void ClientManagerImpl::queryAssignment()

in cpp/source/client/ClientManagerImpl.cpp [668:771]
90 lines of code
15 McCabe index (conditional complexity)

void ClientManagerImpl::queryAssignment(
    const std::string& target,
    const Metadata& metadata,
    const QueryAssignmentRequest& request,
    std::chrono::milliseconds timeout,
    const std::function<void(const std::error_code&, const QueryAssignmentResponse&)>& cb) {
  SPDLOG_DEBUG("Prepare to send query assignment request to broker[address={}]", target);
  std::shared_ptr<RpcClient> client = getRpcClient(target);

  auto callback = [&, cb](const InvocationContext<QueryAssignmentResponse>* invocation_context) {
    if (!invocation_context->status.ok()) {
      SPDLOG_WARN("Failed to query assignment. Reason: {}", invocation_context->status.error_message());
      std::error_code ec = ErrorCode::RequestTimeout;
      cb(ec, invocation_context->response);
      return;
    }

    auto&& status = invocation_context->response.status();
    std::error_code ec;
    switch (status.code()) {
      case rmq::Code::OK: {
        SPDLOG_DEBUG("Query assignment OK. Host={}", invocation_context->remote_address);
        break;
      }

      case rmq::Code::ILLEGAL_ACCESS_POINT: {
        SPDLOG_WARN("IllegalAccessPoint: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::IllegalAccessPoint;
        break;
      }

      case rmq::Code::ILLEGAL_TOPIC: {
        SPDLOG_WARN("IllegalAccessPoint: {}. Host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::IllegalTopic;
        break;
      }

      case rmq::Code::ILLEGAL_CONSUMER_GROUP: {
        SPDLOG_WARN("IllegalConsumerGroup: {}. Host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::IllegalConsumerGroup;
        break;
      }

      case rmq::Code::CLIENT_ID_REQUIRED: {
        SPDLOG_WARN("ClientIdRequired: {}. Host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::InternalClientError;
        break;
      }

      case rmq::Code::UNAUTHORIZED: {
        SPDLOG_WARN("Unauthorized: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::Unauthorized;
        break;
      }

      case rmq::Code::FORBIDDEN: {
        SPDLOG_WARN("Forbidden: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::Forbidden;
        break;
      }

      case rmq::Code::TOPIC_NOT_FOUND: {
        SPDLOG_WARN("TopicNotFound: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::TopicNotFound;
        break;
      }

      case rmq::Code::CONSUMER_GROUP_NOT_FOUND: {
        SPDLOG_WARN("ConsumerGroupNotFound: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::ConsumerGroupNotFound;
        break;
      }

      case rmq::Code::INTERNAL_SERVER_ERROR: {
        SPDLOG_WARN("InternalServerError: {}, host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::InternalServerError;
        break;
      }

      case rmq::Code::PROXY_TIMEOUT: {
        SPDLOG_WARN("GatewayTimeout: {}. Host={}", status.message(), invocation_context->remote_address);
        ec = ErrorCode::GatewayTimeout;
        break;
      }

      default: {
        SPDLOG_WARN("NotSupported: please upgrade SDK to latest release. Host={}", invocation_context->remote_address);
        ec = ErrorCode::NotSupported;
        break;
      }
    }
    cb(ec, invocation_context->response);
  };

  auto invocation_context = new InvocationContext<QueryAssignmentResponse>();
  invocation_context->task_name = fmt::format("QueryAssignment from {}", target);
  invocation_context->remote_address = target;
  for (const auto& item : metadata) {
    invocation_context->context.AddMetadata(item.first, item.second);
  }
  invocation_context->context.set_deadline(std::chrono::system_clock::now() + timeout);
  invocation_context->callback = callback;
  client->asyncQueryAssignment(request, invocation_context);
}