This is a first pass at exporting GenericFiles and Collections stored under a Sufia 6 implementation to a set of JSON files that can be used to import the data into a Sufia 7 implementation.
Add this line to your application's Gemfile:
gem 'sufia_migrate'And then execute:
$ bundle
Or install it yourself as:
$ gem install sufia_migrate
To use the import or export rake tasks in your Sufia projects add the import or export rake file to your Rakefile:
spec = Gem::Specification.find_by_name 'sufia_migrate'
load "#{spec.gem_dir}/lib/tasks/export.rake"
load "#{spec.gem_dir}/lib/tasks/import.rake"
To export Generic Files the idea is to run two rake tasks. One to export the IDs of all the files to export and another to actually export them to JSON files (one per Generic File). I suspect we could combine these tasks but for a final release.
rake gf_ids > gf_ids.txt
rake export_gf[gf_ids.txt]
Similar rake tasks can be used to export Collections.
You can see a sample of the JSON files generated when exporting a file and a collection here: https://gist.github.com/hectorcorrea/619c13fa540341be14cb01c762d9f2cc
The JSON file generated for Generic Files only includes the metadata (including metadata for versions and permissions) but not the actual binary. The idea is to fetch the binary (for the current and previous versions) directly from Fedora 4 at the time the data is imported to a Sufia 7 application.
To import Sufia 6 GenericFiles into Sufia 7 GenericWorks you must have some gf_*.json files in the current directory.
rake import
After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/ualbertalib/sufia_migrate.