Leiningen java-agents不在uberjar工作

Question

In my Leiningen project I have the following config:

:java-agents [[com.newrelic.agent.java/newrelic-agent "3.19.2"]]

When running my app as in lein repl the agent is being run, but when I create the uberjar and run it like:

java -jar target/proclodo-spa-server-rendering.jar

the agent is not started. I could include newrelic-agent.jar in my uberjar and pass the -javaagent argument, but I'm trying to avoid having big binary blobs in my repository that will not be upgraded automatically (why does New Relic even recommend that?). I tried adding:

:bootclasspath true

due to this comment:

;; Java agents can instrument and intercept certain VM features. Include
;; :bootclasspath true to place the agent jar on the bootstrap classpath.

but it made no difference. How is the agent jar supposed to be placed in the CLASSPATH so I can verify it's working?

I am using Jetty, which is said to interfere with bootclasspath , but I'm not sure how it should be interfering. Everything seems to run fine, it's only the agent that's not starting.

Answer 1

If you run java yourself, you have to pass the VM options, such as the debugging agent to use, yourself. lein can't package that into a jar: there is simply no mechanism for doing it.