RFR: JDK-8199352: The Jib artifact resolver in test lib needs to print better error messages

[Erik Joelsson]

On 2018-03-08 15:24, Igor Ignatyev wrote:
> Hi Erik,
Thanks for looking at this!
> to avoid incompatibility, you could have just made ArtifactResolverException a subclass of java.io.FileNotFoundException.
This is correct, but I don't think the exception should be of type 
FileNotFoundException. IMO, this is something different and trying to 
re-purpose an existing exception type is rarely a good idea.
> it seems you forgot to add ArtifactResolverException.java file to the repo.
Doh! Added.
> a minor nit: in JibArtifactManager::newInstance, you pass "Could not resolve " + JIB_SERVICE_FACTORY to ClassNotFoundException constructor. by the convention, the message in CNFE is the classname.
Right, good point, fixed.

New Webrev: http://cr.openjdk.java.net/~erikj/8199352/webrev.02/

/Erik
> -- Igor
>
>> On Mar 8, 2018, at 2:08 PM, Erik Joelsson <erik.joelsson at oracle.com> wrote:
>>
>> The Jib artifact resolver is not very good at telling us why things go wrong. The reason is that it swallows exceptions. This patch changes the API from throwing a FileNotFoundException, which I don't really think fits correctly in all cases, to a new API specific exception.
>>
>> I have greped for all uses of this API in the tests and changed the exception type caught at the caller location. I verified that I didn't break anything by compiling all the affected test classes and by running some of them for a bit.
>>
>> With these changes it should be easier to diagnose problems with resolving artifacts in the future.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8199352
>>
>> Webrev: http://cr.openjdk.java.net/~erikj/8199352/webrev.01/index.html
>>
>> /Erik
>>