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Make sqlite database migrations transactional again, part two #14926

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Jan 31, 2023

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@squahtx squahtx commented Jan 26, 2023

#14910 fixed the regression introduced by #13873 where sqlite database
migrations would no longer run inside a transaction. However, it
committed the transaction before Synapse updated its bookkeeping of
which migrations have been run, which means that migrations may be run
again after they have completed successfully.

Leave the transaction open at the end of executescript, to restore the
old, correct behaviour. Also make the PostgreSQL behaviour consistent
with SQLite.

Fixes #14909.

Signed-off-by: Sean Quah [email protected]

@squahtx squahtx requested a review from a team as a code owner January 26, 2023 18:47
#14910 fixed the regression introduced by #13873 where sqlite database
migrataions would no longer run inside a transaction. However, it
committed the transaction before Synapse updated its bookkeeping of
which migrations have been run, which means that migrations may be run
again after they have completed successfully.

Leave the transaction open at the end of `executescript`, to restore the
old, correct behaviour.

Fixes #14909.

Signed-off-by: Sean Quah <[email protected]>
@squahtx squahtx force-pushed the squah/sqlite_schema_delta_transactions_2 branch from 154cf36 to 6716f8c Compare January 26, 2023 19:04
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LGTM, modulo a few questions:

tests/storage/test_database.py Show resolved Hide resolved
before and after executing the script.
Some database engines may automatically COMMIT the ongoing transaction before
executing the script in its own transaction. The script transaction is left
open and it is the responsibility of the caller to commit it.
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Some database engines may automatically COMMIT the ongoing transaction

I wonder if we should make this a hard guarantee of this function, so that we have the same semantics across postgres and sqlite.

For example, suppose we need to apply two migrations A and B to upgrade the database schema. IIUC, under postgres, synapse will run

BEGIN TRANSACTION;
...
<A>;
<B>;
COMMIT;

whereas under sqlite we will now run

BEGIN TRANSACTION;
...
COMMIT; BEGIN TRANSACTION;
<A>;
COMMIT; BEGIN TRANSACTION;
<B>;
COMMIT;

I'm not sure if that's a difference we should worry about. WDYT?

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I'm in favour of the idea. It's much easier to reason about things when both database engines behave the same way.

I gave that a go in bb340f7. Let's hope it passes CI.

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SGTM!

@squahtx squahtx changed the title Make sqlite database migrations transactional again, part two (#14910) Make sqlite database migrations transactional again, part two Jan 31, 2023
@squahtx squahtx merged commit 6d14fdc into develop Jan 31, 2023
@squahtx squahtx deleted the squah/sqlite_schema_delta_transactions_2 branch January 31, 2023 11:03
Fizzadar added a commit to beeper/synapse-legacy-fork that referenced this pull request Feb 20, 2023
Synapse 1.77.0 (2023-02-14)
===========================

No significant changes since 1.77.0rc2.

Synapse 1.77.0rc2 (2023-02-10)
==============================

Bugfixes
--------

- Fix bug where retried replication requests would return a failure. Introduced in v1.76.0. ([\matrix-org#15024](matrix-org#15024))

Internal Changes
----------------

- Prepare for future database schema changes. ([\matrix-org#15036](matrix-org#15036))

Synapse 1.77.0rc1 (2023-02-07)
==============================

Features
--------

- Experimental support for [MSC3952](matrix-org/matrix-spec-proposals#3952): intentional mentions. ([\matrix-org#14823](matrix-org#14823), [\matrix-org#14943](matrix-org#14943), [\matrix-org#14957](matrix-org#14957), [\matrix-org#14958](matrix-org#14958))
- Experimental support to suppress notifications from message edits ([MSC3958](matrix-org/matrix-spec-proposals#3958)). ([\matrix-org#14960](matrix-org#14960), [\matrix-org#15016](matrix-org#15016))
- Add profile information, devices and connections to the command line [user data export tool](https://matrix-org.github.io/synapse/v1.77/usage/administration/admin_faq.html#how-can-i-export-user-data). ([\matrix-org#14894](matrix-org#14894))
- Improve performance when joining or sending an event in large rooms. ([\matrix-org#14962](matrix-org#14962))
- Improve performance of joining and leaving large rooms with many local users. ([\matrix-org#14971](matrix-org#14971))

