[](https://badge.fury.io/rb/ruby-dagger) [](https://codeclimate.com/github/notCalle/ruby-dagger/maintainability) [](https://codecov.io/gh/notCalle/ruby-dagger) [](https://dev.azure.com/notCalle/GitHub%20CI/_build/latest?definitionId=2) # Dagger `Dagger` can manage a [directed acyclic graph](https://github.com/notcalle/tangle) of [key trees](https://github.com/notcalle/keytree), inspired by the ideas behind [PalletJack](https://github.com/saab-simc-admin/palletjack). The DAG is stored in a regular posix file system hierarchy, where _directories_ are vertices with a forest of key trees from the contained _files_. Edges are formed from the directory structure, and _symlinks_. Edge direction (default top->down & target->source) is selectable, but key tree inheritence is always top->down & target->source. ``` spec/fixture/graph ├── vertex1 │ ├── a.yaml # a.b = 2 │ └── c.yaml # c = 3 └── vertex2 ├── b.yaml # b = 2 └── parent -> ../vertex1 # a.b = 2, c = 3 ``` ## Installation Add this line to your application's Gemfile: ```ruby gem 'ruby-dagger' ``` And then execute: $ bundle Or install it yourself as: $ gem install ruby-dagger ## Usage $ bin/console ```ruby g=Dagger.load('spec/fixture/graph') => #<Dagger::Graph: 3 vertices, 3 edges> g['/vertex1']['a.b'] => 2 g['/vertex2']['a.b'] => 2 g['/vertex2'].local['a.b'] => nil ``` ## Development 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`. ## Contributing Bug reports and pull requests are welcome on GitHub at https://github.com/notCalle/ruby_dagger. Pull requests should be rebased to HEAD of `master` before submitting, and all commits must be signed with valid GPG key. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct. ## License The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT). ## Code of Conduct Everyone interacting in the RubyDagger project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/notCalle/ruby_dagger/blob/master/CODE_OF_CONDUCT.md).