Migration to backfill archived in wikis

What does this MR do and why?

Backfill the archived field in the wikis index. This is done only for the project wikis because groups can not be archived so there is no need to do the group wikis.

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Before	After

How to set up and validate locally

• Make sure Elasticsearch is enabled
• Open the Rails console

bundle exec rails c

• Prepare some wikis with missing archived field

  • Simulate the condition migration add_archived_to_wikis is not finished
    • Early return from the method migration_has_finished?. Replace the method here by the following code

      def migration_has_finished?(name)
        return false if name == :add_archived_to_wikis
        Rails.cache.fetch cache_key(:migration_has_finished, name.to_s.underscore), expires_in: CACHE_TIMEOUT do
          migration_has_finished_uncached?(name)
        end
      end

  • Now create some wikis.
  • Ensure that the archived field is missing in these newly created wikis. The following curl request should show count non zero

  curl -XGET "http://localhost:9200/gitlab-development-wikis/_count" -H "kbn-xsrf: reporting" -H "Content-Type: application/json" -d'
  {
    "query": {
      "bool": {
        "must_not": [
          {
            "exists": {
              "field": "archived"
            }
          }
        ],
        "must": {
          "exists": {
            "field": "project_id"
          }
        }
      }
    }
  }' | json_pp

• Run the migration in the rails console

  Elastic::DataMigrationService[20230728104748].send(:migration).migrate

• Now check again the wiki docs on the wikis index by using the above curl request. It should show count as zero

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Run time

~ 10 minutes

Related to #416248 (closed)

Related to Create a migration to backfill archived (#417743 - closed)