981 lines
36 KiB
Python
981 lines
36 KiB
Python
# Copyright 2017 Vector Creations Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import re
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from typing import (
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TYPE_CHECKING,
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Dict,
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Iterable,
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List,
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Optional,
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Sequence,
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Set,
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Tuple,
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cast,
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)
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try:
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# Figure out if ICU support is available for searching users.
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import icu
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USE_ICU = True
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except ModuleNotFoundError:
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USE_ICU = False
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from typing_extensions import TypedDict
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from synapse.api.errors import StoreError
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from synapse.util.stringutils import non_null_str_or_none
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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from synapse.api.constants import EventTypes, HistoryVisibility, JoinRules
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from synapse.storage.database import (
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DatabasePool,
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LoggingDatabaseConnection,
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LoggingTransaction,
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)
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from synapse.storage.databases.main.state import StateFilter
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from synapse.storage.databases.main.state_deltas import StateDeltasStore
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from synapse.storage.engines import PostgresEngine, Sqlite3Engine
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from synapse.types import (
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JsonDict,
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UserProfile,
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get_domain_from_id,
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get_localpart_from_id,
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)
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from synapse.util.caches.descriptors import cached
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logger = logging.getLogger(__name__)
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TEMP_TABLE = "_temp_populate_user_directory"
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class UserDirectoryBackgroundUpdateStore(StateDeltasStore):
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# How many records do we calculate before sending it to
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# add_users_who_share_private_rooms?
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SHARE_PRIVATE_WORKING_SET = 500
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def __init__(
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self,
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database: DatabasePool,
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db_conn: LoggingDatabaseConnection,
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hs: "HomeServer",
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) -> None:
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super().__init__(database, db_conn, hs)
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self.server_name: str = hs.hostname
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self.db_pool.updates.register_background_update_handler(
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"populate_user_directory_createtables",
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self._populate_user_directory_createtables,
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)
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self.db_pool.updates.register_background_update_handler(
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"populate_user_directory_process_rooms",
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self._populate_user_directory_process_rooms,
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)
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self.db_pool.updates.register_background_update_handler(
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"populate_user_directory_process_users",
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self._populate_user_directory_process_users,
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)
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self.db_pool.updates.register_background_update_handler(
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"populate_user_directory_cleanup", self._populate_user_directory_cleanup
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)
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async def _populate_user_directory_createtables(
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self, progress: JsonDict, batch_size: int
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) -> int:
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# Get all the rooms that we want to process.
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def _make_staging_area(txn: LoggingTransaction) -> None:
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sql = (
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"CREATE TABLE IF NOT EXISTS "
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+ TEMP_TABLE
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+ "_rooms(room_id TEXT NOT NULL, events BIGINT NOT NULL)"
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)
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txn.execute(sql)
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sql = (
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"CREATE TABLE IF NOT EXISTS "
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+ TEMP_TABLE
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+ "_position(position TEXT NOT NULL)"
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)
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txn.execute(sql)
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# Get rooms we want to process from the database
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sql = """
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SELECT room_id, count(*) FROM current_state_events
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GROUP BY room_id
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"""
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txn.execute(sql)
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rooms = list(txn.fetchall())
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self.db_pool.simple_insert_many_txn(
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txn, TEMP_TABLE + "_rooms", keys=("room_id", "events"), values=rooms
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)
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del rooms
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sql = (
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"CREATE TABLE IF NOT EXISTS "
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+ TEMP_TABLE
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+ "_users(user_id TEXT NOT NULL)"
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)
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txn.execute(sql)
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txn.execute("SELECT name FROM users")
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users = list(txn.fetchall())
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self.db_pool.simple_insert_many_txn(
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txn, TEMP_TABLE + "_users", keys=("user_id",), values=users
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)
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new_pos = await self.get_max_stream_id_in_current_state_deltas()
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await self.db_pool.runInteraction(
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"populate_user_directory_temp_build", _make_staging_area
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)
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await self.db_pool.simple_insert(
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TEMP_TABLE + "_position", {"position": new_pos}
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)
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await self.db_pool.updates._end_background_update(
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"populate_user_directory_createtables"
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)
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return 1
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async def _populate_user_directory_cleanup(
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self,
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progress: JsonDict,
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batch_size: int,
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) -> int:
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"""
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Update the user directory stream position, then clean up the old tables.
