Refresh token is missing error - Does it need periodic re-login to work?

[ElridgeDMello]

We have a node process that on startup executes the following initRingCentralSDK function which creates an instance of the RC SDK and logs in (using password workflow).

let rcsdk;

export function initRingCentralSDK(done) {
  rcsdk = new SDK({
    server: SDK.server[process.env.RC_ENVIRONMENT || 'sandbox'],
    appKey: process.env.RC_APP_KEY,
    appSecret: process.env.RC_APP_SECRET,
  });

  rcsdk.platform()
    .login({
      username: process.env.RC_USERNAME, // phone number in full format
      extension: process.env.RC_EXTENSION, // leave blank if direct number is used
      password: process.env.RC_PASSWORD,
    })
    .then(() => done(null, rcsdk))
    .catch(e => done(e));
}

export function getRCSDKInstance(callback) {
  if (rcsdk) {
    process.nextTick(() => callback(null, rcsdk));
  } else {
    initRingCentralSDK(callback);
  }
}

The initialized/logged in SDK instance is used elsewhere in the app to perform operations such as getting the list of extensions, and call logs using the function shown below:

function rcsdkCall({ method = 'GET', url, query = {} }, callback) {
  getRCSDKInstance((err, rcsdk) => {
    if (err) {
      return callback(err);
    }
    rcsdk.platform()
      .send({
        method,
        url,
        query,
      })
      .then((apiResponse) => {
        callback(null, apiResponse.json());
      })
      .catch((e) => {
        callback(e);
      });
  });
}

However, after a while (e.g. days) of running successfully, we start getting "Refresh token is missing" errors on the rcsdk.platform().send({...}) calls.

I understood from the docs that the SDK "will refresh tokens for you automatically". Is there something we need to do to manually update the Refresh token?

[kirill-konshin]

SDK does all refreshes for you. Please write a ticket to devsupport@ringcentral.com with more info (headers, etc.) of the refresh error, so that our team can identify the root cause of it.

I also suggest to convert getRCSDKInstance to a promise and always use all SDK-related things as promises:

export function getRCSDKInstance(callback) {
  if (rcsdk) {
    return Promise.resolve(rcsdk);
  } else {
    return initRingCentralSDK();
  }
}

// elsewhere
getRCSDKInstance().then((sdk) => sdk.platform().get(...)).then(...)