Kotlin App Config

Kotlin Application Configuration Skill

NOTE: lumi-api uses ServerEnv (see no.nav.lumi.config.ServerEnv) for type-safe configuration and local defaults. Prefer that over introducing a new sealed-environment framework.

Use ServerEnv (repo standard)

Pattern

• Keep all environment variable access centralized in ServerEnv.
• Prefer explicit, named properties over passing Map<String, String> around.
• Use NAIS_CLUSTER_NAME to switch between local and NAIS defaults.

Example usage

import no.nav.lumi.config.ServerEnv

fun main() {
    val env = ServerEnv.fromEnv()
    // Pass env values into module/config installation rather than reading System.getenv() everywhere.
}

Boundaries

✅ Always

• Add new environment variables to ServerEnv and document the local default if applicable.

⚠️ Ask First

• Introducing new config frameworks (Konfig, sealed env abstractions) in this repo.

🚫 Never

• Read env vars ad-hoc across the codebase when ServerEnv is the established pattern.

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