ci(NODE-7025): New SBOM generation workflow on dependencies change

.github/actions/sbom-update/action.yml

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+name: Generate SBOM
+description: Generates CycloneDX SBOM using cdxgen
+inputs:
+  output-file:
+    description: "Output filename for the SBOM"
+    required: false
+    default: "sbom.json"
+outputs:
+  HAS_CHANGES:
+    description: "Whether the SBOM has meaningful changes compared to the existing version"
+    value: ${{ steps.check_changes.outputs.HAS_CHANGES }}
+runs:
+  using: composite
+  steps:
+    - name: Generate SBOM
+      id: generate-sbom
+      shell: bash
+      run: |
+        echo "Generating SBOM for 'node' project..."
+        npx @cyclonedx/cyclonedx-npm --package-lock-only --output-file sbom-new.json --output-format json --spec-version 1.5
+
+    - name: Validate SBOM presence
+      shell: bash
+      run: |
+        if [ ! -f "sbom-new.json" ]; then
+          echo "Error: SBOM file not found"
+          exit 1
+        fi
+        echo "SBOM file generated: sbom-new.json"
+
+    - name: Download CycloneDX CLI
+      shell: bash
+      run: |
+        curl -L -s -o /tmp/cyclonedx "https://github.com/CycloneDX/cyclonedx-cli/releases/download/v0.29.1/cyclonedx-linux-x64"
+        chmod +x /tmp/cyclonedx
+
+    - name: Validate SBOM
+      shell: bash
+      run: /tmp/cyclonedx validate --input-file sbom-new.json --fail-on-errors
+
+    - name: Check for SBOM changes
+      id: check_changes
+      if: steps.generate-sbom.outcome == 'success'
+      shell: bash
+      env:
+        SBOM_FILE: ${{ inputs.output-file }}
+      run: |
+        JQ_NORMALIZER='del(.serialNumber) | del(.metadata.timestamp) | walk(if type == "object" and .timestamp then .timestamp = "TIMESTAMP_NORMALIZED" else . end)'
+
+        if [ -f "$SBOM_FILE" ]; then
+          echo "Comparing new SBOM with existing $SBOM_FILE..."
+
+          # First try cyclonedx diff for component-level comparison
+          DIFF_OUTPUT=$(/tmp/cyclonedx diff "$SBOM_FILE" sbom-new.json --component-versions 2>/dev/null || true)
+
+          if echo "$DIFF_OUTPUT" | grep -q "^None$"; then
+            echo "No component changes detected via cyclonedx diff"
+
+            # Double-check with jq normalization (excludes metadata like timestamps)
+            if diff -q \
+               <(cat "$SBOM_FILE" | jq -r "$JQ_NORMALIZER") \
+               <(cat sbom-new.json | jq -r "$JQ_NORMALIZER") > /dev/null 2>&1; then
+              echo "HAS_CHANGES=false" >> $GITHUB_OUTPUT
+              echo "No meaningful changes detected in SBOM"
+              rm sbom-new.json
+            else
+              echo "HAS_CHANGES=true" >> $GITHUB_OUTPUT
+              echo "Changes detected in SBOM (non-component changes)"
+              mv sbom-new.json "$SBOM_FILE"
+            fi
+          else
+            echo "Component changes detected:"
+            echo "$DIFF_OUTPUT"
+            echo "HAS_CHANGES=true" >> $GITHUB_OUTPUT
+            mv sbom-new.json "$SBOM_FILE"
+          fi
+        else
+          echo "No existing $SBOM_FILE found, creating initial version"
+          echo "HAS_CHANGES=true" >> $GITHUB_OUTPUT
+          mv sbom-new.json "$SBOM_FILE"
+        fi
+      continue-on-error: true
+
+    - name: Final SBOM validation
+      shell: bash
+      run: |
+        if [ ! -f "${{ inputs.output-file }}" ]; then
+          echo "Error: Final SBOM file not found at ${{ inputs.output-file }}"
+          exit 1
+        fi
+        echo "SBOM file validated: ${{ inputs.output-file }}"

.github/actions/setup-sbom/action.yml

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+name: Setup PHP SBOM
+description: Sets up environment for generating SBOM in PHP projects
+inputs:
+  working-directory:
+    description: "The directory where composer.json is located"
+    required: false
+    default: "."
+
+runs:
+  using: composite
+  steps:
+    - name: Setup Node.js (for cdxgen)
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+
+    - name: Install dependencies
+      shell: bash
+      run: npm ci

.github/actions/setup/action.yml

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+name: Setup Node SBOM
+description: Sets up environment for generating SBOM in Node.js projects
+inputs:
+  working-directory:
+    description: "The directory where package.json is located"
+    required: false
+    default: "."
+
+runs:
+  using: composite
+  steps:
+    - name: Setup Node.js (for cdxgen)
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+
+    - name: Install cdxgen
+      shell: bash
+      run: npm install -g @cyclonedx/cdxgen

.github/workflows/sbom.yml

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+name: Post-Merge SBOM Update
+on:
+  push:
+    branches: 
+      - main
+    paths:
+      - 'package.json'
+      - 'package-lock.json'
+  workflow_dispatch:
+
+env:
+  SBOM_FILE: "sbom.json"
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  sbom:
+    name: Generate SBOM and Create PR
+    runs-on: ubuntu-latest
+
+    concurrency:
+      group: sbom-${{ github.ref }}
+      cancel-in-progress: false
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ github.ref }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install Node and dependencies
+        uses: mongodb-labs/drivers-github-tools/node/setup@v3
+        with:
+          ignore_install_scripts: false
+
+      - name: Load version and package info
+        uses: mongodb-labs/drivers-github-tools/node/get_version_info@v3
+        with:
+          npm_package_name: mongodb
+
+      - name: Generate/Update package-lock.json
+        run: |
+          echo "Resolving dependencies and generating package-lock.json..."
+          npm install --package-lock-only
+          echo "package-lock.json generated with resolved versions"
+
+      - name: Setup SBOM environment
+        uses: ./.github/actions/setup-sbom
+
+      - name: Generate SBOM
+        id: generate_sbom
+        uses: ./.github/actions/sbom-update
+        with:
+          output-file: ${{ env.SBOM_FILE }}
+
+      - name: Commit SBOM changes
+        if: steps.generate_sbom.outputs.HAS_CHANGES == 'true'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add ${{ env.SBOM_FILE }}
+          git commit -m "chore(deps): Update SBOM after dependency changes"
+          git push
+          echo "SBOM updated and committed" >> $GITHUB_STEP_SUMMARY
+        continue-on-error: true