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From Wido den Hollander <>
Subject Re: [DISCUSS] Moving to Java 8
Date Wed, 22 Apr 2015 12:43:12 GMT
Hash: SHA1

On 04/22/2015 02:13 PM, Wilder Rodrigues wrote:
> Hi Wido,
> Thanks for the reply and making a good point concerning Ubuntu
> 14.04.
> Besides the difficulty in writing testes without increasing even
> more out technical dept, another point on the Java 8 platform is
> the EOL (end of this month) of Java 1.7.

Yes, I'm aware of that. So that makes this situation difficult.

There is a bug open for backporting OpenJDK 8 to Ubuntu 14.04:

More votes there would really help.

> For now I created a ticket on Apache Jira to keep track of it:
> Could you
> please have a look and let me know if the content of the ticket is
> appropriate?
> We will start a new sprint in 1 week and will take some time to
> discuss what to do and when. Will keep the community updated on
> that matter.
> Thanks a gain.
> Cheers, Wilder
> On 21 Apr 2015, at 15:49, Wido den Hollander
> <<>> wrote:
> On 04/21/2015 03:27 PM, Wilder Rodrigues wrote: Hi all,
> Yesterday I started working on the LibvirtComputingResource class 
> in order to apply the same patterns I used in the 
> CitrixResourceBase + add more unit tests to it After 10 hours of 
> work I got a bit stuck with the 1st test, which would cover the 
> refactored LibvirtStopCommandWrapper. Why did I get stuck? The 
> class used a few static methods that call native libraries, which
> I would like to mock. However, when writing the tests I faced 
> problems with the current Mockito/PowerMock we are using: they are 
> simply not enough for the task.
> What did I do then? I added a dependency to EasyMock and 
> PowerMock-EasyMock API. It worked almost fine, but I had to add a 
> “-noverify” to both my Eclipse Runtime configuration and also to 
> the cloud-plugin-hypervisor-kvm/pom.xml file. I agree that’s not 
> nice, but was my first attempt of getting it to work. After trying 
> to first full build I faced more problems related to 
> ClassDefNotFoundExpcetion which were complaining about Mockito 
> classes. I then found out that adding the PowerMockRunner to all 
> the tests classes was going to be a heavy burden and would also 
> mess up future changes (e.g. the -noverify flag was removed from 
> Java 8, thus adding it now would be a problem soon).
> Now that the first 2 paragraphs explain a bit about the problem, 
> let’s get to the solution: Java 8
> The VerifyError that I was getting was due to the use of the
> latest EasyMock  release (3.3.1). I tried to downgrade it to
> 3.1/3.2 but it also did not work. My decision: do not refactor if
> the proper tests cannot be added. This left me with one action:
> migrate to Java 8.
> There were mentions about Java 8 in february[1] and now I will put 
> some energy in making it happen.
> What is your opinion on it?
> I'm not against it technically, but practically I am.
> Ubuntu 14.04 does not ship a Java 8 JRE in the repositories.
> CentOS 7 has java-1.8.0-openjdk.x86_64 available, so it would work 
> there. But Ubuntu is also widely used with CloudStack, so those
> users couldn't use CloudStack without any additional repositories.
> Since that isn't easy I would vote -1 on this if it came that far.
> Wido
> Thanks in advance.
> Cheers, Wilder
> box/cloudstack-dev/201502.mbox/<<mailto:>>>
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