diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index b06387051c..c6ed720166 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -314,6 +314,40 @@ class FederationClient(FederationBase):
Deferred: Results in a list of PDUs.
"""
+ try:
+ # First we try and ask for just the IDs, as thats far quicker if
+ # we have most of the state and auth_chain already.
+ # However, this may 404 if the other side has an old synapse.
+ result = yield self.transport_layer.get_room_state_ids(
+ destination, room_id, event_id=event_id,
+ )
+
+ state_event_ids = result["pdu_ids"]
+ auth_event_ids = result.get("auth_chain_ids", [])
+
+ fetched_events, failed_to_fetch = yield self.get_events(
+ [destination], room_id, set(state_event_ids + auth_event_ids)
+ )
+
+ if failed_to_fetch:
+ logger.warn("Failed to get %r", failed_to_fetch)
+
+ event_map = {
+ ev.event_id: ev for ev in fetched_events
+ }
+
+ pdus = [event_map[e_id] for e_id in state_event_ids]
+ auth_chain = [event_map[e_id] for e_id in auth_event_ids]
+
+ auth_chain.sort(key=lambda e: e.depth)
+
+ defer.returnValue((pdus, auth_chain))
+ except HttpResponseException as e:
+ if e.code == 404:
+ logger.info("Failed to use get_room_state_ids API, falling back")
+ else:
+ raise e
+
result = yield self.transport_layer.get_room_state(
destination, room_id, event_id=event_id,
)
@@ -340,6 +374,67 @@ class FederationClient(FederationBase):
defer.returnValue((signed_pdus, signed_auth))
@defer.inlineCallbacks
+ def get_events(self, destinations, room_id, event_ids, return_local=True):
+ """Fetch events from some remote destinations, checking if we already
+ have them.
+
+ Args:
+ destinations (list)
+ room_id (str)
+ event_ids (list)
+ return_local (bool): Whether to include events we already have in
+ the DB in the returned list of events
+
+ Returns:
+ Deferred: A deferred resolving to a 2-tuple where the first is a list of
+ events and the second is a list of event ids that we failed to fetch.
+ """
+ if return_local:
+ seen_events = yield self.store.get_events(event_ids)
+ signed_events = seen_events.values()
+ else:
+ seen_events = yield self.store.have_events(event_ids)
+ signed_events = []
+
+ failed_to_fetch = set()
+
+ missing_events = set(event_ids)
+ for k in seen_events:
+ missing_events.discard(k)
+
+ if not missing_events:
+ defer.returnValue((signed_events, failed_to_fetch))
+
+ def random_server_list():
+ srvs = list(destinations)
+ random.shuffle(srvs)
+ return srvs
+
+ batch_size = 20
+ missing_events = list(missing_events)
+ for i in xrange(0, len(missing_events), batch_size):
+ batch = set(missing_events[i:i + batch_size])
+
+ deferreds = [
+ self.get_pdu(
+ destinations=random_server_list(),
+ event_id=e_id,
+ )
+ for e_id in batch
+ ]
+
+ res = yield defer.DeferredList(deferreds, consumeErrors=True)
+ for success, result in res:
+ if success:
+ signed_events.append(result)
+ batch.discard(result.event_id)
+
+ # We removed all events we successfully fetched from `batch`
+ failed_to_fetch.update(batch)
+
+ defer.returnValue((signed_events, failed_to_fetch))
+
+ @defer.inlineCallbacks
@log_function
def get_event_auth(self, destination, room_id, event_id):
res = yield self.transport_layer.get_event_auth(
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py
index 612d274bdb..aba19639c7 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -215,6 +215,27 @@ class FederationServer(FederationBase):
defer.returnValue((200, resp))
@defer.inlineCallbacks
+ def on_state_ids_request(self, origin, room_id, event_id):
+ if not event_id:
+ raise NotImplementedError("Specify an event")
+
+ in_room = yield self.auth.check_host_in_room(room_id, origin)
+ if not in_room:
+ raise AuthError(403, "Host not in room.")
