diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index 9522acd972..80b57a948c 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -140,7 +140,7 @@ class BackgroundUpdateStore(SQLBaseStore):
"background_updates",
keyvalues=None,
retcol="1",
- desc="check_background_updates",
+ desc="has_completed_background_updates",
)
if not updates:
self._all_done = True
@@ -148,6 +148,26 @@ class BackgroundUpdateStore(SQLBaseStore):
return False
+ async def has_completed_background_update(self, update_name) -> bool:
+ """Check if the given background update has finished running.
+ """
+
+ if self._all_done:
+ return True
+
+ if update_name in self._background_update_queue:
+ return False
+
+ update_exists = await self._simple_select_one_onecol(
+ "background_updates",
+ keyvalues={"update_name": update_name},
+ retcol="1",
+ desc="has_completed_background_update",
+ allow_none=True,
+ )
+
+ return not update_exists
+
@defer.inlineCallbacks
def do_next_background_update(self, desired_duration_ms):
"""Does some amount of work on the next queued background update
diff --git a/synapse/storage/client_ips.py b/synapse/storage/client_ips.py
index 8996689744..539584288d 100644
--- a/synapse/storage/client_ips.py
+++ b/synapse/storage/client_ips.py
@@ -19,7 +19,7 @@ from six import iteritems
from twisted.internet import defer
-from synapse.metrics.background_process_metrics import run_as_background_process
+from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.util.caches import CACHE_SIZE_FACTOR
from . import background_updates
@@ -42,6 +42,8 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
super(ClientIpStore, self).__init__(db_conn, hs)
+ self.user_ips_max_age = hs.config.user_ips_max_age
+
self.register_background_index_update(
"user_ips_device_index",
index_name="user_ips_device_id",
@@ -100,6 +102,9 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
"before", "shutdown", self._update_client_ips_batch
)
+ if self.user_ips_max_age:
+ self._clock.looping_call(self._prune_old_user_ips, 5 * 1000)
+
@defer.inlineCallbacks
def _remove_user_ip_nonunique(self, progress, batch_size):
def f(conn):
@@ -319,20 +324,19 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
self._batch_row_update[key] = (user_agent, device_id, now)
+ @wrap_as_background_process("update_client_ips")
def _update_client_ips_batch(self):
# If the DB pool has already terminated, don't try updating
if not self.hs.get_db_pool().running:
return
- def update():
- to_update = self._batch_row_update
- self._batch_row_update = {}
- return self.runInteraction(
- "_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
- )
+ to_update = self._batch_row_update
+ self._batch_row_update = {}
- return run_as_background_process("update_client_ips", update)
+ return self.runInteraction(
+ "_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
+ )
def _update_client_ips_batch_txn(self, txn, to_update):
if "user_ips" in self._unsafe_to_upsert_tables or (
@@ -496,3 +500,45 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
yield self._end_background_update("devices_last_seen")
return updated
+
+ @wrap_as_background_process("prune_old_user_ips")
+ async def _prune_old_user_ips(self):
+ """Removes entries in user IPs older than the configured period.
+ """
+
+ if self.user_ips_max_age is None:
+ # Nothing to do
+ return
+
+ if not await self.has_completed_background_update("devices_last_seen"):
+ # Only start pruning if we have finished populating the devices
+ # last seen info.
+ return
+
+ # We do a slightly funky SQL delete to ensure we don't try and delete
+ # too much at once (as the table may be very large from before we
+ # started pruning).
+ #
+ # This works by finding the max last_seen that is less than the given
+ # time, but has no more than N rows before it, deleting all rows with
+ # a lesser last_seen time. (We COALESCE so that the sub-SELECT always
+ # returns exactly one row).
+ sql = """
+ DELETE FROM user_ips
+ WHERE last_seen <= (
+ SELECT COALESCE(MAX(last_seen), -1)
+ FROM (
+ SELECT last_seen FROM user_ips
+ WHERE last_seen <= ?
+ ORDER BY last_seen ASC
+ LIMIT 5000
+ ) AS u
+ )
+ """
+
+ timestamp = self.clock.time_msec() - self.user_ips_max_age
+
+ def _prune_old_user_ips_txn(txn):
+ txn.execute(sql, (timestamp,))
+
+ await self.runInteraction("_prune_old_user_ips", _prune_old_user_ips_txn)
|
