypes.Name, state_key="", sender=userid2),
"D": DictObj(type=EventTypes.Message),
}
edges = {
"A2": ["A1"],
"A3": ["A2"],
"A4": ["A3"],
"A5": ["A4"],
"B": ["A5"],
"C": ["A5"],
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"D": ["B", "C"],
}
self._add_depths(nodes, edges)
graph = Graph(nodes, edges)
self.dummy_store.register_events(graph.walk())
context_store: Dict[str, EventContext] = {}
for event in graph.walk():
context = yield defer.ensureDeferred(
self.state.compute_event_context(event)
)
self.dummy_store.register_event_context(event, context)
context_store[event.event_id] = context
# B ends up winning the resolution between B and C because power levels
# win over other changes.
ctx_b = context_store["B"]
ctx_d = context_store["D"]
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prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(ctx_d.get_prev_state_ids())
self.assertSetEqual({"A1", "A2", "A3", "A5", "B"}, set(prev_state_ids.values()))
self.assertEqual(ctx_b.state_group, ctx_d.state_group_before_event)
self.assertEqual(ctx_d.state_group_before_event, ctx_d.state_group)
def _add_depths(
self, nodes: Dict[str, DictObj], edges: Dict[str, List[str]]
) -> None:
def _get_depth(ev: str) -> int:
node = nodes[ev]
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if "depth" not in node:
prevs = edges[ev]
depth = max(_get_depth(prev) for prev in prevs) + 1
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node["depth"] = depth
return node["depth"]
for n in nodes:
_get_depth(n)
@defer.inlineCallbacks
def test_annotate_with_old_message(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
event = create_event(type="test_message", name="event")
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old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
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]
context: EventContext
context = yield defer.ensureDeferred(
self.state.compute_event_context(
event,
state_ids_before_event={
(e.type, e.state_key): e.event_id for e in old_state
},
partial_state=False,
)
)
prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(context.get_prev_state_ids())
self.assertCountEqual((e.event_id for e in old_state), prev_state_ids.values())
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current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
self.assertCountEqual(
(e.event_id for e in old_state), current_state_ids.values()
)
self.assertIsNotNone(context.state_group_before_event)
self.assertEqual(context.state_group_before_event, context.state_group)
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@defer.inlineCallbacks
def test_annotate_with_old_state(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
event = create_event(type="state", state_key="", name="event")
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old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
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]
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context: EventContext
context = yield defer.ensureDeferred(
self.state.compute_event_context(
event,
state_ids_before_event={
(e.type, e.state_key): e.event_id for e in old_state
},
partial_state=False,
)
)
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prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(context.get_prev_state_ids())
self.assertCountEqual((e.event_id for e in old_state), prev_state_ids.values())
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current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
self.assertCountEqual(
(e.event_id for e in old_state + [event]), current_state_ids.values()
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)
assert context.state_group_before_event is not None
assert context.state_group is not None
self.assertEqual(
context.state_group_deltas.get(
(context.state_group_before_event, context.state_group)
),
{(event.type, event.state_key): event.event_id},
)
self.assertNotEqual(context.state_group_before_event, context.state_group)
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@defer.inlineCallbacks
def test_trivial_annotate_message(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
prev_event_id = "prev_event_id"
event = create_event(
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type="test_message", name="event2", prev_events=[(prev_event_id, {})]
)
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old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
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]
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group_name = yield defer.ensureDeferred(
self.dummy_store.store_state_group(
prev_event_id,
event.room_id,
None,
None,
{(e.type, e.state_key): e.event_id for e in old_state},
)
)
self.dummy_store.register_event_id_state_group(prev_event_id, group_name)
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context: EventContext
context = yield defer.ensureDeferred(self.state.compute_event_context(event))
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current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
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self.assertEqual(
{e.event_id for e in old_state}, set(current_state_ids.values())
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)
self.assertEqual(group_name, context.state_group)
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@defer.inlineCallbacks
def test_trivial_annotate_state(
self,
) -> Generator["defer.Deferred[object]", Any, None]:
prev_event_id = "prev_event_id"
event = create_event(
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type="state", state_key="", name="event2", prev_events=[(prev_event_id, {})]
)
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old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
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]
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group_name = yield defer.ensureDeferred(
self.dummy_store.store_state_group(
prev_event_id,
event.room_id,
None,
None,
{(e.type, e.state_key): e.event_id for e in old_state},
)
)
self.dummy_store.register_event_id_state_group(prev_event_id, group_name)
context: EventContext
context = yield defer.ensureDeferred(self.state.compute_event_context(event))
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prev_state_ids: StateMap[str]
prev_state_ids = yield defer.ensureDeferred(context.get_prev_state_ids())
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self.assertEqual({e.event_id for e in old_state}, set(prev_state_ids.values()))
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self.assertIsNotNone(context.state_group)
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@defer.inlineCallbacks
def test_resolve_message_conflict(
self,
) -> Generator["defer.Deferred[Any]", Any, None]:
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
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type="test_message",
name="event3",
prev_events=[(prev_event_id1, {}), (prev_event_id2, {})],
)
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creation = create_event(type=EventTypes.Create, state_key="")
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old_state_1 = [
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creation,
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
