Emulating an Overpass API server with Geowiki API, serving an OSM file

Setup Geowiki API server

First, install geowiki-api:

npm install -g @geowiki-net/geowiki-api

Run as server:

mapnik-geowiki-server --db map.osm

Currently, Geowiki API supports .osm, .osm.json, .osm.bz2, .geojson and .umap files. If --db is omitted, the Overpass API server on overpass-api.de is used.

Requesting data via curl

curl -XPOST -d"[out:json][bbox:48.2,16.3,48.3,16.4];nwr[amenity=restaurant];out body geom;" http://localhost:8080

You should receive something like this:

{
  "version": 0.6,
  "generator": "JOSM via @geowiki-net/geowiki-api 4.0.0-beta.3",
  "osm3s": {},
  "elements": [
    {
      "type": "node",
      "id": 123456,
      "tags": {
        "amenity": "restaurant",
        "name": "Awesome restaurant"
      },
      "lat": 48.2004654,
      "lon": 16.3409641
    }
  ]
}

Using Geowiki API with Overpass Turbo

In the settings of Overpass Turbo, enter http://localhost:8080 as server:

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Now, you should be able to send requests as usual. Be aware, that not all functions of Overpass API are supported by Geowiki API.

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Conclusion

It's easy to serve own OSM data (or data of own sources) using Geowiki API.

Be aware of the limitations: As Geowiki loads the whole file into memory, only small files are, e.g. a medium sized town. Also, not all functions of Overpass API are supported.