how does jacoco agent save coverage information in testing remote service

[Aaron zhang]

hi :

Thanks in advance!

We use tcp mode to get coverage from remote service with jacoco agent. we find that coverage will be empty by re-deploy server. 

      

     How do we save each of coverages and but don't empty it, then merge coverage from previous coverage to current result?

     In additionally, how does jacoco agent save coverage in remote server? in memory or file? if file, where is location?

BR,

Aaron

[Marc Hoffmann]

Hi Aaron,

JaCoCo agent holds coverage information in-memory. Therefore if you stop the JVM without dumping the data it will be lost.

In you’re case you need to collect coverage data over tcp before you re-deploy.

Regards,

-marc

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[Aaron zhang]

hi marc,

We use tcp mode to get coverage by socket with jacoco agent, and save jacoco.exec file in local

Do you know what API can merge multiple jacoco.exec files? I think that we can save every jacoco.exec files of deployed service.

If exist the API, we will do it very simple.

在 2019年12月11日星期三 UTC+8下午12:28:52，Marc R. Hoffmann写道：

Hi Aaron,

JaCoCo agent holds coverage information in-memory. Therefore if you stop the JVM without dumping the data it will be lost.

In you’re case you need to collect coverage data over tcp before you re-deploy.

Regards,

-marc

On 11. Dec 2019, at 05:24, Aaron zhang <aaron_z...@msn.com> wrote:

hi :

Thanks in advance!

We use tcp mode to get coverage from remote service with jacoco agent. we find that coverage will be empty by re-deploy server. 

      

     How do we save each of coverages and but don't empty it, then merge coverage from previous coverage to current result?

     In additionally, how does jacoco agent save coverage in remote server? in memory or file? if file, where is location?

BR,

Aaron

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[Aaron zhang]

thanks! 

BR,

Aaron

在 2019年12月11日星期三 UTC+8下午5:16:34，Aaron zhang写道：

[Marc Hoffmann]

Hi Aaron,

for example the JaCoCo CLI allows merging of multiple exec files:

https://www.jacoco.org/jacoco/trunk/doc/cli.html

If you want to implement it in Java ExecFileLoader is the API you’re looking for. The CLI implementation might serve as an example:

https://github.com/jacoco/jacoco/blob/master/org.jacoco.cli/src/org/jacoco/cli/internal/commands/Merge.java

Regards,

-marc

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[Aaron zhang]

Thanks！

在 2019年12月11日星期三 UTC+8下午5:38:50，Marc R. Hoffmann写道：

To view this discussion on the web visit https://groups.google.com/d/msgid/jacoco/71206b87-af5d-46ca-807c-13c347b987be%40googlegroups.com.