This repo is archived. The latest functionality and newest versions of this SDK will be located in the main monorepo: https://github.com/vexilla/vexilla/tree/main/clients/kotlin
This is the Kotlin client library for Vexilla, a static file based feature flag system.
To get started is easy.
Add the client to your imports.
// Not sure yetYou will need to create a Client within your app. This optionally takes in the customInstanceHash for use with gradual rollout.
After creation, call fetchFlags. This can be chained from the constructor since it returns the client instance.
val client = Client(
"dev",
"https://BUCKET_NAME.s3-website-AWS_REGION.amazonaws.com",
userId
).getFlags()Use the created client to check if a feature should be on.
shouldGradual := client.should(FEATURE_NAME)val client = Client(
"dev",
"https://BUCKET_NAME.s3-website-AWS_REGION.amazonaws.com",
userId
).getFlags()
if client.should(FEATURE_NAME) {
// Do the thing
}Feature flags are useful for enabling or disabling parts of your application without having to redeploy. In some cases such as mobile applications, the redeploy could take up to a week.
See more about them here:
Feature Flags are also a fundamental building block for things such as A/B testing.
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You configure the Config UI with your hosting credentials. These are stored in LocalStorage. Your credentials should have a limited scope of permissions.
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You add environments to the Config UI.
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Then you add features. These can be a toggle or a gradual rollout.
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Then you upload the json to your static hosting provider. You can also download ot copy the JSON to your clipboard for other uses.
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Your applications include a client library as a dependency and the client consumes the JSON config.
-
Finally your application uses the client you created to determine if a feature
shouldbe on.
If you are having issues, please open a Github Issue on the relevant repo. (client, app, docs, etc.).
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