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"""
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position = await self.db_pool.simple_select_one_onecol(
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TEMP_TABLE + "_position", {}, "position"
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)
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await self.update_user_directory_stream_pos(position)
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def _delete_staging_area(txn: LoggingTransaction) -> None:
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txn.execute("DROP TABLE IF EXISTS " + TEMP_TABLE + "_rooms")
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txn.execute("DROP TABLE IF EXISTS " + TEMP_TABLE + "_users")
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txn.execute("DROP TABLE IF EXISTS " + TEMP_TABLE + "_position")
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await self.db_pool.runInteraction(
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"populate_user_directory_cleanup", _delete_staging_area
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)
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await self.db_pool.updates._end_background_update(
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"populate_user_directory_cleanup"
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)
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return 1
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async def _populate_user_directory_process_rooms(
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self, progress: JsonDict, batch_size: int
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) -> int:
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"""
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Rescan the state of all rooms so we can track
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- who's in a public room;
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- which local users share a private room with other users (local
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and remote); and
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- who should be in the user_directory.
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Args:
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progress
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batch_size: Maximum number of state events to process per cycle.
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Returns:
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number of events processed.
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"""
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# If we don't have progress filed, delete everything.
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if not progress:
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await self.delete_all_from_user_dir()
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def _get_next_batch(
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txn: LoggingTransaction,
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) -> Optional[Sequence[Tuple[str, int]]]:
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# Only fetch 250 rooms, so we don't fetch too many at once, even
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# if those 250 rooms have less than batch_size state events.
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sql = """
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SELECT room_id, events FROM %s
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ORDER BY events DESC
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LIMIT 250
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""" % (
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TEMP_TABLE + "_rooms",
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)
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txn.execute(sql)
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rooms_to_work_on = cast(List[Tuple[str, int]], txn.fetchall())
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if not rooms_to_work_on:
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return None
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# Get how many are left to process, so we can give status on how
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# far we are in processing
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txn.execute("SELECT COUNT(*) FROM " + TEMP_TABLE + "_rooms")
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result = txn.fetchone()
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assert result is not None
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progress["remaining"] = result[0]
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return rooms_to_work_on
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rooms_to_work_on = await self.db_pool.runInteraction(
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"populate_user_directory_temp_read", _get_next_batch
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)
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# No more rooms -- complete the transaction.
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if not rooms_to_work_on:
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await self.db_pool.updates._end_background_update(
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"populate_user_directory_process_rooms"
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)
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return 1
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logger.debug(
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"Processing the next %d rooms of %d remaining"
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% (len(rooms_to_work_on), progress["remaining"])
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)
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processed_event_count = 0
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for room_id, event_count in rooms_to_work_on:
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is_in_room = await self.is_host_joined(room_id, self.server_name) # type: ignore[attr-defined]
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if is_in_room:
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users_with_profile = await self.get_users_in_room_with_profiles(room_id) # type: ignore[attr-defined]
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# Throw away users excluded from the directory.
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users_with_profile = {
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user_id: profile
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for user_id, profile in users_with_profile.items()
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if not self.hs.is_mine_id(user_id)
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or await self.should_include_local_user_in_dir(user_id)
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}
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# Upsert a user_directory record for each remote user we see.
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for user_id, profile in users_with_profile.items():
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# Local users are processed separately in
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# `_populate_user_directory_users`; there we can read from
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# the `profiles` table to ensure we don't leak their per-room
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# profiles. It also means we write local users to this table
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# exactly once, rather than once for every room they're in.
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if self.hs.is_mine_id(user_id):
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continue
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# TODO `users_with_profile` above reads from the `user_directory`
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# table, meaning that `profile` is bespoke to this room.
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# and this leaks remote users' per-room profiles to the user directory.
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await self.update_profile_in_user_dir(
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user_id, profile.display_name, profile.avatar_url
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)
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# Now update the room sharing tables to include this room.
