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Pull #92: Add workflows to run recipes on PRs
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‎.github/workflows/comment-pr.yml‎

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# Description: This workflow is triggered when the `receive-pr` workflow completes to post suggestions on the PR.
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# Since this pull request has write permissions on the target repo, we should **NOT** execute any untrusted code.
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# https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
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---
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name: comment-pr
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on:
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workflow_run:
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workflows: ["receive-pr"]
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types:
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- completed
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jobs:
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post-suggestions:
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# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#running-a-workflow-based-on-the-conclusion-of-another-workflow
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if: ${{ github.event.workflow_run.conclusion == 'success' }}
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runs-on: ubuntu-latest
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permissions:
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pull-requests: write
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env:
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# https://docs.github.com/en/actions/reference/authentication-in-a-workflow#permissions-for-the-github_token
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ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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timeout-minutes: 10
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steps:
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- uses: actions/checkout@v4
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with:
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ref: ${{github.event.workflow_run.head_branch}}
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repository: ${{github.event.workflow_run.head_repository.full_name}}
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# Download the patch
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- uses: actions/download-artifact@v4
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with:
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name: patch
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github-token: ${{ secrets.GITHUB_TOKEN }}
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run-id: ${{ github.event.workflow_run.id }}
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- name: Apply patch
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run: |
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git apply git-diff.patch --allow-empty
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rm git-diff.patch
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# Download the PR number
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- uses: actions/download-artifact@v4
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with:
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name: pr_number
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github-token: ${{ secrets.GITHUB_TOKEN }}
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run-id: ${{ github.event.workflow_run.id }}
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- name: Read pr_number.txt
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run: |
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PR_NUMBER=$(cat pr_number.txt)
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echo "PR_NUMBER=$PR_NUMBER" >> $GITHUB_ENV
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rm pr_number.txt
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# Post suggestions as a comment on the PR
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- uses: googleapis/code-suggester@v4
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with:
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command: review
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pull_number: ${{ env.PR_NUMBER }}
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git_dir: '.'

‎.github/workflows/receive-pr.yml‎

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# Description: This workflow runs OpenRewrite recipes against opened pull request and upload the patch.
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# Since this pull request receives untrusted code, we should **NOT** have any secrets in the environment.
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# https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
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---
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name: receive-pr
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on:
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pull_request:
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types: [opened, synchronize]
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branches:
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- main
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concurrency:
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group: ${{ github.workflow }}-${{ github.ref }}
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cancel-in-progress: true
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defaults:
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run:
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shell: bash
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env:
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MAVEN_OPTS: -Xmx8g
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GRADLE_OPTS: -Dorg.gradle.jvmargs='-Xmx8g'
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jobs:
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upload-patch:
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runs-on: ubuntu-latest
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timeout-minutes: 10
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steps:
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- uses: actions/checkout@v4
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with:
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ref: ${{github.event.pull_request.head.ref}}
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repository: ${{github.event.pull_request.head.repo.full_name}}
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- name: Set up JDK 17
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uses: actions/setup-java@v4
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with:
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distribution: temurin
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java-version: 17
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cache: 'maven'
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# Capture the PR number
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# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#using-data-from-the-triggering-workflow
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- name: Create pr_number.txt
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run: echo "${{ github.event.number }}" > pr_number.txt
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- uses: actions/upload-artifact@v4
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with:
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name: pr_number
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path: pr_number.txt
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- name: Remove pr_number.txt
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run: rm -f pr_number.txt
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# Execute recipes
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- name: Apply OpenRewrite recipes
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run: |
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mvn --batch-mode \
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checkstyle:check -Dcheckstyle.failOnViolation=false \
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rewrite:run -Drewrite.activeRecipes=org.checkstyle.recipes.OpenRewriteRecipeBestPractices
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# Capture the diff
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- name: Create patch
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run: |
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git diff | tee git-diff.patch
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- uses: actions/upload-artifact@v4
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with:
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name: patch
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path: git-diff.patch

‎pom.xml‎

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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-checkstyle-plugin</artifactId>
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<version>${maven.checkstyle.plugin.version}</version>
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<configuration>
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<includeResources>false</includeResources>
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<includeTestResources>false</includeTestResources>
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<includeTestSourceDirectory>true</includeTestSourceDirectory>
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<configLocation>
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https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-${checkstyle.version}/config/checkstyle-checks.xml
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</configLocation>
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<propertiesLocation>config/checkstyle.properties</propertiesLocation>
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<failOnViolation>true</failOnViolation>
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<logViolationsToConsole>true</logViolationsToConsole>
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<maxAllowedViolations>0</maxAllowedViolations>
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<violationSeverity>error</violationSeverity>
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<outputFileFormat>xml</outputFileFormat>
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<outputFile>
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${project.build.directory}/checkstyle/checkstyle-report.xml
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</outputFile>
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</configuration>
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<dependencies>
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<dependency>
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<groupId>com.puppycrawl.tools</groupId>
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<goals>
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<goal>check</goal>
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</goals>
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<configuration>
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<includeResources>false</includeResources>
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<includeTestResources>false</includeTestResources>
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<includeTestSourceDirectory>true</includeTestSourceDirectory>
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<configLocation>
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https://raw.githubusercontent.com/checkstyle/checkstyle/checkstyle-${checkstyle.version}/config/checkstyle-checks.xml
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</configLocation>
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<propertiesLocation>config/checkstyle.properties</propertiesLocation>
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<failOnViolation>true</failOnViolation>
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<logViolationsToConsole>true</logViolationsToConsole>
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<maxAllowedViolations>0</maxAllowedViolations>
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<violationSeverity>error</violationSeverity>
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<outputFileFormat>xml</outputFileFormat>
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<outputFile>
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${project.build.directory}/checkstyle/checkstyle-report.xml
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</outputFile>
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</configuration>
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</execution>
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</executions>
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</plugin>

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