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Supply auth_chain along with current state in '/state/', fetch auth events from a remote server if we are missing some of them

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This commit is contained in:
Mark Haines 2014-12-18 18:47:13 +00:00
parent dbe77ec79a
commit 041ac476a5
4 changed files with 56 additions and 32 deletions
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29
synapse/federation/replication.py
View file

@ -256,31 +256,35 @@ class ReplicationLayer(object):
@defer.inlineCallbacks
@log_function
def get_state_for_context(self, destination, context, event_id=None):
def get_state_for_context(self, destination, context, event_id):
"""Requests all of the `current` state PDUs for a given context from
a remote home server.
Args:
destination (str): The remote homeserver to query for the state.
context (str): The context we're interested in.
event_id (str): The id of the event we want the state at.
Returns:
Deferred: Results in a list of PDUs.
"""
transaction_data = yield self.transport_layer.get_context_state(
result = yield self.transport_layer.get_context_state(
destination,
context,
event_id=event_id,
)
transaction = Transaction(**transaction_data)
pdus = [
self.event_from_pdu_json(p, outlier=True)
for p in transaction.pdus
self.event_from_pdu_json(p, outlier=True) for p in result["pdus"]
]
defer.returnValue(pdus)
auth_chain = [
self.event_from_pdu_json(p, outlier=True)
for p in result.get("auth_chain", [])
]
defer.returnValue((pdus, auth_chain))
@defer.inlineCallbacks
@log_function
@ -383,10 +387,16 @@ class ReplicationLayer(object):
context,
event_id,
)
auth_chain = yield self.store.get_auth_chain(
[pdu.event_id for pdu in pdus]
)
else:
raise NotImplementedError("Specify an event")
defer.returnValue((200, self._transaction_from_pdus(pdus).get_dict()))
defer.returnValue((200, {
"pdus": [pdu.get_pdu_json() for pdu in pdus],
"auth_chain": [pdu.get_pdu_json() for pdu in auth_chain],
}))
@defer.inlineCallbacks
@log_function
@ -573,6 +583,8 @@ class ReplicationLayer(object):
state = None
auth_chain = []
# We need to make sure we have all the auth events.
# for e_id, _ in pdu.auth_events:
# exists = yield self._get_persisted_pdu(
@ -645,7 +657,7 @@ class ReplicationLayer(object):
"_handle_new_pdu getting state for %s",
pdu.room_id
)
state = yield self.get_state_for_context(
state, auth_chain = yield self.get_state_for_context(
origin, pdu.room_id, pdu.event_id,
)
@ -655,6 +667,7 @@ class ReplicationLayer(object):
pdu,
backfilled=backfilled,
state=state,
auth_chain=auth_chain,
)
else:
ret = None

55
synapse/handlers/federation.py
View file

@ -95,7 +95,8 @@ class FederationHandler(BaseHandler):
@log_function
@defer.inlineCallbacks
def on_receive_pdu(self, origin, pdu, backfilled, state=None):
def on_receive_pdu(self, origin, pdu, backfilled, state=None,
auth_chain=None):
""" Called by the ReplicationLayer when we have a new pdu. We need to
do auth checks and put it through the StateHandler.
"""
@ -150,35 +151,35 @@ class FederationHandler(BaseHandler):
if not is_in_room and not event.internal_metadata.outlier:
logger.debug("Got event for room we're not in.")
replication_layer = self.replication_layer
auth_chain = yield replication_layer.get_event_auth(
origin,
context=event.room_id,
event_id=event.event_id,
)
replication = self.replication_layer
if not state:
state, auth_chain = yield replication.get_state_for_context(
origin, context=event.room_id, event_id=event.event_id,
)
if not auth_chain:
auth_chain = yield replication.get_event_auth(
origin,
context=event.room_id,
event_id=event.event_id,
)
for e in auth_chain:
e.internal_metadata.outlier = True
try:
yield self._handle_new_event(e, fetch_missing=False)
yield self._handle_new_event(e, fetch_auth_from=origin)
except:
logger.exception(
"Failed to handle auth event %s",
e.event_id,
)
if not state:
state = yield replication_layer.get_state_for_context(
origin,
context=event.room_id,
event_id=event.event_id,
)
# FIXME: Get auth chain for these state events
current_state = state
if state:
for e in state:
logging.info("A :) %r", e)
e.internal_metadata.outlier = True
try:
yield self._handle_new_event(e)
@ -392,7 +393,7 @@ class FederationHandler(BaseHandler):
for e in auth_chain:
e.internal_metadata.outlier = True
try:
yield self._handle_new_event(e, fetch_missing=False)
yield self._handle_new_event(e)
except:
logger.exception(
"Failed to handle auth event %s",
@ -404,8 +405,7 @@ class FederationHandler(BaseHandler):
e.internal_metadata.outlier = True
try:
yield self._handle_new_event(
e,
fetch_missing=True
e, fetch_auth_from=target_host
)
except:
logger.exception(
@ -682,7 +682,7 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
def _handle_new_event(self, event, state=None, backfilled=False,
current_state=None, fetch_missing=True):
current_state=None, fetch_auth_from=None):
logger.debug(
"_handle_new_event: Before annotate: %s, sigs: %s",
@ -703,11 +703,20 @@ class FederationHandler(BaseHandler):
known_ids = set(
[s.event_id for s in context.auth_events.values()]
)
for e_id, _ in event.auth_events:
if e_id not in known_ids:
e = yield self.store.get_event(
e_id, allow_none=True,
)
e = yield self.store.get_event(e_id, allow_none=True)
if not e and fetch_auth_from is not None:
# Grab the auth_chain over federation if we are missing
# auth events.
auth_chain = yield self.replication_layer.get_event_auth(
fetch_auth_from, event.event_id, event.room_id
)
for auth_event in auth_chain:
yield self._handle_new_event(auth_event)
e = yield self.store.get_event(e_id, allow_none=True)
if not e:
# TODO: Do some conflict res to make sure that we're

2
synapse/util/distributor.py
View file

@ -120,5 +120,5 @@ class Signal(object):
results = []
for deferred in deferreds:
result = yield deferred
results.append(results)
results.append(result)
defer.returnValue(results)

2
tests/federation/test_federation.py
View file

@ -52,6 +52,7 @@ class FederationTestCase(unittest.TestCase):
"get_received_txn_response",
"set_received_txn_response",
"get_destination_retry_timings",
"get_auth_chain",
])
self.mock_persistence.get_received_txn_response.return_value = (
defer.succeed(None)
@ -59,6 +60,7 @@ class FederationTestCase(unittest.TestCase):
self.mock_persistence.get_destination_retry_timings.return_value = (
defer.succeed(DestinationsTable.EntryType("", 0, 0))
)
self.mock_persistence.get_auth_chain.return_value = []
self.mock_config = Mock()
self.mock_config.signing_key = [MockKey()]
self.clock = MockClock()