servo bisect

README.md

git bisect start
git bisect bad <bad-commit>
git bisect good <good-commit>
git bisect run ../bisect.py

bisect.py

#!/usr/bin/env python3

import subprocess
import os
import shutil
import tarfile
import json
import sys

ARTIFACT_NAME = "linux-release"
RUN_DIR = "artifact-run"
ARGS = ["https://curran.github.io/HTML5Examples/canvas/smileyFace.html"]

def run_cmd(cmd, cwd=None):
    result = subprocess.run(cmd, shell=True, capture_output=True, text=True, cwd=cwd)
    return result.stdout.strip(), result.returncode

def get_commit_sha():
    out, _ = run_cmd("git rev-parse HEAD")
    return out

def find_run_for_commit(commit_sha):
    print(f"🔍 Searching for CI run for commit: {commit_sha}")
    cmd = f'gh run list --workflow Main -c {commit_sha} -e push --json databaseId'
    output, code = run_cmd(cmd)
    if code != 0:
        print("❌ Failed to fetch run list")
        return None
    runs = json.loads(output)
    for run in runs:
        return run['databaseId']
    return None

def download_artifact(run_id):
    print(f"⬇️  Downloading artifact from run ID: {run_id}")
    shutil.rmtree(RUN_DIR, ignore_errors=True)
    os.makedirs(RUN_DIR, exist_ok=True)
    cmd = f'gh run download {run_id} -n "{ARTIFACT_NAME}" -D {RUN_DIR}'
    _, code = run_cmd(cmd)
    return code == 0

def extract_zip():
    for fname in os.listdir(RUN_DIR):
        if fname.endswith(".tar.gz"):
            zip_path = os.path.join(RUN_DIR, fname)
            with tarfile.open(zip_path) as zip_ref:
                zip_ref.extractall(RUN_DIR)
            print(f"✅ Extracted: {zip_path}")
            return True
    print("❌ No zip file found in artifact")
    return False

def run_servo():
    # Look for the servo binary
    for root, _, files in os.walk(RUN_DIR):
        if "servo" in files:
            servo_path = os.path.join(root, "servo")
            print(f"🚀 Running: {servo_path} {ARGS}")
            os.chmod(servo_path, 0o755)
            subprocess.run([servo_path, *ARGS])
            return True
    print("❌ 'servo' binary not found in artifact")
    return False

def main():
    commit = get_commit_sha()
    print(f"\n==== Checking Commit: {commit} ====\n")

    run_id = find_run_for_commit(commit)
    if not run_id:
        print("⚠️  No successful CI run for this commit.")
        sys.exit(125)

    if not download_artifact(run_id):
        print("⚠️  Failed to download artifact.")
        sys.exit(125)

    if not extract_zip():
        sys.exit(125)

    if not run_servo():
        sys.exit(125)

    # Ask user for input
    print("\n✅ Manual Evaluation:")
    print("  [g] good")
    print("  [b] bad")
    print("  [s] skip")

    choice = input("Your choice: ").strip().lower()
    if choice == "g":
        sys.exit(0)
    elif choice == "b":
        sys.exit(1)
    else:
        sys.exit(125)

if __name__ == "__main__":
    main()