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Dynamically create image sprites for MapLibre rendering, given a directory with images. ### TODO * [x] Work with @flother to merge these PRs * [x] https://github.com/flother/spreet/pull/59 (must have) * [x] https://github.com/flother/spreet/pull/57 * [x] https://github.com/flother/spreet/pull/56 * [ ] https://github.com/flother/spreet/pull/62 (not required but nice to have, can upgrade later without any code changes) * [x] Add docs to the book * [x] Add CLI param, e.g. `--sprite <dir_path>` * [x] Don't output `.sprites` in auto-genned config when not in use ### API Per [MapLibre sprites API](https://maplibre.org/maplibre-style-spec/sprite/), we need to support the following: * `/sprite/<sprite_id>.json` metadata about the sprite file - all coming from a single directory * `/sprite/<sprite_id>.png` all images combined into a single PNG * `/sprite/<sprite_id>@2x.json` same but for high DPI devices * `/sprite/<sprite_id>@2x.png` Multiple sprite_id values can be combined into one sprite with the same pattern as for tile joining: `/sprite/<sprite_id1>,<sprite_id2>,...,<sprite_idN>[.json|.png|@2x.json|@2x.png]`. No ID renaming is done, so identical names will override one another. ### Configuration [Config file](https://maplibre.org/martin/config-file.html) and possibly CLI should have a simple option to serve sprites. The configuration may look similar to how mbtiles and pmtiles are configured: ```yaml # Publish sprite images sprites: paths: # scan this whole dir, matching all image files, and publishing it as "my_images" sprite source - /path/to/my_images sources: # named source matching source name to a directory my_sprites: /path/to/some_dir ``` Implement #705
101 lines
5.5 KiB
Markdown
Executable File
101 lines
5.5 KiB
Markdown
Executable File
# Martin
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[](https://maplibre.org/martin)
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[](https://docs.rs/martin)
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[](https://slack.openstreetmap.us/)
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[](https://github.com/maplibre/martin)
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[](https://crates.io/crates/martin)
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[](https://github.com/maplibre/martin/security)
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[](https://github.com/maplibre/martin/actions)
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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), 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).
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See [Martin book](https://maplibre.org/martin/) for complete documentation.
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## Installation
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_See [installation instructions](https://maplibre.org/martin/installation.html) in the Martin book._
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**Prerequisites:** If using Martin with PostgreSQL database, you must install PostGIS with at least v3.0+, v3.1+ recommended.
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You can download martin from [GitHub releases page](https://github.com/maplibre/martin/releases).
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| Platform | Downloads (latest) |
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|----------|------------------------|
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| Linux | [64-bit][rl-linux-tar] |
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| macOS | [64-bit][rl-macos-tar] |
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| Windows | [64-bit][rl-win64-zip] |
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[rl-linux-tar]: https://github.com/maplibre/martin/releases/latest/download/martin-Linux-x86_64.tar.gz
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[rl-macos-tar]: https://github.com/maplibre/martin/releases/latest/download/martin-Darwin-x86_64.tar.gz
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[rl-win64-zip]: https://github.com/maplibre/martin/releases/latest/download/martin-Windows-x86_64.zip
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If you are using macOS and [Homebrew](https://brew.sh/) you can install martin using Homebrew tap.
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```shell
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brew tap maplibre/martin https://github.com/maplibre/martin.git
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brew install maplibre/martin/martin
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```
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## Running Martin Service
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_See [running instructions](https://maplibre.org/martin/run.html) in the Martin book._
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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.
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Martin can auto-discover tables and functions using a [connection string](https://maplibre.org/martin/PostgreSQL-Connection-String.html). A PG connection string can also be passed via the `DATABASE_URL` environment variable.
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Each tile source will have a [TileJSON](https://github.com/mapbox/tilejson-spec) endpoint.
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#### Examples
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```shell
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# publish all tables and functions from a single database
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export DATABASE_URL="postgresql://user:password@host:port/database"
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martin
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# same as above, but passing connection string via CLI, together with a directory of .mbtiles/.pmtiles files
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martin postgresql://user:password@host:port/database path/to/dir
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# publish all discovered tables/funcs from two DBs
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# and generate config file with all detected sources
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martin postgres://... postgres://... --save-config config.yaml
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# use configuration file instead of auto-discovery
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martin --config config.yaml
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```
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#### Docker Example
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_See [Docker instructions](https://maplibre.org/martin/run-with-docker.html) in the Martin book._
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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.
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```shell
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export PGPASSWORD=postgres # secret!
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docker run -p 3000:3000 \
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-e PGPASSWORD \
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-e DATABASE_URL=postgresql://user@host:port/db \
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-v /path/to/config/dir:/config \
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ghcr.io/maplibre/martin --config /config/config.yaml
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```
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## API
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_See [API documentation](https://maplibre.org/martin/using.html) in the Martin book._
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Martin data is available via the HTTP `GET` endpoints:
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| URL | Description |
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|----------------------------------------|-----------------------------------------------|
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| `/` | Status text, that will eventually show web UI |
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| `/catalog` | List of all sources |
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| `/{sourceID}` | Source TileJSON |
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| `/{sourceID}/{z}/{x}/{y}` | Map Tiles |
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| `/{source1},...,{sourceN}` | Composite Source TileJSON |
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| `/{source1},...,{sourceN}/{z}/{x}/{y}` | Composite Source Tiles |
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| `/sprite/{spriteID}[@2x].{json,png}` | Sprites (low and high DPI, index/png) |
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| `/health` | Martin server health check: returns 200 `OK` |
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## Documentation
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See [Martin book](https://maplibre.org/martin/) for complete documentation.
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