control history tagging per project

[vladak]

This change introduces the tagsEnabled per project/repository tunable that allows to control whether tags should be applied to history entries (so that they are visible in history view).

This will require a change to https://github.com/oracle/opengrok/wiki/Per-project-configuration

Tested with the indexer running with:

-s
/var/opengrok/src
-d
/var/opengrok/data
-P
-H
-S
-c
/opt/homebrew/bin/ctags
-R
/var/opengrok/etc/ro-config-project.xml
-W
/var/opengrok/etc/configuration.xml

and the /var/opengrok/etc/ro-config-project.xml overriding the tagsEnabled:

<?xml version="1.0" encoding="UTF-8"?>
<java version="1.8.0_121" class="java.beans.XMLDecoder">
 <object class="org.opengrok.indexer.configuration.Configuration">

  <void property="projects">
   <void method="put">
    <string>Lucene</string>
    <object class="org.opengrok.indexer.configuration.Project">
     <void property="handleRenamedFiles">
      <boolean>true</boolean>
     </void>
     <void property="historyEnabled">
      <boolean>true</boolean>
     </void>
     <void property="tagsEnabled">
      <boolean>true</boolean>
     </void>
     <void property="mergeCommitsEnabled">
      <boolean>true</boolean>
     </void>
     <void property="name">
      <string>Lucene</string>
     </void>
     <void property="path">
      <string>/Lucene</string>
     </void>
    </object>
   </void>
  </void>

 </object>
</java>

Then after the indexing is done, check that the history view contains list of tags.

The indexer log entry relevant to the repository:

INFO: Creating history cache for {dir='/private/var/opengrok/src/Lucene',type=git,history=on,historyCache=on,renamed=true,merge=true,annotationCache=off,tagsEnabled=on}
Jun 04, 2025 3:00:10 PM org.opengrok.indexer.history.HistoryGuru createHistoryCache