package io.prometheus.client.exemplars.tracer.otel_agent when bumping to latest 3.4.5

[patpatpat123]

Hello team,

This is my first post in this repo.

If not anything else, I just wanted to say thanks for this project.

It is easy to understand and easy to follow.

I wanted to reach out with a small enhancement request or issue, if possible.

I am trying to use exemplar in a Spring Boot micrometer project, with the latest stack (Spring Boot 3.4.5 as of this writing)

Here is part the pom:

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>3.4.5</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>app</artifactId>
	<version>0.0.1</version>
	<name>app</name>
	<description>Demo project for Spring Boot Observability</description>
	<properties>
		<java.version>24</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>

		<dependency>
			<groupId>io.micrometer</groupId>
			<artifactId>micrometer-registry-prometheus</artifactId>
		</dependency>

Please note, I have changed a bit of the dependencies, but not to alter this original pom, but just to put things to the latest (as of spring managed BOM)

From there, I will always get this issue at compile time:

package io.prometheus.client.exemplars.tracer.otel_agent does not exist

Question 1: Could you please bump everything to the latest, managed by Spring BOM instead of some specific versions?

Question 2: Would you know how to resolve this issue?

Thank you for your time reading this, and wishing you a good day!

[blueswen]

Hi @patpatpat123,

Question 1: Could you please bump everything to the latest, managed by Spring BOM instead of some specific versions?

Thanks for the suggestion. I’ve updated all dependencies in the latest commit to be managed by the Spring BOM.

Question 2: Would you know how to resolve this issue?

Micrometer now natively supports exemplars. We just need to add micrometer-tracing-bridge-otel. The custom configuration is not required now.

<dependency>
	<groupId>io.micrometer</groupId>
	<artifactId>micrometer-tracing-bridge-otel</artifactId>
</dependency>