Computing Portfolio fails due to Pitest plugin

[johankees]

Hi,

With SonarQube v6.7 we see issues with computing portfolios when the pitest plugin is installed. The background task fails with the following error:
org.sonar.server.computation.task.projectanalysis.component.VisitException: Visit of Component {key=KEY_NAME,type=VIEW} failed
.....
Caused by: java.lang.IllegalStateException: Value can not be converted to int because current value type is a DOUBLE
at org.sonar.server.computation.task.projectanalysis.api.measurecomputer.MeasureImpl.checkValueType(MeasureImpl.java:80)
at org.sonar.server.computation.task.projectanalysis.api.measurecomputer.MeasureImpl.getIntValue(MeasureImpl.java:50)
at org.sonar.plugins.pitest.PitestComputer.compute(PitestComputer.java:79)
at org.sonar.plugins.pitest.PitestComputer.compute(PitestComputer.java:57)

Odd thing is that this happens for nested portfolios, but not for single portfolios. For example, this will work file
PortfolioA

• projectA1
• projectA2

But this fails
Portfolio1 <-- Fails here

• PortfolioA <-- No issues here
  • projectA1
  • projectA2
• PortfolioB <-- No issues here
  • projectB1
  • projectB2

Here portfolio A and the configured projects are the same in both cases. It will fail on the top level portfolio btw (Portfolio1).

[johankees]

As per SonarSource support:
Alexandre GigleuxToday 4:11 PM
I looked at the code of the Pitest Plugin. At some point it is doing the sum (https://github.com/VinodAnandan/sonar-pitest/blob/master/src/main/java/org/sonar/plugins/pitest/PitestComputer.java#L79) of some metrics (https://github.com/VinodAnandan/sonar-pitest/blob/master/src/main/java/org/sonar/plugins/pitest/PitestComputer.java#L37).
To run this code, the metric must be declared with the Metric.ValueType.INT type.
According to me, the problem is coming from this line: https://github.com/VinodAnandan/sonar-pitest/blob/master/src/main/java/org/sonar/plugins/pitest/PitestComputer.java#L43
The metric MUTATIONS_DATA_KEY is declared as Metric.ValueType.DATA, so there is no way to convert it to an Int to run the sum.
I let you see that with the maintainer of the plugin by raising an Issue here: https://github.com/VinodAnandan/sonar-pitest/issues
Regards

[johankees]

Since the error is about expecting an int and getting a double, my guess would be that the issue is with MUTATIONS_KILLED_RATIO / MUTATIONS_KILLED_PERCENT_KEY, since Metric.ValueType.PERCENT is of type Double

[bradflood]

@johankees I will fix this when I return from vacation next week.

[johankees]

Thanks @bradflood
FYI, I checked this a bit more and added some logging to find out where it breaks. I got the following in the logs:
2018.01.03 14:13:59 ERROR ce[AWC8Xwyl3Nc2CAfF_Hx3][o.s.p.p.PitestComputer] Failed to compute value for pitest_mutations_killed_percent.

For now I've "fixed" this by surrounding "sum += m.getIntValue();" with a try/catch clause, which allowed me to log the above statement.

Hope this helps... Thanks!

[bradflood]

@johankees great! it looks as if you have a handle on what needs to be fixed, and have built the code. If you want to attempt a fix, that would be great. Send a pull request and we can review it together.

[bradflood]

PR 26 submitted and merged to catch IllegalStateException when metric is of type Double (as is the case when the metric is killed percent). This issue is kept open until a more general solution is in place. Specifically, we cannot assume that all metrics in the list are integers; when a Portfolio is being computed, a percentage killed will have been calculated and added to the list. Need a deeper understanding that is reflected in PitestComputer and corresponding test.