def _start_grafana()

in smallpond/session.py [0:0]

• 25 lines of code
• 3 McCabe index (conditional complexity)

    def _start_grafana(self) -> Optional[subprocess.Popen]:
        """
        Start grafana server if it exists.
        """
        homepath = self._platform.grafana_homepath()
        if homepath is None:
            logger.warning("grafana is not found")
            return None
        os.makedirs(f"{self._runtime_ctx.log_root}/grafana", exist_ok=True)
        proc = subprocess.Popen(
            [
                shutil.which("grafana"),
                "server",
                "--config",
                "/tmp/ray/session_latest/metrics/grafana/grafana.ini",
                "-homepath",
                homepath,
                "web",
            ],
            stdout=open(f"{self._runtime_ctx.log_root}/grafana/grafana.log", "w"),
            env={
                "GF_SERVER_HTTP_PORT": "8122",  # redirect to an available port
                "GF_SERVER_ROOT_URL": os.environ.get("RAY_GRAFANA_IFRAME_HOST") or "http://localhost:8122",
                "GF_PATHS_DATA": f"{self._runtime_ctx.log_root}/grafana/data",
            },
        )
        logger.info(f"started grafana at http://localhost:8122")
        return proc