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Fix synapse failing to start when python module sqlite3 is not installed #12974
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Fix synapse failing to start when python module sqlite3 is not installed #12974
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H-Shay
commented
Jun 7, 2022
synapse/storage/engines/postgres.py
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| import logging | ||
| from typing import TYPE_CHECKING, Any, Mapping, NoReturn, Optional, Tuple, cast | ||
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| import psycopg2 |
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I reverted this change in c92f2f7 as it was causing errors.
DMRobertson
reviewed
Jun 7, 2022
| c.execute(sql) | ||
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| if isinstance(self.db_pool.engine, engines.PostgresEngine): | ||
| if isinstance(self.db_pool.engine, engines.postgres.PostgresEngine): |
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Oh bugger. I forgot that we use isinstance everywhere, which means that PostgresEngine and SqliteEngine need to be importable everywhere.
Argh. Maybe my advice in #12962 was wrong.
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This PR fixes a regression introduced 1.60.0 wherein synapse will refuse to start if the python module sqlite3 is not installed, even if Postgres is being used. Apparently some versions of python don't have sqlite3 available. This PR shifts the import statements behind a conditional guard. Fixes #12962. Reviewable commit-by-commit.