+
+ pdus = yield self.handler.get_state_for_pdu(
+ room_id, event_id,
+ )
+ auth_chain = yield self.store.get_auth_chain(
+ [pdu.event_id for pdu in pdus]
+ )
+
+ defer.returnValue((200, {
+ "pdu_ids": [pdu.event_id for pdu in pdus],
+ "auth_chain_ids": [pdu.event_id for pdu in auth_chain],
+ }))
+
+ @defer.inlineCallbacks
def _on_context_state_request_compute(self, room_id, event_id):
pdus = yield self.handler.get_state_for_pdu(
room_id, event_id,
@@ -372,27 +393,9 @@ class FederationServer(FederationBase):
(200, send_content)
)
- @defer.inlineCallbacks
@log_function
def on_query_client_keys(self, origin, content):
- query = []
- for user_id, device_ids in content.get("device_keys", {}).items():
- if not device_ids:
- query.append((user_id, None))
- else:
- for device_id in device_ids:
- query.append((user_id, device_id))
-
- results = yield self.store.get_e2e_device_keys(query)
-
- json_result = {}
- for user_id, device_keys in results.items():
- for device_id, json_bytes in device_keys.items():
- json_result.setdefault(user_id, {})[device_id] = json.loads(
- json_bytes
- )
-
- defer.returnValue({"device_keys": json_result})
+ return self.on_query_request("client_keys", content)
@defer.inlineCallbacks
@log_function
@@ -602,7 +605,7 @@ class FederationServer(FederationBase):
origin, pdu.room_id, pdu.event_id,
)
except:
- logger.warn("Failed to get state for event: %s", pdu.event_id)
+ logger.exception("Failed to get state for event: %s", pdu.event_id)
yield self.handler.on_receive_pdu(
origin,
diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index ebb698e278..3d088e43cb 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -55,6 +55,28 @@ class TransportLayerClient(object):
)
@log_function
+ def get_room_state_ids(self, destination, room_id, event_id):
+ """ Requests all state for a given room from the given server at the
+ given event. Returns the state's event_id's
+
+ Args:
+ destination (str): The host name of the remote home server we want
+ to get the state from.
+ context (str): The name of the context we want the state of
+ event_id (str): The event we want the context at.
+
+ Returns:
+ Deferred: Results in a dict received from the remote homeserver.
+ """
+ logger.debug("get_room_state_ids dest=%s, room=%s",
+ destination, room_id)
+
+ path = PREFIX + "/state_ids/%s/" % room_id
+ return self.client.get_json(
+ destination, path=path, args={"event_id": event_id},
+ )
+
+ @log_function
def get_event(self, destination, event_id, timeout=None):
""" Requests the pdu with give id and origin from the given server.
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 26fa88ae84..0bc6e0801d 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -271,6 +271,17 @@ class FederationStateServlet(BaseFederationServlet):
)
+class FederationStateIdsServlet(BaseFederationServlet):
+ PATH = "/state_ids/(?P<room_id>[^/]*)/"
+
+ def on_GET(self, origin, content, query, room_id):
+ return self.handler.on_state_ids_request(
+ origin,
+ room_id,
+ query.get("event_id", [None])[0],
+ )
+
+
class FederationBackfillServlet(BaseFederationServlet):
PATH = "/backfill/(?P<context>[^/]*)/"
@@ -367,10 +378,8 @@ class FederationThirdPartyInviteExchangeServlet(BaseFederationServlet):
class FederationClientKeysQueryServlet(BaseFederationServlet):
PATH = "/user/keys/query"
- @defer.inlineCallbacks
def on_POST(self, origin, content, query):
- response = yield self.handler.on_query_client_keys(origin, content)
- defer.returnValue((200, response))
+ return self.handler.on_query_client_keys(origin, content)
class FederationClientKeysClaimServlet(BaseFederationServlet):
@@ -538,6 +547,7 @@ SERVLET_CLASSES = (
FederationPullServlet,
FederationEventServlet,
FederationStateServlet,
+ FederationStateIdsServlet,
FederationBackfillServlet,
FederationQueryServlet,
FederationMakeJoinServlet,
diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py
index f4bf159bb5..8d630c6b1a 100644
--- a/synapse/handlers/device.py
+++ b/synapse/handlers/device.py
@@ -29,7 +29,7 @@ class DeviceHandler(BaseHandler):
@defer.inlineCallbacks
def check_device_registered(self, user_id, device_id,
- initial_device_display_name):
+ initial_device_display_name=None):
"""
If the given device has not been registered, register it with the
supplied display name.
