Unable to get coverage data when jacoco configured with jetty server

[Harish Gautham]

Hi
 
    Am trying to get  jacoco code coverage for application running on jetty server[Docker Image]

 We have docker container for our application and we pull the image of that application [running using jetty server] ..
Am trying to get the code coverage configured for our application.. however i see the jacoco.exec getting generated with no data in it...

this is how i start the jetty server  with the jacocoagent mentioned in the start command....

/usr/bin/java -server -Xmx256m -javaagent:/opt/jacocoagent.jar=destfile=/opt/jacoco.exec -Djava.security.debug=off -Dipsao.security.jps.config=/opt/ml/config/wallets/sim_jps-config-jse.xml -Dipsao.ml.config=/opt/ml/config/local-harve.config -Dipsao.pid.config=/opt/ml/config/local-harvester.config -DtemplateRecFile=/opt/ml/config/template_re.txt -Djava.util.logging.config.class=ipsao.core.ojdl.logging.LoggingConfiguration -Dipsao.core.ojdl.logging.config.file=log/harve-logging.config -classpath /opt/ml/services/catalog-jetty/lib/Data-jetty-0.1.0-SNAPSHOT-jar-with-dep.jar ipsao.dc.jetty.DCJetty -daemon

i notice that a empty jacoco.exec is getting generated and i do not see any coverage on stoping the server after running some tests...


Thanks
Gautham

[Evgeny Mandrikov]

Hi,

JaCoCo creates an empty file at startup to ensure that location is writable.

And all the information is written at the JMV shutdown using https://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html#addShutdownHook(java.lang.Thread)

So please make sure that you gracefully terminate JVM.

[Harish Gautham]

Hi,

   Thanks a lot .. so i did a graceful terminate of the JVM and got to see the code coverage..

Thanks
Harish