RedactedStruct

A version of Ruby's built-in Struct that redacts members when printing, and can allow specifying members that can be printed normally (an allowlist).

Config = RedactedStruct.new(
  :username,
  :password,
  :timeout,
  :url,
  keyword_init: true,
  allowed_members: [:username, :timeout]
)

config = Config.new(username: 'example', password: 'secret', timeout: 5, url: 'https://example.com')
=> #<struct Config username="example" password=[REDACTED] timeout=5>

Pretty-Printing

The struct will automatically redact itself when pretty-printed via #pp:

require 'pp'

pp config
#<struct Config
 username="example",
 password=[REDACTED],
 timeout=5,
 url="https://example.com">

RedactedData

Redaction is also supported for Ruby's built-in Data class:

Config = RedactedData.define(
  :username,
  :password,
  :timeout,
  :url,
  allowed_members: [:username, :timeout]
)

config = Config.new(username: 'example', password: 'secret', timeout: 5, url: 'https://example.com')
=> #<data Config username="example" password=[REDACTED] timeout=5>

Installation

Add this line to your application's Gemfile:

gem 'redacted_struct'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install redacted_struct

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. 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 the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/zachmargolis/redacted_struct.