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Add room_version param to get_pdu 

When we add new event format we'll need to know the event format or room
version when parsing events.
This commit is contained in:
Erik Johnston 2019-01-23 17:19:58 +00:00
parent 6b90ae6efc
commit 6a41d2a187
4 changed files with 60 additions and 13 deletions
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11
synapse/federation/federation_base.py
View File

@ -43,8 +43,8 @@ class FederationBase(object):
self._clock = hs.get_clock()
@defer.inlineCallbacks
def _check_sigs_and_hash_and_fetch(self, origin, pdus, outlier=False,
include_none=False):
def _check_sigs_and_hash_and_fetch(self, origin, pdus, room_version,
outlier=False, include_none=False):
"""Takes a list of PDUs and checks the signatures and hashs of each
one. If a PDU fails its signature check then we check if we have it in
the database and if not then request if from the originating server of
@ -56,8 +56,12 @@ class FederationBase(object):
a new list.
Args:
origin (str)
pdu (list)
outlier (bool)
room_version (str)
outlier (bool): Whether the events are outliers or not
include_none (str): Whether to include None in the returned list
for events that have failed their checks
Returns:
Deferred : A list of PDUs that have valid signatures and hashes.
@ -84,6 +88,7 @@ class FederationBase(object):
res = yield self.get_pdu(
destinations=[pdu.origin],
event_id=pdu.event_id,
room_version=room_version,
outlier=outlier,
timeout=10000,
)

46
synapse/federation/federation_client.py
View File

@ -25,7 +25,12 @@ from prometheus_client import Counter
from twisted.internet import defer
from synapse.api.constants import KNOWN_ROOM_VERSIONS, EventTypes, Membership
from synapse.api.constants import (
KNOWN_ROOM_VERSIONS,
EventTypes,
Membership,
RoomVersions,
)
from synapse.api.errors import (
CodeMessageException,
FederationDeniedError,
@ -202,7 +207,8 @@ class FederationClient(FederationBase):
@defer.inlineCallbacks
@log_function
def get_pdu(self, destinations, event_id, outlier=False, timeout=None):
def get_pdu(self, destinations, event_id, room_version, outlier=False,
timeout=None):
"""Requests the PDU with given origin and ID from the remote home
servers.
@ -212,6 +218,7 @@ class FederationClient(FederationBase):
Args:
destinations (list): Which home servers to query
event_id (str): event to fetch
room_version (str): version of the room
outlier (bool): Indicates whether the PDU is an `outlier`, i.e. if
it's from an arbitary point in the context as opposed to part
of the current block of PDUs. Defaults to `False`
@ -352,10 +359,13 @@ class FederationClient(FederationBase):
ev.event_id for ev in itertools.chain(pdus, auth_chain)
])
room_version = yield self.store.get_room_version(room_id)
signed_pdus = yield self._check_sigs_and_hash_and_fetch(
destination,
[p for p in pdus if p.event_id not in seen_events],
outlier=True
outlier=True,
room_version=room_version,
)
signed_pdus.extend(
seen_events[p.event_id] for p in pdus if p.event_id in seen_events
@ -364,7 +374,8 @@ class FederationClient(FederationBase):
signed_auth = yield self._check_sigs_and_hash_and_fetch(
destination,
[p for p in auth_chain if p.event_id not in seen_events],
outlier=True
outlier=True,
room_version=room_version,
)
signed_auth.extend(
seen_events[p.event_id] for p in auth_chain if p.event_id in seen_events
@ -411,6 +422,8 @@ class FederationClient(FederationBase):
random.shuffle(srvs)
return srvs
room_version = yield self.store.get_room_version(room_id)
batch_size = 20
missing_events = list(missing_events)
for i in range(0, len(missing_events), batch_size):
@ -421,6 +434,7 @@ class FederationClient(FederationBase):
self.get_pdu,
destinations=random_server_list(),
event_id=e_id,
room_version=room_version,
)
for e_id in batch
]
@ -450,8 +464,11 @@ class FederationClient(FederationBase):
for p in res["auth_chain"]
]
room_version = yield self.store.get_room_version(room_id)
signed_auth = yield self._check_sigs_and_hash_and_fetch(
destination, auth_chain, outlier=True
destination, auth_chain,
outlier=True, room_version=room_version,
)
signed_auth.sort(key=lambda e: e.depth)
@ -650,9 +667,20 @@ class FederationClient(FederationBase):
for p in itertools.chain(state, auth_chain)
}
room_version = None
for e in state:
if (e.type, e.state_key) == (EventTypes.Create, ""):
room_version = e.content.get("room_version", RoomVersions.V1)
break
if room_version is None:
# We use this error has that is what
raise SynapseError(400, "No create event in state")
valid_pdus = yield self._check_sigs_and_hash_and_fetch(
destination, list(pdus.values()),
outlier=True,
room_version=room_version,
)
valid_pdus_map = {
@ -790,8 +818,10 @@ class FederationClient(FederationBase):
for e in content["auth_chain"]
]
room_version = yield self.store.get_room_version(room_id)
signed_auth = yield self._check_sigs_and_hash_and_fetch(
destination, auth_chain, outlier=True
destination, auth_chain, outlier=True, room_version=room_version,
)
signed_auth.sort(key=lambda e: e.depth)
@ -838,8 +868,10 @@ class FederationClient(FederationBase):
for e in content.get("events", [])
]
room_version = yield self.store.get_room_version(room_id)
signed_events = yield self._check_sigs_and_hash_and_fetch(
destination, events, outlier=False
destination, events, outlier=False, room_version=room_version,
)
except HttpResponseException as e:
if not e.code == 400:

