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Add a 'backfill room' button

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This commit is contained in:
Erik Johnston 2014-08-19 14:20:03 +01:00
parent 598a1d8ff9
commit 75b6d982a0
6 changed files with 81 additions and 25 deletions
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22
synapse/federation/handler.py
View File

@ -74,10 +74,18 @@ class FederationEventHandler(object):
@log_function
@defer.inlineCallbacks
def backfill(self, room_id, limit):
# TODO: Work out which destinations to ask for backfill
# self.replication_layer.backfill(dest, room_id, limit)
pass
def backfill(self, dest, room_id, limit):
pdus = yield self.replication_layer.backfill(dest, room_id, limit)
if not pdus:
defer.returnValue([])
events = [
self.pdu_codec.event_from_pdu(pdu)
for pdu in pdus
]
defer.returnValue(events)
@log_function
def get_state_for_room(self, destination, room_id):
@ -87,7 +95,7 @@ class FederationEventHandler(object):
@log_function
@defer.inlineCallbacks
def on_receive_pdu(self, pdu):
def on_receive_pdu(self, pdu, backfilled):
""" Called by the ReplicationLayer when we have a new pdu. We need to
do auth checks and put it throught the StateHandler.
"""
@ -95,7 +103,7 @@ class FederationEventHandler(object):
try:
with (yield self.lock_manager.lock(pdu.context)):
if event.is_state:
if event.is_state and not backfilled:
is_new_state = yield self.state_handler.handle_new_state(
pdu
)
@ -104,7 +112,7 @@ class FederationEventHandler(object):
else:
is_new_state = False
yield self.event_handler.on_receive(event, is_new_state)
yield self.event_handler.on_receive(event, is_new_state, backfilled)
except AuthError:
# TODO: Implement something in federation that allows us to

9
synapse/federation/replication.py
View File

@ -208,7 +208,7 @@ class ReplicationLayer(object):
pdus = [Pdu(outlier=False, **p) for p in transaction.pdus]
for pdu in pdus:
yield self._handle_new_pdu(pdu)
yield self._handle_new_pdu(pdu, backfilled=True)
defer.returnValue(pdus)
@ -415,7 +415,7 @@ class ReplicationLayer(object):
@defer.inlineCallbacks
@log_function
def _handle_new_pdu(self, pdu):
def _handle_new_pdu(self, pdu, backfilled=False):
# We reprocess pdus when we have seen them only as outliers
existing = yield self._get_persisted_pdu(pdu.pdu_id, pdu.origin)
@ -451,7 +451,10 @@ class ReplicationLayer(object):
# Persist the Pdu, but don't mark it as processed yet.
yield self.pdu_actions.persist_received(pdu)
ret = yield self.handler.on_receive_pdu(pdu)
if not backfilled:
ret = yield self.handler.on_receive_pdu(pdu, backfilled=backfilled)
else:
ret = None
yield self.pdu_actions.mark_as_processed(pdu)

21
synapse/handlers/federation.py
View File

@ -35,7 +35,7 @@ class FederationHandler(BaseHandler):
@log_function
@defer.inlineCallbacks
def on_receive(self, event, is_new_state):
def on_receive(self, event, is_new_state, backfilled):
if hasattr(event, "state_key") and not is_new_state:
logger.debug("Ignoring old state.")
return
@ -70,6 +70,21 @@ class FederationHandler(BaseHandler):
else:
with (yield self.room_lock.lock(event.room_id)):
store_id = yield self.store.persist_event(event)
store_id = yield self.store.persist_event(event, backfilled)
yield self.notifier.on_new_room_event(event, store_id)
if not backfilled:
yield self.notifier.on_new_room_event(event, store_id)
@log_function
@defer.inlineCallbacks
def backfill(self, dest, room_id, limit):
events = yield self.hs.get_federation().backfill(dest, room_id, limit)
for event in events:
try:
yield self.store.persist_event(event, backfilled=True)
except:
logger.debug("Failed to persiste event: %s", event)
defer.returnValue(events)

