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Correctly handle the difference between prev and current state

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This commit is contained in:
Erik Johnston 2016-08-31 13:55:02 +01:00
parent 1bb8ec296d
commit c10cb581c6
12 changed files with 102 additions and 69 deletions
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4
synapse/api/auth.py
View file

@ -66,7 +66,7 @@ class Auth(object):
@defer.inlineCallbacks
def check_from_context(self, event, context, do_sig_check=True):
auth_events_ids = yield self.compute_auth_events(
event, context.current_state_ids, for_verification=True,
event, context.prev_state_ids, for_verification=True,
)
auth_events = yield self.store.get_events(auth_events_ids)
auth_events = {
@ -852,7 +852,7 @@ class Auth(object):
@defer.inlineCallbacks
def add_auth_events(self, builder, context):
auth_ids = yield self.compute_auth_events(builder, context.current_state_ids)
auth_ids = yield self.compute_auth_events(builder, context.prev_state_ids)
auth_events_entries = yield self.store.add_event_hashes(
auth_ids

5
synapse/events/snapshot.py
View file

@ -15,8 +15,9 @@
class EventContext(object):
def __init__(self, current_state_ids=None):
self.current_state_ids = current_state_ids
def __init__(self):
self.current_state_ids = None
self.prev_state_ids = None
self.state_group = None
self.rejected = False
self.push_actions = []

31
synapse/handlers/federation.py
View file

@ -222,7 +222,7 @@ class FederationHandler(BaseHandler):
# joined the room. Don't bother if the user is just
# changing their profile info.
newly_joined = True
prev_state_id = context.current_state_ids.get(
prev_state_id = context.prev_state_ids.get(
(event.type, event.state_key)
)
if prev_state_id:
@ -835,12 +835,12 @@ class FederationHandler(BaseHandler):
self.replication_layer.send_pdu(new_pdu, destinations)
state_ids = context.current_state_ids.values()
state_ids = context.prev_state_ids.values()
auth_chain = yield self.store.get_auth_chain(set(
[event.event_id] + state_ids
))
state = yield self.store.get_events(context.current_state_ids.values())
state = yield self.store.get_events(context.prev_state_ids.values())
defer.returnValue({
"state": state.values(),
@ -1333,7 +1333,7 @@ class FederationHandler(BaseHandler):
if not auth_events:
auth_events_ids = yield self.auth.compute_auth_events(
event, context.current_state_ids, for_verification=True,
event, context.prev_state_ids, for_verification=True,
)
auth_events = yield self.store.get_events(auth_events_ids)
auth_events = {
@ -1432,6 +1432,11 @@ class FederationHandler(BaseHandler):
current_state = set(e.event_id for e in auth_events.values())
event_auth_events = set(e_id for e_id, _ in event.auth_events)
if event.is_state():
event_key = (event.type, event.state_key)
else:
event_key = None
if event_auth_events - current_state:
have_events = yield self.store.have_events(
event_auth_events - current_state
@ -1537,8 +1542,12 @@ class FederationHandler(BaseHandler):
context.current_state_ids.update({
k: a.event_id for k, a in auth_events.items()
if k != event_key
})
context.state_group = None
context.prev_state_ids.update({
k: a.event_id for k, a in auth_events.items()
})
context.state_group = self.store.get_next_state_group()
if different_auth and not event.internal_metadata.is_outlier():
logger.info("Different auth after resolution: %s", different_auth)
@ -1560,7 +1569,7 @@ class FederationHandler(BaseHandler):
if do_resolution:
# 1. Get what we think is the auth chain.
auth_ids = yield self.auth.compute_auth_events(
event, context.current_state_ids
event, context.prev_state_ids
)
local_auth_chain = yield self.store.get_auth_chain(auth_ids)
@ -1618,8 +1627,12 @@ class FederationHandler(BaseHandler):
context.current_state_ids.update({
k: a.event_id for k, a in auth_events.items()
if k != event_key
})
context.state_group = None
context.prev_state_ids.update({
k: a.event_id for k, a in auth_events.items()
})
context.state_group = self.store.get_next_state_group()
try:
self.auth.check(event, auth_events=auth_events)
@ -1855,7 +1868,7 @@ class FederationHandler(BaseHandler):
event.content["third_party_invite"]["signed"]["token"]
)
original_invite = None
original_invite_id = context.current_state_ids.get(key)
original_invite_id = context.prev_state_ids.get(key)
if original_invite_id:
original_invite = yield self.store.get_event(
original_invite_id, allow_none=True
@ -1893,7 +1906,7 @@ class FederationHandler(BaseHandler):
signed = event.content["third_party_invite"]["signed"]
token = signed["token"]
invite_event_id = context.current_state_ids.get(
invite_event_id = context.prev_state_ids.get(
(EventTypes.ThirdPartyInvite, token,)
)

