kora-telemetry-metrics

Kora Telemetry Metrics

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.

Kora collects metrics with Micrometer. Adding MetricsModule registers a PrometheusMeterRegistry, instruments every Kora module (HTTP, gRPC, JDBC, Kafka, cache, JVM), and publishes a MeterRegistry component you inject to record custom business metrics. Metrics are served in Prometheus text format on the private HTTP port — never the public one.

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Quick Start

1. Add the dependency

The micrometer-module already brings the PrometheusMeterRegistry; no separate registry artifact is needed. All ru.tinkoff.kora:* versions come from the kora-parent BOM — never pin them individually.

===! ":fontawesome-brands-java: Java"

```groovy
dependencies {
    koraBom platform("ru.tinkoff.kora:kora-parent:1.2.19")
    annotationProcessor "ru.tinkoff.kora:annotation-processors"

    implementation "ru.tinkoff.kora:micrometer-module"
    implementation "ru.tinkoff.kora:http-server-undertow"
    implementation "ru.tinkoff.kora:config-hocon"
    implementation "ru.tinkoff.kora:logging-logback"
}
```

=== ":simple-kotlin: Kotlin"

```kotlin
dependencies {
    koraBom(platform("ru.tinkoff.kora:kora-parent:1.2.19"))
    ksp("ru.tinkoff.kora:symbol-processors")

    implementation("ru.tinkoff.kora:micrometer-module")
    implementation("ru.tinkoff.kora:http-server-undertow")
    implementation("ru.tinkoff.kora:config-hocon")
    implementation("ru.tinkoff.kora:logging-logback")
}
```

2. Add MetricsModule to the graph

===! ":fontawesome-brands-java: Java"