add comment

.github/actions/testcomment/comment.txt

@@ -0,0 +1,15 @@
+
+        :x: **Pom.xml files are not well formatted !** [(more details)](###_URL_###})
+
+        Ensure your code build locally using: 
+        ```
+        mvn clean install
+        ```
+        Or just validate pom formatting with : 
+        ```
+        mvn com.github.ekryd.sortpom:sortpom-maven-plugin:verify -PallPom
+        ```
+        You can format pom.xml file with : 
+        ```
+        mvn com.github.ekryd.sortpom:sortpom-maven-plugin:sort -PallPom
+        ```

.github/actions/utils/addcomment/action.yml

@@ -0,0 +1,38 @@
+name: "Add Comment"
+description: "Download comment content file, substitute some value, then add the comment on a PR"
+
+inputs:
+  pullrequest_id:  
+    description: 'Id of the pull request to which we want to add comment'
+    required: true
+  action_name:  
+    description: 'The name of the "action" for which we want to create a comment'
+    required: true
+  job_url:  
+    description: 'url of the concerned job'
+    required: true
+
+
+runs:
+  using: "composite"
+  steps:
+
+  - name: Download Comment Template
+    uses: Bhacaz/checkout-files@v2
+    with:
+      files: .github/actions/${{inputs.action_name}}/comment.txt
+
+  - name: Substitute Value in Template
+    uses: bluwy/substitute-string-action@v1
+    id: sub
+    with:
+      _input-file: .github/actions/${{inputs.action_name}}/comment.txt
+      _format-key: '###_key_###'
+      URL: ${{inputs.job_url}}
+
+  - name: Add comment
+    uses: marocchino/sticky-pull-request-comment@adca94abcaf73c10466a71cc83ae561fd66d1a56
+    with:
+      number: ${{inputs.pullrequest_id}}
+      header: ${{inputs.action_name}}
+      message: ${{steps.sub.outputs.result}}

.github/workflows/commentPR.yml

@@ -0,0 +1,73 @@
+name: Comment PR
+
+on:
+  workflow_run:
+    workflows: ["Check PR"]
+    types:
+      - completed
+
+env:
+   build_status_filename: "build_status"
+   pr_id_key: "pullrequestid"
+
+jobs:
+  add_comment:
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.event == 'pull_request'
+    strategy:
+      matrix:
+        jobstep: [testcomment]
+
+    steps:
+      # Waiting https://github.com/actions/download-artifact/issues/172
+      # We are using github script
+      # Inspired by : https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
+      - name: Download Build Status File
+        uses: actions/[email protected]
+        with:
+          script: |
+            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               run_id: ${{github.event.workflow_run.id }},
+            });
+            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
+              return artifact.name == '${{env.build_status_filename}}'
+            })[0];
+            var download = await github.rest.actions.downloadArtifact({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifact.id,
+               archive_format: 'zip',
+            });
+            var fs = require('fs');
+            fs.writeFileSync('${{github.workspace}}/${{env.build_status_filename}}', Buffer.from(download.data));
+
+      - name: Read Status Build Status Properties File
+        id: read_property
+        uses: christian-draeger/[email protected]
+        with:
+          path: ${{env.build_status_filename}}
+          properties: ${{env.pr_id_key}} ${{ matrix.jobstep }}
+
+      - name: Download Add Comment Action
+        if: ${{ steps.read_property.outputs[matrix.jobstep] }} == 'success'
+        uses: Bhacaz/checkout-files@v2
+        with:
+          files: .github/actions/utils/addcomment/action.yml
+
+      - name: Add Comment
+        if: ${{ steps.read_property.outputs[matrix.jobstep] }} == 'success'
+        uses: ./.github/actions/utils/addcomment
+        with:
+          pullrequest_id: ${{ steps.read_property.outputs[env.pr_id_key]}}
+          action_name: ${{ matrix.jobstep }}
+          job_url: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+
+      - name: Delete Comment on Success
+        if: ${{ steps.read_property.outputs[matrix.jobstep]}} == 'failure'
+        uses: marocchino/sticky-pull-request-comment@adca94abcaf73c10466a71cc83ae561fd66d1a56
+        with:
+          number: ${{ steps.read_property.outputs.pullrequestid }}
+          header: ${{matrix.jobstep}}
+          delete: true