diff-detector

A Leiningen plugin to detect changes in critical namespaces between Git commits.

Perfect for regulated industries (healthcare, finance) where you need to monitor changes in security-critical code paths.

Installation

Add to your project.clj:

:plugins [[diff-detector "0.1.0"]]

Configuration

Add configuration to your project.clj:

:diff-detector {:namespaces ["my-app.security.*"
                             "my-app.payment.core"
                             "my-app.compliance.*"]}

Usage

Basic usage

lein diff-detector

With detailed summary

lein diff-detector --summary

Compare specific commits/branches

lein diff-detector --base main --target feature-branch

Show help

lein diff-detector --help

Environment Variables

• DIFF_DETECTOR_BASE - Default base commit (fallback: origin/main)
• DIFF_DETECTOR_TARGET - Default target commit (fallback: HEAD)

Exit Codes

• 0 - No critical namespace changes detected
• 1 - Critical namespace changes detected (useful for CI/CD)

Use Cases

• CI/CD Integration: Fail builds when critical code changes
• Code Review: Automatically flag security-sensitive changes
• Compliance: Track changes in regulated code paths
• Risk Management: Monitor high-impact code modifications

Example Output

⚠️  Critical namespace changes detected!

Changed files in critical namespaces:
  - src/security/auth/core.clj
  - src/payment/gateway/stripe.clj

Summary:
  Total critical files changed: 2

License

Copyright © 2024

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.