From 83e8a49708f65c4a1839afe16573f77bf571d157 Mon Sep 17 00:00:00 2001
From: Gabriel Becker <ggasparb@redhat.com>
Date: Mon, 25 Oct 2021 12:38:12 +0200
Subject: [PATCH] Add github workflow action to output the diff of datastreams.

---
 .github/workflows/compare-ds.yaml | 92 +++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 .github/workflows/compare-ds.yaml

diff --git a/.github/workflows/compare-ds.yaml b/.github/workflows/compare-ds.yaml
new file mode 100644
index 000000000000..71d6fea1c617
--- /dev/null
+++ b/.github/workflows/compare-ds.yaml
@@ -0,0 +1,92 @@
+name: Compare DS
+on:
+  pull_request_target:
+    branches: [ master ]
+jobs:
+  build-content:
+    name: Generate Diff
+    runs-on: ubuntu-latest
+    container:
+      image: fedora:latest
+    steps:
+      - name: Install Deps
+        run: dnf install -y cmake make openscap-utils python3-pyyaml python3-jinja2 git python3-deepdiff python3-requests jq python3-pip
+      - name: Install deps python
+        run: pip install gitpython xmldiff
+      - name: Checkout master
+        uses: actions/checkout@v2
+        with:
+          ref: master
+      - name: Checkout (CTF)
+        uses: actions/checkout@v2
+        with:
+          repository: mildas/content-test-filtering
+          path: ctf
+      - name: Detect content changes in the PR
+        run: python3 ./ctf/content_test_filtering.py pr --rule --output json ${{ github.event.pull_request.number }} > output.json
+      - name: Test if there are no content changes
+        run: echo "::set-output name=CTF_OUTPUT_SIZE::$(stat --printf="%s" output.json)"
+        id: ctf
+      - name: Print changes to content detected if any
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        run: cat output.json
+      - name: Get product attribute
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        id: product
+        uses: notiz-dev/github-action-json-property@release
+        with:
+          path: 'output.json'
+          prop_path: 'product'
+      - name: Build product (master)
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        run: ./build_product ${{steps.product.outputs.prop}} --datastream-only
+      - name: Copy built datastream stream to be compared
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        run: cp build/ssg-${{steps.product.outputs.prop}}-ds.xml ssg-${{steps.product.outputs.prop}}-ds.xml
+      - name: Checkout
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        uses: actions/checkout@v2
+        with:
+          clean: false
+      - name: Build product
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        run: ./build_product ${{steps.product.outputs.prop}} --datastream-only
+      - name: Compare datastreams
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        run: utils/compare_ds.py ssg-${{steps.product.outputs.prop}}-ds.xml build/ssg-${{steps.product.outputs.prop}}-ds.xml | tee diff.log
+        env:
+          PYTHONPATH: ${{ github.workspace }}
+      - name: Get diff.log
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        id: diff
+        run: |
+          body=$(cat diff.log)
+          body="${body//'%'/'%25'}"
+          body="${body//$'\n'/'%0A'}"
+          body="${body//$'\r'/'%0D'}"
+          echo ::set-output name=log::$body
+      - name: Find Comment
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        uses: peter-evans/find-comment@v1
+        id: fc
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: Datastream diff output
+      - name: Create or update comment
+        if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          comment-id: ${{ steps.fc.outputs.comment-id }}
+          issue-number: ${{ github.event.pull_request.number }}
+          body: |
+            This datastream diff is auto generated by the check `Compare DS/Generate Diff`
+            <details>
+            <summary>Click here to see the full diff</summary>
+
+            ```diff
+            ${{ steps.diff.outputs.log }}
+            ```
+
+            </details>
+          edit-mode: replace