Dendrite is a second-generation Matrix homeserver written in Go!
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Add NATS JetStream support (#1866)
* Add NATS JetStream support
Update shopify/sarama

* Fix addresses

* Don't change Addresses in Defaults

* Update saramajetstream

* Add missing error check

Keep typing events for at least one minute

* Use all configured NATS addresses

* Update saramajetstream

* Try setting up with NATS

* Make sure NATS uses own persistent directory (TODO: make this configurable)

* Update go.mod/go.sum

* Jetstream package

* Various other refactoring

* Build fixes

* Config tweaks, make random jetstream storage path for CI

* Disable interest policies

* Try to sane default on jetstream base path

* Try to use in-memory for CI

* Restore storage/retention

* Update nats.go dependency

* Adapt changes to config

* Remove unneeded TopicFor

* Dep update

* Revert "Remove unneeded TopicFor"

This reverts commit f5a4e4a339b6f94ec215778dca22204adaa893d1.

* Revert changes made to streams

* Fix build problems

* Update nats-server

* Update go.mod/go.sum

* Roomserver input API queuing using NATS

* Fix topic naming

* Prometheus metrics

* More refactoring to remove saramajetstream

* Add missing topic

* Don't try to populate map that doesn't exist

* Roomserver output topic

* Update go.mod/go.sum

* Message acknowledgements

* Ack tweaks

* Try to resume transaction re-sends

* Try to resume transaction re-sends

* Update to matrix-org/gomatrixserverlib@91dadfb

* Remove internal.PartitionStorer from components that don't consume keychanges

* Try to reduce re-allocations a bit in resolveConflictsV2

* Tweak delivery options on RS input

* Publish send-to-device messages into correct JetStream subject

* Async and sync roomserver input

* Update dendrite-config.yaml

* Remove roomserver tests for now (they need rewriting)

* Remove roomserver test again (was merged back in)

* Update documentation

* Docker updates

* More Docker updates

* Update Docker readme again

* Fix lint issues

* Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset)

* Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that

* Go 1.16 instead of Go 1.13 for upgrade tests and Complement

* Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that"

This reverts commit 368675283fc44501f227639811bdb16dd5deef8c.

* Don't report any errors on `/send` to see what fun that creates

* Fix panics on closed channel sends

* Enforce state key matches sender

* Do the same for leave

* Various tweaks to make tests happier

Squashed commit of the following:

commit 13f9028e7a63662759ce7c55504a9d2423058668
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 15:47:14 2022 +0000

    Do the same for leave

commit e6be7f05c349fafbdddfe818337a17a60c867be1
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 15:33:42 2022 +0000

    Enforce state key matches sender

commit 85ede6d64bf10ce9b91cdd6d80f87350ee55242f
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 14:07:04 2022 +0000

    Fix panics on closed channel sends

commit 9755494a98bed62450f8001d8128e40481d27e15
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 13:38:22 2022 +0000

    Don't report any errors on `/send` to see what fun that creates

commit 3bb4f87b5dd56882febb4db5621db484c8789b7c
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 13:00:26 2022 +0000

    Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that"

    This reverts commit 368675283fc44501f227639811bdb16dd5deef8c.

commit fe2673ed7be9559eaca134424e403a4faca100b0
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 12:09:34 2022 +0000

    Go 1.16 instead of Go 1.13 for upgrade tests and Complement

commit 368675283fc44501f227639811bdb16dd5deef8c
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 11:51:45 2022 +0000

    Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that

commit b028dfc08577bcf52e6cb498026e15fa5d46d07c
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 10:29:08 2022 +0000

    Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset)

* Merge in NATS Server v2.6.6 and nats.go v1.13 into the in-process connection fork

* Add `jetstream.WithJetStreamMessage` to make ack/nak-ing less messy, use process context in consumers

* Fix consumer component name in  federation API

* Add comment explaining where streams are defined

* Tweaks to roomserver input with comments

* Finish that sentence that I apparently forgot to finish in INSTALL.md

* Bump version number of config to 2

* Add comments around asynchronous sends to roomserver in processEventWithMissingState

