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verticle-io/apex

http://toolkits.verticle.io - APEX JVM data extraction toolkit

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Jens Saade

@jenssaade

creating that is quite some days ago, but now I remembered ;)

you might want to change /go/src/app/apexbeat.yml though, I see it points to "elasticsearch:9200"

used that within a docker-compose scenario I guess

netics-w

@netics-w

Yes, that works. Thanks!

Jens Saade

@jenssaade

perfect ;)

heguanglong01

@heguanglong01

Hi,Jens When the Java -javaagent:apexAgent-v0.7.1-all.jar=myApexAgentConfig.properties is executed, the startup is successful and the error is not reported.
But without executing the Minimal.groovy script, I want to know the reason why I didn't execute Minimal.groovy script, where com.foo.Bar was created, and the console didn't output.

<apex> trying to weave...

<apex> weaving method...

<apex> successfully weaved method...
Foo? Bar!

Jens Saade

@jenssaade

Not sure if I understand correctly. Could you rephrase your problem?

heguanglong01

@heguanglong01

Hi,Jens,When the Java -javaagent:apexAgent-0.7-all.jar=myApexAgentConfig.properties -jar agent.jar is started, the console outputs the following error:
23:10:45.543 [main] INFO i.v.a.a.i.AgentClassFileTransformer - <apex> trying to weave com.foo.Bar
23:10:45.643 [main] ERROR i.v.a.a.i.AgentClassFileTransformer - <apex> Cannot find classes for signature [float]
Java.lang.ClassNotFoundException: float
At java.net.URLClassLoader.findClass (URLClassLoader.java:381) ~[na:1.8.0_151]
At java.lang.ClassLoader.loadClass (ClassLoader.java:424) ~[na:1.8.0_151]
At sun.misc.Launcher$AppClassLoader.loadClass (Launcher.java:335) ~[na:1.8.0_151]
At java.lang.ClassLoader.loadClass (ClassLoader.java:357) ~[na:1.8.0_151]
At java.lang.Class.forName0 (Native Method) ~[na:1.8.0_151]
At java.lang.Class.forName (Class.java:348) ~[na:1.8.0_151]
At io.verticle.apex.agent.instrument.AgentClassFileTransformer.getClass (AgentClassFileTransformer.java:154) ~[apexAgent-0.7-all.jar:0.7]
At io.verticle.apex.agent.instrument.AgentClassFileTransformer.lambda$transform$4 (AgentClassFileTransformer.java:70) ~[apexAgent-0.7-all.jar:0.7]
At java.util.ArrayList.forEach (ArrayList.java:1255) ~[na:1.8.0_151]
At io.verticle.apex.agent.instrument.AgentClassFileTransformer.transform (AgentClassFileTransformer.java:65) ~[apexAgent-0.7-all.jar:0.7]
At sun.instrument.TransformerManager.transform (TransformerManager.java:188) ~[na:1.8.0_151]
At sun.instrument.InstrumentationImpl.transform (InstrumentationImpl.java:428) ~[na:1.8.0_151]
At java.lang.ClassLoader.defineClass1 (Native Method) ~[na:1.8.0_151]
At java.lang.ClassLoader.defineClass (ClassLoader.java:763) ~[na:1.8.0_151]
At java.security.SecureClassLoader.defineClass (SecureClassLoader.java:142) ~[na:1.8.0_151]
At java.net.URLClassLoader.defineClass (URLClassLoader.java:467) ~[na:1.8.0_151]
At java.net.URLClassLoader.access$100 (URLClassLoader.java:73) ~[na:1.8.0_151]
At java.net.URLClassLoader$1.run (URLClassLoader.java:368) ~[na:1.8.0_151]
At java.net.URLClassLoader$1.run (URLClassLoader.java:362) ~[na:1.8.0_151]
At java.security.AccessController.doPrivileged (Native Method) ~[na:1.8.0_151]
At java.net.URLClassLoader.findClass (URLClassLoader.java:361) ~[na:1.8.0_151]
At java.lang.ClassLoader.loadClass (ClassLoader.java:424) ~[na:1.8.0_151]
At sun.misc.Launcher$AppClassLoader.loadClass (Launcher.java:335) ~[na:1.8.0_151]
At java.lang.ClassLoader.loadClass (ClassLoader.java:357) ~[na:1.8.0_151]
At sun.launcher.LauncherHelper.checkAndLoadMain (LauncherHelper.java:495) ~[na:1.8.0_151]

Jens Saade

@jenssaade

Ok, so the agent is unable to match that class/method with that signature

Is that class com.foo.Bar on your classpath?

float might also be the problem try to use java.lang.Float instead when matching the signature

Jens Saade

@jenssaade

apex is using javassist underneath: https://jboss-javassist.github.io/javassist/tutorial/tutorial2.html

I guess that is what causes your problem.

And I definitely should update the docs: http://toolkits.verticle.io/docs/index.html#configure-instrumentation ;)

still some TODOs in there ...

@heguanglong01 please let me know if your problem is solved.

heguanglong01

@heguanglong01

@jenssaade Thank you. According to your method, the parameter replacement (float-->java.lang.Float) is solved. But a new problem :

heguanglong01

@heguanglong01

@jenssaade Upgrade the apexAgent-0.7-all.jar to the apexAgent-v0.7.1-all.jar problem solution. But apex-service-template accepts information that does not get to the application.com.foo.Bar call.

Jens Saade

@jenssaade

@heguanglong01 could you please share your code (e.g. https://gist.github.com/) so I can have a look?

Or create a temporary sample project on github

heguanglong01

@heguanglong01

@jenssaade Thank you very much for the help. The problem has been solved！

Jens Saade

@jenssaade

Great! Thats good news 😊