diff --git a/synapse/handlers/e2e_keys.py b/synapse/handlers/e2e_keys.py
new file mode 100644
index 0000000000..2c7bfd91ed
--- /dev/null
+++ b/synapse/handlers/e2e_keys.py
@@ -0,0 +1,139 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 OpenMarket Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import collections
+import json
+import logging
+
+from twisted.internet import defer
+
+from synapse.api import errors
+import synapse.types
+
+logger = logging.getLogger(__name__)
+
+
+class E2eKeysHandler(object):
+ def __init__(self, hs):
+ self.store = hs.get_datastore()
+ self.federation = hs.get_replication_layer()
+ self.is_mine_id = hs.is_mine_id
+ self.server_name = hs.hostname
+
+ # doesn't really work as part of the generic query API, because the
+ # query request requires an object POST, but we abuse the
+ # "query handler" interface.
+ self.federation.register_query_handler(
+ "client_keys", self.on_federation_query_client_keys
+ )
+
+ @defer.inlineCallbacks
+ def query_devices(self, query_body):
+ """ Handle a device key query from a client
+
+ {
+ "device_keys": {
+ "<user_id>": ["<device_id>"]
+ }
+ }
+ ->
+ {
+ "device_keys": {
+ "<user_id>": {
+ "<device_id>": {
+ ...
+ }
+ }
+ }
+ }
+ """
+ device_keys_query = query_body.get("device_keys", {})
+
+ # separate users by domain.
+ # make a map from domain to user_id to device_ids
+ queries_by_domain = collections.defaultdict(dict)
+ for user_id, device_ids in device_keys_query.items():
+ user = synapse.types.UserID.from_string(user_id)
+ queries_by_domain[user.domain][user_id] = device_ids
+
+ # do the queries
+ # TODO: do these in parallel
+ results = {}
+ for destination, destination_query in queries_by_domain.items():
+ if destination == self.server_name:
+ res = yield self.query_local_devices(destination_query)
+ else:
+ res = yield self.federation.query_client_keys(
+ destination, {"device_keys": destination_query}
+ )
+ res = res["device_keys"]
+ for user_id, keys in res.items():
+ if user_id in destination_query:
+ results[user_id] = keys
+
+ defer.returnValue((200, {"device_keys": results}))
+
+ @defer.inlineCallbacks
+ def query_local_devices(self, query):
+ """Get E2E device keys for local users
+
+ Args:
+ query (dict[string, list[string]|None): map from user_id to a list
+ of devices to query (None for all devices)
+
+ Returns:
+ defer.Deferred: (resolves to dict[string, dict[string, dict]]):
+ map from user_id -> device_id -> device details
+ """
+ local_query = []
+
+ result_dict = {}
+ for user_id, device_ids in query.items():
+ if not self.is_mine_id(user_id):
+ logger.warning("Request for keys for non-local user %s",
+ user_id)
+ raise errors.SynapseError(400, "Not a user here")
+
+ if not device_ids:
+ local_query.append((user_id, None))
+ else:
+ for device_id in device_ids:
+ local_query.append((user_id, device_id))
+
+ # make sure that each queried user appears in the result dict
+ result_dict[user_id] = {}
+
+ results = yield self.store.get_e2e_device_keys(local_query)
+
+ # Build the result structure, un-jsonify the results, and add the
+ # "unsigned" section
+ for user_id, device_keys in results.items():
+ for device_id, device_info in device_keys.items():
+ r = json.loads(device_info["key_json"])
+ r["unsigned"] = {}
+ display_name = device_info["device_display_name"]
+ if display_name is not None:
+ r["unsigned"]["device_display_name"] = display_name
+ result_dict[user_id][device_id] = r
+
+ defer.returnValue(result_dict)
+
+ @defer.inlineCallbacks
+ def on_federation_query_client_keys(self, query_body):
+ """ Handle a device key query from a federated server
+ """
+ device_keys_query = query_body.get("device_keys", {})
+ res = yield self.query_local_devices(device_keys_query)
+ defer.returnValue({"device_keys": res})
diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py
index dc1d4d8fc6..c5ff16adf3 100644
--- a/synapse/rest/client/v2_alpha/keys.py
+++ b/synapse/rest/client/v2_alpha/keys.py
@@ -130,9 +130,7 @@ class KeyUploadServlet(RestServlet):
