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Erik JohnstonandClaude Opus 5.5 32448196cc Drop the rust_sync gate on an unshared event cache

`rust_sync: on` was refused unless `rust_sync_allow_unshared_event_cache`
was set, because the Rust sync handler held a second copy of every event
it served. Python and Rust now share one event cache, so the gate and its
option go.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VpBQxvqZTUvHCMm3u6CR7J

2026-10-15 12:14:54 +00:00

conf

Drop the rust_sync gate on an unshared event cache

2026-10-15 12:14:54 +00:00

Dockerfile

Remove support for PostgreSQL 13 (#19170 )

2025-11-13 19:38:59 +00:00

README.md

Better complement docs (#16946 )

2024-02-20 17:14:50 +00:00

README.md

Unified Complement image for Synapse

This is an image for testing Synapse with the Complement integration test suite. It contains some insecure defaults that are only suitable for testing purposes, so please don't use this image for a production server.

This multi-purpose image is built on top of Dockerfile-workers in the parent directory and can be switched using environment variables between the following configurations:

Monolithic Synapse with SQLite (default, or SYNAPSE_COMPLEMENT_DATABASE=sqlite)
Monolithic Synapse with Postgres (SYNAPSE_COMPLEMENT_DATABASE=postgres)
Workerised Synapse with Postgres (SYNAPSE_COMPLEMENT_DATABASE=postgres and SYNAPSE_COMPLEMENT_USE_WORKERS=true)

The image is self-contained; it contains an integrated Postgres, Redis and Nginx.

How to get Complement to pass the environment variables through

To pass these environment variables, use Complement's COMPLEMENT_SHARE_ENV_PREFIX variable to configure an environment prefix to pass through, then prefix the above options with that prefix.

Example:

COMPLEMENT_SHARE_ENV_PREFIX=PASS_ PASS_SYNAPSE_COMPLEMENT_DATABASE=postgres

Consult scripts-dev/complement.sh in the repository root for a real example.

How to modify homeserver.yaml for Complement tests

It's common for MSCs to be gated behind a feature flag like this:

experimental_features:
  faster_joins: true

To modify this for the Complement image, modify ./conf/workers-shared-extra.yaml.j2. Despite the name, this will affect non-worker mode as well. Remember to rebuild the image (so don't use -e if using complement.sh).