def _get_filtered_current_state_ids_txn(txn):
results = {}
sql = """SELECT type, state_key, event_id FROM current_state_events
WHERE room_id = ? %s"""
# Turns out that postgres doesn't like doing a list of OR's and
# is about 1000x slower, so we just issue a query for each specific
# type seperately.
if types:
clause_to_args = [("AND type = ? AND state_key = ?",
(etype,
state_key)) if state_key is not None else
("AND type = ?", (etype, ))
for etype, state_key in types]
if include_other_types:
unique_types = set(filtered_types)
clause_to_args.append(
("AND type <> ? " * len(unique_types),
list(unique_types)))
else:
# If types is None we fetch all the state, and so just use an
# empty where clause with no extra args.
clause_to_args = [("", [])]
for where_clause, where_args in clause_to_args:
args = [room_id]
args.extend(where_args)
txn.execute(sql % (where_clause, ), args)
for row in txn:
typ, state_key, event_id = row
key = (intern_string(typ), intern_string(state_key))
results[key] = event_id
return results
def _get_current_state_ids_txn(txn):
txn.execute(
"""SELECT type, state_key, event_id FROM current_state_events
WHERE room_id = ?
""", (room_id, ))
return {(intern_string(r[0]), intern_string(r[1])): to_ascii(r[2])
for r in txn}
def _get_state_for_groups(self, groups, types=None):
"""Given list of groups returns dict of group -> list of state events
with matching types. `types` is a list of `(type, state_key)`, where
a `state_key` of None matches all state_keys. If `types` is None then
all events are returned.
"""
if types:
types = frozenset(types)
results = {}
missing_groups = []
if types is not None:
for group in set(groups):
state_dict_ids, _, got_all = self._get_some_state_from_cache(
group, types
)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
else:
for group in set(groups):
state_dict_ids, got_all = self._get_all_state_from_cache(
group
)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
if missing_groups:
# Okay, so we have some missing_types, lets fetch them.
cache_seq_num = self._state_group_cache.sequence
group_to_state_dict = yield self._get_state_groups_from_groups(
missing_groups, types
)
# Now we want to update the cache with all the things we fetched
# from the database.
for group, group_state_dict in group_to_state_dict.iteritems():
state_dict = results[group]
state_dict.update(
((intern_string(k[0]), intern_string(k[1])), to_ascii(v))
for k, v in group_state_dict.iteritems()
)
self._state_group_cache.update(
cache_seq_num,
key=group,
value=state_dict,
full=(types is None),
known_absent=types,
)
defer.returnValue(results)
def _get_current_state_ids_txn(txn):
txn.execute(
"""SELECT type, state_key, event_id FROM current_state_events
WHERE room_id = ?
""",
(room_id,)
)
return {
(intern_string(r[0]), intern_string(r[1])): to_ascii(r[2]) for r in txn
}
def _get_current_state_ids_txn(
txn: LoggingTransaction) -> StateMap[str]:
txn.execute(
"""SELECT type, state_key, event_id FROM current_state_events
WHERE room_id = ?
""",
(room_id, ),
)
return {(intern_string(r[0]), intern_string(r[1])): r[2]
for r in txn}
async def get_destinations(self,
state_entry: "_StateCacheEntry") -> Set[str]:
"""Get set of destinations for a state entry
Args:
state_entry
Returns:
The destinations as a set.
"""
if state_entry.state_group == self.state_group:
return frozenset(self.hosts_to_joined_users)
with (await self.linearizer.queue(())):
if state_entry.state_group == self.state_group:
pass
elif state_entry.prev_group == self.state_group:
for (typ,
state_key), event_id in state_entry.delta_ids.items():
if typ != EventTypes.Member:
continue
host = intern_string(get_domain_from_id(state_key))
user_id = state_key
known_joins = self.hosts_to_joined_users.setdefault(
host, set())
event = await self.store.get_event(event_id)
if event.membership == Membership.JOIN:
known_joins.add(user_id)
else:
known_joins.discard(user_id)
if not known_joins:
self.hosts_to_joined_users.pop(host, None)
else:
joined_users = await self.store.get_joined_users_from_state(
self.room_id, state_entry)
self.hosts_to_joined_users = {}
for user_id in joined_users:
host = intern_string(get_domain_from_id(user_id))
self.hosts_to_joined_users.setdefault(host,
set()).add(user_id)
if state_entry.state_group:
self.state_group = state_entry.state_group
else:
self.state_group = object()
self._len = sum(
len(v) for v in self.hosts_to_joined_users.values())
return frozenset(self.hosts_to_joined_users)
def _get_state_for_groups(self, groups, types=None):
"""Given list of groups returns dict of group -> list of state events
with matching types. `types` is a list of `(type, state_key)`, where
a `state_key` of None matches all state_keys. If `types` is None then
all events are returned.
