mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-26 20:22:22 +00:00
![Daniel Wagner-Hall](/assets/img/avatar_default.png)
Removes device_id and ClientInfo device_id is never actually written, and the matrix.org DB has no non-null entries for it. Right now, it's just cluttering up code. This doesn't remove the columns from the database, because that's fiddly.
515 lines
16 KiB
Python
515 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014, 2015 OpenMarket 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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from twisted.internet import defer
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from .appservice import (
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ApplicationServiceStore, ApplicationServiceTransactionStore
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)
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from ._base import Cache
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from .directory import DirectoryStore
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from .events import EventsStore
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from .presence import PresenceStore
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from .profile import ProfileStore
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from .registration import RegistrationStore
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from .room import RoomStore
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from .roommember import RoomMemberStore
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from .stream import StreamStore
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from .transactions import TransactionStore
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from .keys import KeyStore
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from .event_federation import EventFederationStore
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from .pusher import PusherStore
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from .push_rule import PushRuleStore
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from .media_repository import MediaRepositoryStore
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from .rejections import RejectionsStore
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from .state import StateStore
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from .signatures import SignatureStore
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from .filtering import FilteringStore
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from .end_to_end_keys import EndToEndKeyStore
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from .receipts import ReceiptsStore
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import fnmatch
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import imp
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import logging
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import os
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import re
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logger = logging.getLogger(__name__)
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# Remember to update this number every time a change is made to database
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# schema files, so the users will be informed on server restarts.
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SCHEMA_VERSION = 23
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dir_path = os.path.abspath(os.path.dirname(__file__))
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# Number of msec of granularity to store the user IP 'last seen' time. Smaller
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# times give more inserts into the database even for readonly API hits
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# 120 seconds == 2 minutes
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LAST_SEEN_GRANULARITY = 120*1000
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class DataStore(RoomMemberStore, RoomStore,
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RegistrationStore, StreamStore, ProfileStore,
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PresenceStore, TransactionStore,
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DirectoryStore, KeyStore, StateStore, SignatureStore,
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ApplicationServiceStore,
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EventFederationStore,
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MediaRepositoryStore,
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RejectionsStore,
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FilteringStore,
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PusherStore,
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PushRuleStore,
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ApplicationServiceTransactionStore,
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EventsStore,
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ReceiptsStore,
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EndToEndKeyStore,
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):
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def __init__(self, hs):
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super(DataStore, self).__init__(hs)
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self.hs = hs
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self.min_token_deferred = self._get_min_token()
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self.min_token = None
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self.client_ip_last_seen = Cache(
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name="client_ip_last_seen",
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keylen=4,
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)
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@defer.inlineCallbacks
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def insert_client_ip(self, user, access_token, ip, user_agent):
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now = int(self._clock.time_msec())
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key = (user.to_string(), access_token, ip)
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try:
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last_seen = self.client_ip_last_seen.get(key)
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except KeyError:
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last_seen = None
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# Rate-limited inserts
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if last_seen is not None and (now - last_seen) < LAST_SEEN_GRANULARITY:
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defer.returnValue(None)
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self.client_ip_last_seen.prefill(key, now)
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# It's safe not to lock here: a) no unique constraint,
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# b) LAST_SEEN_GRANULARITY makes concurrent updates incredibly unlikely
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yield self._simple_upsert(
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"user_ips",
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keyvalues={
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"user_id": user.to_string(),
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"access_token": access_token,
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"ip": ip,
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"user_agent": user_agent,
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},
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values={
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"last_seen": now,
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},
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desc="insert_client_ip",
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lock=False,
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)
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def get_user_ip_and_agents(self, user):
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return self._simple_select_list(
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table="user_ips",
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keyvalues={"user_id": user.to_string()},
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retcols=[
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"access_token", "ip", "user_agent", "last_seen"
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],
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desc="get_user_ip_and_agents",
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)
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def read_schema(path):
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""" Read the named database schema.
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Args:
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path: Path of the database schema.
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Returns:
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A string containing the database schema.
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"""
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with open(path) as schema_file:
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return schema_file.read()
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class PrepareDatabaseException(Exception):
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pass
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class UpgradeDatabaseException(PrepareDatabaseException):
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pass
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def prepare_database(db_conn, database_engine):
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"""Prepares a database for usage. Will either create all necessary tables
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or upgrade from an older schema version.
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"""
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try:
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cur = db_conn.cursor()
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version_info = _get_or_create_schema_state(cur, database_engine)
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if version_info:
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user_version, delta_files, upgraded = version_info
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_upgrade_existing_database(
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cur, user_version, delta_files, upgraded, database_engine
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)
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else:
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_setup_new_database(cur, database_engine)
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# cur.execute("PRAGMA user_version = %d" % (SCHEMA_VERSION,))
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cur.close()
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db_conn.commit()
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except:
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db_conn.rollback()
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raise
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def _setup_new_database(cur, database_engine):
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"""Sets up the database by finding a base set of "full schemas" and then
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applying any necessary deltas.
