Ktor 3 Sentry OpenTelemetry Agentless ClassNotFoundException

[Ynnck123]

Environment

SaaS (https://sentry.io/)

Steps to Reproduce

Potentially relevant used plugin versions:

Ktor Server version 3.1.2
Kotlin 2.1.20
Sentry jvm gradle plugin 5.3.0

I added the following to my dependencies { .. } block in my build.gradle.kts

    implementation(platform("io.sentry:sentry-bom:8.8.0"))
    implementation("io.sentry:sentry")
    implementation("io.sentry:sentry-opentelemetry-agentless")

    implementation("io.opentelemetry.instrumentation:opentelemetry-ktor-3.0:2.15.0-alpha")

I start sentry in my Ktor application and then configure the ktor 3 plugin in the following way:

fun Application.configureMonitoring() {

        install(KtorServerTelemetry) {
            val openTelemetry = createOpenTelemetry()
            setOpenTelemetry(openTelemetry)

            attributesExtractor {
                onStart {
                    attributes.put("start-time", Clock.System.now().toEpochMilliseconds())
                }
                onEnd {
                    attributes.put("end-time", Clock.System.now().toEpochMilliseconds())
                }
            }
        }
}

private fun createOpenTelemetry(): OpenTelemetry =
    AutoConfiguredOpenTelemetrySdk.builder().addResourceCustomizer { oldResource, _ ->
        oldResource.toBuilder()
            .putAll(oldResource.attributes)
            .put(ServiceAttributes.SERVICE_NAME, "my-app-backend")
            .build()
    }
        .build()
        .openTelemetrySdk

This was what I came up with based on this Ktor opentelemetry example and the Sentry Agentless Opentelemetry docs.

Expected Result

The app starts and reports the traces to Sentry cloud.

Actual Result

My application doesn't come up, I see the following crash in my logs:

