[GitHub] [solr-operator] dalbani commented on issue #364: JTS and Polygons jar file

[GitBox <gi...@apache.org>]

dalbani commented on issue #364:
URL: https://github.com/apache/solr-operator/issues/364#issuecomment-969062840


   For those who might be interested in an alternative to @fernaspiazu's trick, here's how I did it:
   ```
   lifecycleHooks:
     postStart:
       exec:
         command:
           - /bin/sh
           - -ceux
           - >
             jts_version=1.18.2 &&
             dir=/opt/bitnami/solr/server/solr-webapp/webapp/WEB-INF/lib &&
             test -f ${dir}/jts-core-${jts_version}.jar ||
             curl -o ${dir}/jts-core-${jts_version}.jar https://repo1.maven.org/maven2/org/locationtech/jts/jts-core/${jts_version}/jts-core-${jts_version}.jar
   ```
   
   Although it works fine for me in practice, this solution probably relies on the `postStart` being called _before_ the app starts up.
   And no such guarantee in terms of timing exists as far as I can read on <https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/>.
   > This hook is executed immediately after a container is created. However, there is no guarantee that the hook will execute before the container ENTRYPOINT.
   
   So your mileage may vary.


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