OpenFeature

Showing how to use OpenFeature in Golang API

Reference docs:

• https://openfeature.dev/docs/reference/intro
• https://openfeature.dev/docs/tutorials/getting-started/go

Prerequisites

• Some where to run containers (Docker, docker desktop https://docs.docker.com/get-docker, Podman https://podman.io, etc)
• Golang 1.2x (https://go.dev/)

Optional requisites:

• Visual Studio Code (for debugging)

Run the demo

1. open a terminal and go to this repo root
2. docker compose up (Ctrl+c to abort)
3. open a browser and go to http://localhost:7357/hello
4. open file flagd/flags.flagd.json
   • change flags.welcome-message.defaultVariant to "on"
5. refresh site on http://localhost:7357/hello
   • the text should be different 😊

Run with VSCode debugger

1. open a terminal and go to this repo root
2. code .
   • VS Code should start 😎
3. in the previous terminal or a new terminal in VS Code, run go get ./...
4. new terminal, run docker compose up flagd (Ctrl+x to abort)
5. in VS Code, go to the "Run and Debug" section (windows press Ctrl+Shift+d), and press ▶️ the play button (or F5)
6. View the "Debug Console" to see output

To test in a cluster

• https://openfeature.dev/docs/tutorials/ofo/
• https://killercoda.com/open-feature/scenario/openfeature-operator-demo
• https://artifacthub.io/packages/helm/open-feature-operator/open-feature-operator