Transdeal

This library is supposed to simplify rolling back transactions, preserving some data still stored.

Installation

Add this line to your application's Gemfile:

gem 'transdeal'

And then execute:

$ bundle

Or install it yourself as:

$ gem install transdeal

Usage

Somewhere in application intializers:

Transdeal.configure do |data|
  puts data.inspect
  TemporaryStorage.store(data)
end

and inside the application code:

Transdeal.transaction(users.main) do |data|
  users.main = :me
  customers.destroy_all!
  raise ActiveRecord::Rollback
end

The above will call a configured backend(s) with the last version of modified objects before the transaction is rolled back.

Explicit handlers

class CallbackHandler
  def self.run(data)
    puts data.inspect
  end
end

Transdeal.transaction(users.main, callback: :callback_handler) do
  users.main = :me
  raise ActiveRecord::Rollback
end

There are two keyword parameters currently accepted:

• callback — anything that can be converted to proc, or symbol for the class name, or a string, or a class (the class must respond to one of [:store, :run, :perform_async, :perform, :call, :[]]—tried in descending order,) or hash {receiver: ..., method: ...}
• skip_global_callbacks — the callbacks configured through global Transdeal.configure method will be skipped.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/am-kantox/transdeal. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Transdeal project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.