Bugfixes
--------

- Fix a bug introduced in Synapse 1.53.0 where `next_batch` tokens from `/sync` could not be used with the `/relations` endpoint. ([\matrix-org#14866](matrix-org#14866))
- Fix a bug introduced in Synapse 1.35.0 where the module API's `send_local_online_presence_to` would fail to send presence updates over federation. ([\matrix-org#14880](matrix-org#14880))
- Fix a bug introduced in Synapse 1.70.0 where the background updates to add non-thread unique indexes on receipts could fail when upgrading from 1.67.0 or earlier. ([\matrix-org#14915](matrix-org#14915))
- Fix a regression introduced in Synapse 1.69.0 which can result in database corruption when database migrations are interrupted on sqlite. ([\matrix-org#14926](matrix-org#14926))
- Fix a bug introduced in Synapse 1.68.0 where we were unable to service remote joins in rooms with `@room` notification levels set to `null` in their (malformed) power levels. ([\matrix-org#14942](matrix-org#14942))
- Fix a bug introduced in Synapse 1.64.0 where boolean power levels were erroneously permitted in [v10 rooms](https://spec.matrix.org/v1.5/rooms/v10/). ([\matrix-org#14944](matrix-org#14944))
- Fix a long-standing bug where sending messages on servers with presence enabled would spam "Re-starting finished log context" log lines. ([\matrix-org#14947](matrix-org#14947))
- Fix a bug introduced in Synapse 1.68.0 where logging from the Rust module was not properly logged. ([\matrix-org#14976](matrix-org#14976))
- Fix various long-standing bugs in Synapse's config, event and request handling where booleans were unintentionally accepted where an integer was expected. ([\matrix-org#14945](matrix-org#14945))

Internal Changes
----------------

- Add missing type hints. ([\matrix-org#14879](matrix-org#14879), [\matrix-org#14886](matrix-org#14886), [\matrix-org#14887](matrix-org#14887), [\matrix-org#14904](matrix-org#14904), [\matrix-org#14927](matrix-org#14927), [\matrix-org#14956](matrix-org#14956), [\matrix-org#14983](matrix-org#14983), [\matrix-org#14984](matrix-org#14984), [\matrix-org#14985](matrix-org#14985), [\matrix-org#14987](matrix-org#14987), [\matrix-org#14988](matrix-org#14988), [\matrix-org#14990](matrix-org#14990), [\matrix-org#14991](matrix-org#14991), [\matrix-org#14992](matrix-org#14992), [\matrix-org#15007](matrix-org#15007))
- Use `StrCollection` to avoid potential bugs with `Collection[str]`. ([\matrix-org#14922](matrix-org#14922))
- Allow running the complement tests suites with the asyncio reactor enabled. ([\matrix-org#14858](matrix-org#14858))
- Improve performance of `/sync` in a few situations. ([\matrix-org#14908](matrix-org#14908), [\matrix-org#14970](matrix-org#14970))
- Document how to handle Dependabot pull requests. ([\matrix-org#14916](matrix-org#14916))
- Fix typo in release script. ([\matrix-org#14920](matrix-org#14920))
- Update build system requirements to allow building with poetry-core 1.5.0. ([\matrix-org#14949](matrix-org#14949), [\matrix-org#15019](matrix-org#15019))
- Add an [lnav](https://lnav.org) config file for Synapse logs to `/contrib/lnav`. ([\matrix-org#14953](matrix-org#14953))
- Faster joins: Refactor internal handling of servers in room to never store an empty list. ([\matrix-org#14954](matrix-org#14954))
- Faster joins: tag `v2/send_join/` requests to indicate if they served a partial join response. ([\matrix-org#14950](matrix-org#14950))
- Allow running `cargo` without the `extension-module` option. ([\matrix-org#14965](matrix-org#14965))
- Preparatory work for adding a denormalised event stream ordering column in the future. Contributed by Nick @ Beeper (@Fizzadar). ([\matrix-org#14979](matrix-org#14979), [9cd7610](matrix-org@9cd7610), [f10caa7](matrix-org@f10caa7); see [\matrix-org#15014](matrix-org#15014))
- Add tests for `_flatten_dict`. ([\matrix-org#14981](matrix-org#14981), [\matrix-org#15002](matrix-org#15002))

