One of the optional components listed under “Architecture and Components” in the Preparation section of the Installation Guide is Geoconnect, a piece of middleware that allows Dataverse users to create maps in WorldMap based on geospatial data stored in Dataverse. For more details on the feature from the user perspective, see the WorldMap: Geospatial Data Exploration section of the User Guide.
SQL commands to point a Dataverse installation at different Geoconnect servers:
Geoconnect Production geoconnect.datascience.iq.harvard.edu
update worldmapauth_tokentype set mapitlink = 'https://geoconnect.datascience.iq.harvard.edu/shapefile/map-it', hostname='geoconnect.datascience.iq.harvard.edu' where name = 'GEOCONNECT';
Heroku Test geoconnect-dev.herokuapp.com
update worldmapauth_tokentype set mapitlink = 'https://geoconnect-dev.herokuapp.com/shapefile/map-it', hostname='geoconnect-dev.herokuapp.com' where name = 'GEOCONNECT';
View Current Settings
SELECT * from worldmapauth_tokentype;
After a map has been created in WorldMap (assuming all the setup has been done), in Dataverse the file will display WorldMap as an explore option. In rare occasions, the map has been deleted on the WorldMap resulting in a dead link, a 404 page not found error.
Functionality has been added on the Dataverse side to iterate through all the maps Dataverse knows about (stored in the maplayermetadata database table) and to check for the existence of each map in WorldMap. The status code returned from WorldMap (200, 404, etc.) is recorded in Dataverse along with a timestamp of when the check was performed. To perform this check, you can execute the following curl command:
curl -X POST http://localhost:8080/api/admin/geoconnect/mapLayerMetadatas/check
The output above will contain the layerLink being checked as well as the HTTP response status code (200, 404, etc.) in the lastVerifiedStatus field. 200 means OK and 404 means not found. 500 might indicate that the map is only temporarily unavailable. The lastVerifiedStatus and lastVerifiedTime will be persisted to the maplayermetadata database table.
Armed with this information about WorldMap returning a 404 for a map, you may want to delete any record of the map on the Dataverse side removing WorldMap as an explore option (and so that thumbnail files are cleaned up). To accomplish this, use the following curl command, substituting the id of the file:
curl -H "X-Dataverse-key: $API_TOKEN" -X DELETE http://localhost:8080/api/files/{file_id}/map
End users can also run the DELETE command above (if they have permission to edit the dataset) but it’s more likely that the sysadmin reading this guide will run it for them. It is recommended that you add the “check” command above to cron so that Dataverse periodically checks on the status of maps in WorldMap. In addition to the “check all maps” command above, you can also check an individual map with the following curl command, substituting the id of the row from the maplayermetadata table:
curl -X POST http://localhost:8080/api/admin/geoconnect/mapLayerMetadatas/check/{id}