'Spring boot APM requiring no code change and docker

I am looking to integrate my Spring Boot Microservice with an open source APM tool. Most of the tools on web are either using Docker or need a code change.

Are there any APM tools that are open source and don't need a code change and preferably don't need docker?

In my metrics I care the most about the time each REST API call takes including a breakdown for internal method calls. If it includes DB or JDBC stats, it will be icing on the cake.



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