Function createGracefulTerminator

src/node/services/coderService.ts:87–129

(
  child: ChildProcess,
  options?: { sigkillAfterMs?: number }
)

const SIGKILL_GRACE_PERIOD_MS = 5000;

function createGracefulTerminator(
  child: ChildProcess,
  options?: { sigkillAfterMs?: number }
): {
  terminate: () => void;
  cleanup: () => void;
} {
  const sigkillAfterMs = options?.sigkillAfterMs ?? SIGKILL_GRACE_PERIOD_MS;
  let sigkillTimer: ReturnType<typeof setTimeout> | null = null;

  const scheduleSigkill = () => {
    if (sigkillTimer) return;
    sigkillTimer = setTimeout(() => {
      sigkillTimer = null;
      // Only attempt SIGKILL if the process still appears to be running.
      if (child.exitCode === null && child.signalCode === null) {
        try {
          child.kill("SIGKILL");
        } catch {
          // ignore
        }
      }
    }, sigkillAfterMs);
  };

  const terminate = () => {
    try {
      child.kill("SIGTERM");
    } catch {
      // ignore
    }
    scheduleSigkill();
  };

  const cleanup = () => {
    if (sigkillTimer) {
      clearTimeout(sigkillTimer);
      sigkillTimer = null;
    }
  };

  return { terminate, cleanup };
}

/**
 * Stream output from a coder CLI command line by line.