diff --git a/synapse/storage/client_ips.py b/synapse/storage/client_ips.py
index 9ad17b7c25..5d548f250a 100644
--- a/synapse/storage/client_ips.py
+++ b/synapse/storage/client_ips.py
@@ -65,7 +65,27 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
columns=["last_seen"],
)
- # (user_id, access_token, ip) -> (user_agent, device_id, last_seen)
+ self.register_background_update_handler(
+ "user_ips_remove_dupes",
+ self._remove_user_ip_dupes,
+ )
+
+ # Register a unique index
+ self.register_background_index_update(
+ "user_ips_device_unique_index",
+ index_name="user_ips_user_token_ip_unique_index",
+ table="user_ips",
+ columns=["user_id", "access_token", "ip"],
+ unique=True,
+ )
+
+ # Drop the old non-unique index
+ self.register_background_update_handler(
+ "user_ips_drop_nonunique_index",
+ self._remove_user_ip_nonunique,
+ )
+
+ # (user_id, access_token, ip,) -> (user_agent, device_id, last_seen)
self._batch_row_update = {}
self._client_ip_looper = self._clock.looping_call(
@@ -76,6 +96,116 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
)
@defer.inlineCallbacks
+ def _remove_user_ip_nonunique(self, progress, batch_size):
+ def f(conn):
+ txn = conn.cursor()
+ txn.execute(
+ "DROP INDEX IF EXISTS user_ips_user_ip"
+ )
+ txn.close()
+
+ yield self.runWithConnection(f)
+ yield self._end_background_update("user_ips_drop_nonunique_index")
+ defer.returnValue(1)
+
+ @defer.inlineCallbacks
+ def _remove_user_ip_dupes(self, progress, batch_size):
+
+ last_seen_progress = progress.get("last_seen", 0)
+
+ def get_last_seen(txn):
+ txn.execute(
+ """
+ SELECT last_seen FROM user_ips
+ WHERE last_seen > ?
+ ORDER BY last_seen
+ LIMIT 1
+ OFFSET ?
+ """,
+ (last_seen_progress, batch_size)
+ )
+ results = txn.fetchone()
+ return results
+
+ # Get a last seen that's sufficiently far away enough from the last one
+ last_seen = yield self.runInteraction(
+ "user_ips_dups_get_last_seen", get_last_seen
+ )
+
+ if not last_seen:
+ # If we get a None then we're reaching the end and just need to
+ # delete the last batch.
+ last = True
+
+ # We fake not having an upper bound by using a future date, by
+ # just multiplying the current time by two....
+ last_seen = int(self.clock.time_msec()) * 2
+ else:
+ last = False
+ last_seen = last_seen[0]
+
+ def remove(txn, last_seen_progress, last_seen):
+ # This works by looking at all entries in the given time span, and
+ # then for each (user_id, access_token, ip) tuple in that range
+ # checking for any duplicates in the rest of the table (via a join).
+ # It then only returns entries which have duplicates, and the max
+ # last_seen across all duplicates, which can the be used to delete
+ # all other duplicates.
+ # It is efficient due to the existence of (user_id, access_token,
+ # ip) and (last_seen) indices.
+ txn.execute(
+ """
+ SELECT user_id, access_token, ip,
+ MAX(device_id), MAX(user_agent), MAX(last_seen)
+ FROM (
+ SELECT user_id, access_token, ip
+ FROM user_ips
+ WHERE ? <= last_seen AND last_seen < ?
+ ORDER BY last_seen
+ ) c
+ INNER JOIN user_ips USING (user_id, access_token, ip)
+ GROUP BY user_id, access_token, ip
+ HAVING count(*) > 1""",
+ (last_seen_progress, last_seen)
+ )
+ res = txn.fetchall()
+
+ # We've got some duplicates
+ for i in res:
+ user_id, access_token, ip, device_id, user_agent, last_seen = i
+
+ # Drop all the duplicates
+ txn.execute(
+ """
+ DELETE FROM user_ips
+ WHERE user_id = ? AND access_token = ? AND ip = ?
+ """,
+ (user_id, access_token, ip)
+ )
+
+ # Add in one to be the last_seen
+ txn.execute(
+ """
+ INSERT INTO user_ips
+ (user_id, access_token, ip, device_id, user_agent, last_seen)
+ VALUES (?, ?, ?, ?, ?, ?)
+ """,
+ (user_id, access_token, ip, device_id, user_agent, last_seen)
+ )
+
+ self._background_update_progress_txn(
+ txn, "user_ips_remove_dupes", {"last_seen": last_seen}
+ )
+
+ yield self.runInteraction(
+ "user_ips_dups_remove", remove, last_seen_progress, last_seen
+ )
+ if last:
+ yield self._end_background_update("user_ips_remove_dupes")
+
+ defer.returnValue(batch_size)
+
+ @defer.inlineCallbacks
def insert_client_ip(self, user_id, access_token, ip, user_agent, device_id,
now=None):
if not now:
@@ -127,10 +257,10 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
"user_id": user_id,
"access_token": access_token,
"ip": ip,
- "user_agent": user_agent,
- "device_id": device_id,
},
values={
+ "user_agent": user_agent,
+ "device_id": device_id,
"last_seen": last_seen,
},
lock=False,
@@ -227,7 +357,7 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
results = {}
for key in self._batch_row_update:
- uid, access_token, ip = key
+ uid, access_token, ip, = key
if uid == user_id:
user_agent, _, last_seen = self._batch_row_update[key]
results[(access_token, ip)] = (user_agent, last_seen)
diff --git a/synapse/storage/schema/delta/53/user_ips_index.sql b/synapse/storage/schema/delta/53/user_ips_index.sql
new file mode 100644
index 0000000000..4ca346c111
--- /dev/null
+++ b/synapse/storage/schema/delta/53/user_ips_index.sql
@@ -0,0 +1,26 @@
+/* Copyright 2018 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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.
+ */
+
+-- delete duplicates
+INSERT INTO background_updates (update_name, progress_json) VALUES
+ ('user_ips_remove_dupes', '{}');
+
+-- add a new unique index to user_ips table
+INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES
+ ('user_ips_device_unique_index', '{}', 'user_ips_remove_dupes');
+
+-- drop the old original index
+INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES
+ ('user_ips_drop_nonunique_index', '{}', 'user_ips_device_unique_index');
\ No newline at end of file
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