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is_public = await self.is_room_world_readable_or_publicly_joinable(
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room_id
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)
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if is_public:
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if users_with_profile:
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await self.add_users_in_public_rooms(
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room_id, users_with_profile.keys()
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)
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else:
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to_insert = set()
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for user_id in users_with_profile:
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# We want the set of pairs (L, M) where L and M are
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# in `users_with_profile` and L is local.
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# Do so by looking for the local user L first.
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if not self.hs.is_mine_id(user_id):
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continue
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for other_user_id in users_with_profile:
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if user_id == other_user_id:
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continue
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user_set = (user_id, other_user_id)
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to_insert.add(user_set)
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# If it gets too big, stop and write to the database
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# to prevent storing too much in RAM.
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if len(to_insert) >= self.SHARE_PRIVATE_WORKING_SET:
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await self.add_users_who_share_private_room(
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room_id, to_insert
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)
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to_insert.clear()
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if to_insert:
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await self.add_users_who_share_private_room(room_id, to_insert)
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to_insert.clear()
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# We've finished a room. Delete it from the table.
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await self.db_pool.simple_delete_one(
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TEMP_TABLE + "_rooms", {"room_id": room_id}
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)
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# Update the remaining counter.
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progress["remaining"] -= 1
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await self.db_pool.runInteraction(
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"populate_user_directory",
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self.db_pool.updates._background_update_progress_txn,
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"populate_user_directory_process_rooms",
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progress,
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)
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processed_event_count += event_count
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if processed_event_count > batch_size:
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# Don't process any more rooms, we've hit our batch size.
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return processed_event_count
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return processed_event_count
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async def _populate_user_directory_process_users(
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self, progress: JsonDict, batch_size: int
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) -> int:
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"""
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Add all local users to the user directory.
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"""
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def _get_next_batch(txn: LoggingTransaction) -> Optional[List[str]]:
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sql = "SELECT user_id FROM %s LIMIT %s" % (
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TEMP_TABLE + "_users",
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str(batch_size),
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)
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txn.execute(sql)
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user_result = cast(List[Tuple[str]], txn.fetchall())
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if not user_result:
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return None
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users_to_work_on = [x[0] for x in user_result]
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# Get how many are left to process, so we can give status on how
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# far we are in processing
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sql = "SELECT COUNT(*) FROM " + TEMP_TABLE + "_users"
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txn.execute(sql)
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count_result = txn.fetchone()
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assert count_result is not None
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progress["remaining"] = count_result[0]
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return users_to_work_on
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users_to_work_on = await self.db_pool.runInteraction(
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"populate_user_directory_temp_read", _get_next_batch
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)
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# No more users -- complete the transaction.
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if not users_to_work_on:
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await self.db_pool.updates._end_background_update(
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"populate_user_directory_process_users"
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)
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return 1
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logger.debug(
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"Processing the next %d users of %d remaining"
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% (len(users_to_work_on), progress["remaining"])
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)
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for user_id in users_to_work_on:
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if await self.should_include_local_user_in_dir(user_id):
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profile = await self.get_profileinfo(get_localpart_from_id(user_id)) # type: ignore[attr-defined]
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await self.update_profile_in_user_dir(
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user_id, profile.display_name, profile.avatar_url
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)
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# We've finished processing a user. Delete it from the table.
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await self.db_pool.simple_delete_one(
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TEMP_TABLE + "_users", {"user_id": user_id}
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)
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# Update the remaining counter.
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progress["remaining"] -= 1
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await self.db_pool.runInteraction(
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"populate_user_directory",
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self.db_pool.updates._background_update_progress_txn,
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"populate_user_directory_process_users",
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progress,
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)
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return len(users_to_work_on)
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async def should_include_local_user_in_dir(self, user: str) -> bool:
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"""Certain classes of local user are omitted from the user directory.
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Is this user one of them?
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"""
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# We're opting to exclude the appservice sender (user defined by the
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# `sender_localpart` in the appservice registration) even though
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# technically it could be DM-able. In the future, this could potentially
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# be configurable per-appservice whether the appservice sender can be
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# contacted.
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if self.get_app_service_by_user_id(user) is not None: # type: ignore[attr-defined]
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return False
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# We're opting to exclude appservice users (anyone matching the user
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# namespace regex in the appservice registration) even though technically
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# they could be DM-able. In the future, this could potentially
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# be configurable per-appservice whether the appservice users can be
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# contacted.