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The "full_schemas" directory has subdirectories named after versions. This
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function searches for the highest version less than or equal to
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`SCHEMA_VERSION` and executes all .sql files in that directory.
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The function will then apply all deltas for all versions after the base
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version.
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Example directory structure:
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schema/
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delta/
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...
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full_schemas/
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3/
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test.sql
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...
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11/
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foo.sql
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bar.sql
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...
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In the example foo.sql and bar.sql would be run, and then any delta files
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for versions strictly greater than 11.
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"""
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current_dir = os.path.join(dir_path, "schema", "full_schemas")
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directory_entries = os.listdir(current_dir)
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valid_dirs = []
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pattern = re.compile(r"^\d+(\.sql)?$")
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for filename in directory_entries:
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match = pattern.match(filename)
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abs_path = os.path.join(current_dir, filename)
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if match and os.path.isdir(abs_path):
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ver = int(match.group(0))
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if ver <= SCHEMA_VERSION:
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valid_dirs.append((ver, abs_path))
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else:
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logger.warn("Unexpected entry in 'full_schemas': %s", filename)
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if not valid_dirs:
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raise PrepareDatabaseException(
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"Could not find a suitable base set of full schemas"
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)
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max_current_ver, sql_dir = max(valid_dirs, key=lambda x: x[0])
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logger.debug("Initialising schema v%d", max_current_ver)
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directory_entries = os.listdir(sql_dir)
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for filename in fnmatch.filter(directory_entries, "*.sql"):
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sql_loc = os.path.join(sql_dir, filename)
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logger.debug("Applying schema %s", sql_loc)
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executescript(cur, sql_loc)
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cur.execute(
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database_engine.convert_param_style(
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"INSERT INTO schema_version (version, upgraded)"
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" VALUES (?,?)"
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),
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(max_current_ver, False,)
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)
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_upgrade_existing_database(
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cur,
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current_version=max_current_ver,
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applied_delta_files=[],
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upgraded=False,
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database_engine=database_engine,
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)
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def _upgrade_existing_database(cur, current_version, applied_delta_files,
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upgraded, database_engine):
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"""Upgrades an existing database.
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Delta files can either be SQL stored in *.sql files, or python modules
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in *.py.
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There can be multiple delta files per version. Synapse will keep track of
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which delta files have been applied, and will apply any that haven't been
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even if there has been no version bump. This is useful for development
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where orthogonal schema changes may happen on separate branches.
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Different delta files for the same version *must* be orthogonal and give
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the same result when applied in any order. No guarantees are made on the
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order of execution of these scripts.
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This is a no-op of current_version == SCHEMA_VERSION.
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Example directory structure:
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schema/
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delta/
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11/
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foo.sql
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...
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12/
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foo.sql
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bar.py
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...
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full_schemas/
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...
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In the example, if current_version is 11, then foo.sql will be run if and
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only if `upgraded` is True. Then `foo.sql` and `bar.py` would be run in
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some arbitrary order.
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Args:
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cur (Cursor)
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current_version (int): The current version of the schema.
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applied_delta_files (list): A list of deltas that have already been
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applied.
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upgraded (bool): Whether the current version was generated by having
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applied deltas or from full schema file. If `True` the function
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will never apply delta files for the given `current_version`, since
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the current_version wasn't generated by applying those delta files.
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"""
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if current_version > SCHEMA_VERSION:
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raise ValueError(
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"Cannot use this database as it is too " +
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"new for the server to understand"
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)
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start_ver = current_version
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if not upgraded:
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start_ver += 1
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logger.debug("applied_delta_files: %s", applied_delta_files)
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for v in range(start_ver, SCHEMA_VERSION + 1):
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logger.debug("Upgrading schema to v%d", v)
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delta_dir = os.path.join(dir_path, "schema", "delta", str(v))
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try:
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directory_entries = os.listdir(delta_dir)
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except OSError:
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logger.exception("Could not open delta dir for version %d", v)
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raise UpgradeDatabaseException(
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"Could not open delta dir for version %d" % (v,)
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)
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directory_entries.sort()
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for file_name in directory_entries:
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relative_path = os.path.join(str(v), file_name)
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logger.debug("Found file: %s", relative_path)
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if relative_path in applied_delta_files:
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continue
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absolute_path = os.path.join(
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dir_path, "schema", "delta", relative_path,
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)
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root_name, ext = os.path.splitext(file_name)
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if ext == ".py":
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# This is a python upgrade module. We need to import into some
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# package and then execute its `run_upgrade` function.
