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Implement and use new batched get missing pdu

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This commit is contained in:
Erik Johnston 2015-02-23 13:58:02 +00:00
parent 0ac2a79faa
commit db215b7e00
6 changed files with 143 additions and 99 deletions
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19
synapse/federation/federation_client.py
View file

@ -439,6 +439,25 @@ class FederationClient(FederationBase):
defer.returnValue(ret)
@defer.inlineCallbacks
def get_missing_events(self, destination, room_id, earliest_events,
latest_events, limit, min_depth):
content = yield self.transport_layer.get_missing_events(
destination, room_id, earliest_events, latest_events, limit,
min_depth,
)
events = [
self.event_from_pdu_json(e)
for e in content.get("events", [])
]
signed_events = yield self._check_sigs_and_hash_and_fetch(
destination, events, outlier=True
)
defer.returnValue(signed_events)
def event_from_pdu_json(self, pdu_json, outlier=False):
event = FrozenEvent(
pdu_json

148
synapse/federation/federation_server.py
View file

@ -142,7 +142,15 @@ class FederationServer(FederationBase):
if r[0]:
ret.append({})
else:
logger.exception(r[1])
failure = r[1]
logger.error(
"Failed to handle PDU",
exc_info=(
failure.type,
failure.value,
failure.getTracebackObject()
)
)
ret.append({"error": str(r[1].value)})
logger.debug("Returning: %s", str(ret))
@ -306,75 +314,17 @@ class FederationServer(FederationBase):
)
@defer.inlineCallbacks
def get_missing_events(self, origin, room_id, earliest_events,
latest_events, limit, min_depth):
limit = max(limit, 50)
min_depth = max(min_depth, 0)
missing_events = yield self.store.get_missing_events(
room_id=room_id,
earliest_events=earliest_events,
latest_events=latest_events,
limit=limit,
min_depth=min_depth,
@log_function
def on_get_missing_events(self, origin, room_id, earliest_events,
latest_events, limit, min_depth):
missing_events = yield self.handler.on_get_missing_events(
origin, room_id, earliest_events, latest_events, limit, min_depth
)
known_ids = {e.event_id for e in missing_events} | {earliest_events}
back_edges = {
e for e in missing_events
if {i for i, h in e.prev_events.items()} <= known_ids
}
decoded_auth_events = set()
state = {}
auth_events = set()
auth_and_state = {}
for event in back_edges:
state_pdus = yield self.handler.get_state_for_pdu(
origin, room_id, event.event_id,
do_auth=False,
)
state[event.event_id] = [s.event_id for s in state_pdus]
auth_and_state.update({
s.event_id: s for s in state_pdus
})
state_ids = {pdu.event_id for pdu in state_pdus}
prev_ids = {i for i, h in event.prev_events.items()}
partial_auth_chain = yield self.store.get_auth_chain(
state_ids | prev_ids, have_ids=decoded_auth_events.keys()
)
for p in partial_auth_chain:
p.signatures.update(
compute_event_signature(
p,
self.hs.hostname,
self.hs.config.signing_key[0]
)
)
auth_events.update(
a.event_id for a in partial_auth_chain
)
auth_and_state.update({
a.event_id: a for a in partial_auth_chain
})
time_now = self._clock.time_msec()
defer.returnValue({
"events": [ev.get_pdu_json(time_now) for ev in missing_events],
"state_for_events": state,
"auth_events": auth_events,
"event_map": {
k: ev.get_pdu_json(time_now)
for k, ev in auth_and_state.items()
},
})
@log_function
@ -403,7 +353,7 @@ class FederationServer(FederationBase):
@defer.inlineCallbacks
@log_function
def _handle_new_pdu(self, origin, pdu, max_recursion=10):
def _handle_new_pdu(self, origin, pdu, get_missing=True):
# We reprocess pdus when we have seen them only as outliers
existing = yield self._get_persisted_pdu(
origin, pdu.event_id, do_auth=False
@ -455,48 +405,50 @@ class FederationServer(FederationBase):
pdu.room_id, min_depth
)
prevs = {e_id for e_id, _ in pdu.prev_events}
seen = set(have_seen.keys())
if min_depth and pdu.depth < min_depth:
# This is so that we don't notify the user about this
# message, to work around the fact that some events will
# reference really really old events we really don't want to
# send to the clients.
pdu.internal_metadata.outlier = True
elif min_depth and pdu.depth > min_depth and max_recursion > 0:
for event_id, hashes in pdu.prev_events:
if event_id not in have_seen:
logger.debug(
"_handle_new_pdu requesting pdu %s",
event_id
elif min_depth and pdu.depth > min_depth:
if get_missing and prevs - seen:
latest_tuples = yield self.store.get_latest_events_in_room(
pdu.room_id
)
# We add the prev events that we have seen to the latest
# list to ensure the remote server doesn't give them to us
latest = set(e_id for e_id, _, _ in latest_tuples)
latest |= seen
missing_events = yield self.get_missing_events(
origin,
pdu.room_id,
earliest_events=list(latest),
latest_events=[pdu.event_id],
limit=10,
min_depth=min_depth,
)
for e in missing_events:
yield self._handle_new_pdu(
origin,
e,
get_missing=False
)
try:
new_pdu = yield self.federation_client.get_pdu(
[origin, pdu.origin],
event_id=event_id,
)
have_seen = yield self.store.have_events(
[ev for ev, _ in pdu.prev_events]
)
if new_pdu:
yield self._handle_new_pdu(
origin,
new_pdu,
max_recursion=max_recursion-1
)
logger.debug("Processed pdu %s", event_id)
else:
logger.warn("Failed to get PDU %s", event_id)
fetch_state = True
except:
# TODO(erikj): Do some more intelligent retries.
logger.exception("Failed to get PDU")
fetch_state = True
else:
prevs = {e_id for e_id, _ in pdu.prev_events}
seen = set(have_seen.keys())
if prevs - seen:
fetch_state = True
else:
fetch_state = True
prevs = {e_id for e_id, _ in pdu.prev_events}
seen = set(have_seen.keys())
if prevs - seen:
fetch_state = True
if fetch_state:
# We need to get the state at this event, since we haven't