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if self.get_if_app_services_interested_in_user(user): # type: ignore[attr-defined]
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# TODO we might want to make this configurable for each app service
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return False
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# Support users are for diagnostics and should not appear in the user directory.
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if await self.is_support_user(user): # type: ignore[attr-defined]
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return False
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# Deactivated users aren't contactable, so should not appear in the user directory.
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try:
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if await self.get_user_deactivated_status(user): # type: ignore[attr-defined]
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return False
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except StoreError:
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# No such user in the users table. No need to do this when calling
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# is_support_user---that returns False if the user is missing.
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return False
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return True
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async def is_room_world_readable_or_publicly_joinable(self, room_id: str) -> bool:
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"""Check if the room is either world_readable or publically joinable"""
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# Create a state filter that only queries join and history state event
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types_to_filter = (
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(EventTypes.JoinRules, ""),
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(EventTypes.RoomHistoryVisibility, ""),
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)
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# Getting the partial state is fine, as we're not looking at membership
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# events.
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current_state_ids = await self.get_partial_filtered_current_state_ids( # type: ignore[attr-defined]
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room_id, StateFilter.from_types(types_to_filter)
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)
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join_rules_id = current_state_ids.get((EventTypes.JoinRules, ""))
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if join_rules_id:
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join_rule_ev = await self.get_event(join_rules_id, allow_none=True) # type: ignore[attr-defined]
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if join_rule_ev:
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if join_rule_ev.content.get("join_rule") == JoinRules.PUBLIC:
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return True
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hist_vis_id = current_state_ids.get((EventTypes.RoomHistoryVisibility, ""))
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if hist_vis_id:
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hist_vis_ev = await self.get_event(hist_vis_id, allow_none=True) # type: ignore[attr-defined]
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if hist_vis_ev:
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if (
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hist_vis_ev.content.get("history_visibility")
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== HistoryVisibility.WORLD_READABLE
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):
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return True
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return False
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|
|
async def update_profile_in_user_dir(
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self, user_id: str, display_name: Optional[str], avatar_url: Optional[str]
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) -> None:
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"""
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Update or add a user's profile in the user directory.
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"""
|
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# If the display name or avatar URL are unexpected types, replace with None.
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display_name = non_null_str_or_none(display_name)
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avatar_url = non_null_str_or_none(avatar_url)
|
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|
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def _update_profile_in_user_dir_txn(txn: LoggingTransaction) -> None:
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self.db_pool.simple_upsert_txn(
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txn,
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table="user_directory",
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keyvalues={"user_id": user_id},
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values={"display_name": display_name, "avatar_url": avatar_url},
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)
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if isinstance(self.database_engine, PostgresEngine):
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# We weight the localpart most highly, then display name and finally
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# server name
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sql = """
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INSERT INTO user_directory_search(user_id, vector)
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VALUES (?,
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setweight(to_tsvector('simple', ?), 'A')
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|| setweight(to_tsvector('simple', ?), 'D')
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|| setweight(to_tsvector('simple', COALESCE(?, '')), 'B')
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) ON CONFLICT (user_id) DO UPDATE SET vector=EXCLUDED.vector
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"""
|
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txn.execute(
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sql,
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(
|
|
user_id,
|
|
get_localpart_from_id(user_id),
|
|
get_domain_from_id(user_id),
|
|
display_name,
|
|
),
|
|
)
|
|
elif isinstance(self.database_engine, Sqlite3Engine):
|
|
value = "%s %s" % (user_id, display_name) if display_name else user_id
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
table="user_directory_search",
|
|
keyvalues={"user_id": user_id},
|
|
values={"value": value},
|
|
)
|
|
else:
|
|
# This should be unreachable.
|
|
raise Exception("Unrecognized database engine")
|
|
|
|
txn.call_after(self.get_user_in_directory.invalidate, (user_id,))
|
|
|
|
await self.db_pool.runInteraction(
|
|
"update_profile_in_user_dir", _update_profile_in_user_dir_txn
|
|
)
|
|
|
|
async def add_users_who_share_private_room(
|
|
self, room_id: str, user_id_tuples: Iterable[Tuple[str, str]]
|
|
) -> None:
|
|
"""Insert entries into the users_who_share_private_rooms table. The first
|
|
user should be a local user.
