ohm-routing

GraphHopper plugin to route over OpenHistoricalMap data by date. It stores start_date/end_date of each way as ohm_start/ohm_end (decimal years, same conversion as the tiler), so a request can block the ways that did not exist on a given date. Issues #506 and #695.

Test page: https://routing.ohmstaging.org

• src/ the plugin: OhmDate (date conversion), OhmDateParser (encoded values), OhmImportRegistry (registers them in GraphHopper).
• test/ checks OhmDate against the tiler conversion.

The Docker image, profiles, update scripts and Kubernetes manifests live in ohm-deploy: images/routing and ohm/templates/routing. The image builds the plugin from this repo at a pinned commit.

Build and test

v=11.1
curl -fsSLO https://repo1.maven.org/maven2/com/graphhopper/graphhopper-core/$v/graphhopper-core-$v.jar
curl -fsSLO https://repo1.maven.org/maven2/com/graphhopper/graphhopper-web-api/$v/graphhopper-web-api-$v.jar
javac -d out -cp graphhopper-core-$v.jar:graphhopper-web-api-$v.jar src/org/openhistoricalmap/routing/*.java
javac -d out -cp out test/OhmDateTest.java && java -cp out OhmDateTest

Request

curl https://routing.ohmstaging.org/route -H 'Content-Type: application/json' -d '{
  "points": [[2.3222, 48.8366], [2.3822, 48.8766]],
  "profile": "car",
  "custom_model": {"priority": [{"if": "ohm_start > 1900.5 || ohm_end < 1900.5", "multiply_by": "0"}]}
}'