# old access_token without an associated device_id. Either way, we
# need to double-check the device is registered to avoid ending up with
# keys without a corresponding device.
- self.device_handler.check_device_registered(
- user_id, device_id, "unknown device"
- )
+ self.device_handler.check_device_registered(user_id, device_id)
result = yield self.store.count_e2e_one_time_keys(user_id, device_id)
defer.returnValue((200, {"one_time_key_counts": result}))
@@ -186,17 +184,19 @@ class KeyQueryServlet(RestServlet):
)
def __init__(self, hs):
+ """
+ Args:
+ hs (synapse.server.HomeServer):
+ """
super(KeyQueryServlet, self).__init__()
- self.store = hs.get_datastore()
self.auth = hs.get_auth()
- self.federation = hs.get_replication_layer()
- self.is_mine = hs.is_mine
+ self.e2e_keys_handler = hs.get_e2e_keys_handler()
@defer.inlineCallbacks
def on_POST(self, request, user_id, device_id):
yield self.auth.get_user_by_req(request)
body = parse_json_object_from_request(request)
- result = yield self.handle_request(body)
+ result = yield self.e2e_keys_handler.query_devices(body)
defer.returnValue(result)
@defer.inlineCallbacks
@@ -205,45 +205,11 @@ class KeyQueryServlet(RestServlet):
auth_user_id = requester.user.to_string()
user_id = user_id if user_id else auth_user_id
device_ids = [device_id] if device_id else []
- result = yield self.handle_request(
+ result = yield self.e2e_keys_handler.query_devices(
{"device_keys": {user_id: device_ids}}
)
defer.returnValue(result)
- @defer.inlineCallbacks
- def handle_request(self, body):
- local_query = []
- remote_queries = {}
- for user_id, device_ids in body.get("device_keys", {}).items():
- user = UserID.from_string(user_id)
- if self.is_mine(user):
- if not device_ids:
- local_query.append((user_id, None))
- else:
- for device_id in device_ids:
- local_query.append((user_id, device_id))
- else:
- remote_queries.setdefault(user.domain, {})[user_id] = list(
- device_ids
- )
- results = yield self.store.get_e2e_device_keys(local_query)
-
- json_result = {}
- for user_id, device_keys in results.items():
- for device_id, json_bytes in device_keys.items():
- json_result.setdefault(user_id, {})[device_id] = json.loads(
- json_bytes
- )
-
- for destination, device_keys in remote_queries.items():
- remote_result = yield self.federation.query_client_keys(
- destination, {"device_keys": device_keys}
- )
- for user_id, keys in remote_result["device_keys"].items():
- if user_id in device_keys:
- json_result[user_id] = keys
- defer.returnValue((200, {"device_keys": json_result}))
-
class OneTimeKeyServlet(RestServlet):
"""
diff --git a/synapse/server.py b/synapse/server.py
index e8b166990d..6bb4988309 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -19,39 +19,38 @@
# partial one for unit test mocking.
# Imports required for the default HomeServer() implementation
-from twisted.web.client import BrowserLikePolicyForHTTPS
+import logging
+
from twisted.enterprise import adbapi
+from twisted.web.client import BrowserLikePolicyForHTTPS
-from synapse.appservice.scheduler import ApplicationServiceScheduler
+from synapse.api.auth import Auth
+from synapse.api.filtering import Filtering
+from synapse.api.ratelimiting import Ratelimiter
from synapse.appservice.api import ApplicationServiceApi
+from synapse.appservice.scheduler import ApplicationServiceScheduler
+from synapse.crypto.keyring import Keyring
+from synapse.events.builder import EventBuilderFactory
from synapse.federation import initialize_http_replication
-from synapse.handlers.device import DeviceHandler
-from synapse.http.client import SimpleHttpClient, InsecureInterceptableContextFactory
-from synapse.notifier import Notifier
-from synapse.api.auth import Auth
from synapse.handlers import Handlers
+from synapse.handlers.appservice import ApplicationServicesHandler
+from synapse.handlers.auth import AuthHandler
+from synapse.handlers.device import DeviceHandler
+from synapse.handlers.e2e_keys import E2eKeysHandler