|
|
|
|
Args:
|
|
room_id
|
|
user_id_tuples: iterable of 2-tuple of user IDs.
|
|
"""
|
|
|
|
await self.db_pool.simple_upsert_many(
|
|
table="users_who_share_private_rooms",
|
|
key_names=["user_id", "other_user_id", "room_id"],
|
|
key_values=[
|
|
(user_id, other_user_id, room_id)
|
|
for user_id, other_user_id in user_id_tuples
|
|
],
|
|
value_names=(),
|
|
value_values=(),
|
|
desc="add_users_who_share_room",
|
|
)
|
|
|
|
async def add_users_in_public_rooms(
|
|
self, room_id: str, user_ids: Iterable[str]
|
|
) -> None:
|
|
"""Insert entries into the users_in_public_rooms table.
|
|
|
|
Args:
|
|
room_id
|
|
user_ids
|
|
"""
|
|
|
|
await self.db_pool.simple_upsert_many(
|
|
table="users_in_public_rooms",
|
|
key_names=["user_id", "room_id"],
|
|
key_values=[(user_id, room_id) for user_id in user_ids],
|
|
value_names=(),
|
|
value_values=(),
|
|
desc="add_users_in_public_rooms",
|
|
)
|
|
|
|
async def delete_all_from_user_dir(self) -> None:
|
|
"""Delete the entire user directory"""
|
|
|
|
def _delete_all_from_user_dir_txn(txn: LoggingTransaction) -> None:
|
|
txn.execute("DELETE FROM user_directory")
|
|
txn.execute("DELETE FROM user_directory_search")
|
|
txn.execute("DELETE FROM users_in_public_rooms")
|
|
txn.execute("DELETE FROM users_who_share_private_rooms")
|
|
txn.call_after(self.get_user_in_directory.invalidate_all)
|
|
|
|
await self.db_pool.runInteraction(
|
|
"delete_all_from_user_dir", _delete_all_from_user_dir_txn
|
|
)
|
|
|
|
@cached()
|
|
async def get_user_in_directory(self, user_id: str) -> Optional[Dict[str, str]]:
|
|
return await self.db_pool.simple_select_one(
|
|
table="user_directory",
|
|
keyvalues={"user_id": user_id},
|
|
retcols=("display_name", "avatar_url"),
|
|
allow_none=True,
|
|
desc="get_user_in_directory",
|
|
)
|
|
|
|
async def update_user_directory_stream_pos(self, stream_id: Optional[int]) -> None:
|
|
await self.db_pool.simple_update_one(
|
|
table="user_directory_stream_pos",
|
|
keyvalues={},
|
|
updatevalues={"stream_id": stream_id},
|
|
desc="update_user_directory_stream_pos",
|
|
)
|
|
|
|
|
|
class SearchResult(TypedDict):
|
|
limited: bool
|
|
results: List[UserProfile]
|
|
|
|
|
|
class UserDirectoryStore(UserDirectoryBackgroundUpdateStore):
