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ShantKhatriShantKhatri
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Add GitCompare workflow and CommitHunter script for build comparison
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‎.github/CommitHunter/commit_hunter.sh‎

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#!/bin/bash
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parse_java_version() {
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local version_output="$1"
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local result=""
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# Debug output
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echo "Parsing version output: $version_output" >&2
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if [[ $version_output =~ openjdk\ version\ \"([0-9]+)\.[0-9]+\.[0-9]+-beta ]]; then
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result+="openjdk_version=${BASH_REMATCH[1]}\n"
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fi
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if [[ $version_output =~ OpenJ9[[:space:]]*-[[:space:]]*([0-9a-f]+) ]]; then
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result+="openj9_commit=${BASH_REMATCH[1]}\n"
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fi
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if [[ $version_output =~ OMR[[:space:]]*-[[:space:]]*([0-9a-f]+) ]]; then
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result+="omr_commit=${BASH_REMATCH[1]}\n"
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fi
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if [[ $version_output =~ JCL[[:space:]]*-[[:space:]]*([0-9a-f]+) ]]; then
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result+="jcl_commit=${BASH_REMATCH[1]}\n"
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fi
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echo -e "$result"
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}
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generate_compare_urls() {
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local good_info="$1"
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local bad_info="$2"
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declare -A good
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declare -A bad
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while IFS='=' read -r key value; do
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if [[ -n $key ]]; then
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good[$key]="$value"
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fi
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done <<< "$good_info"
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while IFS='=' read -r key value; do
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if [[ -n $key ]]; then
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bad[$key]="$value"
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fi
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done <<< "$bad_info"
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echo "OpenJ9: https://github.com/eclipse-openj9/openj9/compare/${good[openj9_commit]}...${bad[openj9_commit]}"
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echo "OMR: https://github.com/eclipse-omr/omr/compare/${good[omr_commit]}...${bad[omr_commit]}"
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echo "JCL: https://github.com/ibmruntimes/openj9-openjdk-jdk${good[openjdk_version]}/compare/${good[jcl_commit]}...${bad[jcl_commit]}"
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}
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if [ $# -ne 2 ]; then
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echo "Usage: $0 <good_build> <bad_build>"
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exit 1
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fi
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GOOD_BUILD="$1"
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BAD_BUILD="$2"
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# Debug output
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echo "Good build: $GOOD_BUILD" >&2
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echo "Bad build: $BAD_BUILD" >&2
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GOOD_INFO=$(parse_java_version "$GOOD_BUILD")
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BAD_INFO=$(parse_java_version "$BAD_BUILD")
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# Debug output
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echo "Good info: $GOOD_INFO" >&2
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echo "Bad info: $BAD_INFO" >&2
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required_fields=("openjdk_version" "openj9_commit" "omr_commit" "jcl_commit")
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for field in "${required_fields[@]}"; do
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if ! echo "$GOOD_INFO" | grep -q "^$field=" || ! echo "$BAD_INFO" | grep -q "^$field="; then
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echo "Error: Missing required field: $field" >&2
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exit 1
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fi
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done
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generate_compare_urls "$GOOD_INFO" "$BAD_INFO"

‎.github/workflows/gitcompare.yml‎

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name: GitCompare
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on:
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issue_comment:
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types: [created]
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jobs:
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parse-comment:
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if: github.event.issue.pull_request && startsWith(github.event.comment.body, '/gitcompare')
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runs-on: ubuntu-latest
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permissions:
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contents: read
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issues: write
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outputs:
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good_build: ${{ steps.parse.outputs.good_build }}
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bad_build: ${{ steps.parse.outputs.bad_build }}
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steps:
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- name: Parse comment
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id: parse
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env:
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COMMENT_BODY: ${{ github.event.comment.body }}
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run: |
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echo "Comment body: $COMMENT_BODY"
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# Remove the /gitcompare command
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COMMENT=${COMMENT_BODY#/gitcompare}
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# Split into good and bad builds
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GOOD_BUILD=$(echo "$COMMENT" | awk '/^---/{exit} {print}')
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BAD_BUILD=$(echo "$COMMENT" | awk '/^---/,EOF' | sed '1d')
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# Clean up whitespace
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GOOD_BUILD=$(echo "$GOOD_BUILD" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
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BAD_BUILD=$(echo "$BAD_BUILD" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
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# Validate builds
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if [ -z "$GOOD_BUILD" ] || [ -z "$BAD_BUILD" ]; then
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echo "Error: Invalid format. Please provide both good and bad builds separated by ---"
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exit 1
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fi
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# Set outputs
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{
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echo "good_build<<EOF"
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echo "$GOOD_BUILD"
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echo "EOF"
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} >> $GITHUB_OUTPUT
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{
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echo "bad_build<<EOF"
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echo "$BAD_BUILD"
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echo "EOF"
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} >> $GITHUB_OUTPUT
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compare:
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needs: parse-comment
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runs-on: ubuntu-latest
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permissions:
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contents: read
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issues: write
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steps:
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- name: Checkout repository
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uses: actions/checkout@v4
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- name: Run CommitHunter
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id: run_commit_hunter
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env:
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GOOD_BUILD: ${{ needs.parse-comment.outputs.good_build }}
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BAD_BUILD: ${{ needs.parse-comment.outputs.bad_build }}
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run: |
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cd CommitHunter
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bash commit_hunter.sh "$GOOD_BUILD" "$BAD_BUILD" > output.txt
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cat output.txt
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- name: Parse URLs from output
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id: parse_urls
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run: |
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url_openj9=$(grep "OpenJ9:" output.txt | awk '{print $2}')
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url_omr=$(grep "OMR:" output.txt | awk '{print $2}')
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url_jcl=$(grep "JCL:" output.txt | awk '{print $2}')
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echo "url_openj9=$url_openj9" >> $GITHUB_OUTPUT
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echo "url_omr=$url_omr" >> $GITHUB_OUTPUT
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echo "url_jcl=$url_jcl" >> $GITHUB_OUTPUT
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- name: Prepare comment
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run: |
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echo "## 🔍 GitCompare Results" > comment.md
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echo "" >> comment.md
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echo "### OpenJ9 Changes" >> comment.md
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echo "${{ steps.parse_urls.outputs.url_openj9 }}" >> comment.md
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echo "" >> comment.md
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echo "### OMR Changes" >> comment.md
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echo "${{ steps.parse_urls.outputs.url_omr }}" >> comment.md
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echo "" >> comment.md
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echo "### JCL Changes" >> comment.md
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echo "${{ steps.parse_urls.outputs.url_jcl }}" >> comment.md
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echo "" >> comment.md
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echo "> 💡 **Note:** These links show the differences between the specified builds."
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- name: Set issue number env
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run: echo "ISSUE_NUMBER=${{ github.event.issue.number }}" >> $GITHUB_ENV
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- name: Comment on PR (Python)
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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GITHUB_REPOSITORY: ${{ github.repository }}
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run: |
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pip install PyGithub
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python <<EOF
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import os
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from github import Github
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with open("comment.md", "r", encoding="utf-8") as f:
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comment_body = f.read()
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token = os.environ["GITHUB_TOKEN"]
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repo_name = os.environ["GITHUB_REPOSITORY"]
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issue_number = int(os.environ["ISSUE_NUMBER"])
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g = Github(token)
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repo = g.get_repo(repo_name)
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issue = repo.get_issue(number=issue_number)
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issue.create_comment(comment_body)
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EOF

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