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module_name = "synapse.storage.v%d_%s" % (
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v, root_name
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)
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with open(absolute_path) as python_file:
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module = imp.load_source(
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module_name, absolute_path, python_file
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)
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logger.debug("Running script %s", relative_path)
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module.run_upgrade(cur, database_engine)
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elif ext == ".pyc":
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# Sometimes .pyc files turn up anyway even though we've
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# disabled their generation; e.g. from distribution package
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# installers. Silently skip it
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pass
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elif ext == ".sql":
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# A plain old .sql file, just read and execute it
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logger.debug("Applying schema %s", relative_path)
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executescript(cur, absolute_path)
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else:
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# Not a valid delta file.
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logger.warn(
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"Found directory entry that did not end in .py or"
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" .sql: %s",
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relative_path,
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)
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continue
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# Mark as done.
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cur.execute(
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database_engine.convert_param_style(
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"INSERT INTO applied_schema_deltas (version, file)"
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" VALUES (?,?)",
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),
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(v, relative_path)
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)
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cur.execute("DELETE FROM schema_version")
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cur.execute(
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database_engine.convert_param_style(
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"INSERT INTO schema_version (version, upgraded)"
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" VALUES (?,?)",
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),
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(v, True)
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)
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def get_statements(f):
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statement_buffer = ""
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in_comment = False # If we're in a /* ... */ style comment
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for line in f:
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line = line.strip()
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if in_comment:
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# Check if this line contains an end to the comment
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comments = line.split("*/", 1)
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if len(comments) == 1:
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continue
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line = comments[1]
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in_comment = False
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# Remove inline block comments
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line = re.sub(r"/\*.*\*/", " ", line)
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# Does this line start a comment?
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comments = line.split("/*", 1)
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if len(comments) > 1:
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line = comments[0]
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in_comment = True
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# Deal with line comments
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line = line.split("--", 1)[0]
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line = line.split("//", 1)[0]
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# Find *all* semicolons. We need to treat first and last entry
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# specially.
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statements = line.split(";")
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# We must prepend statement_buffer to the first statement
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first_statement = "%s %s" % (
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statement_buffer.strip(),
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statements[0].strip()
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)
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statements[0] = first_statement
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# Every entry, except the last, is a full statement
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for statement in statements[:-1]:
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yield statement.strip()
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# The last entry did *not* end in a semicolon, so we store it for the
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# next semicolon we find
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statement_buffer = statements[-1].strip()
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def executescript(txn, schema_path):
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with open(schema_path, 'r') as f:
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for statement in get_statements(f):
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txn.execute(statement)
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def _get_or_create_schema_state(txn, database_engine):
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# Bluntly try creating the schema_version tables.
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schema_path = os.path.join(
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dir_path, "schema", "schema_version.sql",
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)
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executescript(txn, schema_path)
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txn.execute("SELECT version, upgraded FROM schema_version")
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row = txn.fetchone()
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current_version = int(row[0]) if row else None
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upgraded = bool(row[1]) if row else None
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if current_version:
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txn.execute(
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database_engine.convert_param_style(
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"SELECT file FROM applied_schema_deltas WHERE version >= ?"
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),
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(current_version,)
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)
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applied_deltas = [d for d, in txn.fetchall()]
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return current_version, applied_deltas, upgraded
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return None
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def prepare_sqlite3_database(db_conn):
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"""This function should be called before `prepare_database` on sqlite3
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databases.
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Since we changed the way we store the current schema version and handle
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updates to schemas, we need a way to upgrade from the old method to the
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new. This only affects sqlite databases since they were the only ones
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supported at the time.
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"""
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with db_conn:
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schema_path = os.path.join(
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dir_path, "schema", "schema_version.sql",
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)
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create_schema = read_schema(schema_path)
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db_conn.executescript(create_schema)
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c = db_conn.execute("SELECT * FROM schema_version")
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rows = c.fetchall()
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c.close()
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if not rows:
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c = db_conn.execute("PRAGMA user_version")
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row = c.fetchone()
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c.close()
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if row and row[0]:
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db_conn.execute(
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"REPLACE INTO schema_version (version, upgraded)"
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" VALUES (?,?)",
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(row[0], False)
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)
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def are_all_users_on_domain(txn, database_engine, domain):
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sql = database_engine.convert_param_style(
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"SELECT COUNT(*) FROM users WHERE name NOT LIKE ?"
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)
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pat = "%:" + domain
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txn.execute(sql, (pat,))
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num_not_matching = txn.fetchall()[0][0]
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if num_not_matching == 0:
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return True
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return False
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