Discrepancy Service

Model-Agnostic Ruby Serivce that detect discrepancies between local and remote data and return a description of those discrepancies.

How to Run it

bundle install
# Change database configurations in db/config.yml
bundle exec rake db:create
bundle exec rake db:migrate
bundle exec rspec # to make sure that tests passes

Service Arguments

• external_server: External Data server endpoint to hit.
• model: Local ActiveRecord Model (You can pass a reference to any model in your application or any class that supports where operation)
• keys_to_ignore: Keys in the external data records to ignore when comparing.
• json_data_key: Key of the JSON Object containg the external data json array.
• key_mapping: a map of { remote_key: local_key } for fields with different remote and local names e.g. { description: :ad_description }

Note: The Service assumes that there's a reference field in external data records and a corresponding external_reference column in local data to link between the two records.

Note: I've made the assumption that status possible values should have the same naming if they have the same meaning e.g 'active' is not the same as 'enabled'