SonarQube not able to read jacoco.exec file - sonarqube

Question

We are using below versions to get JaCoCo Code Coverage report on SonarQube.
SonarQube 5.6.6
JaCoCo 0.7.9
Apache Ant 1.10.1
JUnit 4.12
JMockIt 1.20
We execute Jenkins job nightly to perform code analysis using SonarQube. We execute JUnit cases and gather code coverage of application.
We perform below steps as part of Sonar snapshot execution as part of Ant build.
1) Build the application
2) Execute JUnit Cases
3) Code Coverage
4) Sonar analysis
Now we frequently show failure in Jenkins sonar job due to SonarQube analysis failed and not able to application snapshot on Sonar server. If we execute Ant sonar target manually then we it was successful and snapshot generate without any problem in code coverage.
[sonar:sonar] Sensor SurefireSensor
[sonar:sonar] parsing D:\Projects\Collaborate\Branches\R4_3\deployment\latest
[sonar:sonar] Resource not found: junit.framework.JUnit4TestCaseFacade
[sonar:sonar] Sensor SurefireSensor (done) | time=3343ms
[sonar:sonar] Sensor JaCoCoSensor
[sonar:sonar] Analysing D:\Projects\Collaborate\Branches\R4_3\deployment\latest\jacoco.exec
BUILD FAILED
D:\Projects\Collaborate\Branches\R4_3\deployment\build.xml:2246:
org.sonar.squidbridge.api.AnalysisException: Unable to read
D:\Projects\Collaborate\Branches\R4_3\deployment\latest\jacoco.exec
at org.sonar.plugins.jacoco.JacocoReportReader.readJacocoReport(JacocoReportReader.java:78)
at org.sonar.plugins.jacoco.AbstractAnalyzer.readExecutionData(AbstractAnalyzer.java:140)
at org.sonar.plugins.jacoco.AbstractAnalyzer.analyse(AbstractAnalyzer.java:114)
at org.sonar.plugins.jacoco.JaCoCoSensor.analyse(JaCoCoSensor.java:57)
at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:58)
at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:50)
at org.sonar.batch.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:83)
at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:192)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:241)
at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:236)
at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:226)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.task.ScanTask.execute(ScanTask.java:47)
at org.sonar.batch.task.TaskContainer.doAfterStart(TaskContainer.java:86)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java
Total time: 21 minutes 19 seconds
Following is the Ant "sonar" target configuration.
<target name="sonar" depends="init" xmlns:sonar="antlib:org.sonar.ant">
<taskdef uri="antlib:org.sonar.ant" resource="org/sonar/ant/antlib.xml">
<classpath>
<pathelement path="../../SONARlib/sonarqube-ant-task-2.4.jar" />
</classpath>
</taskdef>
<tstamp>
<format property="sonar_starttime" pattern="dd_MM_yyyy_HH_mm" />
</tstamp>
<echo>Sonar Scan Start Time:${sonar_starttime}</echo>
<property name="sonar.projectBaseDir"
value="<project_dir>" />
<property name="sonar.host.url" value="<sonar_server>" />
<property name="sonar.login"
value="<sonar_token>" />
<property name="sonar.projectKey" value="<project_key>" />
<property name="sonar.projectName" value="<project_name>" />
<property name="sonar.projectVersion" value="(R4_3)_${sonar_starttime}" />
<property name="sonar.analysis.mode" value="publish" />
<property name="sonar.language" value="java" />
<property name="sonar.java.source" value="1.8" />
<property name="sonar.sourceEncoding" value="UTF-8" />
<property name="sonar.sources" value="src/java,src/gradleSource" />
<property name="sonar.inclusions" value="**/*.java" />
<property name="sonar.tests" value="src/tests" />
<property name="sonar.test.inclusions" value="**/*Test.java" />
<property name="sonar.test.exclusions"
value="**/*SuiteTest.java,**/*Expectation.java" />
<property name="sonar.java.binaries" value="${build.root}/${appname}/WEB-
INF/classes" />
<property name="sonar.java.test.binaries"
value="${build.root}/${appname}/WEB-INF/classes" />
<property name="sonar.java.libraries"
value="${env.JAVA_HOME}/jre/lib/*.jar,${build.root}/${appname}/WEB-
INF/lib/*.jar,${tomcat.root}/lib/*.jar,JUnitlib/*.jar,
ANTlib/*.jar,SVNlib/*.jar,JAXBlib/*.jar,../SONARlib/*.jar" />
<property name="sonar.java.test.libraries"
value="${env.JAVA_HOME}/jre/lib/*.jar,${build.root}/${appname}/WEB-
INF/lib/*.jar,${tomcat.root}/lib/*.jar,JUnitlib/*.jar,
ANTlib/*.jar,SVNlib/*.jar,JAXBlib/*.jar,../SONARlib/*.jar" />
<property name="sonar.scm.disabled" value="false" />
<property name="sonar.scm.provider" value="svn" />
<property name="sonar.java.coveragePlugin" value="jacoco" />
<property name="sonar.jacoco.reportPath"
value="${junit.xml.exec.latest.dir}/jacoco.exec" />
<property name="sonar.junit.reportsPath"
value="${junit.xml.exec.latest.dir}" />
<sonar:sonar />
<tstamp>
<format property="sonar_endtime" pattern="dd_MM_yyyy_HH_mm" />
</tstamp>
<echo>Sonar Scan End Time:${sonar_endtime}</echo>
Please let me know if you need further details.
Could you please help why this JaCoCo exception occur while sonar analysis?

Answer 1

In a lot of cases, jacoco.exec is just not uet generated.
So i suggest that you check the reasons of generation fail exp :
Project build failed.
Build not even triggered.