diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 6b8120a608..c02248cfe9 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -14,7 +14,6 @@
# 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 itertools
import logging
import random
import sys
@@ -34,7 +33,6 @@ from synapse.logging.context import LoggingContext, make_deferred_yieldable
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.engines import PostgresEngine, Sqlite3Engine
from synapse.types import get_domain_from_id
-from synapse.util import batch_iter
from synapse.util.stringutils import exception_to_unicode
# import a function which will return a monotonic time, in seconds
@@ -77,10 +75,6 @@ UNIQUE_INDEX_BACKGROUND_UPDATES = {
"event_search": "event_search_event_id_idx",
}
-# This is a special cache name we use to batch multiple invalidations of caches
-# based on the current state when notifying workers over replication.
-_CURRENT_STATE_CACHE_NAME = "cs_cache_fake"
-
class LoggingTransaction(object):
"""An object that almost-transparently proxies for the 'txn' object
@@ -1322,47 +1316,6 @@ class SQLBaseStore(object):
return cache, min_val
- def _invalidate_cache_and_stream(self, txn, cache_func, keys):
- """Invalidates the cache and adds it to the cache stream so slaves
- will know to invalidate their caches.
-
- This should only be used to invalidate caches where slaves won't
- otherwise know from other replication streams that the cache should
- be invalidated.
- """
- txn.call_after(cache_func.invalidate, keys)
- self._send_invalidation_to_replication(txn, cache_func.__name__, keys)
-
- def _invalidate_state_caches_and_stream(self, txn, room_id, members_changed):
- """Special case invalidation of caches based on current state.
-
- We special case this so that we can batch the cache invalidations into a
- single replication poke.
-
- Args:
- txn
- room_id (str): Room where state changed
- members_changed (iterable[str]): The user_ids of members that have changed
- """
- txn.call_after(self._invalidate_state_caches, room_id, members_changed)
-
- if members_changed:
- # We need to be careful that the size of the `members_changed` list
- # isn't so large that it causes problems sending over replication, so we
- # send them in chunks.
- # Max line length is 16K, and max user ID length is 255, so 50 should
- # be safe.
- for chunk in batch_iter(members_changed, 50):
- keys = itertools.chain([room_id], chunk)
- self._send_invalidation_to_replication(
- txn, _CURRENT_STATE_CACHE_NAME, keys
- )
- else:
- # if no members changed, we still need to invalidate the other caches.
- self._send_invalidation_to_replication(
- txn, _CURRENT_STATE_CACHE_NAME, [room_id]
- )
-
def _invalidate_state_caches(self, room_id, members_changed):
"""Invalidates caches that are based on the current state, but does
not stream invalidations down replication.
@@ -1396,63 +1349,6 @@ class SQLBaseStore(object):
# which is fine.
pass
- def _send_invalidation_to_replication(self, txn, cache_name, keys):
- """Notifies replication that given cache has been invalidated.
-
- Note that this does *not* invalidate the cache locally.
-
- Args:
- txn
- cache_name (str)
- keys (iterable[str])
- """
-
- if isinstance(self.database_engine, PostgresEngine):
- # get_next() returns a context manager which is designed to wrap
- # the transaction. However, we want to only get an ID when we want
- # to use it, here, so we need to call __enter__ manually, and have
- # __exit__ called after the transaction finishes.
- ctx = self._cache_id_gen.get_next()
- stream_id = ctx.__enter__()
- txn.call_on_exception(ctx.__exit__, None, None, None)
- txn.call_after(ctx.__exit__, None, None, None)
- txn.call_after(self.hs.get_notifier().on_new_replication_data)
-
- self._simple_insert_txn(
- txn,
- table="cache_invalidation_stream",
- values={
- "stream_id": stream_id,
- "cache_func": cache_name,
- "keys": list(keys),
- "invalidation_ts": self.clock.time_msec(),
- },
- )
-
- def get_all_updated_caches(self, last_id, current_id, limit):
- if last_id == current_id:
- return defer.succeed([])
-
- def get_all_updated_caches_txn(txn):
- # We purposefully don't bound by the current token, as we want to
- # send across cache invalidations as quickly as possible. Cache
- # invalidations are idempotent, so duplicates are fine.
- sql = (
- "SELECT stream_id, cache_func, keys, invalidation_ts"
- " FROM cache_invalidation_stream"
- " WHERE stream_id > ? ORDER BY stream_id ASC LIMIT ?"
- )
- txn.execute(sql, (last_id, limit))
- return txn.fetchall()
-
- return self.runInteraction("get_all_updated_caches", get_all_updated_caches_txn)
-
- def get_cache_stream_token(self):
- if self._cache_id_gen:
- return self._cache_id_gen.get_current_token()
- else:
- return 0
-
def _simple_select_list_paginate(
self,
table,
|