|
|
# How many records do we calculate before sending it to
|
|
# add_users_who_share_private_rooms?
|
|
SHARE_PRIVATE_WORKING_SET = 500
|
|
|
|
def __init__(
|
|
self,
|
|
database: DatabasePool,
|
|
db_conn: LoggingDatabaseConnection,
|
|
hs: "HomeServer",
|
|
) -> None:
|
|
super().__init__(database, db_conn, hs)
|
|
|
|
self._prefer_local_users_in_search = (
|
|
hs.config.userdirectory.user_directory_search_prefer_local_users
|
|
)
|
|
self._server_name = hs.config.server.server_name
|
|
|
|
async def remove_from_user_dir(self, user_id: str) -> None:
|
|
def _remove_from_user_dir_txn(txn: LoggingTransaction) -> None:
|
|
self.db_pool.simple_delete_txn(
|
|
txn, table="user_directory", keyvalues={"user_id": user_id}
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn, table="user_directory_search", keyvalues={"user_id": user_id}
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn, table="users_in_public_rooms", keyvalues={"user_id": user_id}
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"user_id": user_id},
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"other_user_id": user_id},
|
|
)
|
|
txn.call_after(self.get_user_in_directory.invalidate, (user_id,))
|
|
|
|
await self.db_pool.runInteraction(
|
|
"remove_from_user_dir", _remove_from_user_dir_txn
|
|
)
|
|
|
|
async def get_users_in_dir_due_to_room(self, room_id: str) -> Set[str]:
|
|
"""Get all user_ids that are in the room directory because they're
|
|
in the given room_id
|
|
"""
|
|
user_ids_share_pub = await self.db_pool.simple_select_onecol(
|
|
table="users_in_public_rooms",
|
|
keyvalues={"room_id": room_id},
|
|
retcol="user_id",
|
|
desc="get_users_in_dir_due_to_room",
|
|
)
|
|
|
|
user_ids_share_priv = await self.db_pool.simple_select_onecol(
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"room_id": room_id},
|
|
retcol="other_user_id",
|
|
desc="get_users_in_dir_due_to_room",
|
|
)
|
|
|
|
user_ids = set(user_ids_share_pub)
|
|
user_ids.update(user_ids_share_priv)
|
|
|
|
return user_ids
|
|
|
|
async def remove_user_who_share_room(self, user_id: str, room_id: str) -> None:
|
|
"""
|
|
Deletes entries in the users_who_share_*_rooms table. The first
|
|
user should be a local user.
|
|
|
|
Args:
|
|
user_id
|
|
room_id
|
|
"""
|
|
|
|
def _remove_user_who_share_room_txn(txn: LoggingTransaction) -> None:
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"user_id": user_id, "room_id": room_id},
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"other_user_id": user_id, "room_id": room_id},
|
|
)
|
|
self.db_pool.simple_delete_txn(
|
|
txn,
|
|
table="users_in_public_rooms",
|
|
keyvalues={"user_id": user_id, "room_id": room_id},
|
|
)
|
|
|
|
await self.db_pool.runInteraction(
|
|
"remove_user_who_share_room", _remove_user_who_share_room_txn
|
|
)
|
|
|
|
async def get_user_dir_rooms_user_is_in(self, user_id: str) -> List[str]:
|
|
"""
|
|
Returns the rooms that a user is in.
|
|
|
|
Args:
|
|
user_id: Must be a local user
|
|
|
|
Returns:
|
|
List of room IDs
|
|
"""
|
|
rows = await self.db_pool.simple_select_onecol(
|
|
table="users_who_share_private_rooms",
|
|
keyvalues={"user_id": user_id},
|
|
retcol="room_id",
|
|
desc="get_rooms_user_is_in",
|
|
)
|
|
|
|
pub_rows = await self.db_pool.simple_select_onecol(
|
|
table="users_in_public_rooms",
|
|
keyvalues={"user_id": user_id},
|
|
retcol="room_id",
|
|
desc="get_rooms_user_is_in",
|
|
)
|
|
|
|
users = set(pub_rows)
|
|
users.update(rows)
|
|
return list(users)
|
|
|
|
async def get_user_directory_stream_pos(self) -> Optional[int]:
|
|
"""
|
|
Get the stream ID of the user directory stream.
|
|
|
|
Returns:
|
|
The stream token or None if the initial background update hasn't happened yet.
|
|
"""
|
|
return await self.db_pool.simple_select_one_onecol(
|
|
table="user_directory_stream_pos",
|
|
keyvalues={},
|
|
retcol="stream_id",
|
|
desc="get_user_directory_stream_pos",
|
|
)
|
|
|
|
async def search_user_dir(
|
|
self, user_id: str, search_term: str, limit: int
|
|
) -> SearchResult:
|
|
"""Searches for users in directory
|
|
|
|
Returns:
|
|
dict of the form::
|
|
|
|
{
|
|
"limited": <bool>, # whether there were more results or not
|
|
"results": [ # Ordered by best match first
|
|
{
|
|
"user_id": <user_id>,
|
|
"display_name": <display_name>,
|
|
"avatar_url": <avatar_url>
|
|
}
|
|
]
|
|
}
|
|
"""
|
|
|
|
if self.hs.config.userdirectory.user_directory_search_all_users:
|
|
join_args = (user_id,)
|
|
where_clause = "user_id != ?"
