notes_finder.rb 907 Bytes
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class NotesFinder
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  FETCH_OVERLAP = 5.seconds

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  def execute(project, current_user, params)
    target_type = params[:target_type]
    target_id   = params[:target_id]
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    # Default to 0 to remain compatible with old clients
    last_fetched_at = Time.at(params.fetch(:last_fetched_at, 0).to_i)
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    notes =
      case target_type
      when "commit"
        project.notes.for_commit_id(target_id).not_inline.fresh
      when "issue"
        project.issues.find(target_id).notes.inc_author.fresh
      when "merge_request"
        project.merge_requests.find(target_id).mr_and_commit_notes.inc_author.fresh
      when "snippet", "project_snippet"
        project.snippets.find(target_id).notes.fresh
      else
        raise 'invalid target_type'
      end
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    # Use overlapping intervals to avoid worrying about race conditions
    notes.where('updated_at > ?', last_fetched_at - FETCH_OVERLAP)
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  end
end