Revolt Backend
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[](https://github.com/revoltchat/backend/blob/main/LICENSE)
The services and libraries that power the Revolt service.
| Crate | Path | Description | |
| ------------------ | -------------------------------------------------- | ----------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `core/config` | [crates/core/config](crates/core/config) | Core: Configuration |     |
| `core/database` | [crates/core/database](crates/core/database) | Core: Database Implementation |     |
| `core/files` | [crates/core/files](crates/core/files) | Core: S3 and encryption subroutines |     |
| `core/models` | [crates/core/models](crates/core/models) | Core: API Models |     |
| `core/permissions` | [crates/core/permissions](crates/core/permissions) | Core: Permission Logic |     |
| `core/presence` | [crates/core/presence](crates/core/presence) | Core: User Presence |     |
| `core/result` | [crates/core/result](crates/core/result) | Core: Result and Error types |     |
| `core/coalesced` | [crates/core/coalesced](crates/core/coalesced) | Core: Coalescion service |     |
| `delta` | [crates/delta](crates/delta) | REST API server |  |
| `bonfire` | [crates/bonfire](crates/bonfire) | WebSocket events server |  |
| `services/january` | [crates/services/january](crates/services/january) | Proxy server |  |
| `services/gifbox` | [crates/services/gifbox](crates/services/gifbox) | Tenor proxy server |  |
| `services/autumn` | [crates/services/autumn](crates/services/autumn) | File server |  |
| `daemons/crond` | [crates/daemons/crond](crates/daemons/crond) | Timed data clean up daemon server |  |
| `daemons/pushd` | [crates/daemons/pushd](crates/daemons/pushd) | Push notification daemon server |  |
## Minimum Supported Rust Version
Rust 1.86.0 or higher.
> [!CAUTION]
> The events server has a significant performance regression between Rust 1.77.2 and 1.78.0 onwards, see [issue #341](https://github.com/revoltchat/backend/issues/341). This is currently solved by build time options but we are looking for a proper fix.
## Development Guide
Before contributing, make yourself familiar with [our contribution guidelines](https://developers.revolt.chat/contrib.html) and the [technical documentation for this project](https://revoltchat.github.io/backend/).
Before getting started, you'll want to install:
- Rust toolchain (rustup recommended)
- Docker
- Git
- mold (optional, faster compilation)
> A **default.nix** is available for Nix users!
> Just run `nix-shell` and continue.
As a heads-up, the development environment uses the following ports:
| Service | Port |
| ------------------------- | :------------: |
| MongoDB | 27017 |
| Redis | 6379 |
| MinIO | 14009 |
| Maildev | 14025
14080 |
| Revolt Web App | 14701 |
| RabbitMQ | 5672
15672 |
| `crates/delta` | 14702 |
| `crates/bonfire` | 14703 |
| `crates/services/autumn` | 14704 |
| `crates/services/january` | 14705 |
| `crates/services/gifbox` | 14706 |
Now you can clone and build the project:
```bash
git clone https://github.com/revoltchat/backend revolt-backend
cd revolt-backend
cargo build
```
A default configuration `Revolt.toml` is present in this project that is suited for development.
If you'd like to change anything, create a `Revolt.overrides.toml` file and specify relevant variables.
> [!TIP]
> Use Sentry to catch unexpected service errors:
>
> ```toml
> # Revolt.overrides.toml
> [sentry]
> api = "https://abc@your.sentry/1"
> events = "https://abc@your.sentry/1"
> files = "https://abc@your.sentry/1"
> proxy = "https://abc@your.sentry/1"
> ```
> [!TIP]
> If you have port conflicts on common services, you can try the following:
>
> ```yaml
> # compose.override.yml
> services:
> redis:
> ports: !override
> - "14079:6379"
>
> database:
> ports: !override
> - "14017:27017"
>
> rabbit:
> ports: !override
> - "14072:5672"
> - "14672:15672"
> ```
>
> And corresponding Revolt configuration:
>
> ```toml
> # Revolt.overrides.toml
> # and Revolt.test-overrides.toml
> [database]
> mongodb = "mongodb://127.0.0.1:14017"
> redis = "redis://127.0.0.1:14079/"
>
> [rabbit]
> port = 14072
> ```
Then continue:
```bash
# start other necessary services
docker compose up -d
# run everything together
./scripts/start.sh
# .. or individually
# run the API server
cargo run --bin revolt-delta
# run the events server
cargo run --bin revolt-bonfire
# run the file server
cargo run --bin revolt-autumn
# run the proxy server
cargo run --bin revolt-january
# run the tenor proxy
cargo run --bin revolt-gifbox
# run the push daemon (not usually needed in regular development)
cargo run --bin revolt-pushd
# hint:
# mold -run
# mold -run ./scripts/start.sh
```
You can start a web client by doing the following:
```bash
# if you do not have yarn yet and have a modern Node.js:
corepack enable
# clone the web client and run it:
git clone --recursive https://github.com/revoltchat/revite
cd revite
yarn
yarn build:deps
echo "VITE_API_URL=http://local.revolt.chat:14702" > .env.local
yarn dev --port 14701
```
Then go to http://local.revolt.chat:14701 to create an account/login.
When signing up, go to http://localhost:14080 to find confirmation/password reset emails.
## Deployment Guide
### Cutting new crate releases
Begin by bumping crate versions:
```bash
just patch # 0.0.X
just minor # 0.X.0
just major # X.0.0
```
Then commit the changes to package files.
Proceed to publish all the new crates:
```bash
just publish
```
### Cutting new binary releases
Tag and push a new release by running:
```bash
just release
```
If you have bumped the crate versions, proceed to [GitHub releases](https://github.com/revoltchat/backend/releases/new) to create a changelog.
## Testing
First, start the required services:
```sh
docker compose -f docker-compose.db.yml up -d
```
Now run tests for whichever database:
```sh
TEST_DB=REFERENCE cargo nextest run
TEST_DB=MONGODB cargo nextest run
```
## License
The Revolt backend is generally licensed under the [GNU Affero General Public License v3.0](https://github.com/revoltchat/backend/blob/master/LICENSE).
**Individual crates may supply their own licenses!**