Split OpenFeature Provider for NodeJS

Overview

This Provider is designed to allow the use of OpenFeature with Split, the platform for controlled rollouts, serving features to your users via the Split feature flag to manage your complete customer experience.

Compatibility

It supports Node.js version 14.x or later.

Getting started

Below is a simple example that describes the instantiation of the Split Provider. Please see the OpenFeature Documentation for details on how to use the OpenFeature SDK.

Add the Split provider

npm install @splitsoftware/openfeature-js-split-provider

Confirm peer dependencies are installed

npm install @splitsoftware/splitio
npm install @openfeature/server-sdk

Register the Split provider with OpenFeature using sdk apiKey

const OpenFeature = require('@openfeature/server-sdk').OpenFeature;
const OpenFeatureSplitProvider = require('@splitsoftware/openfeature-js-split-provider').OpenFeatureSplitProvider;

const authorizationKey = 'your auth key'
const provider = new OpenFeatureSplitProvider(authorizationKey);
OpenFeature.setProvider(provider);

Register the Split provider with OpenFeature using splitFactory

const OpenFeature = require('@openfeature/server-sdk').OpenFeature;
const SplitFactory = require('@splitsoftware/splitio').SplitFactory;
const OpenFeatureSplitProvider = require('@splitsoftware/openfeature-js-split-provider').OpenFeatureSplitProvider;

const authorizationKey = 'your auth key'
const splitFactory = SplitFactory({core: {authorizationKey}});
const provider = new OpenFeatureSplitProvider(splitFactory);
OpenFeature.setProvider(provider);

Register the Split provider with OpenFeature using splitClient

const OpenFeature = require('@openfeature/server-sdk').OpenFeature;
const SplitFactory = require('@splitsoftware/splitio').SplitFactory;
const OpenFeatureSplitProvider = require('@splitsoftware/openfeature-js-split-provider').OpenFeatureSplitProvider;

const authorizationKey = 'your auth key'
const splitClient = SplitFactory({core: {authorizationKey}}).client();
const provider = new OpenFeatureSplitProvider({splitClient});
OpenFeature.setProvider(provider);

Use of OpenFeature with Split

After the initial setup you can use OpenFeature according to their documentation.

One important note is that the Split Provider requires a targeting key to be set. Often times this should be set when evaluating the value of a flag by setting an EvaluationContext which contains the targeting key. An example flag evaluation is

const client = openFeature.getClient('CLIENT_NAME');

const context: EvaluationContext = {
  targetingKey: 'TARGETING_KEY',
};
const boolValue = await client.getBooleanValue('boolFlag', false, context);

If the same targeting key is used repeatedly, the evaluation context may be set at the client level

const context: EvaluationContext = {
  targetingKey: 'TARGETING_KEY',
};
client.setEvaluationContext(context)

or at the OpenFeatureAPI level

const context: EvaluationContext = {
  targetingKey: 'TARGETING_KEY',
};
OpenFeatureAPI.getInstance().setCtx(context)

If the context was set at the client or api level, it is not required to provide it during flag evaluation.

Evaluate with details

Use the get*Details(...) APIs to get the value and rich context (variant, reason, error code, metadata). This provider includes the Split treatment config as a raw JSON string under flagMetadata["config"]

const booleanTreatment = await client.getBooleanDetails('boolFlag', false, context);

const config = booleanTreatment.flagMetadata.config

Tracking

To use track(eventName, context, details) you must provide:

• A non-blank eventName.
• A context with:
  • targetingKey (non-blank).
  • trafficType (string, e.g. "user" or "account").

Optional:

• details with:
  • value: numeric event value (defaults to 0).
  • properties: map of attributes (prefer primitives: string/number/boolean/null).

Example:

const context = { targetingKey: 'user-123', trafficType: 'account' }
const details = { value: 19.99, plan: 'pro', coupon: 'WELCOME10' }

client.track('checkout.completed', context, details)

Submitting issues

The Split team monitors all issues submitted to this issue tracker. We encourage you to use this issue tracker to submit any bug reports, feedback, and feature enhancements. We'll do our best to respond in a timely manner.

Contributing

Please see Contributors Guide to find all you need to submit a Pull Request (PR).

License

Licensed under the Apache License, Version 2.0. See: Apache License.

About Split

Split is the leading Feature Delivery Platform for engineering teams that want to confidently deploy features as fast as they can develop them. Split’s fine-grained management, real-time monitoring, and data-driven experimentation ensure that new features will improve the customer experience without breaking or degrading performance. Companies like Twilio, Salesforce, GoDaddy and WePay trust Split to power their feature delivery.

To learn more about Split, contact hello@split.io, or get started with feature flags for free at https://www.split.io/signup.

Split has built and maintains SDKs for:

• .NET Github Docs
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• Flutter Github Docs
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• Python Github Docs
• React Github Docs
• React Native Github Docs
• Redux Github Docs
• Ruby Github Docs

For a comprehensive list of open source projects visit our Github page.

Learn more about Split:

Visit split.io/product for an overview of Split, or visit our documentation at help.split.io for more detailed information.