from synapse.handlers.presence import PresenceHandler
+from synapse.handlers.room import RoomListHandler
from synapse.handlers.sync import SyncHandler
from synapse.handlers.typing import TypingHandler
-from synapse.handlers.room import RoomListHandler
-from synapse.handlers.auth import AuthHandler
-from synapse.handlers.appservice import ApplicationServicesHandler
+from synapse.http.client import SimpleHttpClient, InsecureInterceptableContextFactory
+from synapse.http.matrixfederationclient import MatrixFederationHttpClient
+from synapse.notifier import Notifier
+from synapse.push.pusherpool import PusherPool
+from synapse.rest.media.v1.media_repository import MediaRepository
from synapse.state import StateHandler
from synapse.storage import DataStore
+from synapse.streams.events import EventSources
from synapse.util import Clock
from synapse.util.distributor import Distributor
-from synapse.streams.events import EventSources
-from synapse.api.ratelimiting import Ratelimiter
-from synapse.crypto.keyring import Keyring
-from synapse.push.pusherpool import PusherPool
-from synapse.events.builder import EventBuilderFactory
-from synapse.api.filtering import Filtering
-from synapse.rest.media.v1.media_repository import MediaRepository
-
-from synapse.http.matrixfederationclient import MatrixFederationHttpClient
-
-import logging
-
logger = logging.getLogger(__name__)
@@ -94,6 +93,7 @@ class HomeServer(object):
'room_list_handler',
'auth_handler',
'device_handler',
+ 'e2e_keys_handler',
'application_service_api',
'application_service_scheduler',
'application_service_handler',
@@ -202,6 +202,9 @@ class HomeServer(object):
def build_device_handler(self):
return DeviceHandler(self)
+ def build_e2e_keys_handler(self):
+ return E2eKeysHandler(self)
+
def build_application_service_api(self):
return ApplicationServiceApi(self)
diff --git a/synapse/server.pyi b/synapse/server.pyi
index 902f725c06..c0aa868c4f 100644
--- a/synapse/server.pyi
+++ b/synapse/server.pyi
@@ -1,6 +1,7 @@
import synapse.handlers
import synapse.handlers.auth
import synapse.handlers.device
+import synapse.handlers.e2e_keys
import synapse.storage
import synapse.state
@@ -14,6 +15,9 @@ class HomeServer(object):
def get_device_handler(self) -> synapse.handlers.device.DeviceHandler:
pass
+ def get_e2e_keys_handler(self) -> synapse.handlers.e2e_keys.E2eKeysHandler:
+ pass
+
def get_handlers(self) -> synapse.handlers.Handlers:
pass
diff --git a/synapse/storage/end_to_end_keys.py b/synapse/storage/end_to_end_keys.py
index 62b7790e91..385d607056 100644
--- a/synapse/storage/end_to_end_keys.py
+++ b/synapse/storage/end_to_end_keys.py
@@ -12,6 +12,7 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
+import collections
import twisted.internet.defer
@@ -38,24 +39,49 @@ class EndToEndKeyStore(SQLBaseStore):
query_list(list): List of pairs of user_ids and device_ids.
Returns:
Dict mapping from user-id to dict mapping from device_id to
- key json byte strings.
+ dict containing "key_json", "device_display_name".
"""
- def _get_e2e_device_keys(txn):
- result = {}
- for user_id, device_id in query_list:
- user_result = result.setdefault(user_id, {})
- keyvalues = {"user_id": user_id}
- if device_id:
- keyvalues["device_id"] = device_id
- rows = self._simple_select_list_txn(
- txn, table="e2e_device_keys_json",
- keyvalues=keyvalues,
- retcols=["device_id", "key_json"]
- )
- for row in rows:
- user_result[row["device_id"]] = row["key_json"]
- return result
- return self.runInteraction("get_e2e_device_keys", _get_e2e_device_keys)
+ if not query_list:
+ return {}
+
+ return self.runInteraction(
+ "get_e2e_device_keys", self._get_e2e_device_keys_txn, query_list
+ )
+
+ def _get_e2e_device_keys_txn(self, txn, query_list):
+ query_clauses = []
+ query_params = []
+
+ for (user_id, device_id) in query_list:
+ query_clause = "k.user_id = ?"
+ query_params.append(user_id)
+
+ if device_id:
+ query_clause += " AND k.device_id = ?"
