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Kegan Dougal
15c03b9689
This implements [MSC4242: State DAGs](https://github.com/matrix-org/matrix-spec-proposals/pull/4242), without support for federation. A general overview: - It adds a new room version and new event type. - It adds a new field `calculated_auth_event_ids` to internal metadata. - It stores the state DAG via new state DAG edges / forward extremities tables. - It adds new auth rules as per the MSC. - It uses the new `prev_state_events` field instead of `prev_event_ids()` when doing state resolution. Complement tests: https://github.com/matrix-org/complement/pull/841 ### Pull Request Checklist <!-- Please read https://element-hq.github.io/synapse/latest/development/contributing_guide.html before submitting your pull request --> * [x] Pull request is based on the develop branch * [x] Pull request includes a [changelog file](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#changelog). The entry should: - Be a short description of your change which makes sense to users. "Fixed a bug that prevented receiving messages from other servers." instead of "Moved X method from `EventStore` to `EventWorkerStore`.". - Use markdown where necessary, mostly for `code blocks`. - End with either a period (.) or an exclamation mark (!). - Start with a capital letter. - Feel free to credit yourself, by adding a sentence "Contributed by @github_username." or "Contributed by [Your Name]." to the end of the entry. * [x] [Code style](https://element-hq.github.io/synapse/latest/code_style.html) is correct (run the [linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters)) --------- Co-authored-by: Eric Eastwood <erice@element.io>
Community Contributions ======================= Everything in this directory are projects submitted by the community that may be useful to others. As such, the project maintainers cannot guarantee support, stability or backwards compatibility of these projects. Files in this directory should *not* be relied on directly, as they may not continue to work or exist in future. If you wish to use any of these files then they should be copied to avoid them breaking from underneath you.