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2 changed files with 23 additions and 5 deletions
1
changelog.d/8265.bugfix
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1
changelog.d/8265.bugfix
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Fix logstanding bug which could lead to incomplete database upgrades on SQLite.
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@ -19,12 +19,15 @@ import logging
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import os
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import re
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from collections import Counter
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from typing import TextIO
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from typing import Optional, TextIO
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import attr
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from synapse.config.homeserver import HomeServerConfig
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from synapse.storage.engines import BaseDatabaseEngine
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from synapse.storage.engines.postgres import PostgresEngine
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from synapse.storage.types import Cursor
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from synapse.storage.types import Connection, Cursor
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from synapse.types import Collection
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logger = logging.getLogger(__name__)
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@ -47,7 +50,12 @@ class UpgradeDatabaseException(PrepareDatabaseException):
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pass
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def prepare_database(db_conn, database_engine, config, databases=["main", "state"]):
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def prepare_database(
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db_conn: Connection,
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database_engine: BaseDatabaseEngine,
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config: Optional[HomeServerConfig],
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databases: Collection[str] = ["main", "state"],
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):
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"""Prepares a physical database for usage. Will either create all necessary tables
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or upgrade from an older schema version.
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@ -57,15 +65,24 @@ def prepare_database(db_conn, database_engine, config, databases=["main", "state
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Args:
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db_conn:
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database_engine:
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config (synapse.config.homeserver.HomeServerConfig|None):
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config :
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application config, or None if we are connecting to an existing
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database which we expect to be configured already
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databases (list[str]): The name of the databases that will be used
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databases: The name of the databases that will be used
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with this physical database. Defaults to all databases.
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"""
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try:
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cur = db_conn.cursor()
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# sqlite does not automatically start transactions for DDL / SELECT statements,
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# so we start one before running anything. This ensures that any upgrades
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# are either applied completely, or not at all.
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#
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# (psycopg2 automatically starts a transaction as soon as we run any statements
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# at all, so this is redundant but harmless there.)
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cur.execute("BEGIN TRANSACTION")
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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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