private ConnectionConfig resolveConnectionName()

in core/src/main/java/com/google/cloud/sql/core/Connector.java [186:206]

• 15 lines of code
• 4 McCabe index (conditional complexity)

  private ConnectionConfig resolveConnectionName(ConnectionConfig config) {
    // If domainName is not set, return the original configuration unmodified.
    if (Strings.isNullOrEmpty(config.getDomainName())) {
      return config;
    }

    // If both domainName and cloudSqlInstance are set, ignore the domain name. Return a new
    // configuration with domainName set to null.
    if (!Strings.isNullOrEmpty(config.getCloudSqlInstance())) {
      return config.withDomainName(null);
    }

    // If only domainName is set, resolve the domain name.
    try {
      final CloudSqlInstanceName name = resolveDomain(config);
      return config.withCloudSqlInstance(name.getConnectionName());
    } catch (IllegalArgumentException e) {
      throw new IllegalArgumentException(
          String.format("Cloud SQL connection name is invalid: \"%s\"", config.getDomainName()), e);
    }
  }