* More useful error message when the config version does not match

* Set version in generate-config

* Fix version in config.Defaults

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2022-01-05 17:44:49 +00:00
.github Set @matrix-org/dendrite-core as repository code owner 2021-12-09 13:29:49 +00:00
appservice Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
build Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
clientapi Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
cmd Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
docs Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
eduserver Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
federationapi Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
internal Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
keyserver Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
mediaapi Ratelimit requests to /media/r0/download|upload (#2020) 2021-11-24 12:55:44 +00:00
roomserver Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
setup Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
syncapi Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
test/wasm Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00
userapi Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
.dockerignore Docker Hub (#1053) 2020-05-21 13:02:28 +01:00
.gitignore Don't let things added to the media_store/ directory find their way into the repo (#2057) 2021-11-24 12:55:13 +00:00
.golangci.yml Increase gocyclo complexity to 25 (and remove all but 2 golint directives related to it) (#1783) 2021-03-03 14:35:57 +00:00
are-we-synapse-yet.list Update are-we-synapse-yet (#2018) 2021-10-25 10:08:02 +01:00
are-we-synapse-yet.py Allow partial test runs (#2076) 2021-12-20 10:26:23 +00:00
build-dendritejs.sh Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00
build.sh Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00
CHANGES.md Version 0.5.1 (#2047) 2021-11-16 11:37:03 +00:00
dendrite-config.yaml Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
go.mod Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
go.sum Add NATS JetStream support (#1866) 2022-01-05 17:44:49 +00:00
LICENSE Add Apache Version 2.0 license and headers to all golang files 2017-04-21 00:40:52 +02:00
README.md Update README.md (#2012) 2021-10-25 10:08:47 +01:00
show-expected-fail-tests.sh Fix newlines between white/blacklist test names in buildkite annotations (#1003) 2020-05-04 14:48:49 +01:00
sytest-blacklist Remove tests from the blacklist (#2031) 2021-10-29 15:01:22 +01:00
sytest-whitelist Ratelimit requests to /media/r0/download|upload (#2020) 2021-11-24 12:55:44 +00:00
test-dendritejs.sh Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00

Dendrite Build Status Dendrite Dendrite Dev

Dendrite is a second-generation Matrix homeserver written in Go. It intends to provide an efficient, reliable and scalable alternative to Synapse:

  • Efficient: A small memory footprint with better baseline performance than an out-of-the-box Synapse.
  • Reliable: Implements the Matrix specification as written, using the same test suite as Synapse as well as a brand new Go test suite.
  • Scalable: can run on multiple machines and eventually scale to massive homeserver deployments.

As of October 2020, Dendrite has now entered beta which means:

  • Dendrite is ready for early adopters. We recommend running in Monolith mode with a PostgreSQL database.
  • Dendrite has periodic semver releases. We intend to release new versions as we land significant features.
  • Dendrite supports database schema upgrades between releases. This means you should never lose your messages when upgrading Dendrite.
  • Breaking changes will not occur on minor releases. This means you can safely upgrade Dendrite without modifying your database or config file.

This does not mean:

  • Dendrite is bug-free. It has not yet been battle-tested in the real world and so will be error prone initially.
  • All of the CS/Federation APIs are implemented. We are tracking progress via a script called 'Are We Synapse Yet?'. In particular, presence and push notifications are entirely missing from Dendrite. See CHANGES.md for updates.
  • Dendrite is ready for massive homeserver deployments. You cannot shard each microservice, only run each one on a different machine.

Currently, we expect Dendrite to function well for small (10s/100s of users) homeserver deployments as well as P2P Matrix nodes in-browser or on mobile devices. In the future, we will be able to scale up to gigantic servers (equivalent to matrix.org) via polylith mode.

If you have further questions, please take a look at our FAQ or join us in:

Requirements

To build Dendrite, you will need Go 1.15 or later.

For a usable federating Dendrite deployment, you will also need:

  • A domain name (or subdomain)
  • A valid TLS certificate issued by a trusted authority for that domain
  • SRV records or a well-known file pointing to your deployment

Also recommended are:

  • A PostgreSQL database engine, which will perform better than SQLite with many users and/or larger rooms
  • A reverse proxy server, such as nginx, configured like this sample

The Federation Tester can be used to verify your deployment.

