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Merge pull request #3670 from matrix-org/neilj/mau_sync_block

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Block ability to read via sync if mau limit exceeded
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Neil Johnson 2018-08-14 15:21:31 +00:00 • committed by GitHub
commit 414d54b61a
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7 changed files with 112 additions and 20 deletions
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13
synapse/handlers/sync.py
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@ -191,6 +191,7 @@ class SyncHandler(object):
self.clock = hs.get_clock()
self.response_cache = ResponseCache(hs, "sync")
self.state = hs.get_state_handler()
self.auth = hs.get_auth()
# ExpiringCache((User, Device)) -> LruCache(state_key => event_id)
self.lazy_loaded_members_cache = ExpiringCache(
@ -198,19 +199,27 @@ class SyncHandler(object):
max_len=0, expiry_ms=LAZY_LOADED_MEMBERS_CACHE_MAX_AGE,
)
@defer.inlineCallbacks
def wait_for_sync_for_user(self, sync_config, since_token=None, timeout=0,
full_state=False):
"""Get the sync for a client if we have new data for it now. Otherwise
wait for new data to arrive on the server. If the timeout expires, then
return an empty sync result.
Returns:
A Deferred SyncResult.
Deferred[SyncResult]
"""
return self.response_cache.wrap(
# If the user is not part of the mau group, then check that limits have
# not been exceeded (if not part of the group by this point, almost certain
# auth_blocking will occur)
user_id = sync_config.user.to_string()
yield self.auth.check_auth_blocking(user_id)
res = yield self.response_cache.wrap(
sync_config.request_key,
self._wait_for_sync_for_user,
sync_config, since_token, timeout, full_state,
)
defer.returnValue(res)
@defer.inlineCallbacks
def _wait_for_sync_for_user(self, sync_config, since_token, timeout,