Response BlobContainerClient::GetAccessPolicy()

in sdk/storage/azure-storage-blobs/src/rest_client.cpp [1566:1678]
113 lines of code
34 McCabe index (conditional complexity)

    Response<Models::BlobContainerAccessPolicy> BlobContainerClient::GetAccessPolicy(
        Core::Http::_internal::HttpPipeline& pipeline,
        const Core::Url& url,
        const GetBlobContainerAccessPolicyOptions& options,
        const Core::Context& context)
    {
      auto request = Core::Http::Request(Core::Http::HttpMethod::Get, url);
      request.GetUrl().AppendQueryParameter("restype", "container");
      request.GetUrl().AppendQueryParameter("comp", "acl");
      if (options.LeaseId.HasValue() && !options.LeaseId.Value().empty())
      {
        request.SetHeader("x-ms-lease-id", options.LeaseId.Value());
      }
      request.SetHeader("x-ms-version", "2024-08-04");
      auto pRawResponse = pipeline.Send(request, context);
      auto httpStatusCode = pRawResponse->GetStatusCode();
      if (httpStatusCode != Core::Http::HttpStatusCode::Ok)
      {
        throw StorageException::CreateFromResponse(std::move(pRawResponse));
      }
      Models::BlobContainerAccessPolicy response;
      {
        const auto& responseBody = pRawResponse->GetBody();
        _internal::XmlReader reader(
            reinterpret_cast<const char*>(responseBody.data()), responseBody.size());
        enum class XmlTagEnum
        {
          kUnknown,
          kSignedIdentifiers,
          kSignedIdentifier,
          kId,
          kAccessPolicy,
          kStart,
          kExpiry,
          kPermission,
        };
        const std::unordered_map<std::string, XmlTagEnum> XmlTagEnumMap{
            {"SignedIdentifiers", XmlTagEnum::kSignedIdentifiers},
            {"SignedIdentifier", XmlTagEnum::kSignedIdentifier},
            {"Id", XmlTagEnum::kId},
            {"AccessPolicy", XmlTagEnum::kAccessPolicy},
            {"Start", XmlTagEnum::kStart},
            {"Expiry", XmlTagEnum::kExpiry},
            {"Permission", XmlTagEnum::kPermission},
        };
        std::vector<XmlTagEnum> xmlPath;
        Models::SignedIdentifier vectorElement1;
        while (true)
        {
          auto node = reader.Read();
          if (node.Type == _internal::XmlNodeType::End)
          {
            break;
          }
          else if (node.Type == _internal::XmlNodeType::StartTag)
          {
            auto ite = XmlTagEnumMap.find(node.Name);
            xmlPath.push_back(ite == XmlTagEnumMap.end() ? XmlTagEnum::kUnknown : ite->second);
          }
          else if (node.Type == _internal::XmlNodeType::Text)
          {
            if (xmlPath.size() == 3 && xmlPath[0] == XmlTagEnum::kSignedIdentifiers
                && xmlPath[1] == XmlTagEnum::kSignedIdentifier && xmlPath[2] == XmlTagEnum::kId)
            {
              vectorElement1.Id = node.Value;
            }
            else if (
                xmlPath.size() == 4 && xmlPath[0] == XmlTagEnum::kSignedIdentifiers
                && xmlPath[1] == XmlTagEnum::kSignedIdentifier
                && xmlPath[2] == XmlTagEnum::kAccessPolicy && xmlPath[3] == XmlTagEnum::kStart)
            {
              vectorElement1.StartsOn
                  = DateTime::Parse(node.Value, Azure::DateTime::DateFormat::Rfc3339);
            }
            else if (
                xmlPath.size() == 4 && xmlPath[0] == XmlTagEnum::kSignedIdentifiers
                && xmlPath[1] == XmlTagEnum::kSignedIdentifier
                && xmlPath[2] == XmlTagEnum::kAccessPolicy && xmlPath[3] == XmlTagEnum::kExpiry)
            {
              vectorElement1.ExpiresOn
                  = DateTime::Parse(node.Value, Azure::DateTime::DateFormat::Rfc3339);
            }
            else if (
                xmlPath.size() == 4 && xmlPath[0] == XmlTagEnum::kSignedIdentifiers
                && xmlPath[1] == XmlTagEnum::kSignedIdentifier
                && xmlPath[2] == XmlTagEnum::kAccessPolicy && xmlPath[3] == XmlTagEnum::kPermission)
            {
              vectorElement1.Permissions = node.Value;
            }
          }
          else if (node.Type == _internal::XmlNodeType::Attribute)
          {
          }
          else if (node.Type == _internal::XmlNodeType::EndTag)
          {
            if (xmlPath.size() == 2 && xmlPath[0] == XmlTagEnum::kSignedIdentifiers
                && xmlPath[1] == XmlTagEnum::kSignedIdentifier)
            {
              response.SignedIdentifiers.push_back(std::move(vectorElement1));
              vectorElement1 = Models::SignedIdentifier();
            }
            xmlPath.pop_back();
          }
        }
      }
      if (pRawResponse->GetHeaders().count("x-ms-blob-public-access") != 0)
      {
        response.AccessType
            = Models::PublicAccessType(pRawResponse->GetHeaders().at("x-ms-blob-public-access"));
      }
      return Response<Models::BlobContainerAccessPolicy>(
          std::move(response), std::move(pRawResponse));
    }