Developing a GeoServer Extension for Clustering and Vector Tiles with Caching

GeoServer GeoServer Developer
,
1

Hello everyone,

I am a master’s student in Turkey working on my thesis related to GeoServer. I am developing a new extension, but I am stuck at a certain point. I noticed some GitHub commits from experienced contributors, so I thought I could ask for guidance here. Any help would be greatly appreciated.

I am trying to develop an extension that clusters point data based on the zoom level and serves it as vector tiles. My goal is to connect to a PostGIS database and send a custom SQL query based on the z, x, and y values coming from the browser. Additionally, I want to integrate GeoServer’s caching mechanism to cache the data based on these z, x, and y values.

I have implemented this using the GeoServer REST API, but I couldn’t make use of the caching mechanism. How can I develop this extension properly? Could you provide any guidance or point me in the right direction?

Thank you in advance for your help!

2

In general the REST api is used for administration of GeoServer rather than serving data. It sounds as though you need to create a new datasource or process. You will probably want to look at the GeoTools (the library GeoServer is built with) examples for CustomDataStores (https://docs.geotools.org/latest/userguide/tutorial/datastore/index.html) and Processes (https://docs.geotools.org/latest/userguide/tutorial/process.html). You might also want to check out the PointStacker process (https://github.com/geotools/geotools/blob/main/modules/unsupported/process-feature/src/main/java/org/geotools/process/vector/PointStackerProcess.java) which does something similar to what (I think) you are trying to do.

Ian

3

Hİ Ian ,
Thank you for your answer. You haven’t written a new datastore. Can’t I intervene and edit SQL with the existing vector tile extention without making a request to Postgis?