EnvHelpers.cc

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#include "eon/EnvHelpers.hpp"
#include "eon/BaseStructures.h"
#include "eon/EonLogger.h"
 
namespace eonc::helpers {
 
std::string get_value_from_env_or_param(const char *env_variable,
                                        const std::string &param_value,
                                        const std::string &default_value,
                                        const std::string &warning_message,
                                        const bool is_mandatory) {
  const char *env_value = std::getenv(env_variable);
  if (env_value != nullptr) {
    return std::string(env_value);
  }
 
  if (!param_value.empty()) {
    return param_value;
  }
 
  if (is_mandatory) {
    throw std::runtime_error(
        "Environment variable " + std::string(env_variable) +
        " is not set and no parameter value provided. Please set it in the "
        "configuration or as an environment variable.\n");
  }
 
  if (!default_value.empty() && !warning_message.empty()) {
    EONC_LOG_WARNING("{}", warning_message);
  }
 
  return default_value;
}
 
} // namespace eonc::helpers