perform_checks

in ee/lib/gitlab/geo/health_check.rb [7:26]

• 17 lines of code
• 13 McCabe index (conditional complexity)

      def perform_checks
        return '' unless Gitlab::Geo.secondary?
        return 'Geo database configuration file is missing.' unless Gitlab::Geo.geo_database_configured?
        return 'An existing tracking database cannot be reused.' if reusing_existing_tracking_database?
        return 'Geo node has a database that is writable which is an indication it is not configured for replication with the primary node.' unless Gitlab::Database.db_read_only?
        return 'Geo node does not appear to be replicating the database from the primary node.' if replication_enabled? && !replication_working?
        return "Geo database version (#{database_version}) does not match latest migration (#{migration_version}).\nYou may have to run `gitlab-rake geo:db:migrate` as root on the secondary." unless database_migration_version_match?
        return 'Geo database is not configured to use Foreign Data Wrapper.' unless Gitlab::Geo::Fdw.enabled?

        unless Gitlab::Geo::Fdw.foreign_tables_up_to_date?
          output = "Geo database has an outdated FDW remote schema."
          output = "#{output} It contains #{foreign_schema_tables_count} of #{gitlab_schema_tables_count} expected tables." unless schema_tables_match?
          return output
        end

        ''
      rescue => e
        e.message
      end