Get started

If you wish to build a fully-federating Dendrite instance, see INSTALL.md. For running in Docker, see build/docker.

The following instructions are enough to get Dendrite started as a non-federating test deployment using self-signed certificates and SQLite databases:

$ git clone https://github.com/matrix-org/dendrite
$ cd dendrite
$ ./build.sh

# Generate a Matrix signing key for federation (required)
$ ./bin/generate-keys --private-key matrix_key.pem

# Generate a self-signed certificate (optional, but a valid TLS certificate is normally
# needed for Matrix federation/clients to work properly!)
$ ./bin/generate-keys --tls-cert server.crt --tls-key server.key

# Copy and modify the config file - you'll need to set a server name and paths to the keys
# at the very least, along with setting up the database connection strings.
$ cp dendrite-config.yaml dendrite.yaml

# Build and run the server:
$ ./bin/dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml

Then point your favourite Matrix client at http://localhost:8008 or https://localhost:8448.

Progress

We use a script called Are We Synapse Yet which checks Sytest compliance rates. Sytest is a black-box homeserver test rig with around 900 tests. The script works out how many of these tests are passing on Dendrite and it updates with CI. As of November 2020 we're at around 58% CS API coverage and 83% Federation coverage, though check CI for the latest numbers. In practice, this means you can communicate locally and via federation with Synapse servers such as matrix.org reasonably well. There's a long list of features that are not implemented, notably:

  • Push
  • Search and Context
  • User Directory
  • Presence
  • Guests

We are prioritising features that will benefit single-user homeservers first (e.g Receipts, E2E) rather than features that massive deployments may be interested in (User Directory, OpenID, Guests, Admin APIs, AS API). This means Dendrite supports amongst others:

  • Core room functionality (creating rooms, invites, auth rules)
  • Federation in rooms v1-v7
  • Backfilling locally and via federation
  • Accounts, Profiles and Devices
  • Published room lists
  • Typing
  • Media APIs
  • Redaction
  • Tagging
  • E2E keys and device lists
  • Receipts

Contributing

We would be grateful for any help on issues marked as Are We Synapse Yet. These issues all have related Sytests which need to pass in order for the issue to be closed. Once you've written your code, you can quickly run Sytest to ensure that the test names are now passing.

For example, if the test Local device key changes get to remote servers was marked as failing, find the test file (e.g via grep or via the CI log output it's tests/50federation/40devicelists.pl ) then to run Sytest:

docker run --rm --name sytest
-v "/Users/kegan/github/sytest:/sytest"
-v "/Users/kegan/github/dendrite:/src"
-v "/Users/kegan/logs:/logs"
-v "/Users/kegan/go/:/gopath"
-e "POSTGRES=1" -e "DENDRITE_TRACE_HTTP=1"
matrixdotorg/sytest-dendrite:latest tests/50federation/40devicelists.pl

See sytest.md for the full description of these flags.

You can try running sytest outside of docker for faster runs, but the dependencies can be temperamental and we recommend using docker where possible.

cd sytest
export PERL5LIB=$HOME/lib/perl5
export PERL_MB_OPT=--install_base=$HOME
export PERL_MM_OPT=INSTALL_BASE=$HOME
./install-deps.pl

./run-tests.pl -I Dendrite::Monolith -d $PATH_TO_DENDRITE_BINARIES

Sometimes Sytest is testing the wrong thing or is flakey, so it will need to be patched. Ask on #dendrite-dev:matrix.org if you think this is the case for you and we'll be happy to help.

If you're new to the project, see CONTRIBUTING.md to get up to speed then look for Good First Issues. If you're familiar with the project, look for Help Wanted issues.

Hardware requirements

Dendrite in Monolith + SQLite works in a range of environments including iOS and in-browser via WASM.

For small homeserver installations joined on ~10s rooms on matrix.org with ~100s of users in those rooms, including some encrypted rooms:

  • Memory: uses around 100MB of RAM, with peaks at around 200MB.
  • Disk space: After a few months of usage, the database grew to around 2GB (in Monolith mode).
  • CPU: Brief spikes when processing events, typically idles at 1% CPU.

This means Dendrite should comfortably work on things like Raspberry Pis.