Method append

src/log/log.cpp:576–591

Future<Option<Log::Position>> LogWriterProcess::append(const string& bytes)
{
  VLOG(1) << "Attempting to append " << bytes.size() << " bytes to the log";

  if (coordinator == nullptr) {
    return Failure("No election has been performed");
  }

  if (error.isSome()) {
    return Failure(error.get());
  }

  return coordinator->append(bytes)
    .then(lambda::bind(&Self::position, lambda::_1))
    .onFailed(defer(self(), &Self::failed, "Failed to append", lambda::_1));
}


Future<Option<Log::Position>> LogWriterProcess::truncate(