comment.yml

name: Comment on clippy

on:
  workflow_run:
    workflows: ["Rust"]
    types:
      - completed

jobs:
  download:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        # We lock our failing tests on a known good version and
        # informationally check the latest as well.  We should
        # regularly update the known good once we know that tests
        # pass on it
        # This needs to stay in sync with rust.yml minus the known
        # good clippy version
        rust-toolchain: [ stable, nightly ]
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    steps:
      - name: 'Download clippy artifact'
        uses: actions/github-script@v6
        with:
          script: |
            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{github.event.workflow_run.id }},
            });
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "clippy-${{ matrix.rust-toolchain }}"
            })[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('${{github.workspace}}/clippy-${{ matrix.rust-toolchain }}.zip', Buffer.from(download.data));
      - name: 'Download test-nightly artifact'
        uses: actions/github-script@v6
        if: (matrix.rust-toolchain == 'nightly')
        with:
          script: |
            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: ${{github.event.workflow_run.id }},
            });
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "test-${{ matrix.rust-toolchain }}"
            })[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('${{github.workspace}}/test-${{ matrix.rust-toolchain }}.zip', Buffer.from(download.data));
      - run: unzip clippy-${{ matrix.rust-toolchain }}.zip
      - if: (matrix.rust-toolchain == 'nightly')
        run: unzip test-${{ matrix.rust-toolchain }}.zip
      - name: Notify clippy failure
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            var fs = require('fs');
            var clippy_ret = Number(fs.readFileSync('./flag'));
            var issue_number = Number(fs.readFileSync('./issue_num'));
            if (clippy_ret != 0) {
              github.rest.issues.createComment({
                issue_number: issue_number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: 'Stable clippy has failed for this run: ${{ matrix.rust-toolchain }}. A maintainer should check the logs. If known good clippy passed, this is non-fatal to the PR.'
              })
            }
      - name: Notify nightly test failure
        uses: actions/github-script@v6
        if: (matrix.rust-toolchain == 'nightly')
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            var fs = require('fs');
            var nightly_ret = Number(fs.readFileSync('./nightly_flag'));
            var issue_number = Number(fs.readFileSync('./issue_num'));
            if (nightly_ret != 0) {
              github.rest.issues.createComment({
                issue_number: issue_number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: 'Nightly test has failed for this run. A maintainer should check the logs. If known good clippy passed, this is non-fatal to the PR.'
              })
            }