java.lang.ClassNotFoundException: io.opentelemetry.api.incubator.events.EventLoggerProvider
at jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.builder(AutoConfiguredOpenTelemetrySdk.java:44)
at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.initialize(AutoConfiguredOpenTelemetrySdk.java:36)
at myktorapp.com.plugins.MonitoringKt.configureMonitoring$lambda$3(Monitoring.kt:28)
at io.ktor.server.application.CreatePluginUtilsKt.createRouteScopedPluginInstance(CreatePluginUtils.kt:277)
at io.ktor.server.application.CreatePluginUtilsKt.access$createRouteScopedPluginInstance(CreatePluginUtils.kt:1)
at io.ktor.server.application.RouteScopedPluginImpl.install(CreatePluginUtils.kt:182)
at io.ktor.server.application.RouteScopedPluginImpl.install(CreatePluginUtils.kt:164)
at io.ktor.server.application.ApplicationPluginKt.install(ApplicationPlugin.kt:121)
at myktorapp.com.plugins.MonitoringKt.configureMonitoring(Monitoring.kt:26)
at myktorapp.com.ApplicationKt.module(Application.kt:51)
        at myktorapp.com.ApplicationKt.module$default(Application.kt:43)
        at myktorapp.com.ApplicationKt.initialize(Application.kt:30)
        at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.lang.reflect.Method.invoke(Method.java:578)
        at kotlin.reflect.jvm.internal.calls.CallerImpl$Method.callMethod(CallerImpl.kt:97)
        at kotlin.reflect.jvm.internal.calls.CallerImpl$Method$Static.call(CallerImpl.kt:106)
        at kotlin.reflect.jvm.internal.KCallableImpl.callDefaultMethod$kotlin_reflection(KCallableImpl.kt:207)
        at kotlin.reflect.jvm.internal.KCallableImpl.callBy(KCallableImpl.kt:112)
        at io.ktor.server.engine.internal.CallableUtilsKt.callFunctionWithInjection(CallableUtils.kt:127)
        at io.ktor.server.engine.internal.CallableUtilsKt.executeModuleFunction(CallableUtils.kt:40)
        at io.ktor.server.engine.EmbeddedServer.launchModuleByName$lambda$32(EmbeddedServerJvm.kt:422)
        at io.ktor.server.engine.EmbeddedServer.avoidingDoubleStartupFor(EmbeddedServerJvm.kt:446)
        at io.ktor.server.engine.EmbeddedServer.launchModuleByName(EmbeddedServerJvm.kt:421)
        at io.ktor.server.engine.EmbeddedServer.dynamicModule$lambda$26(EmbeddedServerJvm.kt:381)
        at io.ktor.server.engine.EmbeddedServer.instantiateAndConfigureApplication$lambda$25(EmbeddedServerJvm.kt:371)
        at io.ktor.server.engine.EmbeddedServer.avoidingDoubleStartup(EmbeddedServerJvm.kt:428)
        at io.ktor.server.engine.EmbeddedServer.instantiateAndConfigureApplication(EmbeddedServerJvm.kt:370)
        at io.ktor.server.engine.EmbeddedServer.createApplication(EmbeddedServerJvm.kt:171)
        at io.ktor.server.engine.EmbeddedServer.start(EmbeddedServerJvm.kt:301)
        at io.ktor.server.netty.EngineMain.main(EngineMain.kt:25)
        at myktorapp.com.ApplicationKt.main(Application.kt:17)
        java.lang.NoClassDefFoundError: io/opentelemetry/api/incubator/events/EventLoggerProvider
        at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.builder(AutoConfiguredOpenTelemetrySdk.java:44)
        at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.initialize(AutoConfiguredOpenTelemetrySdk.java:36)
        at myktorapp.com.plugins.MonitoringKt.configureMonitoring$lambda$3(Monitoring.kt:28)
        at io.ktor.server.application.CreatePluginUtilsKt.createRouteScopedPluginInstance(CreatePluginUtils.kt:277)
        at io.ktor.server.application.CreatePluginUtilsKt.access$createRouteScopedPluginInstance(CreatePluginUtils.kt:1)
        at io.ktor.server.application.RouteScopedPluginImpl.install(CreatePluginUtils.kt:182)
        at io.ktor.server.application.RouteScopedPluginImpl.install(CreatePluginUtils.kt:164)
        at io.ktor.server.application.ApplicationPluginKt.install(ApplicationPlugin.kt:121)
        at myktorapp.com.plugins.MonitoringKt.configureMonitoring(Monitoring.kt:26)
        at myktorapp.com.ApplicationKt.module(Application.kt:51)
        at myktorapp.com.ApplicationKt.module$default(Application.kt:43)
        at myktorapp.com.ApplicationKt.initialize(Application.kt:30)
        at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.lang.reflect.Method.invoke(Method.java:578)
        at kotlin.reflect.jvm.internal.calls.CallerImpl$Method.callMethod(CallerImpl.kt:97)
        at kotlin.reflect.jvm.internal.calls.CallerImpl$Method$Static.call(CallerImpl.kt:106)
        at kotlin.reflect.jvm.internal.KCallableImpl.callDefaultMethod$kotlin_reflection(KCallableImpl.kt:207)
        at kotlin.reflect.jvm.internal.KCallableImpl.callBy(KCallableImpl.kt:112)
        at io.ktor.server.engine.internal.CallableUtilsKt.callFunctionWithInjection(CallableUtils.kt:127)
        at io.ktor.server.engine.internal.CallableUtilsKt.executeModuleFunction(CallableUtils.kt:40)
        at io.ktor.server.engine.EmbeddedServer.launchModuleByName$lambda$32(EmbeddedServerJvm.kt:422)
        at io.ktor.server.engine.EmbeddedServer.avoidingDoubleStartupFor(EmbeddedServerJvm.kt:446)
        at io.ktor.server.engine.EmbeddedServer.launchModuleByName(EmbeddedServerJvm.kt:421)
        at io.ktor.server.engine.EmbeddedServer.dynamicModule$lambda$26(EmbeddedServerJvm.kt:381)
        at io.ktor.server.engine.EmbeddedServer.instantiateAndConfigureApplication$lambda$25(EmbeddedServerJvm.kt:371)
        at io.ktor.server.engine.EmbeddedServer.avoidingDoubleStartup(EmbeddedServerJvm.kt:428)
        at io.ktor.server.engine.EmbeddedServer.instantiateAndConfigureApplication(EmbeddedServerJvm.kt:370)
        at io.ktor.server.engine.EmbeddedServer.createApplication(EmbeddedServerJvm.kt:171)
        at io.ktor.server.engine.EmbeddedServer.start(EmbeddedServerJvm.kt:301)
        at io.ktor.server.netty.EngineMain.main(EngineMain.kt:25)
        at myktorapp.com.ApplicationKt.main(Application.kt:17)

Product Area

Performance

Link

No response

DSN

No response

Version

No response

[getsantry]

Assigning to @getsentry/support for routing ⏲️

[Ynnck123]

An addition, the issue seems to be based on the Ktor-3 OTel plugin io.opentelemetry.instrumentation:opentelemetry-ktor-3 which seems to introduce an version inconsistency in combination with the setup mentioned.

[adinauer]

Hello @Ynnck123 can you please retry with implementation("io.opentelemetry.instrumentation:opentelemetry-ktor-3.0:2.10.0-alpha")?

If you need 2.15.0 then we'd have to bump the OpenTelemetry version that Sentry uses.