def download_update(url, dest_path): logging.info(f"Downloading update from url") r = requests.get(url, stream=True) with open(dest_path, "wb") as f: for chunk in r.iter_content(chunk_size=8192): f.write(chunk) return dest_path
[Unit] Description=Standalone Software Updater Daemon After=network.target [Service] ExecStart=/usr/bin/python3 /opt/myapp/standalone_updater_daemon.py Restart=always User=daemon standaloneupdaterdaemon
def update_local_version(new_version_info): with open(CONFIG["local_version_file"], "w") as f: json.dump(new_version_info, f, indent=2) def run_update_cycle(): try: local = get_local_version() remote = fetch_remote_manifest() if remote.get("version") == local.get("version"): logging.info("Already up to date") return def download_update(url, dest_path): logging
stop_main_app() apply_update(package_path) update_local_version("version": remote["version"]) restart_main_app() logging.info("Update completed successfully") stream=True) with open(dest_path
except Exception as e: logging.exception("Update cycle failed") def main(): logging.info("Standalone Updater Daemon started") while True: run_update_cycle() time.sleep(CONFIG["poll_interval_seconds"])