# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket 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.
from mock import Mock
from twisted.internet import defer
from synapse.api.auth import Auth
from synapse.api.constants import EventTypes, Membership
from synapse.events import FrozenEvent
from synapse.state import StateHandler, StateResolutionHandler
from tests import unittest
from .utils import MockClock
_next_event_id = 1000
def create_event(name=None, type=None, state_key=None, depth=2, event_id=None,
prev_events=[], **kwargs):
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:
name = "<%s-%s, %s>" % (type, state_key, event_id,)
else:
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,
}
if state_key is not None:
d["state_key"] = state_key
d.update(kwargs)
event = FrozenEvent(d)
return event
class StateGroupStore(object):
def __init__(self):
self._event_to_state_group = {}
self._group_to_state = {}
self._event_id_to_event = {}
self._next_group = 1
def get_state_groups_ids(self, room_id, event_ids):
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 defer.succeed(groups)
def store_state_group(self, event_id, room_id, prev_group, delta_ids,
current_state_ids):
state_group = self._next_group
self._next_group += 1
self._group_to_state[state_group] = dict(current_state_ids)
return state_group
def get_events(self, event_ids, **kwargs):
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
}
def get_state_group_delta(self, name):
return (None, None)
def register_events(self, events):
for e in events:
self._event_id_to_event[e.event_id] = e
def register_event_context(self, event, context):
self._event_to_state_group[event.event_id] = context.state_group
def register_event_id_state_group(self, event_id, state_group):
self._event_to_state_group[event_id] = state_group
class DictObj(dict):
def __init__(self, **kwargs):
super(DictObj, self).__init__(kwargs)
self.__dict__ = self
class Graph(object):
def __init__(self, nodes, edges):
events = {}
clobbered = set(events.keys())
for event_id, fields in nodes.items():
refs = edges.get(event_id)
if refs:
clobbered.difference_update(refs)
prev_events = [(r, {}) for r in refs]
else:
prev_events = []
events[event_id] = create_event(
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):
return iter(self._events)
def get_leaves(self):
return (self._events[i] for i in self._leaves)
class StateTestCase(unittest.TestCase):
def setUp(self):
self.store = StateGroupStore()
hs = Mock(spec_set=[
"get_datastore", "get_auth", "get_state_handler", "get_clock",
"get_state_resolution_handler",
])
hs.get_datastore.return_value = self.store
hs.get_state_handler.return_value = None
hs.get_clock.return_value = MockClock()
hs.get_auth.return_value = Auth(hs)
hs.get_state_resolution_handler = lambda: StateResolutionHandler(hs)
self.state = StateHandler(hs)
self.event_id = 0
@defer.inlineCallbacks
def test_branch_no_conflict(self):
graph = Graph(
nodes={
"START": DictObj(
type=EventTypes.Create,
state_key="",
depth=1,
),
"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,
),
},
edges={
"A": ["START"],
"B": ["A"],
"C": ["A"],
"D": ["B", "C"]
}
)
self.store.register_events(graph.walk())
context_store = {}
for event in graph.walk():
context = yield self.state.compute_event_context(event)
self.store.register_event_context(event, context)
context_store[event.event_id] = context
prev_state_ids = yield context_store["D"].get_prev_state_ids(self.store)
self.assertEqual(2, len(prev_state_ids))
@defer.inlineCallbacks
def test_branch_basic_conflict(self):
graph = Graph(
nodes={
"START": DictObj(
type=EventTypes.Create,
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,
),
"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,
),
},
edges={
"A": ["START"],
"B": ["A"],
"C": ["A"],
"D": ["B", "C"]
}
)
self.store.register_events(graph.walk())
context_store = {}
for event in graph.walk():
context = yield self.state.compute_event_context(event)
self.store.register_event_context(event, context)
context_store[event.event_id] = context
prev_state_ids = yield context_store["D"].get_prev_state_ids(self.store)
self.assertSetEqual(
{"START", "A", "C"},
{e_id for e_id in prev_state_ids.values()}
)
@defer.inlineCallbacks
def test_branch_have_banned_conflict(self):
graph = Graph(
nodes={
"START": DictObj(
type=EventTypes.Create,
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,
),
"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",
),
"E": DictObj(
type=EventTypes.Message,
depth=5,
),
},
edges={
"A": ["START"],
"B": ["A"],
"C": ["B"],
"D": ["B"],
"E": ["C", "D"]
}
)
self.store.register_events(graph.walk())
context_store = {}
for event in graph.walk():
context = yield self.state.compute_event_context(event)
self.store.register_event_context(event, context)
context_store[event.event_id] = context
prev_state_ids = yield context_store["E"].get_prev_state_ids(self.store)
self.assertSetEqual(
{"START", "A", "B", "C"},
{e for e in prev_state_ids.values()}
)
@defer.inlineCallbacks
def test_branch_have_perms_conflict(self):
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},
"users": {userid1: 100,
userid2: 60},
},
),
"A5": DictObj(
type=EventTypes.Name,
state_key="",
),
"B": DictObj(
type=EventTypes.PowerLevels,
state_key="",
content={
"events": {"m.room.name": 50},
"users": {userid2: 30},
},
),
"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"],
"D": ["B", "C"]
}
self._add_depths(nodes, edges)
graph = Graph(nodes, edges)
self.store.register_events(graph.walk())
context_store = {}
for event in graph.walk():
context = yield self.state.compute_event_context(event)
self.store.register_event_context(event, context)
context_store[event.event_id] = context
prev_state_ids = yield context_store["D"].get_prev_state_ids(self.store)
self.assertSetEqual(
{"A1", "A2", "A3", "A5", "B"},
{e for e in prev_state_ids.values()}
)
def _add_depths(self, nodes, edges):
def _get_depth(ev):
node = nodes[ev]
if 'depth' not in node:
