kora-di-compile

Kora DI Compile — Compile-Time Dependency Injection

Kora sub-skill — obey the kora-v1 meta rules on every task: R0 ensure .kora-agent/ docs+examples are cloned · R1 read this sub-skill before writing code · R2 Kora APIs only — no Spring/Micronaut/Quarkus, no invented annotations or config keys · R3 journal any incorrect Kora usage. Add comments/Javadoc only if asked.

Version: Kora 1.x | Java: 25+ | Kotlin: 1.9+ | Gradle: 9+

Kora uses compile-time code generation — all dependency wiring happens at compile time via annotation processors. No reflection, no runtime proxies. Errors are caught at compile time, not runtime.

Read this skill when: bootstrapping @KoraApp, creating @Component/@Module, multi-module projects with @KoraSubmodule, debugging DI errors ("no factory found", "ambiguous dependency", circular dependencies).

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Quick Start

Task Progress:
- [ ] 1. Add Kora BOM and annotation processor to build.gradle
- [ ] 2. Create @KoraApp interface with main() entry point
- [ ] 3. Extend required modules (HoconConfigModule, LogbackModule)
- [ ] 4. Create @Component classes with constructor injection
- [ ] 5. Run ./gradlew classes to generate ApplicationGraph

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1. Build Setup

plugins { id "java"; id "application" }

configurations {
    koraBom
    annotationProcessor.extendsFrom(koraBom)
    implementation.extendsFrom(koraBom)
}

dependencies {
    koraBom platform("ru.tinkoff.kora:kora-parent:1.2.19")
    annotationProcessor "ru.tinkoff.kora:annotation-processors"
    implementation "ru.tinkoff.kora:config-hocon"
    implementation "ru.tinkoff.kora:logging-logback"
}

java { sourceCompatibility = JavaVersion.VERSION_25 }
application { mainClass = "com.example.Application" }

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2. Application Bootstrap

@KoraApp
public interface Application extends HoconConfigModule, LogbackModule {
    static void main(String[] args) {
        KoraApplication.run(ApplicationGraph::graph);
    }
}