diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/storage/e2e_room_keys.py | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/synapse/storage/e2e_room_keys.py b/synapse/storage/e2e_room_keys.py index c2f226396d..d82f223e86 100644 --- a/synapse/storage/e2e_room_keys.py +++ b/synapse/storage/e2e_room_keys.py @@ -184,6 +184,17 @@ class EndToEndRoomKeyStore(SQLBaseStore): desc="delete_e2e_room_keys", ) + @staticmethod + def _get_current_version(txn, user_id): + txn.execute( + "SELECT MAX(version) FROM e2e_room_keys_versions WHERE user_id=?", + (user_id,) + ) + row = txn.fetchone() + if not row: + raise StoreError(404, 'No current backup version') + return row[0] + def get_e2e_room_keys_version_info(self, user_id, version=None): """Get info metadata about a version of our room_keys backup. @@ -199,11 +210,7 @@ class EndToEndRoomKeyStore(SQLBaseStore): def _get_e2e_room_keys_version_info_txn(txn): if version is None: - txn.execute( - "SELECT MAX(version) FROM e2e_room_keys_versions WHERE user_id=?", - (user_id,) - ) - this_version = txn.fetchone()[0] + this_version = self._get_current_version(txn, user_id) else: this_version = version @@ -266,23 +273,35 @@ class EndToEndRoomKeyStore(SQLBaseStore): "create_e2e_room_keys_version_txn", _create_e2e_room_keys_version_txn ) - @defer.inlineCallbacks - def delete_e2e_room_keys_version(self, user_id, version): + def delete_e2e_room_keys_version(self, user_id, version=None): """Delete a given backup version of the user's room keys. Doesn't delete their actual key data. Args: user_id(str): the user whose backup version we're deleting - version(str): the ID of the backup version we're deleting + version(str): Optional. the version ID of the backup version we're deleting + If missing, we delete the current backup version info. + Raises: + StoreError: with code 404 if there are no e2e_room_keys_versions present, + or if the version requested doesn't exist. """ - keyvalues = { - "user_id": user_id, - "version": version, - } + def _delete_e2e_room_keys_version_txn(txn): + if version is None: + this_version = self._get_current_version(txn, user_id) + else: + this_version = version - yield self._simple_delete( - table="e2e_room_keys_versions", - keyvalues=keyvalues, - desc="delete_e2e_room_keys_version", + return self._simple_delete_one_txn( + txn, + table="e2e_room_keys_versions", + keyvalues={ + "user_id": user_id, + "version": this_version, + }, + ) + + return self.runInteraction( + "delete_e2e_room_keys_version", + _delete_e2e_room_keys_version_txn ) |