Node.js - TileCache

Implementation of the TMS specification using the Mapnik rendering API.

Dependencies

• Mapnik
• Node-Mapnik
• forever

Example

Download the data from the Natural Earth Data site and create a style definition

<Map background-color="steelblue" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">

  <Style name="countries">
    <Rule>
      <PolygonSymbolizer fill="#f2eff9" />
      <LineSymbolizer stroke="rgb(50%,50%,50%)" stroke-width="0.1" />
    </Rule>
  </Style>

  <Layer name="world" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
    <StyleName>countries</StyleName>
    <Datasource>
      <Parameter name="type">shape</Parameter>
      <Parameter name="file">ne_110m_admin_0_countries.shp</Parameter>
    </Datasource>
  </Layer>

</Map>

Start the TMS & seeding service typing:

node lib/tilecache.js example/tilecache.json

The implementation provides different RESTful webservices:

GET     http://[HOST]/services                  List the available TMS services
GET     http://[HOST]/services/seed/        	List of all cache definitions
GET     http://[HOST]/services/seed/task/       List of current seeding tasks
POST    http://[HOST]/services/seed/task/       Add a new seeding task
DELETE  http://[HOST]/services/seed/task/[ID]   Remove a seeding task by id

You can add a new seeding task using the curl and providing a JSON request; The parameters service, cache & global are mandatory. Optional parameters are format, from, to, bbox, reseed:

curl -i -X POST http://localhost:8888/services/seed/task/ --data '{"service":"countries", "cache" : "default", "grid": "global"}'