diff options
Diffstat (limited to 'synapse/handlers')
| -rw-r--r-- | synapse/handlers/state_deltas.py | 70 | ||||
| -rw-r--r-- | synapse/handlers/user_directory.py | 51 |
2 files changed, 75 insertions, 46 deletions
diff --git a/synapse/handlers/state_deltas.py b/synapse/handlers/state_deltas.py new file mode 100644 index 0000000000..b268bbcb2c --- /dev/null +++ b/synapse/handlers/state_deltas.py @@ -0,0 +1,70 @@ +# -*- coding: utf-8 -*- +# 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. + +import logging + +from twisted.internet import defer + +logger = logging.getLogger(__name__) + + +class StateDeltasHandler(object): + + def __init__(self, hs): + self.store = hs.get_datastore() + + @defer.inlineCallbacks + def _get_key_change(self, prev_event_id, event_id, key_name, public_value): + """Given two events check if the `key_name` field in content changed + from not matching `public_value` to doing so. + + For example, check if `history_visibility` (`key_name`) changed from + `shared` to `world_readable` (`public_value`). + + Returns: + None if the field in the events either both match `public_value` + or if neither do, i.e. there has been no change. + True if it didnt match `public_value` but now does + False if it did match `public_value` but now doesn't + """ + prev_event = None + event = None + if prev_event_id: + prev_event = yield self.store.get_event(prev_event_id, allow_none=True) + + if event_id: + event = yield self.store.get_event(event_id, allow_none=True) + + if not event and not prev_event: + logger.debug("Neither event exists: %r %r", prev_event_id, event_id) + defer.returnValue(None) + + prev_value = None + value = None + + if prev_event: + prev_value = prev_event.content.get(key_name) + + if event: + value = event.content.get(key_name) + + logger.debug("prev_value: %r -> value: %r", prev_value, value) + + if value == public_value and prev_value != public_value: + defer.returnValue(True) + elif value != public_value and prev_value == public_value: + defer.returnValue(False) + else: + defer.returnValue(None) diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py index 7dc0e236e7..b689979b4b 100644 --- a/synapse/handlers/user_directory.py +++ b/synapse/handlers/user_directory.py @@ -21,6 +21,7 @@ from twisted.internet import defer import synapse.metrics from synapse.api.constants import EventTypes, JoinRules, Membership +from synapse.handlers.state_deltas import StateDeltasHandler from synapse.metrics.background_process_metrics import run_as_background_process from synapse.storage.roommember import ProfileInfo from synapse.types import get_localpart_from_id @@ -29,7 +30,7 @@ from synapse.util.metrics import Measure logger = logging.getLogger(__name__) -class UserDirectoryHandler(object): +class UserDirectoryHandler(StateDeltasHandler): """Handles querying of and keeping updated the user_directory. N.B.: ASSUMES IT IS THE ONLY THING THAT MODIFIES THE USER DIRECTORY @@ -41,6 +42,8 @@ class UserDirectoryHandler(object): """ def __init__(self, hs): + super(UserDirectoryHandler, self).__init__(hs) + self.store = hs.get_datastore() self.state = hs.get_state_handler() self.server_name = hs.hostname @@ -360,7 +363,7 @@ class UserDirectoryHandler(object): @defer.inlineCallbacks def _handle_remove_user(self, room_id, user_id): - """Called when we might need to remove user to directory + """Called when we might need to remove user from directory Args: room_id (str): room_id that user left or stopped being public that @@ -402,47 +405,3 @@ class UserDirectoryHandler(object): if prev_name != new_name or prev_avatar != new_avatar: yield self.store.update_profile_in_user_dir(user_id, new_name, new_avatar) - - @defer.inlineCallbacks - def _get_key_change(self, prev_event_id, event_id, key_name, public_value): - """Given two events check if the `key_name` field in content changed - from not matching `public_value` to doing so. - - For example, check if `history_visibility` (`key_name`) changed from - `shared` to `world_readable` (`public_value`). - - Returns: - None if the field in the events either both match `public_value` - or if neither do, i.e. there has been no change. - True if it didnt match `public_value` but now does - False if it did match `public_value` but now doesn't - """ - prev_event = None - event = None - if prev_event_id: - prev_event = yield self.store.get_event(prev_event_id, allow_none=True) - - if event_id: - event = yield self.store.get_event(event_id, allow_none=True) - - if not event and not prev_event: - logger.debug("Neither event exists: %r %r", prev_event_id, event_id) - defer.returnValue(None) - - prev_value = None - value = None - - if prev_event: - prev_value = prev_event.content.get(key_name) - - if event: - value = event.content.get(key_name) - - logger.debug("prev_value: %r -> value: %r", prev_value, value) - - if value == public_value and prev_value != public_value: - defer.returnValue(True) - elif value != public_value and prev_value == public_value: - defer.returnValue(False) - else: - defer.returnValue(None) |