Method parseVolumePath

src/examples/test_csi_plugin.cpp:1291–1333

Try<VolumeInfo> TestCSIPlugin::parseVolumePath(const string& dir)
{
  // TODO(chhsiao): Consider using `<regex>`, which requires GCC 4.9+.

  // Make sure there's a separator at the end of the prefix so that we
  // don't accidentally slice off part of a directory.
  const string prefix = path::join(workDir, "");

  if (!strings::startsWith(dir, prefix)) {
    return Error(
        "Directory '" + dir + "' does not fall under work directory '" +
        prefix + "'");
  }

  const string basename = Path(dir).basename();

  vector<string> tokens = strings::tokenize(basename, "-", 2);
  if (tokens.size() != 2) {
    return Error("Cannot find delimiter '-' in '" + basename + "'");
  }

  Try<Bytes> capacity = Bytes::parse(tokens[0]);
  if (capacity.isError()) {
    return Error(
        "Failed to parse capacity from '" + tokens[0] +
        "': " + capacity.error());
  }

  Try<string> name = http::decode(tokens[1]);
  if (name.isError()) {
    return Error(
        "Failed to decode volume name from '" + tokens[1] +
        "': " + name.error());
  }

  CHECK_EQ(dir, getVolumePath(capacity.get(), name.get()))
    << "Cannot reconstruct volume path '" << dir << "' from volume name '"
    << name.get() << "' and capacity " << capacity.get();

  const string volumeId = volumeIdPath ? dir : name.get();

  return VolumeInfo{capacity.get(), volumeId, dir, volumeMetadata};
}


Option<VolumeInfo> TestCSIPlugin::findVolumeByName(const string& name)