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Erik JohnstonandClaude Opus 5.5
e4e22f63e5
The first commit of phase 2 of the event persistence plan (`transaction` level). `rust/src/persist/txn/` will hold the port of `_persist_events_txn`. This commit adds its driver: the share lock on the room's `rooms` row, the cache updates Python queues for every event up front, and dropping duplicate events. It returns the events left for the steps still in Python. `tests/storage/test_rust_persist_txn.py` builds the same DAG in two rooms. Room A persists in Python. Room B prepares in Rust, runs the Rust part of the transaction in its own committed transaction through `Persister.persist_events_txn_for_test`, and then runs the Python steps after it. The test compares the rows of every table the transaction writes, after normalising room and event IDs, stream positions, state groups and chain IDs, and compares the cache updates both rooms asked for. Each later commit moves more steps from the Python half to the Rust half, in transaction order, until the facade runs the whole transaction. Mutating the driver (dropping the redaction invalidation, the relation, the state key, or the outlier rule for duplicates) fails the comparison. Two open items from phase 1: - Reads before the transaction now retry. Python runs each read in a `runInteraction` that retries a lost connection or a cancelled statement. `Persister.prepare_chunk` now prepares the whole chunk again on such an error, up to five attempts. That is safe because its only write, bumping the state groups it uses, can be repeated. The reader and the state resolution store keep the pool's error as the cause, so `is_retryable_error` can classify it. A `WriteError` does not count, as its write interaction has already retried, and `WriteError::from_pg` shares the classification. - The Rust persister needs the state tables in the main database, as it reads and writes both in one transaction. `Persister::for_homeserver` now checks for that, and the persister is off when they are apart. Also fixed in the dispatch: at `off`, `_prepare_chunk` ran Rust when a persister existed. That only happens when a test changes the level at runtime. The twin test does exactly that. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LXMkcZVkcZhi21augBff4a
.. image:: https://github.com/element-hq/synapse/raw/develop/docs/element_logo_white_bg.svg :height: 60px **Element Synapse - Matrix homeserver implementation** |support| |development| |documentation| |license| |pypi| |python| Synapse is an open source `Matrix <https://matrix.org>`__ homeserver implementation, written and maintained by `Element <https://element.io>`_. `Matrix <https://github.com/matrix-org>`__ is the open standard for secure and interoperable real-time communications. You can directly run and manage the source code in this repository, available under an AGPL license (or alternatively under a commercial license from Element). There is no support provided by Element unless you have a subscription from Element. 🚀 Getting started ================== This component is developed and maintained by `Element <https://element.io>`_. It gets shipped as part of the **Element Server Suite (ESS)** which provides the official means of deployment. ESS is a Matrix distribution from Element with focus on quality and ease of use. It ships a full Matrix stack tailored to the respective use case. There are three editions of ESS: - `ESS Community <https://github.com/element-hq/ess-helm>`_ - the free Matrix distribution from Element tailored to small-/mid-scale, non-commercial community use cases - `ESS Pro <https://element.io/server-suite>`_ - the commercial Matrix distribution from Element for professional use - `ESS TI-M <https://element.io/server-suite/ti-messenger>`_ - a special version of ESS Pro focused on the requirements of TI-Messenger Pro and ePA as specified by the German National Digital Health Agency Gematik 🛠️ Standalone installation and configuration ============================================ The Synapse documentation describes `options for installing Synapse standalone <https://element-hq.github.io/synapse/latest/setup/installation.html>`_. See below for more useful documentation links. - `Synapse configuration options <https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html>`_ - `Synapse configuration for federation <https://element-hq.github.io/synapse/latest/federate.html>`_ - `Using a reverse proxy with Synapse <https://element-hq.github.io/synapse/latest/reverse_proxy.html>`_ - `Upgrading Synapse <https://element-hq.github.io/synapse/develop/upgrade.html>`_ 🎯 Troubleshooting and support ============================== 🚀 Professional support ----------------------- Enterprise quality support for Synapse including SLAs is available as part of an `Element Server Suite (ESS) <https://element.io/pricing>`_ subscription. If you are an existing ESS subscriber then you can raise a `support request <https://customer.element.io/support>`_ and access the `Element product documentation <https://docs.element.io>`_. 🤝 Community support -------------------- The `Admin FAQ <https://element-hq.github.io/synapse/latest/usage/administration/admin_faq.html>`_ includes tips on dealing with some common problems. For more details, see `Synapse's wider documentation <https://element-hq.github.io/synapse/latest/>`_. For additional support installing or managing Synapse, please ask in the community support room |room|_ (from a matrix.org account if necessary). We do not use GitHub issues for support requests, only for bug reports and feature requests. .. |room| replace:: ``#synapse:matrix.org`` .. _room: https://matrix.to/#/#synapse:matrix.org .. |docs| replace:: ``docs`` .. _docs: docs 🛠️ Development ============== We welcome contributions to Synapse from the community! The best place to get started is our `guide for contributors <https://element-hq.github.io/synapse/latest/development/contributing_guide.html>`_. This is part of our broader `documentation <https://element-hq.github.io/synapse/latest>`_, which includes information for Synapse developers as well as Synapse administrators. Developers might be particularly interested in: * `Synapse's database schema <https://element-hq.github.io/synapse/latest/development/database_schema.html>`_, * `notes on Synapse's implementation details <https://element-hq.github.io/synapse/latest/development/internal_documentation/index.html>`_, and * `how we use git <https://element-hq.github.io/synapse/latest/development/git.html>`_. Alongside all that, join our developer community on Matrix: `#synapse-dev:matrix.org <https://matrix.to/#/#synapse-dev:matrix.org>`_, featuring real humans! 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