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ximus / ruby-client

LaunchDarkly SDK for Ruby

Home Page:http://www.launchdarkly.com

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LaunchDarkly SDK for Ruby

Gem Version

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Quick setup

  1. Install the Ruby SDK with gem
gem install ldclient-rb
  1. Require the LaunchDarkly client:
require 'ldclient-rb'
  1. Create a new LDClient with your SDK key:
client = LaunchDarkly::LDClient.new("your_sdk_key")

Ruby on Rails

  1. Add gem 'ldclient-rb' to your Gemfile and bundle install

  2. Initialize the launchdarkly client in config/initializers/launchdarkly.rb:

Rails.configuration.ld_client = LaunchDarkly::LDClient.new("your_sdk_key")
  1. You may want to include a function in your ApplicationController
    def launchdarkly_settings
      if current_user.present?
        {
          key: current_user.id,
          anonymous: false,
          email: current_user.email,
          custom: { groups: current_user.groups.pluck(:name) },
          # Any other fields you may have
          # e.g. lastName: current_user.last_name,
        }
      else
        if Rails::VERSION::MAJOR <= 3
          hash_key = request.session_options[:id]
        else
          hash_key = session.id
        end
        # session ids should be private to prevent session hijacking
        hash_key = Digest::SHA256.base64digest hash_key
        {
          key: hash_key,
          anonymous: true,
        }
      end
    end
  1. In your controllers, access the client using
Rails.application.config.ld_client.variation('your.flag.key', launchdarkly_settings, false)

Note that this gem will automatically switch to using the Rails logger it is detected.

Your first feature flag

  1. Create a new feature flag on your dashboard
  2. In your application code, use the feature's key to check whether the flag is on for each user:
if client.variation("your.flag.key", {key: "user@test.com"}, false)
  # application code to show the feature
else
  # the code to run if the feature is off
end

Learn more

Check out our documentation for in-depth instructions on configuring and using LaunchDarkly. You can also head straight to the complete reference guide for this SDK.

Testing

We run integration tests for all our SDKs using a centralized test harness. This approach gives us the ability to test for consistency across SDKs, as well as test networking behavior in a long-running application. These tests cover each method in the SDK, and verify that event sending, flag evaluation, stream reconnection, and other aspects of the SDK all behave correctly.

Contributing

See Contributing

About LaunchDarkly

About

LaunchDarkly SDK for Ruby

http://www.launchdarkly.com

License:Other

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Language:Ruby 100.0%