Jacoco Report generation from jacoco.exec

[Sabyasachi Mishra]

Hello team,

I am trying to compute code coverage for a build hosted in tomcat. I have attached Jacoco agent to tomcat using Java agent. Now I am able to get Jacoco.exec file and class dumps. Currently I don't have access to source code files.

As  per as my understanding we can do the analysis only by using *.class files and Jacoco.exec files. I have tried the below options but still not able to generate the html report.

java -jar /opt/jacoco/lib/jacococli.jar report /opt/jacoco/Result/jacoco.exec --classfiles /opt/jacoco/Result/classes --html /opt/jacoco/Result/jacoco-report --name jackRpt - This is thrrowing me an exception

I have also tried import the jacoco.exec file and analysed against the class dump files. But I am getting error code of 5001. 

Can anyone please tell me what I am missing or what I am doing wrong.

Thanks in advance.

Regards,

Sabyasachi Mishra 

[Marc Hoffmann]

Can you please provide the full exception stack trace thrown from the command line tool?

Regards,
-marc

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[Sabyasachi Mishra]

Below is the exception I am getting

[INFO] Loading execution data file /opt/jacoco/Result/jacoco.exec.

Exception in thread "main" java.io.IOException: Error while analyzing /opt/jacoco/Result/classes/com/fasterxml/jackson/annotation/JsonFormat$Shape.4e5c4d9a972b70b0.class.

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzerError(Analyzer.java:157)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeClass(Analyzer.java:129)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeClass(Analyzer.java:152)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:188)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:221)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:216)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:216)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:216)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:216)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeAll(Analyzer.java:216)

       at org.jacoco.cli.internal.commands.Report.analyze(Report.java:109)

       at org.jacoco.cli.internal.commands.Report.execute(Report.java:83)

       at org.jacoco.cli.internal.Main.execute(Main.java:89)

       at org.jacoco.cli.internal.Main.main(Main.java:104)

Caused by: java.lang.IllegalStateException: Can't add different class with same name: com/fasterxml/jackson/annotation/JsonFormat$Shape

       at org.jacoco.cli.internal.core.analysis.CoverageBuilder.visitCoverage(CoverageBuilder.java:107)

       at org.jacoco.cli.internal.core.analysis.Analyzer$1.visitEnd(Analyzer.java:96)

       at org.jacoco.cli.internal.asm.ClassVisitor.visitEnd(ClassVisitor.java:339)

       at org.jacoco.cli.internal.core.internal.flow.ClassProbesAdapter.visitEnd(ClassProbesAdapter.java:98)

       at org.jacoco.cli.internal.asm.ClassReader.accept(ClassReader.java:702)

       at org.jacoco.cli.internal.asm.ClassReader.accept(ClassReader.java:500)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeClass(Analyzer.java:111)

       at org.jacoco.cli.internal.core.analysis.Analyzer.analyzeClass(Analyzer.java:127)

       ... 12 more

[Marc Hoffmann]

The exception message says: "Can't add different class with same name: com/fasterxml/jackson/annotation/JsonFormat$Shape"

Please see FAQ: http://www.jacoco.org/jacoco/trunk/doc/faq.html

Why do I get the error "Can't add different class with same name"?

For coverage report generation all classes within a group must have unique names. You get this error during report generation if JaCoCo is supplied with multiple different class files with the same name. To fix this remove those duplicate classes or create separate reports or report groups for each version.

Note that it is not possible to create groups with the command line tool. You need to decide which version of the class you want to create a coverage report for.

Regards,
-marc

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