"""
if types:
types = frozenset(types)
results = {}
missing_groups = []
if types is not None:
for group in set(groups):
state_dict_ids, _, got_all = self._get_some_state_from_cache(
group, types)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
else:
for group in set(groups):
state_dict_ids, got_all = self._get_all_state_from_cache(group)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
if missing_groups:
# Okay, so we have some missing_types, lets fetch them.
cache_seq_num = self._state_group_cache.sequence
group_to_state_dict = yield self._get_state_groups_from_groups(
missing_groups, types)
# Now we want to update the cache with all the things we fetched
# from the database.
for group, group_state_dict in iteritems(group_to_state_dict):
state_dict = results[group]
state_dict.update(
((intern_string(k[0]), intern_string(k[1])), to_ascii(v))
for k, v in iteritems(group_state_dict))
self._state_group_cache.update(
cache_seq_num,
key=group,
value=state_dict,
full=(types is None),
known_absent=types,
)
defer.returnValue(results)
def get_destinations(self, state_entry):
"""Get set of destinations for a state entry
Args:
state_entry(synapse.state._StateCacheEntry)
"""
if state_entry.state_group == self.state_group:
defer.returnValue(frozenset(self.hosts_to_joined_users))
with (yield self.linearizer.queue(())):
if state_entry.state_group == self.state_group:
pass
elif state_entry.prev_group == self.state_group:
for (typ,
state_key), event_id in iteritems(state_entry.delta_ids):
if typ != EventTypes.Member:
continue
host = intern_string(get_domain_from_id(state_key))
user_id = state_key
known_joins = self.hosts_to_joined_users.setdefault(
host, set())
event = yield self.store.get_event(event_id)
if event.membership == Membership.JOIN:
known_joins.add(user_id)
else:
known_joins.discard(user_id)
if not known_joins:
self.hosts_to_joined_users.pop(host, None)
else:
joined_users = yield self.store.get_joined_users_from_state(
self.room_id,
state_entry,
)
self.hosts_to_joined_users = {}
for user_id in joined_users:
host = intern_string(get_domain_from_id(user_id))
self.hosts_to_joined_users.setdefault(host,
set()).add(user_id)
if state_entry.state_group:
self.state_group = state_entry.state_group
else:
self.state_group = object()
self._len = sum(
len(v) for v in itervalues(self.hosts_to_joined_users))
defer.returnValue(frozenset(self.hosts_to_joined_users))
def _get_joined_hosts(self, room_id, state_group, current_state_ids):
# We don't use `state_group`, its there so that we can cache based
# on it. However, its important that its never None, since two current_state's
# with a state_group of None are likely to be different.
# See bulk_get_push_rules_for_room for how we work around this.
assert state_group is not None
joined_hosts = set()
for etype, state_key in current_state_ids:
if etype == EventTypes.Member:
try:
host = get_domain_from_id(state_key)
except:
logger.warn("state_key not user_id: %s", state_key)
continue
if host in joined_hosts:
continue
event_id = current_state_ids[(etype, state_key)]
event = yield self.get_event(event_id, allow_none=True)
if event and event.content["membership"] == Membership.JOIN:
joined_hosts.add(intern_string(host))
defer.returnValue(joined_hosts)
def get_destinations(self, state_entry):
"""Get set of destinations for a state entry
Args:
state_entry(synapse.state._StateCacheEntry)
"""
if state_entry.state_group == self.state_group:
defer.returnValue(frozenset(self.hosts_to_joined_users))
with (yield self.linearizer.queue(())):
if state_entry.state_group == self.state_group:
pass
elif state_entry.prev_group == self.state_group:
for (typ, state_key), event_id in iteritems(state_entry.delta_ids):
if typ != EventTypes.Member:
continue
host = intern_string(get_domain_from_id(state_key))
user_id = state_key
known_joins = self.hosts_to_joined_users.setdefault(host, set())
event = yield self.store.get_event(event_id)
if event.membership == Membership.JOIN:
known_joins.add(user_id)
else:
known_joins.discard(user_id)
if not known_joins:
self.hosts_to_joined_users.pop(host, None)
else:
joined_users = yield self.store.get_joined_users_from_state(
self.room_id, state_entry
)
self.hosts_to_joined_users = {}
for user_id in joined_users:
host = intern_string(get_domain_from_id(user_id))
self.hosts_to_joined_users.setdefault(host, set()).add(user_id)
if state_entry.state_group:
self.state_group = state_entry.state_group
else:
self.state_group = object()
self._len = sum(len(v) for v in itervalues(self.hosts_to_joined_users))
defer.returnValue(frozenset(self.hosts_to_joined_users))
def _get_filtered_current_state_ids_txn(txn):
results = {}
sql = """
SELECT type, state_key, event_id FROM current_state_events
WHERE room_id = ?