10
synapse/handlers/message.py
View file

@ -272,7 +272,7 @@ class MessageHandler(BaseHandler):
If so, returns the version of the event in context.
Otherwise, returns None.
"""
prev_event_id = context.current_state_ids.get((event.type, event.state_key))
prev_event_id = context.prev_state_ids.get((event.type, event.state_key))
prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
if not prev_event:
return
@ -808,8 +808,8 @@ class MessageHandler(BaseHandler):
event = builder.build()
logger.debug(
"Created event %s with current state: %s",
event.event_id, context.current_state_ids,
"Created event %s with state: %s",
event.event_id, context.prev_state_ids,
)
defer.returnValue(
@ -904,7 +904,7 @@ class MessageHandler(BaseHandler):
if event.type == EventTypes.Redaction:
auth_events_ids = yield self.auth.compute_auth_events(
event, context.current_state_ids, for_verification=True,
event, context.prev_state_ids, for_verification=True,
)
auth_events = yield self.store.get_events(auth_events_ids)
auth_events = {
@ -924,7 +924,7 @@ class MessageHandler(BaseHandler):
"You don't have permission to redact events"
)
if event.type == EventTypes.Create and context.current_state_ids:
if event.type == EventTypes.Create and context.prev_state_ids:
raise AuthError(
403,
"Changing the room create event is forbidden",

6
synapse/handlers/room_member.py
View file

@ -93,7 +93,7 @@ class RoomMemberHandler(BaseHandler):
ratelimit=ratelimit,
)
prev_member_event_id = context.current_state_ids.get(
prev_member_event_id = context.prev_state_ids.get(
(EventTypes.Member, target.to_string()),
None
)
@ -341,7 +341,7 @@ class RoomMemberHandler(BaseHandler):
if event.membership == Membership.JOIN:
if requester.is_guest:
guest_can_join = yield self._can_guest_join(context.current_state_ids)
guest_can_join = yield self._can_guest_join(context.prev_state_ids)
if not guest_can_join:
# This should be an auth check, but guests are a local concept,
# so don't really fit into the general auth process.
@ -355,7 +355,7 @@ class RoomMemberHandler(BaseHandler):
ratelimit=ratelimit,
)
prev_member_event_id = context.current_state_ids.get(
prev_member_event_id = context.prev_state_ids.get(
(EventTypes.Member, event.state_key),
None
)

2
synapse/push/bulk_push_rule_evaluator.py
View file

@ -87,7 +87,7 @@ class BulkPushRuleEvaluator:
)
room_members = yield self.store.get_joined_users_from_context(
event.room_id, context.state_group, context.current_state_ids
event, context
)
evaluator = PushRuleEvaluatorForEvent(event, len(room_members))

