diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index c15c8c1ed5..2c72beff2e 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -751,9 +751,19 @@ class FederationHandler(BaseHandler):
curr_state = yield self.state_handler.get_current_state(room_id)
def get_domains_from_state(state):
+ """Get joined domains from state
+
+ Args:
+ state (dict[tuple, FrozenEvent]): State map from type/state
+ key to event.
+
+ Returns:
+ list[tuple[str, int]]: Returns a list of servers with the
+ lowest depth of their joins. Sorted by lowest depth first.
+ """
joined_users = [
(state_key, int(event.depth))
- for (e_type, state_key), event in state.items()
+ for (e_type, state_key), event in state.iteritems()
if e_type == EventTypes.Member
and event.membership == Membership.JOIN
]
@@ -770,7 +780,7 @@ class FederationHandler(BaseHandler):
except Exception:
pass
- return sorted(joined_domains.items(), key=lambda d: d[1])
+ return sorted(joined_domains.iteritems(), key=lambda d: d[1])
curr_domains = get_domains_from_state(curr_state)
@@ -787,7 +797,7 @@ class FederationHandler(BaseHandler):
yield self.backfill(
dom, room_id,
limit=100,
- extremities=[e for e in extremities.keys()]
+ extremities=extremities,
)
# If this succeeded then we probably already have the
# appropriate stuff.
@@ -833,7 +843,7 @@ class FederationHandler(BaseHandler):
tried_domains = set(likely_domains)
tried_domains.add(self.server_name)
- event_ids = list(extremities.keys())
+ event_ids = list(extremities.iterkeys())
logger.debug("calling resolve_state_groups in _maybe_backfill")
resolve = logcontext.preserve_fn(
@@ -843,31 +853,34 @@ class FederationHandler(BaseHandler):
[resolve(room_id, [e]) for e in event_ids],
consumeErrors=True,
))
+
+ # dict[str, dict[tuple, str]], a map from event_id to state map of
+ # event_ids.
states = dict(zip(event_ids, [s.state for s in states]))
state_map = yield self.store.get_events(
- [e_id for ids in states.values() for e_id in ids],
+ [e_id for ids in states.itervalues() for e_id in ids.itervalues()],
get_prev_content=False
)
states = {
key: {
k: state_map[e_id]
- for k, e_id in state_dict.items()
+ for k, e_id in state_dict.iteritems()
if e_id in state_map
- } for key, state_dict in states.items()
+ } for key, state_dict in states.iteritems()
}
for e_id, _ in sorted_extremeties_tuple:
likely_domains = get_domains_from_state(states[e_id])
success = yield try_backfill([
- dom for dom in likely_domains
+ dom for dom, _ in likely_domains
if dom not in tried_domains
])
if success:
defer.returnValue(True)
- tried_domains.update(likely_domains)
+ tried_domains.update(dom for dom, _ in likely_domains)
defer.returnValue(False)
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