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old_state_2 = [
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creation,
create_event(type="test1", state_key="1"),
create_event(type="test3", state_key="2"),
create_event(type="test4", state_key=""),
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]
self.dummy_store.register_events(old_state_1)
self.dummy_store.register_events(old_state_2)
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context: EventContext
context = yield self._get_context(
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event, prev_event_id1, old_state_1, prev_event_id2, old_state_2
)
current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
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self.assertEqual(len(current_state_ids), 6)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_resolve_state_conflict(
self,
) -> Generator["defer.Deferred[Any]", Any, None]:
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
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type="test4",
state_key="",
name="event",
prev_events=[(prev_event_id1, {}), (prev_event_id2, {})],
)
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creation = create_event(type=EventTypes.Create, state_key="")
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old_state_1 = [
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creation,
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
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old_state_2 = [
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creation,
create_event(type="test1", state_key="1"),
create_event(type="test3", state_key="2"),
create_event(type="test4", state_key=""),
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]
store = _DummyStore()
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store.register_events(old_state_1)
store.register_events(old_state_2)
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self.dummy_store.get_events = store.get_events # type: ignore[method-assign]
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context: EventContext
context = yield self._get_context(
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event, prev_event_id1, old_state_1, prev_event_id2, old_state_2
)
current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
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self.assertEqual(len(current_state_ids), 6)
self.assertIsNotNone(context.state_group)
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@defer.inlineCallbacks
def test_standard_depth_conflict(
self,
) -> Generator["defer.Deferred[Any]", Any, None]:
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
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type="test4",
name="event",
prev_events=[(prev_event_id1, {}), (prev_event_id2, {})],
)
member_event = create_event(
type=EventTypes.Member,
state_key="@user_id:example.com",
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content={"membership": Membership.JOIN},
)
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power_levels = create_event(
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type=EventTypes.PowerLevels,
state_key="",
content={"users": {"@foo:bar": "100", "@user_id:example.com": "100"}},
)
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creation = create_event(
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type=EventTypes.Create, state_key="", content={"creator": "@foo:bar"}
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)
old_state_1 = [
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creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=1),
]
old_state_2 = [
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creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=2),
]
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store = _DummyStore()
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store.register_events(old_state_1)
store.register_events(old_state_2)
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self.dummy_store.get_events = store.get_events # type: ignore[method-assign]
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context: EventContext
context = yield self._get_context(
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event, prev_event_id1, old_state_1, prev_event_id2, old_state_2
)
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current_state_ids: StateMap[str]
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
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self.assertEqual(old_state_2[3].event_id, current_state_ids[("test1", "1")])
# Reverse the depth to make sure we are actually using the depths
# during state resolution.
old_state_1 = [
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creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=2),
]
old_state_2 = [
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creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=1),
]
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store.register_events(old_state_1)
store.register_events(old_state_2)
context = yield self._get_context(
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event, prev_event_id1, old_state_1, prev_event_id2, old_state_2
)
current_state_ids = yield defer.ensureDeferred(context.get_current_state_ids())
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self.assertEqual(old_state_1[3].event_id, current_state_ids[("test1", "1")])
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@defer.inlineCallbacks
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def _get_context(
self,
event: EventBase,
prev_event_id_1: str,
old_state_1: Collection[EventBase],
prev_event_id_2: str,
old_state_2: Collection[EventBase],
) -> Generator["defer.Deferred[object]", Any, EventContext]:
sg1: int
sg1 = yield defer.ensureDeferred(
self.dummy_store.store_state_group(
prev_event_id_1,
event.room_id,
None,
None,
{(e.type, e.state_key): e.event_id for e in old_state_1},
)
)
self.dummy_store.register_event_id_state_group(prev_event_id_1, sg1)
sg2: int
sg2 = yield defer.ensureDeferred(
self.dummy_store.store_state_group(
prev_event_id_2,
event.room_id,
None,
None,
{(e.type, e.state_key): e.event_id for e in old_state_2},
)
)
self.dummy_store.register_event_id_state_group(prev_event_id_2, sg2)
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result = yield defer.ensureDeferred(self.state.compute_event_context(event))
return result
def test_make_state_cache_entry(self) -> None:
"Test that calculating a prev_group and delta is correct"
new_state = {
("a", ""): "E",
("b", ""): "E",
("c", ""): "E",
("d", ""): "E",
}
# old_state_1 has fewer differences to new_state than old_state_2, but
# the delta involves deleting a key, which isn't allowed in the deltas,
# so we should pick old_state_2 as the prev_group.
# `old_state_1` has two differences: `a` and `e`
old_state_1 = {
("a", ""): "F",
("b", ""): "E",
("c", ""): "E",
("d", ""): "E",
("e", ""): "E",
}
# `old_state_2` has three differences: `a`, `c` and `d`
old_state_2 = {
("a", ""): "F",
("b", ""): "E",
("c", ""): "F",
("d", ""): "F",
}
entry = _make_state_cache_entry(new_state, {1: old_state_1, 2: old_state_2})
self.assertEqual(entry.prev_group, 2)
# There are three changes from `old_state_2` to `new_state`
self.assertEqual(
entry.delta_ids, {("a", ""): "E", ("c", ""): "E", ("d", ""): "E"}
)