Roku SDK reference

Overview

This reference guide documents basic usage of our Roku SDK, and explains in detail how these features work. LaunchDarkly's SDKs are open source. The source is available in its GitHub repository and its generated API reference.

You can also use this SDK to clone and run a sample application.

The Roku SDK is written in BrightScript.

Getting started

After you complete the Getting Started process, follow these instructions to start using the LaunchDarkly SDK in your Roku Application.

We provide releases on GitHub. Download the latest release and extract the provided files into your source tree. You may need to rename the paths inside LaunchDarklyTask.xml depending on your project structure.

For SceneGraph usage add a LaunchDarklyTask node to your scene.

To create a client instance, you need your environment's mobile key. This authorizes your application to connect to a particular environment within LaunchDarkly. Your mobile key is available in the Projects tab of your Account settings page. Mobile keys are not secret and you can expose them in your client-side code without risk. Never embed a server-side SDK key into a client-side application.

Here's how:

REM get a reference to to task
launchDarklyNode = m.top.findNode("my-node-name")
REM create configuration
config = LaunchDarklyConfig("MY_MOBILE_KEY", launchDarklyNode)
REM create a user
user = LaunchDarklyUser("user-key")
REM initialize the client
LaunchDarklySGInit(config, user)
COPY

For each SceneGraph component you want to use the SDK in you need to initialize an interface to talk to the SceneGraph. This interface provides all the expected client functionality, such as evaluation.

Here's how:

REM create the scenegraph communication wrapper
launchDarkly = LaunchDarklySG(launchDarklyNode)
REM use the client
value = launchDarkly.boolVariation("MY_FLAG_KEY", false)
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Creating a client outside of the SceneGraph API is similar. In the legacy API you do not need LaunchDarklySGInit or the LaunchDarklySG functions.

Here's how:

REM get a reference to the task
launchDarklyNode = m.top.findNode("MY_NODE_NAME")
REM create configuration
config = LaunchDarklyConfig("MY_MOBILE_KEY", launchDarklyNode)
REM create a user
user = LaunchDarklyUser("user-key")
REM create message port
messagePort = createObject("roMessagePort")
REM initialize the client
launchDarkly = LaunchDarkly(config, user, messagePort)
REM use the client
value = launchDarkly.boolVariation("MY_FLAG_KEY", false)
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If not using the SceneGraph you need to poll events to drive the client in your standard event loop:

while (true)
    REM do not wait forever or timers will break
    msg = wait(3000, messagePort)
    if launchDarkly.handleMessage(msg) then
        REM this message was for the client
    else
        REM handle non client messages
    end if
end while
COPY

Supported features

This SDK supports the following features:

• Configuration
• Evaluating flags
• Flag evaluation reasons
• Flushing events
• Getting all flags
• Identifying and changing users
• Logging configuration
• Sending custom events
• User configuration