+ query_params.append(device_id)
+
+ query_clauses.append(query_clause)
+
+ sql = (
+ "SELECT k.user_id, k.device_id, "
+ " d.display_name AS device_display_name, "
+ " k.key_json"
+ " FROM e2e_device_keys_json k"
+ " LEFT JOIN devices d ON d.user_id = k.user_id"
+ " AND d.device_id = k.device_id"
+ " WHERE %s"
+ ) % (
+ " OR ".join("(" + q + ")" for q in query_clauses)
+ )
+
+ txn.execute(sql, query_params)
+ rows = self.cursor_to_dict(txn)
+
+ result = collections.defaultdict(dict)
+ for row in rows:
+ result[row["user_id"]][row["device_id"]] = row
+
+ return result
def add_e2e_one_time_keys(self, user_id, device_id, time_now, key_list):
def _add_e2e_one_time_keys(txn):
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index c63ca36df6..4664cfe6d9 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -26,7 +26,7 @@ from synapse.api.constants import EventTypes
from synapse.api.errors import SynapseError
from canonicaljson import encode_canonical_json
-from collections import deque, namedtuple
+from collections import deque, namedtuple, OrderedDict
import synapse
import synapse.metrics
@@ -403,6 +403,23 @@ class EventsStore(SQLBaseStore):
and the rejections table. Things reading from those table will need to check
whether the event was rejected.
"""
+ # Ensure that we don't have the same event twice.
+ # Pick the earliest non-outlier if there is one, else the earliest one.
+ new_events_and_contexts = OrderedDict()
+ for event, context in events_and_contexts:
+ prev_event_context = new_events_and_contexts.get(event.event_id)
+ if prev_event_context:
+ if not event.internal_metadata.is_outlier():
+ if prev_event_context[0].internal_metadata.is_outlier():
+ # To ensure correct ordering we pop, as OrderedDict is
+ # ordered by first insertion.
+ new_events_and_contexts.pop(event.event_id, None)
+ new_events_and_contexts[event.event_id] = (event, context)
+ else:
+ new_events_and_contexts[event.event_id] = (event, context)
+
+ events_and_contexts = new_events_and_contexts.values()
+
depth_updates = {}
for event, context in events_and_contexts:
# Remove the any existing cache entries for the event_ids
@@ -433,8 +450,6 @@ class EventsStore(SQLBaseStore):
for event_id, outlier in txn.fetchall()
}
- # Remove the events that we've seen before.
- event_map = {}
to_remove = set()
for event, context in events_and_contexts:
if context.rejected:
@@ -445,23 +460,6 @@ class EventsStore(SQLBaseStore):
to_remove.add(event)
continue
- # Handle the case of the list including the same event multiple
- # times. The tricky thing here is when they differ by whether
- # they are an outlier.
- if event.event_id in event_map:
- other = event_map[event.event_id]
-
- if not other.internal_metadata.is_outlier():
- to_remove.add(event)
- continue
- elif not event.internal_metadata.is_outlier():
- to_remove.add(event)
- continue
- else:
- to_remove.add(other)
-
- event_map[event.event_id] = event
-
if event.event_id not in have_persisted:
continue
diff --git a/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql b/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql
index 140f2b63e0..aa4a3b9f2f 100644
--- a/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql
+++ b/synapse/storage/schema/delta/33/devices_for_e2e_keys.sql
@@ -16,4 +16,4 @@
-- make sure that we have a device record for each set of E2E keys, so that the
-- user can delete them if they like.
INSERT INTO devices
- SELECT user_id, device_id, 'unknown device' FROM e2e_device_keys_json;
+ SELECT user_id, device_id, NULL FROM e2e_device_keys_json;
diff --git a/synapse/storage/schema/delta/33/devices_for_e2e_keys_clear_unknown_device.sql b/synapse/storage/schema/delta/33/devices_for_e2e_keys_clear_unknown_device.sql
new file mode 100644
index 0000000000..6671573398
--- /dev/null
+++ b/synapse/storage/schema/delta/33/devices_for_e2e_keys_clear_unknown_device.sql
@@ -0,0 +1,20 @@
+/* Copyright 2016 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- a previous version of the "devices_for_e2e_keys" delta set all the device
+-- names to "unknown device". This wasn't terribly helpful
+UPDATE devices
+ SET display_name = NULL
+ WHERE display_name = 'unknown device';
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