4
synapse/federation/federation_server.py
View File

@ -457,8 +457,10 @@ class FederationServer(FederationBase):
for e in content["auth_chain"]
]
room_version = yield self.store.get_room_version(room_id)
signed_auth = yield self._check_sigs_and_hash_and_fetch(
origin, auth_chain, outlier=True
origin, auth_chain, outlier=True, room_version=room_version,
)
ret = yield self.handler.on_query_auth(

12
synapse/handlers/federation.py
View File

@ -34,6 +34,7 @@ from synapse.api.constants import (
EventTypes,
Membership,
RejectedReason,
RoomVersions,
)
from synapse.api.errors import (
AuthError,
@ -342,6 +343,8 @@ class FederationHandler(BaseHandler):
room_id, event_id, p,
)
room_version = yield self.store.get_room_version(room_id)
with logcontext.nested_logging_context(p):
# note that if any of the missing prevs share missing state or
# auth events, the requests to fetch those events are deduped
@ -355,7 +358,7 @@ class FederationHandler(BaseHandler):
# we want the state *after* p; get_state_for_room returns the
# state *before* p.
remote_event = yield self.federation_client.get_pdu(
[origin], p, outlier=True,
[origin], p, room_version, outlier=True,
)
if remote_event is None:
@ -379,7 +382,6 @@ class FederationHandler(BaseHandler):
for x in remote_state:
event_map[x.event_id] = x
room_version = yield self.store.get_room_version(room_id)
state_map = yield resolve_events_with_store(
room_version, state_maps, event_map,
state_res_store=StateResolutionStore(self.store),
@ -655,6 +657,8 @@ class FederationHandler(BaseHandler):
if dest == self.server_name:
raise SynapseError(400, "Can't backfill from self.")
room_version = yield self.store.get_room_version(room_id)
events = yield self.federation_client.backfill(
dest,
room_id,
@ -748,6 +752,7 @@ class FederationHandler(BaseHandler):
self.federation_client.get_pdu,
[dest],
event_id,
room_version=room_version,
outlier=True,
timeout=10000,
)
@ -1659,6 +1664,8 @@ class FederationHandler(BaseHandler):
create_event = e
break
room_version = create_event.content.get("room_version", RoomVersions.V1)
missing_auth_events = set()
for e in itertools.chain(auth_events, state, [event]):
for e_id in e.auth_event_ids():
@ -1669,6 +1676,7 @@ class FederationHandler(BaseHandler):
m_ev = yield self.federation_client.get_pdu(
[origin],
e_id,
room_version=room_version,
outlier=True,
timeout=10000,
)