31
synapse/state.py
View file

@ -128,7 +128,7 @@ class StateHandler(object):
def get_current_user_in_room(self, room_id):
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
group, state_ids = yield self.resolve_state_groups(room_id, latest_event_ids)
joined_users = yield self.store.get_joined_users_from_context(
joined_users = yield self.store.get_joined_users_from_state(
room_id, group, state_ids
)
defer.returnValue(joined_users)
@ -154,27 +154,38 @@ class StateHandler(object):
# state. Certainly store.get_current_state won't return any, and
# persisting the event won't store the state group.
if old_state:
context.current_state_ids = {
context.prev_state_ids = {
(s.type, s.state_key): s.event_id for s in old_state
}
if event.is_state():
context.current_state_events = dict(context.prev_state_ids)
key = (event.type, event.state_key)
context.current_state_events[key] = event.event_id
else:
context.current_state_events = context.prev_state_ids
else:
context.current_state_ids = {}
context.prev_state_ids = {}
context.prev_state_events = []
context.state_group = self.store.get_next_state_group()
defer.returnValue(context)
if old_state:
context.current_state_ids = {
context.prev_state_ids = {
(s.type, s.state_key): s.event_id for s in old_state
}
context.state_group = self.store.get_next_state_group()
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state_ids:
replaces = context.current_state_ids[key]
if key in context.prev_state_ids:
replaces = context.prev_state_ids[key]
if replaces != event.event_id: # Paranoia check
event.unsigned["replaces_state"] = replaces
context.current_state_ids = dict(context.prev_state_ids)
context.current_state_ids[key] = event.event_id
else:
context.current_state_ids = context.prev_state_ids
context.prev_state_events = []
defer.returnValue(context)
@ -192,7 +203,7 @@ class StateHandler(object):
group, curr_state = ret
context.current_state_ids = curr_state
context.prev_state_ids = curr_state
if event.is_state() or group is None:
context.state_group = self.store.get_next_state_group()
else:
@ -200,9 +211,13 @@ class StateHandler(object):
if event.is_state():
key = (event.type, event.state_key)
if key in context.current_state_ids:
replaces = context.current_state_ids[key]
if key in context.prev_state_ids:
replaces = context.prev_state_ids[key]
event.unsigned["replaces_state"] = replaces
context.current_state_ids = dict(context.prev_state_ids)
context.current_state_ids[key] = event.event_id
else:
context.current_state_ids = context.prev_state_ids
context.prev_state_events = []
defer.returnValue(context)

27
synapse/storage/roommember.py
View file

@ -354,7 +354,8 @@ class RoomMemberStore(SQLBaseStore):
desc="who_forgot"
)
def get_joined_users_from_context(self, room_id, state_group, state_ids):
def get_joined_users_from_context(self, event, context):
state_group = context.state_group
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
@ -363,12 +364,24 @@ class RoomMemberStore(SQLBaseStore):
state_group = object()
return self._get_joined_users_from_context(
room_id, state_group, state_ids
event.room_id, state_group, context.current_state_ids, event=event,
)
def get_joined_users_from_state(self, room_id, state_group, state_ids):
if not state_group:
# If state_group is None it means it has yet to be assigned a
# state group, i.e. we need to make sure that calls with a state_group
# of None don't hit previous cached calls with a None state_group.
# To do this we set the state_group to a new object as object() != object()
state_group = object()
return self._get_joined_users_from_context(
room_id, state_group, state_ids,
)
@cachedInlineCallbacks(num_args=2, cache_context=True)
def _get_joined_users_from_context(self, room_id, state_group, current_state_ids,
cache_context):
cache_context, event=None):
# We don't use `state_group`, its there so that we can cache based
# on it. However, its important that its never None, since two current_state's
# with a state_group of None are likely to be different.
@ -393,7 +406,13 @@ class RoomMemberStore(SQLBaseStore):
desc="_get_joined_users_from_context",
)
defer.returnValue(set(row["user_id"] for row in rows))
users_in_room = set(row["user_id"] for row in rows)
if event is not None and event.type == EventTypes.Member:
if event.membership == Membership.JOIN:
if event.event_id in member_event_ids:
users_in_room.add(event.state_key)
defer.returnValue(users_in_room)
def is_host_joined(self, room_id, host, state_group, state_ids):
if not state_group:

3
synapse/storage/state.py
View file

@ -108,9 +108,6 @@ class StateStore(SQLBaseStore):
state_event_ids = dict(context.current_state_ids)
if event.is_state():
state_event_ids[(event.type, event.state_key)] = event.event_id
self._simple_insert_txn(
txn,
table="state_groups",

4
tests/replication/slave/storage/test_events.py
View file

@ -312,7 +312,9 @@ class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
else:
state_ids = None
context = EventContext(current_state_ids=state_ids)
context = EventContext()
context.current_state_ids = state_ids
context.prev_state_ids = state_ids
context.push_actions = push_actions
ordering = None

10
tests/replication/test_resource.py
View file

@ -60,8 +60,8 @@ class ReplicationResourceCase(unittest.TestCase):
self.assertEquals(body, {})
@defer.inlineCallbacks
def test_events_and_state(self):
get = self.get(events="-1", state="-1", timeout="0")
def test_events(self):
get = self.get(events="-1", timeout="0")
yield self.hs.get_handlers().room_creation_handler.create_room(
synapse.types.create_requester(self.user), {}
)
@ -70,12 +70,6 @@ class ReplicationResourceCase(unittest.TestCase):
self.assertEquals(body["events"]["field_names"], [
"position", "internal", "json", "state_group"
])
self.assertEquals(body["state_groups"]["field_names"], [
"position", "room_id", "event_id"
])
self.assertEquals(body["state_group_state"]["field_names"], [
"position", "type", "state_key", "event_id"
])
@defer.inlineCallbacks
def test_presence(self):