|
|
else:
|
|
join_args = (user_id,)
|
|
where_clause = """
|
|
(
|
|
EXISTS (select 1 from users_in_public_rooms WHERE user_id = t.user_id)
|
|
OR EXISTS (
|
|
SELECT 1 FROM users_who_share_private_rooms
|
|
WHERE user_id = ? AND other_user_id = t.user_id
|
|
)
|
|
)
|
|
"""
|
|
|
|
# We allow manipulating the ranking algorithm by injecting statements
|
|
# based on config options.
|
|
additional_ordering_statements = []
|
|
ordering_arguments: Tuple[str, ...] = ()
|
|
|
|
if isinstance(self.database_engine, PostgresEngine):
|
|
full_query, exact_query, prefix_query = _parse_query_postgres(search_term)
|
|
|
|
# If enabled, this config option will rank local users higher than those on
|
|
# remote instances.
|
|
if self._prefer_local_users_in_search:
|
|
# This statement checks whether a given user's user ID contains a server name
|
|
# that matches the local server
|
|
statement = "* (CASE WHEN user_id LIKE ? THEN 2.0 ELSE 1.0 END)"
|
|
additional_ordering_statements.append(statement)
|
|
|
|
ordering_arguments += ("%:" + self._server_name,)
|
|
|
|
# We order by rank and then if they have profile info
|
|
# The ranking algorithm is hand tweaked for "best" results. Broadly
|
|
# the idea is we give a higher weight to exact matches.
|
|
# The array of numbers are the weights for the various part of the
|
|
# search: (domain, _, display name, localpart)
|
|
sql = """
|
|
SELECT d.user_id AS user_id, display_name, avatar_url
|
|
FROM user_directory_search as t
|
|
INNER JOIN user_directory AS d USING (user_id)
|
|
WHERE
|
|
%(where_clause)s
|
|
AND vector @@ to_tsquery('simple', ?)
|
|
ORDER BY
|
|
(CASE WHEN d.user_id IS NOT NULL THEN 4.0 ELSE 1.0 END)
|
|
* (CASE WHEN display_name IS NOT NULL THEN 1.2 ELSE 1.0 END)
|
|
* (CASE WHEN avatar_url IS NOT NULL THEN 1.2 ELSE 1.0 END)
|
|
* (
|
|
3 * ts_rank_cd(
|
|
'{0.1, 0.1, 0.9, 1.0}',
|
|
vector,
|
|
to_tsquery('simple', ?),
|
|
8
|
|
)
|
|
+ ts_rank_cd(
|
|
'{0.1, 0.1, 0.9, 1.0}',
|
|
vector,
|
|
to_tsquery('simple', ?),
|
|
8
|
|
)
|
|
)
|
|
%(order_case_statements)s
|
|
DESC,
|
|
display_name IS NULL,
|
|
avatar_url IS NULL
|
|
LIMIT ?
|
|
""" % {
|
|
"where_clause": where_clause,
|
|
"order_case_statements": " ".join(additional_ordering_statements),
|
|
}
|
|
args = (
|
|
join_args
|
|
+ (full_query, exact_query, prefix_query)
|
|
+ ordering_arguments
|
|
+ (limit + 1,)
|
|
)
|
|
elif isinstance(self.database_engine, Sqlite3Engine):
|
|
search_query = _parse_query_sqlite(search_term)
|
|
|
|
# If enabled, this config option will rank local users higher than those on
|
|
# remote instances.
|
|
if self._prefer_local_users_in_search:
|
|
# This statement checks whether a given user's user ID contains a server name
|
|
# that matches the local server
|
|
#
|
|
# Note that we need to include a comma at the end for valid SQL
|
|
statement = "user_id LIKE ? DESC,"
|
|
additional_ordering_statements.append(statement)
|
|
|
|
ordering_arguments += ("%:" + self._server_name,)
|
|
|
|
sql = """
|
|
SELECT d.user_id AS user_id, display_name, avatar_url
|
|
FROM user_directory_search as t
|
|
INNER JOIN user_directory AS d USING (user_id)
|
|
WHERE
|
|
%(where_clause)s
|
|
AND value MATCH ?
