SpacetimeDB

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Phoebe Goldman ca16958ef0 Allow layout-altering automigrations of event tables (#5269 )

# Description of Changes

This commit adds special handling in automigrations to accept a broad
set of schema- and layout-altering automigrations on event tables,
including changes that we'd reject for non-event tables like removing or
reordering columns, or layout-incompatibly changing the types of
existing columns.

This is due to a change we want to make to the ControlDB schema, where
we have a product type which is used both as a table type, and as the
column type of an event table, and we want to add an element to that
product type.

I've added a simple smoketest of the new behavior,
`automigrate_reschema_event_table_arbitrarily`. Note that I have not
tested commitlog replay of a database which has undergone one of these
migrations, which has been a common place that bugs have appeared in
similar changes in the past.

I have done a pretty lazy job with the migration plan formatter for the
new step, just printing the name of the event table which is changing,
not any information about the specific changes or the columns. This is
in an effort to save time, as we'd like to release the ControlDB change
blocked by this.

# API and ABI breaking changes

N/a

# Expected complexity level and risk

3 at least: new categories of automigrations have a high risk to
introduce commitlog replay bugs, and it's also possible I have
misunderstood or mis-remembered some of the safety invariants of the
`table` crate.

# Testing

- [x] New (minimal) smoketest.
- [x] Manually tested replay:
- Copied event table from the before version new smoketest into
module-test.
  - Published module-test.
- Replaced event table with after version, published, observed and
approved client-breaking automigration.
  - Restarted SpacetimeDB.
- Called the procedure `return_value` in the migrated module to force
commitlog replay.
- [ ] Test the ControlDB change in staging, incl. restarting the control
node.

---------

Co-authored-by: clockwork-labs-bot <clockwork-labs-bot@users.noreply.github.com>
Co-authored-by: joshua-spacetime <josh@clockworklabs.io>

2026-06-11 00:33:48 +00:00

proptest-regressions

Add schema::type_for_generate, update validation to use it (#1661 )

2024-09-11 15:38:56 -04:00

src

Allow layout-altering automigrations of event tables (#5269 )

2026-06-11 00:33:48 +00:00

tests

Case conversion tests (#4450 )

2026-04-30 09:00:13 +00:00

Cargo.toml

Implement HTTP handlers / webhooks in Rust modules (#4636 )