Function waitForFileCreation

src/tests/containerizer/port_mapping_tests.cpp:439–451

Wait up to timeout seconds for a file to be created. If timeout is zero, then wait indefinitely. Return true if file exists. TODO(pbrett): Consider generalizing this function and moving it to a common header.

// TODO(pbrett): Consider generalizing this function and moving it to
// a common header.
static bool waitForFileCreation(
    const string& path,
    const Duration& duration = Seconds(60))
{
  Stopwatch timer;
  timer.start();
  while (!os::exists(path)) {
    if ((duration > Duration::zero()) && (timer.elapsed() > duration))
      break;
    os::sleep(Milliseconds(50));
  }
  return os::exists(path);
}


// This test uses two containers: one listens to 'validPort' and