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General SDK: Always getting control treatments

Problem​

When using SDK, control treatment is either always or very often returned from getTreatment call.

Root Cause​

When getTreatment call returns control, this means either:

  • The there is an issue with network connection to Harness FME servers and http calls are timing out. Enable the SDK debugging log file to verify if there are any network errors.
  • The SDK is still downloading relevant feature flag definitions and Segments from Harness FME servers and still did not finish when getTreatment call is executed.

Solution​

The control treatment is most likely to return using the mobile SDKs; JavaScript, Android and iOS. Simply because potentially the SDK runs on users' mobile devices which may have a slow network connection.

That is why for these SDKs getTreatment should always be called when the SDK_READY events fires, which will ensure it's called after the SDK downloads all the information from Harness FME servers and avoid returning control treatments.

client.on(client.Event.SDK_READY, function() {
  var treatment = client.getTreatment("SPLIT_NAME");
  if (treatment == "on") {
      // insert code here to show on treatment
  } else if (treatment == "off") {
      // insert code here to show off treatment
  } else {
      // insert your control treatment code here
  }
});