<details><summary>Dependabot updates</summary>

- Bump dtolnay/rust-toolchain from e645b0cf01249a964ec099494d38d2da0f0b349f to 9cd00a88a73addc8617065438eff914dd08d0955. ([\matrix-org#14968](matrix-org#14968))
- Bump docker/build-push-action from 3 to 4. ([\matrix-org#14952](matrix-org#14952))
- Bump ijson from 3.1.4 to 3.2.0.post0. ([\matrix-org#14935](matrix-org#14935))
- Bump types-pyyaml from 6.0.12.2 to 6.0.12.3. ([\matrix-org#14936](matrix-org#14936))
- Bump types-jsonschema from 4.17.0.2 to 4.17.0.3. ([\matrix-org#14937](matrix-org#14937))
- Bump types-pillow from 9.4.0.3 to 9.4.0.5. ([\matrix-org#14938](matrix-org#14938))
- Bump hiredis from 2.0.0 to 2.1.1. ([\matrix-org#14939](matrix-org#14939))
- Bump hiredis from 2.1.1 to 2.2.1. ([\matrix-org#14993](matrix-org#14993))
- Bump types-setuptools from 65.6.0.3 to 67.1.0.0. ([\matrix-org#14994](matrix-org#14994))
- Bump prometheus-client from 0.15.0 to 0.16.0. ([\matrix-org#14995](matrix-org#14995))
- Bump anyhow from 1.0.68 to 1.0.69. ([\matrix-org#14996](matrix-org#14996))
- Bump serde_json from 1.0.91 to 1.0.92. ([\matrix-org#14997](matrix-org#14997))
- Bump isort from 5.11.4 to 5.11.5. ([\matrix-org#14998](matrix-org#14998))
- Bump phonenumbers from 8.13.4 to 8.13.5. ([\matrix-org#14999](matrix-org#14999))
</details>

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# Conflicts:
#	docker/Dockerfile
#	poetry.lock
#	rust/src/push/base_rules.rs
#	rust/src/push/evaluator.rs
#	rust/src/push/mod.rs
#	synapse/config/experimental.py
#	synapse/event_auth.py
#	synapse/handlers/message.py
#	synapse/handlers/pagination.py
#	synapse/push/bulk_push_rule_evaluator.py
#	synapse/rest/admin/rooms.py
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#	synapse/storage/databases/main/roommember.py
#	tests/push/test_push_rule_evaluator.py
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Mar 1, 2023
Synapse 1.77.0 (2023-02-14)
===========================

No significant changes since 1.77.0rc2.


Synapse 1.77.0rc2 (2023-02-10)
==============================

Bugfixes
--------

- Fix bug where retried replication requests would return a failure. Introduced in v1.76.0. ([\#15024](matrix-org/synapse#15024))


Internal Changes
----------------

- Prepare for future database schema changes. ([\#15036](matrix-org/synapse#15036))


Synapse 1.77.0rc1 (2023-02-07)
==============================

Features
--------

- Experimental support for [MSC3952](matrix-org/matrix-spec-proposals#3952): intentional mentions. ([\#14823](matrix-org/synapse#14823), [\#14943](matrix-org/synapse#14943), [\#14957](matrix-org/synapse#14957), [\#14958](matrix-org/synapse#14958))
- Experimental support to suppress notifications from message edits ([MSC3958](matrix-org/matrix-spec-proposals#3958)). ([\#14960](matrix-org/synapse#14960), [\#15016](matrix-org/synapse#15016))
- Add profile information, devices and connections to the command line [user data export tool](https://matrix-org.github.io/synapse/v1.77/usage/administration/admin_faq.html#how-can-i-export-user-data). ([\#14894](matrix-org/synapse#14894))
- Improve performance when joining or sending an event in large rooms. ([\#14962](matrix-org/synapse#14962))
- Improve performance of joining and leaving large rooms with many local users. ([\#14971](matrix-org/synapse#14971))


Bugfixes
--------

- Fix a bug introduced in Synapse 1.53.0 where `next_batch` tokens from `/sync` could not be used with the `/relations` endpoint. ([\#14866](matrix-org/synapse#14866))
- Fix a bug introduced in Synapse 1.35.0 where the module API's `send_local_online_presence_to` would fail to send presence updates over federation. ([\#14880](matrix-org/synapse#14880))
- Fix a bug introduced in Synapse 1.70.0 where the background updates to add non-thread unique indexes on receipts could fail when upgrading from 1.67.0 or earlier. ([\#14915](matrix-org/synapse#14915))
- Fix a regression introduced in Synapse 1.69.0 which can result in database corruption when database migrations are interrupted on sqlite. ([\#14926](matrix-org/synapse#14926))
- Fix a bug introduced in Synapse 1.68.0 where we were unable to service remote joins in rooms with `@room` notification levels set to `null` in their (malformed) power levels. ([\#14942](matrix-org/synapse#14942))
- Fix a bug introduced in Synapse 1.64.0 where boolean power levels were erroneously permitted in [v10 rooms](https://spec.matrix.org/v1.5/rooms/v10/). ([\#14944](matrix-org/synapse#14944))
- Fix a long-standing bug where sending messages on servers with presence enabled would spam "Re-starting finished log context" log lines. ([\#14947](matrix-org/synapse#14947))
- Fix a bug introduced in Synapse 1.68.0 where logging from the Rust module was not properly logged. ([\#14976](matrix-org/synapse#14976))
- Fix various long-standing bugs in Synapse's config, event and request handling where booleans were unintentionally accepted where an integer was expected. ([\#14945](matrix-org/synapse#14945))


