Function get_attribute

nanofi/src/api/nanofi.cpp:400–411

* Obtains the attribute. * @param ff flow file record * @param key key * @param caller_attribute caller supplied object in which we will copy the data ptr * @return 0 if successful, -1 if the key does not exist */

 * @return 0 if successful, -1 if the key does not exist
 */
int8_t get_attribute(const flow_file_record * ff, attribute * caller_attribute) {
  NULL_CHECK(-1, ff, caller_attribute);
  NULL_CHECK(-1, ff->attributes, caller_attribute->key);
  auto attribute_map = static_cast<AttributeMap*>(ff->attributes);
  auto find = attribute_map->find(caller_attribute->key);
  if (find != attribute_map->end()) {
    caller_attribute->value = static_cast<void*>(const_cast<char*>(find->second.data()));
    caller_attribute->value_size = find->second.size();
    return 0;
  }
  return -1;
}

int get_attribute_quantity(const flow_file_record *ff) {
  NULL_CHECK(0, ff);