NOvA metadata package:
https://cdcvs.fnal.gov/redmine/projects/novaart/repository/show/trunk/Metadata
Metadata_module.cc --> an analyzer module designed to insert metadata into the output file
MetadataManager.* --> a manager class which parses input metadata stored in the fcl file, extracts metadata from input files, and generates dynamic metadata based on processing (event counts, etc). This then organizes the metadata for insertion into the file.
NOvA Grid Utilities:
https://cdcvs.fnal.gov/redmine/projects/novaart/repository/show/trunk/NovaGridUtils
NOvA Production Utilities:
https://cdcvs.fnal.gov/redmine/projects/novaart/repository/show/trunk/novaproduction