38
tests/test_state.py
View file

@ -86,17 +86,8 @@ class StateGroupStore(object):
state_events = dict(context.current_state_ids)
if event.is_state():
state_events[(event.type, event.state_key)] = event.event_id
state_group = context.state_group
if not state_group:
state_group = self._next_group
self._next_group += 1
self._group_to_state[state_group] = state_events
self._event_to_state_group[event.event_id] = state_group
self._group_to_state[context.state_group] = state_events
self._event_to_state_group[event.event_id] = context.state_group
def get_events(self, event_ids, **kwargs):
return {
@ -151,6 +142,7 @@ class StateTestCase(unittest.TestCase):
"get_state_groups_ids",
"add_event_hashes",
"get_events",
"get_next_state_group",
]
)
hs = Mock(spec_set=[
@ -161,6 +153,8 @@ class StateTestCase(unittest.TestCase):
hs.get_clock.return_value = MockClock()
hs.get_auth.return_value = Auth(hs)
self.store.get_next_state_group.side_effect = Mock
self.state = StateHandler(hs)
self.event_id = 0
@ -209,7 +203,7 @@ class StateTestCase(unittest.TestCase):
store.store_state_groups(event, context)
context_store[event.event_id] = context
self.assertEqual(2, len(context_store["D"].current_state_ids))
self.assertEqual(2, len(context_store["D"].prev_state_ids))
@defer.inlineCallbacks
def test_branch_basic_conflict(self):
@ -265,7 +259,7 @@ class StateTestCase(unittest.TestCase):
self.assertSetEqual(
{"START", "A", "C"},
{e_id for e_id in context_store["D"].current_state_ids.values()}
{e_id for e_id in context_store["D"].prev_state_ids.values()}
)
@defer.inlineCallbacks
@ -331,7 +325,7 @@ class StateTestCase(unittest.TestCase):
self.assertSetEqual(
{"START", "A", "B", "C"},
{e for e in context_store["E"].current_state_ids.values()}
{e for e in context_store["E"].prev_state_ids.values()}
)
@defer.inlineCallbacks
@ -414,7 +408,7 @@ class StateTestCase(unittest.TestCase):
self.assertSetEqual(
{"A1", "A2", "A3", "A5", "B"},
{e for e in context_store["D"].current_state_ids.values()}
{e for e in context_store["D"].prev_state_ids.values()}
)
def _add_depths(self, nodes, edges):
@ -447,7 +441,7 @@ class StateTestCase(unittest.TestCase):
set(e.event_id for e in old_state), set(context.current_state_ids.values())
)
self.assertIsNone(context.state_group)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_annotate_with_old_state(self):
@ -464,11 +458,9 @@ class StateTestCase(unittest.TestCase):
)
self.assertEqual(
set(e.event_id for e in old_state), set(context.current_state_ids.values())
set(e.event_id for e in old_state), set(context.prev_state_ids.values())
)
self.assertIsNone(context.state_group)
@defer.inlineCallbacks
def test_trivial_annotate_message(self):
event = create_event(type="test_message", name="event")
@ -514,10 +506,10 @@ class StateTestCase(unittest.TestCase):
self.assertEqual(
set([e.event_id for e in old_state]),
set(context.current_state_ids.values())
set(context.prev_state_ids.values())
)
self.assertIsNone(context.state_group)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_resolve_message_conflict(self):
@ -550,7 +542,7 @@ class StateTestCase(unittest.TestCase):
self.assertEqual(len(context.current_state_ids), 6)
self.assertIsNone(context.state_group)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_resolve_state_conflict(self):
@ -583,7 +575,7 @@ class StateTestCase(unittest.TestCase):
self.assertEqual(len(context.current_state_ids), 6)
self.assertIsNone(context.state_group)
self.assertIsNotNone(context.state_group)
@defer.inlineCallbacks
def test_standard_depth_conflict(self):