public static PresignedUrlListRequestDto deserializeRequest()

in teamcity-s3-sdk/src/main/java/jetbrains/buildServer/artifacts/s3/transport/PresignedUrlRequestSerializer.java [176:224]
43 lines of code
12 McCabe index (conditional complexity)

  public static PresignedUrlListRequestDto deserializeRequest(@NotNull final String data) {
    try {
      final Element document = XmlUtil.from_s(data);
      if (!document.getName().equals(OBJECT_KEYS)) {
        throw new IllegalArgumentException("Expected document name to be '" + OBJECT_KEYS + "' but got '" + document.getName() + "'");
      }
      final Collection<PresignedUrlRequestDto> result = new HashSet<>();
      final boolean isVersion2 = document.getAttribute(PRE_SIGN_V2) != null;

      final Attribute customTtlAttribute = document.getAttribute(CUSTOM_TTL);
      final Long customTtl = customTtlAttribute != null ? customTtlAttribute.getLongValue() : null;
      Attribute contentTypeAttribute = document.getAttribute(S3_UPLOAD_CONTENT_TYPE);
      String contentType = contentTypeAttribute != null ? contentTypeAttribute.getValue() : null;

      for (Object child : document.getChildren(OBJECT_KEY)) {
        final Element objectKeyEl = (Element)child;
        final Attribute nPartsAttr = objectKeyEl.getAttribute(NUMBER_OF_PARTS);
        final Attribute httpMethodAttr = objectKeyEl.getAttribute(HTTP_METHOD);

        final int numberOfParts = nPartsAttr != null ? nPartsAttr.getIntValue() : 1;
        final String httpMethod = httpMethodAttr != null ? httpMethodAttr.getValue() : null;

        final String text = objectKeyEl.getText().trim();
        if (isVersion2) {
          final Iterator iterator = objectKeyEl.getChildren(DIGEST).iterator();
          final List<String> digests = new ArrayList<>();
          while (iterator.hasNext()) {
            final Element element = (Element)iterator.next();
            digests.add(element.getValue());
          }

          final Attribute uploadIdAttr = objectKeyEl.getAttribute(UPLOAD_ID);
          final String uploadId = uploadIdAttr != null ? uploadIdAttr.getValue() : null;

          if (!digests.isEmpty()) {
            result.add(PresignedUrlRequestDto.from(text, uploadId, digests));
          } else {
            result.add(PresignedUrlRequestDto.from(text, numberOfParts, httpMethod));
          }
        } else {
          result.add(PresignedUrlRequestDto.from(text, numberOfParts, httpMethod));
        }
      }
      return new PresignedUrlListRequestDto(result, isVersion2, customTtl, contentType);
    } catch (Exception e) {
      LOGGER.warnAndDebugDetails("Got exception while parsing XML", e);
      throw new IllegalArgumentException("Request is not a valid XML");
    }
  }