hydra-file_chracterization

Hydra::FileCharacterization as (extracted from Sufia and Hydra::Derivatives)

Purpose

To provide a wrapper for file characterization

To Consider

How others are using the extract_metadata method

• https://github.com/curationexperts/bawstun/blob/ff8142ac043604c11a6f57b03629284bfd3043ea/app/models/generic_file.rb#L173

Todo Steps

• ~~Given a filename, characterize the file and return a raw XML stream~~
• Provide method for converting a StringIO and original file name to a temp file with comparable, then running the characterizer against the tempfile
• Provide a configuration option for the fits path; This would be the default for the characterizer
• Update existing Sufia implementation
  • Deprecrate Hydra::Derivatives direct method call
  • Instead call the characterizer with the content
• Allow characterization services to be chained together
  • This would involve renaming the Characterizer to something else (i.e. Characterizers::Fits)
• Provide an ActiveFedora Datastream that maps the raw XML stream to a datastructure