|
|
ORDER BY
|
|
rank(matchinfo(user_directory_search)) DESC,
|
|
%(order_statements)s
|
|
display_name IS NULL,
|
|
avatar_url IS NULL
|
|
LIMIT ?
|
|
""" % {
|
|
"where_clause": where_clause,
|
|
"order_statements": " ".join(additional_ordering_statements),
|
|
}
|
|
args = join_args + (search_query,) + ordering_arguments + (limit + 1,)
|
|
else:
|
|
# This should be unreachable.
|
|
raise Exception("Unrecognized database engine")
|
|
|
|
results = cast(
|
|
List[UserProfile],
|
|
await self.db_pool.execute(
|
|
"search_user_dir", self.db_pool.cursor_to_dict, sql, *args
|
|
),
|
|
)
|
|
|
|
limited = len(results) > limit
|
|
|
|
return {"limited": limited, "results": results[0:limit]}
|
|
|
|
|
|
def _parse_query_sqlite(search_term: str) -> str:
|
|
"""Takes a plain unicode string from the user and converts it into a form
|
|
that can be passed to database.
|
|
We use this so that we can add prefix matching, which isn't something
|
|
that is supported by default.
|
|
|
|
We specifically add both a prefix and non prefix matching term so that
|
|
exact matches get ranked higher.
|
|
"""
|
|
|
|
# Pull out the individual words, discarding any non-word characters.
|
|
results = _parse_words(search_term)
|
|
return " & ".join("(%s* OR %s)" % (result, result) for result in results)
|
|
|
|
|
|
def _parse_query_postgres(search_term: str) -> Tuple[str, str, str]:
|
|
"""Takes a plain unicode string from the user and converts it into a form
|
|
that can be passed to database.
|
|
We use this so that we can add prefix matching, which isn't something
|
|
that is supported by default.
|
|
"""
|
|
results = _parse_words(search_term)
|
|
|
|
both = " & ".join("(%s:* | %s)" % (result, result) for result in results)
|
|
exact = " & ".join("%s" % (result,) for result in results)
|
|
prefix = " & ".join("%s:*" % (result,) for result in results)
|
|
|
|
return both, exact, prefix
|
|
|
|
|
|
def _parse_words(search_term: str) -> List[str]:
|
|
"""Split the provided search string into a list of its words.
|
|
|
|
If support for ICU (International Components for Unicode) is available, use it.
|
|
Otherwise, fall back to using a regex to detect word boundaries. This latter
|
|
solution works well enough for most latin-based languages, but doesn't work as well
|
|
with other languages.
|
|
|
|
Args:
|
|
search_term: The search string.
|
|
|
|
Returns:
|
|
A list of the words in the search string.
|
|
"""
|
|
if USE_ICU:
|
|
return _parse_words_with_icu(search_term)
|
|
|
|
return re.findall(r"([\w\-]+)", search_term, re.UNICODE)
|
|
|
|
|
|
def _parse_words_with_icu(search_term: str) -> List[str]:
|
|
"""Break down the provided search string into its individual words using ICU
|
|
(International Components for Unicode).
|
|
|
|
Args:
|
|
search_term: The search string.
|
|
|
|
Returns:
|
|
A list of the words in the search string.
|
|
"""
|
|
results = []
|
|
breaker = icu.BreakIterator.createWordInstance(icu.Locale.getDefault())
|
|
breaker.setText(search_term)
|
|
i = 0
|
|
while True:
|
|
j = breaker.nextBoundary()
|
|
if j < 0:
|
|
break
|
|
|
|
result = search_term[i:j]
|
|
|
|
# libicu considers spaces and punctuation between words as words, but we don't
|
|
# want to include those in results as they would result in syntax errors in SQL
|
|
# queries (e.g. "foo bar" would result in the search query including "foo & &
|
|
# bar").
|
|
if len(re.findall(r"([\w\-]+)", result, re.UNICODE)):
|
|
results.append(result)
|
|
|
|
i = j
|
|
|
|
return results
|