getOrThrow
Retrieves a required parameter from the context, throwing if not present.
Use this when a parameter is mandatory for your strategy or feature flag evaluation. Provides a descriptive error message indicating which parameter is missing.
Example:
class MyStrategy : FlippingStrategy {
override fun evaluate(context: FlippingExecutionContext): Boolean {
val userId: String = context.getOrThrow(ContextKeys.USER_ID)
// userId is guaranteed to be non-null here
return userId.startsWith("premium_")
}
}Content copied to clipboard
Return
The value associated with the key, cast to type T
Parameters
key
The parameter key to retrieve
Throws
if the key is not present in the context