cloud_oadr-vtn/processes/registration.js

'use strict';

const { v4 } = require('uuid');
const { vtnId } = require('../config');
const logger = require('../logger');
const nantum = require('../modules/nantum');

async function registerParty(
  oadrCreatePartyRegistration,
  clientCertificateCn,
  clientCertificateFingerprint,
) {
  logger.info(
    'registerParty',
    oadrCreatePartyRegistration,
    clientCertificateCn,
    clientCertificateFingerprint,
  );

  const requestVenId = oadrCreatePartyRegistration.venId;
  validateVenId(requestVenId, clientCertificateFingerprint, true);

  let nantumRegistration = await nantum.fetchRegistration(requestVenId);

  if (nantumRegistration) {
    if (nantumRegistration.common_name !== clientCertificateCn) {
      const error = new Error('Client certificate CN mismatch');
      error.responseCode = 452;
      throw error;
    }
    if (nantumRegistration.registration_id == null) {
      const registrationId = v4().replace(/-/g, '');
      nantumRegistration.registration_id = registrationId;
      await nantum.updateRegistration(nantumRegistration);
    }
  } else {
    const registrationId = v4().replace(/-/g, '');
    nantumRegistration = {
      common_name: clientCertificateCn,
      ven_id: requestVenId,
      registration_id: registrationId,
    };
    await nantum.updateRegistration(nantumRegistration);
  }

  return nantumRegistrationToOadrRegistrationCreated(
    oadrCreatePartyRegistration.requestId,
    nantumRegistration,
  );
}

async function query(oadrQueryRegistration, clientCertificateCn, clientCertificateFingerprint) {
  logger.info('query', oadrQueryRegistration, clientCertificateCn, clientCertificateFingerprint);

  const requestVenId = clientCertificateFingerprint;

  let nantumRegistration = await nantum.fetchRegistration(requestVenId);

  if (nantumRegistration) {
    if (nantumRegistration.common_name !== clientCertificateCn) {
      const error = new Error('Client certificate CN mismatch');
      error.responseCode = 452;
      throw error;
    }
  } else {
    // response payload should not contain ven_id or registration_id
    nantumRegistration = {};
  }

  return nantumRegistrationToOadrRegistrationCreated(
    oadrQueryRegistration.requestId,
    nantumRegistration,
  );
}

async function cancelParty(
  oadrCancelPartyRegistration,
  clientCertificateCn,
  clientCertificateFingerprint,
) {
  logger.info(
    'cancelParty',
    oadrCancelPartyRegistration,
    clientCertificateCn,
    clientCertificateFingerprint,
  );

  const requestVenId = oadrCancelPartyRegistration.venId;
  validateVenId(requestVenId, clientCertificateFingerprint, false);
  const venId = clientCertificateFingerprint;

  let nantumRegistration = await nantum.fetchRegistration(requestVenId);
  let cancelledRegistrationId;

  if (nantumRegistration) {
    if (nantumRegistration.common_name !== clientCertificateCn) {
      const error = new Error('Client certificate CN mismatch');
      error.responseCode = 452;
      throw error;
    }

    cancelledRegistrationId = nantumRegistration.registration_id;

    // clear all registration data
    nantumRegistration = {
      ven_id: requestVenId,
      common_name: clientCertificateCn,
    };
    await nantum.updateRegistration(nantumRegistration);
  }

  if (cancelledRegistrationId == null) {
    const error = new Error('No current registration for VenID');
    error.responseCode = 452;
    throw error;
  }

  return {
    responseRequestId: oadrCancelPartyRegistration.requestId || '',
    responseCode: '200',
    responseDescription: 'OK',
    venId: venId,
    registrationId: cancelledRegistrationId,
  };
}

function nantumRegistrationToOadrRegistrationCreated(
  requestId,
  nantumRegistration,
) {
  return {
    responseRequestId: requestId || '',
    responseCode: '200',
    responseDescription: 'OK',
    registrationId: nantumRegistration.registration_id,
    venId: nantumRegistration.ven_id,
    vtnId: vtnId,
    pollFreqDuration: 'PT10S',
  };
}

function validateVenId(requestVenId, clientCertificateFingerprint, required)  {
  if (requestVenId === clientCertificateFingerprint) {
    return;
  }
  if (!required && requestVenId == null) {
    return;
  }
  if (required && requestVenId == null) {
    const error = new Error('VenID is missing');
    error.responseCode = 452;
    throw error;
  }
  const error = new Error('VenID is invalid');
  error.responseCode = 452;
  throw error;
}

module.exports = {
  cancelParty,
  query,
  registerParty,
};