2
synapse/federation/transaction_queue.py
View file

@ -287,7 +287,7 @@ class TransactionQueue(object):
code = 200
if response:
for e_id, r in getattr(response, "pdus", {}).items():
for e_id, r in response.get("pdus", {}).items():
if "error" in r:
logger.warn(
"Transaction returned error for %s: %s",

19
synapse/federation/transport/client.py
View file

@ -219,3 +219,22 @@ class TransportLayerClient(object):
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def get_missing_events(self, destination, room_id, earliest_events,
latest_events, limit, min_depth):
path = PREFIX + "/get_missing_events/%s" % (room_id,)
content = yield self.client.post_json(
destination=destination,
path=path,
data={
"limit": int(limit),
"min_depth": int(min_depth),
"earliest_events": earliest_events,
"latest_events": latest_events,
}
)
defer.returnValue(content)

31
synapse/federation/transport/server.py
View file

@ -234,6 +234,7 @@ class TransportLayerServer(object):
)
)
)
self.server.register_path(
"POST",
re.compile("^" + PREFIX + "/query_auth/([^/]*)/([^/]*)$"),
@ -245,6 +246,17 @@ class TransportLayerServer(object):
)
)
self.server.register_path(
"POST",
re.compile("^" + PREFIX + "/get_missing_events/([^/]*)/?$"),
self._with_authentication(
lambda origin, content, query, room_id:
self._get_missing_events(
origin, content, room_id,
)
)
)
@defer.inlineCallbacks
@log_function
def _on_send_request(self, origin, content, query, transaction_id):
@ -344,3 +356,22 @@ class TransportLayerServer(object):
)
defer.returnValue((200, new_content))
@defer.inlineCallbacks
@log_function
def _get_missing_events(self, origin, content, room_id):
limit = int(content.get("limit", 10))
min_depth = int(content.get("min_depth", 0))
earliest_events = content.get("earliest_events", [])
latest_events = content.get("latest_events", [])
content = yield self.request_handler.on_get_missing_events(
origin,
room_id=room_id,
earliest_events=earliest_events,
latest_events=latest_events,
min_depth=min_depth,
limit=limit,
)
defer.returnValue((200, content))

23
synapse/handlers/federation.py
View file

@ -789,6 +789,29 @@ class FederationHandler(BaseHandler):
defer.returnValue(ret)
@defer.inlineCallbacks
def on_get_missing_events(self, origin, room_id, earliest_events,
latest_events, limit, min_depth):
in_room = yield self.auth.check_host_in_room(
room_id,
origin
)
if not in_room:
raise AuthError(403, "Host not in room.")
limit = min(limit, 20)
min_depth = max(min_depth, 0)
missing_events = yield self.store.get_missing_events(
room_id=room_id,
earliest_events=earliest_events,
latest_events=latest_events,
limit=limit,
min_depth=min_depth,
)
defer.returnValue(missing_events)
@defer.inlineCallbacks
@log_function
def do_auth(self, origin, event, context, auth_events):