Hello everyone! Today, I'd like to introduce a CLI tool I developed that automatically detects unused Unleash flags. By using this tool, you can easily identify outdated feature flags in your project and help clean up your codebase.

Tool Overview

• Repository: stale-flag-detector
• Function: Automatically detects unused Unleash flags
• Installation: Clone the repository and generate the executable using the go build command

Basic Usage

After building the tool, you can display a list of stale flags by running it as follows:

% ./stale-flag-detector
Stale flags:
- unleash-ai-example-stale
- another-stale-flag

Options

This tool has two main options:

1. --exclude-potentially-stale-flags

   • Excludes potentially stale flags from the results
   • For more details on potentially stale flags, please refer to the Unleash documentation

2. --output-regex

   • Outputs the results in regex format

Example of Regex Output

% ./stale-flag-detector --output-regex
(unleash-ai-example-stale|another-stale-flag)

Practical Usage Example

The true value of this tool is realized when combined with other command-line tools. For example, by combining it with the pt command (The Platinum Searcher), you can easily identify where stale flags are being used in your project:

% pt -e `./stale-flag-detector --output-regex` ../sample-app-for-unleash-checker
../sample-app-for-unleash-checker/app/stale.py
9:if client.is_enabled("unleash-ai-example-stale"):

Using this method provides the following advantages:

• Accurately locate unused flags
• Simplify codebase cleanup
• Contribute to reducing technical debt

Summary

The stale-flag-detector is a powerful tool for streamlining the maintenance of projects using Unleash. It can help improve feature flag management and keep your codebase clean. Give it a try!

If you have any feedback or suggestions for improvement, please let us know through Issues or Pull Requests on the GitHub repository. We look forward to hearing your opinions!