LaunchDarkly Sample OpenFeature Ruby Server Application

We've built a simple console script that demonstrates how LaunchDarkly's OpenFeature provider works.

Build instructions

This example requires Ruby 3.4 or later, as required by the launchdarkly-openfeature-server-sdk and openfeature-sdk gems.

Set the environment variable LAUNCHDARKLY_SDK_KEY to your LaunchDarkly SDK key. If there is an existing boolean feature flag in your LaunchDarkly project that you want to evaluate, set LAUNCHDARKLY_FLAG_KEY to the flag key; otherwise, a boolean flag of sample-feature will be assumed.
```
export LAUNCHDARKLY_SDK_KEY="1234567890abcdef"
export LAUNCHDARKLY_FLAG_KEY="my-boolean-flag"
```
If you have not installed the bundler tool, run gem install bundler on the command line.
On the command line, run bundle install
Run bundle exec ruby main.rb

You should see the message "The <flag key> feature flag evaluates to <true/false>".