action.yml

name: DiffKeeper Flight Recorder
description: Record filesystem changes during CI steps for debugging flaky tests
inputs:
  command:
    description: The command to run and record
    required: true
  state-dir:
    description: Directory to store the trace
    default: diffkeeper-trace
runs:
  using: composite
  steps:
    - name: Install DiffKeeper
      shell: bash
      run: |
        curl -sfL https://github.com/saworbit/diffkeeper/releases/latest/download/install.sh | sh
        sudo cp ./bin/diffkeeper /usr/local/bin/

    - name: Record
      shell: bash
      run: |
        # Run with sudo to allow eBPF attachment
        sudo diffkeeper record --state-dir="${{ inputs.state-dir }}" -- ${{ inputs.command }}

    - name: Upload Trace (On Failure)
      if: failure()
      uses: actions/upload-artifact@v4
      with:
        name: diffkeeper-trace
        path: ${{ inputs.state-dir }}