Configuring JVM with javaagent

[sneha agarwal]

Hello guys,

Can someone guide me as to what is the step by step process to configure the javaagent with the JVM. I am struggling with this from last 2 days and now am at my wits end.

Also, currently I have put JaCoCo as a plugin in my pom.xml. Do I need to download the Jacoco jar files separately to configure.

Regards 

[Marc R. Hoffmann]

Hi,

did you notice that JaCoCo comes with documentation?

http://www.eclemma.org/jacoco/trunk/doc/

Maybe you start with the working Maven example which is included:

http://www.eclemma.org/jacoco/trunk/doc/examples/build/pom.xml

Regards,
-marc

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[sneh...@gmail.com]

Hi Marc,
Thank you for the quick response.
I did go through the doc and have created a pom which works fine for me but only for the local tests and not the source files which I am running in a different instance of tomcat.Can i do code coverage of the source files from the pom of my tests?
Details of the pom
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.1.201405082137</version>
<configuration>
<append>true</append>

<destFile>${project.build.directory}/coverage/jacoco.exec</destFile>
<dataFile>${project.build.directory}/coverage/jacoco.exec</dataFile>
<!-- <tcpclient>127.0.0.1</tcpclient> <port>8080</port> -->

<outputDirectory>${project.build.directory}/coverage-reports/</outputDirectory>
<classDumpDir>${project.build.directory}/coverage-reports/</classDumpDir>
<excludes />
<skip>false</skip>
<includes>
<include>com/**</include>
</includes>
<!--<propertyName>surefireArgLine</propertyName>-->
<propertyName>jacoco.agent.argLine</propertyName>
</configuration>
<executions><!-- Prepares the property pointing to the JaCoCo runtime
agent which is passed as VM argument when Maven the Surefire plugin is executed. -->
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
<execution>
<id>default-check</id>
<goals>
<goal>check</goal>
</goals>
<configuration>
<rules>
<rule>
<element>BUNDLE</element>
<limits>
<limit>
<counter>INSTRUCTION</counter>
<value>COVEREDRATIO</value>
<minimum>0.60</minimum>
</limit>
<!-- <limit> <counter>LINE</counter> <value>COVEREDRATIO</value>
<minimum>0.60</minimum> </limit> -->
<limit>
<counter>BRANCH</counter>
<value>COVEREDRATIO</value>
<minimum>0.60</minimum>
</limit>
<limit>
<counter>COMPLEXITY</counter>
<value>COVEREDRATIO</value>
<minimum>0.60</minimum>
</limit>
<limit>
<counter>METHOD</counter>
<value>COVEREDRATIO</value>
<minimum>0.60</minimum>
</limit>
<limit>
<counter>CLASS</counter>
<value>MISSEDCOUNT</value>
<maximum>0</maximum>
</limit>
</limits>

</rule>

<rule>
<element>CLASS</element>
<!-- <excludes> <exclude>*Test</exclude> </excludes> -->
<limits>
<limit>
<counter>LINE</counter>
<value>COVEREDRATIO</value>
<minimum>0.50</minimum>
</limit>
</limits>
</rule>
</rules>
<!-- <target>
<report>
<executiondata>
<fileset dir="${project.build.directory}">
<include name="jacoco.exec" />
</fileset>

</executiondata>
</report>
</target> -->

</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<argLine>${jacoco.agent.argLine}</argLine>
<!-- <fork>true</fork> <forkmode>once</forkmode> -->

<execution>
<id>default-test</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
</execution>

[Marc R. Hoffmann]

In this case you need to configure the JaCoCo agent for the tomcat
instance -- depends on how you launch it. Here you find general
information about the JaCoCo agent:

http://www.eclemma.org/jacoco/trunk/doc/agent.html

Regards,
-marc

[sneha agarwal]

Thank u Marc for all your help.
I was able to figure it out

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