martin/README.md

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Martin is a tile server able to generate and serve [vector tiles](https://github.com/mapbox/vector-tile-spec) on the fly from large [PostGIS](https://github.com/postgis/postgis) databases, [PMTile](https://protomaps.com/blog/pmtiles-v3-whats-new) (local or remote), and [MBTile](https://github.com/mapbox/mbtiles-spec) files, allowing multiple tile sources to be dynamically combined into one. Martin optimizes for speed and heavy traffic, and is written in [Rust](https://github.com/rust-lang/rust).

Additionally, there are [several tools](https://maplibre.org/martin/tools.html) for generating tiles in bulk from any Martin-supported sources (similar to `tilelive-copy`), copying tiles between MBTiles files, creating deltas (patches) and applying them, and validating MBTiles files.

See [Martin book](https://maplibre.org/martin/) for complete documentation.

## Installation

_See [installation instructions](https://maplibre.org/martin/installation.html) in the Martin book._

**Prerequisites:** If using Martin with PostgreSQL database, you must install PostGIS with at least v3.0+, v3.1+ recommended.

You can download martin from [GitHub releases page](https://github.com/maplibre/martin/releases).

| Platform | AMD-64                                                                                           | ARM-64                              |
|----------|--------------------------------------------------------------------------------------------------|-------------------------------------|
| Linux    | [.tar.gz][rl-linux-x64] (gnu)<br>[.tar.gz][rl-linux-x64-musl] (musl)<br>[.deb][rl-linux-x64-deb] | [.tar.gz][rl-linux-a64-musl] (musl) |
| macOS    | [.tar.gz][rl-macos-x64]                                                                          | [.tar.gz][rl-macos-a64]             |
| Windows  | [.zip][rl-win64-zip]                                                                             |                                     |

[rl-linux-x64]: https://github.com/maplibre/martin/releases/latest/download/martin-x86_64-unknown-linux-gnu.tar.gz
[rl-linux-x64-musl]: https://github.com/maplibre/martin/releases/latest/download/martin-x86_64-unknown-linux-musl.tar.gz
[rl-linux-x64-deb]: https://github.com/maplibre/martin/releases/latest/download/martin-Debian-x86_64.deb
[rl-linux-a64-musl]: https://github.com/maplibre/martin/releases/latest/download/martin-aarch64-unknown-linux-musl.tar.gz
[rl-macos-x64]: https://github.com/maplibre/martin/releases/latest/download/martin-x86_64-apple-darwin.tar.gz
[rl-macos-a64]: https://github.com/maplibre/martin/releases/latest/download/martin-aarch64-apple-darwin.tar.gz
[rl-win64-zip]: https://github.com/maplibre/martin/releases/latest/download/martin-x86_64-pc-windows-msvc.zip

If you are using macOS and [Homebrew](https://brew.sh/) you can install `martin` and `mbtiles` using Homebrew tap.

```shell
brew tap maplibre/martin
brew install martin
```

## Running Martin Service

_See [running instructions](https://maplibre.org/martin/run.html) in the Martin book._

Martin supports any number of PostgreSQL/PostGIS database connections with [geospatial-enabled](https://postgis.net/docs/using_postgis_dbmanagement.html#geometry_columns) tables and tile-producing SQL functions, as well as [PMTile](https://protomaps.com/blog/pmtiles-v3-whats-new) and [MBTile](https://github.com/mapbox/mbtiles-spec) files as tile sources.

Martin can auto-discover tables and functions using a [connection string](https://maplibre.org/martin/pg-connections.html). A PG connection string can also be passed via the `DATABASE_URL` environment variable.

Each tile source will have a [TileJSON](https://github.com/mapbox/tilejson-spec) endpoint.

#### Examples

```shell
# publish all tables and functions from a single database
export DATABASE_URL="postgresql://user:password@host:port/database"
martin

# same as above, but passing connection string via CLI, together with a directory of .mbtiles/.pmtiles files
martin postgresql://user:password@host:port/database path/to/dir

# publish all discovered tables/funcs from two DBs
# and generate config file with all detected sources
martin postgres://... postgres://...  --save-config config.yaml

# use configuration file instead of auto-discovery
martin --config config.yaml
```

#### Docker Example

_See [Docker instructions](https://maplibre.org/martin/run-with-docker.html) in the Martin book._

Martin is also available as a [Docker image](https://ghcr.io/maplibre/martin). You could either share a configuration file from the host with the container via the `-v` param, or you can let Martin auto-discover all sources e.g. by passing `DATABASE_URL` or specifying the .mbtiles/.pmtiles files.

```shell
export PGPASSWORD=postgres  # secret!
docker run -p 3000:3000 \
           -e PGPASSWORD \
           -e DATABASE_URL=postgresql://user@host:port/db \
           -v /path/to/config/dir:/config \
           ghcr.io/maplibre/martin --config /config/config.yaml
```

## API

_See [API documentation](https://maplibre.org/martin/using.html) in the Martin book._

Martin data is available via the HTTP `GET` endpoints:

| URL                                     | Description                                   |
|-----------------------------------------|-----------------------------------------------|
| `/`                                     | Status text, that will eventually show web UI |
| `/catalog`                              | List of all sources                           |
| `/{sourceID}`                           | Source TileJSON                               |
| `/{sourceID}/{z}/{x}/{y}`               | Map Tiles                                     |
| `/{source1},…,{sourceN}`                | Composite Source TileJSON                     |
| `/{source1},…,{sourceN}/{z}/{x}/{y}`    | Composite Source Tiles                        |
| `/sprite/{spriteID}[@2x].{json,png}`    | Sprites (low and high DPI, index/png)         |
| `/font/{font}/{start}-{end}`            | Font source                                   |
| `/font/{font1},…,{fontN}/{start}-{end}` | Composite Font source                         |
| `/health`                               | Martin server health check: returns 200 `OK`  |

## Re-use Martin as a library

Martin can be used as a standalone server, or as a library in your own Rust application. When used as a library, you can use the following features:

* **postgres** - enable PostgreSQL/PostGIS tile sources
* **pmtiles** - enable PMTile tile sources
* **mbtiles** - enable MBTile tile sources
* **fonts** - enable font sources
* **sprites** - enable sprite sources

## Documentation

See [Martin book](https://maplibre.org/martin/) for complete documentation.

## License

Licensed under either of

* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
  at your option.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the
Apache-2.0 license, shall be dual licensed as above, without any
additional terms or conditions.