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javageoserver

Is there a way to permanently remove a tile "programmatically" (Java) from caching in GeoServer?

I'm working with GeoServer and a Java backend. I am able to reset a tile's cache using the Rest API and to prevent any further cahing by removing the tile permanently from GeoServer's GUI (Tile Caching -> Tile Layers -> Check the tile -> Click on "Remove selected cached layers").

I would like to automatize the process and do it from back-end side. I tried truncate operations, dug in the rest api as well as Java objects but haven't been able to figure how.

Is is possible to permanently remove a tile from caching using Java? If yes, how?

Thank you for your help.

Solution

  • If you are trying to avoid caching a layer at all (rather than truncating a layer's cache) then you need to visit its GWC REST endpoint:

    http://localhost:8080/geoserver/gwc/rest/layers/zoomstack:airports.xml

    which will give you a file like:

    <GeoServerLayer>
  <id>LayerInfoImpl-36bac688:1666e6c28d4:-7ffd</id>
  <enabled>true</enabled>
  <inMemoryCached>true</inMemoryCached>
  <name>zoomstack:airports</name>
  <mimeFormats>
    <string>image/png</string>
    <string>image/jpeg</string>
  </mimeFormats>
  <gridSubsets>
    <gridSubset>
      <gridSetName>osgb</gridSetName>
    </gridSubset>
    <gridSubset>
      <gridSetName>EPSG:900913</gridSetName>
    </gridSubset>
    <gridSubset>
      <gridSetName>EPSG:4326</gridSetName>
    </gridSubset>
  </gridSubsets>
  <metaWidthHeight>
    <int>4</int>
    <int>4</int>
  </metaWidthHeight>
  <expireCache>0</expireCache>
  <expireClients>0</expireClients>
  <parameterFilters>
    <styleParameterFilter>
      <key>STYLES</key>
      <defaultValue/>
    </styleParameterFilter>
  </parameterFilters>
  <gutter>0</gutter>
</GeoServerLayer>

    You can then change <enabled>true</enabled> to <enabled>false</enabled> and PUT it back to the server.