"""
if where_clause:
sql += " AND (%s)" % (where_clause, )
args = [room_id]
args.extend(where_args)
txn.execute(sql, args)
for row in txn:
typ, state_key, event_id = row
key = (intern_string(typ), intern_string(state_key))
results[key] = event_id
return results
def _get_state_for_groups(self, groups, types=None):
"""Given list of groups returns dict of group -> list of state events
with matching types. `types` is a list of `(type, state_key)`, where
a `state_key` of None matches all state_keys. If `types` is None then
all events are returned.
"""
if types:
types = frozenset(types)
results = {}
missing_groups = []
if types is not None:
for group in set(groups):
state_dict_ids, missing_types, got_all = self._get_some_state_from_cache(
group, types
)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
else:
for group in set(groups):
state_dict_ids, got_all = self._get_all_state_from_cache(
group
)
results[group] = state_dict_ids
if not got_all:
missing_groups.append(group)
if missing_groups:
# Okay, so we have some missing_types, lets fetch them.
cache_seq_num = self._state_group_cache.sequence
group_to_state_dict = yield self._get_state_groups_from_groups(
missing_groups, types
)
# Now we want to update the cache with all the things we fetched
# from the database.
for group, group_state_dict in group_to_state_dict.items():
if types:
# We delibrately put key -> None mappings into the cache to
# cache absence of the key, on the assumption that if we've
# explicitly asked for some types then we will probably ask
# for them again.
state_dict = {
(intern_string(etype), intern_string(state_key)): None
for (etype, state_key) in types
}
state_dict.update(results[group])
results[group] = state_dict
else:
state_dict = results[group]
state_dict.update(group_state_dict)
self._state_group_cache.update(
cache_seq_num,
key=group,
value=state_dict,
full=(types is None),
)
state_events = yield self._get_events(
[ev_id for sd in results.values() for ev_id in sd.values()],
get_prev_content=False
)
state_events = {e.event_id: e for e in state_events}
# Remove all the entries with None values. The None values were just
# used for bookkeeping in the cache.
for group, state_dict in results.items():
results[group] = {
key: state_events[event_id]
for key, event_id in state_dict.items()
if event_id and event_id in state_events
}
defer.returnValue(results)
async def _get_joined_hosts(
self,
room_id: str,
state_group: int,
current_state_ids: StateMap[str],
state_entry: "_StateCacheEntry",
) -> FrozenSet[str]:
# We don't use `state_group`, its there so that we can cache based on
# it. However, its important that its never None, since two
# current_state's with a state_group of None are likely to be different.
#
# The `state_group` must match the `state_entry.state_group` (if not None).
assert state_group is not None
assert state_entry.state_group is None or state_entry.state_group == state_group
# We use a secondary cache of previous work to allow us to build up the
# joined hosts for the given state group based on previous state groups.
#
# We cache one object per room containing the results of the last state
# group we got joined hosts for. The idea is that generally
# `get_joined_hosts` is called with the "current" state group for the
# room, and so consecutive calls will be for consecutive state groups
# which point to the previous state group.
cache = await self._get_joined_hosts_cache(room_id)
# If the state group in the cache matches, we already have the data we need.
if state_entry.state_group == cache.state_group:
return frozenset(cache.hosts_to_joined_users)
# Since we'll mutate the cache we need to lock.
with (await self._joined_host_linearizer.queue(room_id)):
if state_entry.state_group == cache.state_group:
# Same state group, so nothing to do. We've already checked for
# this above, but the cache may have changed while waiting on
# the lock.
pass
elif state_entry.prev_group == cache.state_group:
# The cached work is for the previous state group, so we work out
# the delta.
for (typ,
state_key), event_id in state_entry.delta_ids.items():
if typ != EventTypes.Member:
continue
host = intern_string(get_domain_from_id(state_key))
user_id = state_key
known_joins = cache.hosts_to_joined_users.setdefault(
host, set())
event = await self.get_event(event_id)
if event.membership == Membership.JOIN:
known_joins.add(user_id)
else:
known_joins.discard(user_id)
if not known_joins:
cache.hosts_to_joined_users.pop(host, None)
else:
# The cache doesn't match the state group or prev state group,
# so we calculate the result from first principles.
joined_users = await self.get_joined_users_from_state(
room_id, state_entry)
cache.hosts_to_joined_users = {}
for user_id in joined_users:
host = intern_string(get_domain_from_id(user_id))
cache.hosts_to_joined_users.setdefault(host,
set()).add(user_id)
if state_entry.state_group:
cache.state_group = state_entry.state_group
else:
cache.state_group = object()
return frozenset(cache.hosts_to_joined_users)
