@Override
  public NodeMetadata apply(VirtualMachine from) {

    // convert the result object to a jclouds NodeMetadata
    NodeMetadataBuilder builder = new NodeMetadataBuilder();
    try {
      builder.id(from.getConfig().getInstanceUuid());
      builder.providerId(from.getConfig().getLocationId() + "");
      builder.name(from.getName());
      builder.location(findLocationForVirtualMachine.apply(from));
      builder.group(parseGroupFromName(from.getName()));

      builder.operatingSystem(
          new OperatingSystemBuilder()
              .name(from.getConfig().getGuestFullName())
              .description(from.getConfig().getGuestFullName())
              .is64Bit(from.getConfig().getGuestId().contains("64"))
              .build());
      builder.hardware(findHardwareForVirtualMachine.apply(from));

      builder.state(domainStateToNodeState.get(from.getRuntime().getPowerState()));
      // builder.publicAddresses(ImmutableSet.<String> of(from.publicAddress));
      // builder.privateAddresses(ImmutableSet.<String> of(from.privateAddress));
      builder.credentials(credentialStore.get("node#" + from.getName()));

    } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    return builder.build();
  }
  protected NodeMetadataBuilder buildInstance(
      final RunningInstance instance, NodeMetadataBuilder builder) {
    builder.providerId(instance.getId());
    builder.id(instance.getRegion() + "/" + instance.getId());
    String group = getGroupForInstance(instance);
    builder.group(group);
    // standard convention from aws-ec2, which might not be re-used outside.
    if (instance.getPrivateDnsName() != null)
      builder.hostname(instance.getPrivateDnsName().replaceAll("\\..*", ""));
    addCredentialsForInstance(builder, instance);
    builder.status(instanceToNodeStatus.get(instance.getInstanceState()));
    builder.backendStatus(instance.getRawState());

    // collect all ip addresses into one bundle in case the api mistakenly put a private address
    // into the public address field
    Builder<String> addressesBuilder = ImmutableSet.builder();
    if (Strings.emptyToNull(instance.getIpAddress()) != null)
      addressesBuilder.add(instance.getIpAddress());
    // Add dnsName (if available) to addresses, when the IPAddress is null
    // happens on Eucalyptus sometimes.
    else if (Strings.emptyToNull(instance.getDnsName()) != null)
      addressesBuilder.add(instance.getDnsName());
    if (Strings.emptyToNull(instance.getPrivateIpAddress()) != null)
      addressesBuilder.add(instance.getPrivateIpAddress());

    Set<String> addresses = addressesBuilder.build();

    builder.publicAddresses(filter(addresses, not(IsPrivateIPAddress.INSTANCE)));
    builder.privateAddresses(filter(addresses, IsPrivateIPAddress.INSTANCE));
    builder.hardware(parseHardware(instance));
    Location location = getLocationForAvailabilityZoneOrRegion(instance);
    builder.location(location);
    builder.imageId(instance.getRegion() + "/" + instance.getImageId());

    // extract the operating system from the image
    RegionAndName regionAndName = new RegionAndName(instance.getRegion(), instance.getImageId());
    try {
      Image image = imageMap.get().getUnchecked(regionAndName);
      if (image != null) builder.operatingSystem(image.getOperatingSystem());
    } catch (CacheLoader.InvalidCacheLoadException e) {
      logger.debug("image not found for %s: %s", regionAndName, e);
    } catch (UncheckedExecutionException e) {
      logger.debug("error getting image for %s: %s", regionAndName, e);
    }
    return builder;
  }
  @Override
  public NodeMetadata apply(ServerInZone serverInZone) {
    Location zone = locationIndex.get().get(serverInZone.getZone());
    checkState(
        zone != null,
        "location %s not in locationIndex: %s",
        serverInZone.getZone(),
        locationIndex.get());
    Server from = serverInZone.getServer();

    NodeMetadataBuilder builder = new NodeMetadataBuilder();
    builder.id(serverInZone.slashEncode());
    builder.providerId(from.getId());
    builder.name(from.getName());
    builder.hostname(from.getName());
    builder.location(
        from.getHostId() != null
            ? new LocationBuilder()
                .scope(LocationScope.HOST)
                .id(from.getHostId())
                .description(from.getHostId())
                .parent(zone)
                .build()
            : zone);
    addMetadataAndParseTagsFromCommaDelimitedValue(builder, from.getMetadata());
    builder.group(nodeNamingConvention.groupInUniqueNameOrNull(from.getName()));
    builder.imageId(
        ZoneAndId.fromZoneAndId(serverInZone.getZone(), from.getImage().getId()).slashEncode());
    builder.operatingSystem(findOperatingSystemForServerOrNull(serverInZone));
    builder.hardware(findHardwareForServerOrNull(serverInZone));
    builder.status(from.getStatus().getNodeStatus());
    builder.publicAddresses(
        filter(
            transform(
                filter(from.getAddresses().values(), Predicates.not(isPrivateAddress)),
                AddressToStringTransformationFunction.INSTANCE),
            isInet4Address));
    builder.privateAddresses(
        filter(
            transform(
                filter(from.getAddresses().values(), isPrivateAddress),
                AddressToStringTransformationFunction.INSTANCE),
            isInet4Address));

    return builder.build();
  }