Internal Changes
----------------

- Add missing type hints. ([\#14879](matrix-org/synapse#14879), [\#14886](matrix-org/synapse#14886), [\#14887](matrix-org/synapse#14887), [\#14904](matrix-org/synapse#14904), [\#14927](matrix-org/synapse#14927), [\#14956](matrix-org/synapse#14956), [\#14983](matrix-org/synapse#14983), [\#14984](matrix-org/synapse#14984), [\#14985](matrix-org/synapse#14985), [\#14987](matrix-org/synapse#14987), [\#14988](matrix-org/synapse#14988), [\#14990](matrix-org/synapse#14990), [\#14991](matrix-org/synapse#14991), [\#14992](matrix-org/synapse#14992), [\#15007](matrix-org/synapse#15007))
- Use `StrCollection` to avoid potential bugs with `Collection[str]`. ([\#14922](matrix-org/synapse#14922))
- Allow running the complement tests suites with the asyncio reactor enabled. ([\#14858](matrix-org/synapse#14858))
- Improve performance of `/sync` in a few situations. ([\#14908](matrix-org/synapse#14908), [\#14970](matrix-org/synapse#14970))
- Document how to handle Dependabot pull requests. ([\#14916](matrix-org/synapse#14916))
- Fix typo in release script. ([\#14920](matrix-org/synapse#14920))
- Update build system requirements to allow building with poetry-core 1.5.0. ([\#14949](matrix-org/synapse#14949), [\#15019](matrix-org/synapse#15019))
- Add an [lnav](https://lnav.org) config file for Synapse logs to `/contrib/lnav`. ([\#14953](matrix-org/synapse#14953))
- Faster joins: Refactor internal handling of servers in room to never store an empty list. ([\#14954](matrix-org/synapse#14954))
- Faster joins: tag `v2/send_join/` requests to indicate if they served a partial join response. ([\#14950](matrix-org/synapse#14950))
- Allow running `cargo` without the `extension-module` option. ([\#14965](matrix-org/synapse#14965))
- Preparatory work for adding a denormalised event stream ordering column in the future. Contributed by Nick @ Beeper (@Fizzadar). ([\#14979](matrix-org/synapse#14979), [9cd7610](matrix-org/synapse@9cd7610), [f10caa7](matrix-org/synapse@f10caa7); see [\#15014](matrix-org/synapse#15014))
- Add tests for `_flatten_dict`. ([\#14981](matrix-org/synapse#14981), [\#15002](matrix-org/synapse#15002))

<details><summary>Locked dependency updates</summary>

- Bump dtolnay/rust-toolchain from e645b0cf01249a964ec099494d38d2da0f0b349f to 9cd00a88a73addc8617065438eff914dd08d0955. ([\#14968](matrix-org/synapse#14968))
- Bump docker/build-push-action from 3 to 4. ([\#14952](matrix-org/synapse#14952))
- Bump ijson from 3.1.4 to 3.2.0.post0. ([\#14935](matrix-org/synapse#14935))
- Bump types-pyyaml from 6.0.12.2 to 6.0.12.3. ([\#14936](matrix-org/synapse#14936))
- Bump types-jsonschema from 4.17.0.2 to 4.17.0.3. ([\#14937](matrix-org/synapse#14937))
- Bump types-pillow from 9.4.0.3 to 9.4.0.5. ([\#14938](matrix-org/synapse#14938))
- Bump hiredis from 2.0.0 to 2.1.1. ([\#14939](matrix-org/synapse#14939))
- Bump hiredis from 2.1.1 to 2.2.1. ([\#14993](matrix-org/synapse#14993))
- Bump types-setuptools from 65.6.0.3 to 67.1.0.0. ([\#14994](matrix-org/synapse#14994))
- Bump prometheus-client from 0.15.0 to 0.16.0. ([\#14995](matrix-org/synapse#14995))
- Bump anyhow from 1.0.68 to 1.0.69. ([\#14996](matrix-org/synapse#14996))
- Bump serde_json from 1.0.91 to 1.0.92. ([\#14997](matrix-org/synapse#14997))
- Bump isort from 5.11.4 to 5.11.5. ([\#14998](matrix-org/synapse#14998))
- Bump phonenumbers from 8.13.4 to 8.13.5. ([\#14999](matrix-org/synapse#14999))
</details>
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Schema deltas are no longer transactional on sqlite
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