16
synapse/rest/room.py
View File

@ -383,6 +383,21 @@ class RoomMessageListRestServlet(RestServlet):
defer.returnValue((200, msgs))
class RoomTriggerBackfill(RestServlet):
PATTERN = client_path_pattern("/rooms/(?P<room_id>[^/]*)/backfill$")
@defer.inlineCallbacks
def on_GET(self, request, room_id):
remote_server = urllib.unquote(request.args["remote"][0])
room_id = urllib.unquote(room_id)
limit = int(request.args["limit"][0])
handler = self.handlers.federation_handler
events = yield handler.backfill(remote_server, room_id, limit)
res = [event.get_dict() for event in events]
defer.returnValue((200, res))
def _parse_json(request):
try:
content = json.loads(request.content.read())
@ -403,3 +418,4 @@ def register_servlets(hs, http_server):
RoomMemberListRestServlet(hs).register(http_server)
RoomMessageListRestServlet(hs).register(http_server)
JoinRoomAliasServlet(hs).register(http_server)
RoomTriggerBackfill(hs).register(http_server)

22
synapse/storage/__init__.py
View File

@ -20,6 +20,8 @@ from synapse.api.events.room import (
RoomConfigEvent, RoomNameEvent,
)
from synapse.util.logutils import log_function
from .directory import DirectoryStore
from .feedback import FeedbackStore
from .presence import PresenceStore
@ -32,9 +34,13 @@ from .pdu import StatePduStore, PduStore
from .transactions import TransactionStore
import json
import logging
import os
logger = logging.getLogger(__name__)
class DataStore(RoomMemberStore, RoomStore,
RegistrationStore, StreamStore, ProfileStore, FeedbackStore,
PresenceStore, PduStore, StatePduStore, TransactionStore,
@ -49,6 +55,7 @@ class DataStore(RoomMemberStore, RoomStore,
self.min_token = None
@defer.inlineCallbacks
@log_function
def persist_event(self, event, backfilled=False):
if event.type == RoomMemberEvent.TYPE:
yield self._store_room_member(event)
@ -83,6 +90,7 @@ class DataStore(RoomMemberStore, RoomStore,
defer.returnValue(event)
@defer.inlineCallbacks
@log_function
def _store_event(self, event, backfilled):
# FIXME (erikj): This should be removed when we start amalgamating
# event and pdu storage
@ -101,7 +109,7 @@ class DataStore(RoomMemberStore, RoomStore,
if not self.min_token_deferred.called:
yield self.min_token_deferred
self.min_token -= 1
vals["token_ordering"] = self.min_token
vals["stream_ordering"] = self.min_token
unrec = {
k: v
@ -110,7 +118,11 @@ class DataStore(RoomMemberStore, RoomStore,
}
vals["unrecognized_keys"] = json.dumps(unrec)
yield self._simple_insert("events", vals)
try:
yield self._simple_insert("events", vals)
except:
logger.exception("Failed to persist, probably duplicate")
return
if not backfilled and hasattr(event, "state_key"):
vals = {
@ -161,10 +173,12 @@ class DataStore(RoomMemberStore, RoomStore,
def _get_min_token(self):
row = yield self._execute(
None,
"SELECT MIN(token_ordering) FROM events"
"SELECT MIN(stream_ordering) FROM events"
)
self.min_token = rows[0][0] if rows and rows[0] else 0
self.min_token = min(row[0][0], -1) if row and row[0] else -1
logger.debug("min_token is: %s", self.min_token)
defer.returnValue(self.min_token)

16
synapse/storage/pdu.py
View File

@ -13,6 +13,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from ._base import SQLBaseStore, Table, JoinHelper
from synapse.util.logutils import log_function
@ -319,6 +321,7 @@ class PduStore(SQLBaseStore):
return [(row[0], row[1], row[2]) for row in results]
@defer.inlineCallbacks
def get_oldest_pdus_in_context(self, context):
"""Get a list of Pdus that we haven't backfilled beyond yet (and haven't
seen). This list is used when we want to backfill backwards and is the
@ -331,17 +334,14 @@ class PduStore(SQLBaseStore):
Returns:
list: A list of PduIdTuple.
"""
return self._db_pool.runInteraction(
self._get_oldest_pdus_in_context, context
)
def _get_oldest_pdus_in_context(self, txn, context):
txn.execute(
results = yield self._execute(
None,
"SELECT pdu_id, origin FROM %(back)s WHERE context = ?"
% {"back": PduBackwardExtremitiesTable.table_name, },
(context,)
context
)
return [PduIdTuple(i, o) for i, o in txn.fetchall()]
defer.returnValue([PduIdTuple(i, o) for i, o in results])
def is_pdu_new(self, pdu_id, origin, context, depth):
"""For a given Pdu, try and figure out if it's 'new', i.e., if it's