Jacoco fails in Jenkins

[Daniel Watrous]

I have tried to introduce jacoco into my build pipeline, but it fails and I can't find anything online to help me understand why. The plugin itself appears to work, but they it complains that it can't access the files. Here's a snippet of the error stacktrace.

[Pipeline] { (Code coverage (jacoco))
[Pipeline] jacoco
[JaCoCo plugin] Collecting JaCoCo coverage data...
[JaCoCo plugin] **/target/**.exec;**/classes;**/src/main/java; locations are configured
[JaCoCo plugin] Number of found exec files for pattern **/target/**.exec: 1
[JaCoCo plugin] Saving matched execfiles:  /home/jenkins/workspace/elopment_automation_jenkins-DUMUCGCV43HJK2LF4OUPIWNQHCBBPCZUYH3HIEXOZKSSQM4BXWQA/target/jacoco.exec
[JaCoCo plugin] Saving matched class directories for class-pattern: **/classes: 
[JaCoCo plugin]  - /home/jenkins/workspace/elopment_automation_jenkins-DUMUCGCV43HJK2LF4OUPIWNQHCBBPCZUYH3HIEXOZKSSQM4BXWQA/target/api-termination/WEB-INF/classes 130 files[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // podTemplate
[Pipeline] End of Pipeline
java.nio.file.AccessDeniedException: /var/jenkins_home/jobs/api-termination/jobs/api-termination-automation-development/branches/automation-jenkins.4nehn8/builds/42/jacoco/classes/com/company/common/AuditActn.class
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:434)
	at java.nio.file.Files.newOutputStream(Files.java:216)
	at hudson.util.IOUtils.copy(IOUtils.java:39)
	at hudson.FilePath.readFromTar(FilePath.java:2307)
Also:   	Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection from 10.233.69.140/10.233.69.140:39734
			at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1693)
			at hudson.remoting.UserResponse.retrieve(UserRequest.java:310)
			at hudson.remoting.Channel$2.adapt(Channel.java:944)

The AccessDeniedException is for a directory that doesn't exist: /var/jenkins_home... I'm not sure if the jacoco plugin is trying to create that directory or if something else is suggesting that is a valid directory.

Any ideas to get this build working?

[Daniel Watrous]

I explicitly added the path to the compiled classes and the plugin now works. The incorrect path may be a default path in the plugin that it used when I didn't explicitly provide one.

[Marc Hoffmann]

Hi Daniel,

the Jenkins plug-in is not maintained by us. please have a look at the project site to find their mailing list: https://plugins.jenkins.io/jacoco

Thanks for your understanding,
-marc

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