prevs = edges[ev]
depth = max(_get_depth(prev) for prev in prevs) + 1
node['depth'] = depth
return node['depth']
for n in nodes:
_get_depth(n)
@defer.inlineCallbacks
def test_annotate_with_old_message(self):
event = create_event(type="test_message", name="event")
old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
context = yield self.state.compute_event_context(
event, old_state=old_state
)
current_state_ids = yield context.get_current_state_ids(self.store)
self.assertEqual(
set(e.event_id for e in old_state), set(current_state_ids.values())
)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_annotate_with_old_state(self):
event = create_event(type="state", state_key="", name="event")
old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
context = yield self.state.compute_event_context(
event, old_state=old_state
)
prev_state_ids = yield context.get_prev_state_ids(self.store)
self.assertEqual(
set(e.event_id for e in old_state), set(prev_state_ids.values())
)
@defer.inlineCallbacks
def test_trivial_annotate_message(self):
prev_event_id = "prev_event_id"
event = create_event(
type="test_message", name="event2",
prev_events=[(prev_event_id, {})],
)
old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
group_name = self.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.store.register_event_id_state_group(prev_event_id, group_name)
context = yield self.state.compute_event_context(event)
current_state_ids = yield context.get_current_state_ids(self.store)
self.assertEqual(
set([e.event_id for e in old_state]),
set(current_state_ids.values())
)
self.assertEqual(group_name, context.state_group)
@defer.inlineCallbacks
def test_trivial_annotate_state(self):
prev_event_id = "prev_event_id"
event = create_event(
type="state", state_key="", name="event2",
prev_events=[(prev_event_id, {})],
)
old_state = [
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
group_name = self.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.store.register_event_id_state_group(prev_event_id, group_name)
context = yield self.state.compute_event_context(event)
prev_state_ids = yield context.get_prev_state_ids(self.store)
self.assertEqual(
set([e.event_id for e in old_state]),
set(prev_state_ids.values())
)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_resolve_message_conflict(self):
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
type="test_message", name="event3",
prev_events=[(prev_event_id1, {}), (prev_event_id2, {})],
)
creation = create_event(
type=EventTypes.Create, state_key=""
)
old_state_1 = [
creation,
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
old_state_2 = [
creation,
create_event(type="test1", state_key="1"),
create_event(type="test3", state_key="2"),
create_event(type="test4", state_key=""),
]
self.store.register_events(old_state_1)
self.store.register_events(old_state_2)
context = yield self._get_context(
event, prev_event_id1, old_state_1, prev_event_id2, old_state_2,
)
current_state_ids = yield context.get_current_state_ids(self.store)
self.assertEqual(len(current_state_ids), 6)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_resolve_state_conflict(self):
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
type="test4", state_key="", name="event",
prev_events=[(prev_event_id1, {}), (prev_event_id2, {})],
)
creation = create_event(
type=EventTypes.Create, state_key=""
)
old_state_1 = [
creation,
create_event(type="test1", state_key="1"),
create_event(type="test1", state_key="2"),
create_event(type="test2", state_key=""),
]
old_state_2 = [
creation,
create_event(type="test1", state_key="1"),
create_event(type="test3", state_key="2"),
create_event(type="test4", state_key=""),
]
store = StateGroupStore()
store.register_events(old_state_1)
store.register_events(old_state_2)
self.store.get_events = store.get_events
context = yield self._get_context(
event, prev_event_id1, old_state_1, prev_event_id2, old_state_2,
)
current_state_ids = yield context.get_current_state_ids(self.store)
self.assertEqual(len(current_state_ids), 6)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_standard_depth_conflict(self):
prev_event_id1 = "event_id1"
prev_event_id2 = "event_id2"
event = create_event(
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",
content={
"membership": Membership.JOIN,
}
)
power_levels = create_event(
type=EventTypes.PowerLevels, state_key="",
content={"users": {
"@foo:bar": "100",
"@user_id:example.com": "100",
}}
)
creation = create_event(
type=EventTypes.Create, state_key="",
content={"creator": "@foo:bar"}
)
old_state_1 = [
creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=1),
]
old_state_2 = [
creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=2),
]
store = StateGroupStore()
store.register_events(old_state_1)
store.register_events(old_state_2)
self.store.get_events = store.get_events
context = yield self._get_context(
event, prev_event_id1, old_state_1, prev_event_id2, old_state_2,
)
current_state_ids = yield context.get_current_state_ids(self.store)
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 = [
creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=2),
]
old_state_2 = [
creation,
power_levels,
member_event,
create_event(type="test1", state_key="1", depth=1),
]
store.register_events(old_state_1)
store.register_events(old_state_2)
context = yield self._get_context(
event, prev_event_id1, old_state_1, prev_event_id2, old_state_2,
)
current_state_ids = yield context.get_current_state_ids(self.store)
self.assertEqual(
old_state_1[3].event_id, current_state_ids[("test1", "1")]
)
def _get_context(self, event, prev_event_id_1, old_state_1, prev_event_id_2,
old_state_2):
sg1 = self.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.store.register_event_id_state_group(prev_event_id_1, sg1)
sg2 = self.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.store.register_event_id_state_group(prev_event_id_2, sg2)
return self.state.compute_event_context(event)