Spring boot starter 2.13.0+ causes dependency resolution failure with Java 11

[KimDoubleB]

Describe the bug

When upgrading the opentelemetry-spring-boot-starter dependency to version 2.13.0 or later in a Spring Boot 2.7.x project running on Java 11, the build fails with a dependency resolution error. This issue does not occur in versions prior to 2.13.0 (e.g., 2.12.0).

This issue appears to have been introduced due to the addition of opentelemetry-runtime-telemetry-java17 dependency in spring-boot-autoconfigure.

opentelemetry-java-instrumentation/instrumentation/spring/spring-boot-autoconfigure/build.gradle.kts

Lines 56 to 57 in 9101f03

	implementation(project(":instrumentation:runtime-telemetry:runtime-telemetry-java8:library"))
	implementation(project(":instrumentation:runtime-telemetry:runtime-telemetry-java17:library"))

Since there was no mention in the release notes about not supporting Java versions below 17, I’ve filed this issue to highlight the unexpected behavior.

Steps to reproduce

Ref: https://github.com/KimDoubleB/spring-learning/tree/issue/java11/opentelemetry/issue-demo

• Use java 11, spring boot 2.7.18, opentelemetry-spring-boot-starter 2.13.0
• ./gradlew clean dependencies --configuration runtimeClasspath or ./gradlew build

Expected behavior

The build should complete successfully, resolving all dependencies compatible with Java 11.

Actual behavior

The build fails with the following error:

Execution failed for task ':bootJarMainClassName'.
> Could not resolve all files for configuration ':runtimeClasspath'.
   > Could not resolve io.opentelemetry.instrumentation:opentelemetry-runtime-telemetry-java17:2.13.1-alpha.
     Required by:
         root project : > io.opentelemetry.instrumentation:opentelemetry-spring-boot-starter:2.13.1 > io.opentelemetry.instrumentation:opentelemetry-spring-boot-autoconfigure:2.13.1
      > Dependency resolution is looking for a library compatible with JVM runtime version 11, but 'io.opentelemetry.instrumentation:opentelemetry-runtime-telemetry-java17:2.13.1-alpha' is only compatible with JVM runtime version 17 or newer.

This indicates that the transitive dependency opentelemetry-runtime-telemetry-java17 is specific to Java 17 and incompatible with Java 11.

Javaagent or library instrumentation version

library 2.13.0+

Environment

• Spring Boot Version: 2.7.18
• Java Version: 11
• OpenTelemetry Spring Boot Starter Version: 2.13.0+
• Build Tool: Gradle

Additional context

If this is intended behavior, it would be beneficial to add this information to the release notes or documentation to clarify the Java 17 requirement.

[trask]

cc @jeanbisutti @zeitlinger