RFR 8168925: MODULES property should be topologically ordered and space-separated list

[Sundararajan Athijegannathan]

Hi,

Please review the updated webrev: 
http://cr.openjdk.java.net/~sundar/8168925/webrev.02/

Changes from the last review:

* Moved all release file property filling code from 
DefaultImageBuilder.java to ReleaseInfoPlugin.java
* DefaultImageBuilder populates this.targetOsName directly from 
java.base module
* Added a comment for CATEGORIES_ORDER in ImagePluginConfiguration.java
* In test ModuleNamesOrderTest.java, changed moduleName to be output dir 
name ("image..." name)

Thanks,
-Sundar

On 10/12/16, 11:27 AM, Mandy Chung wrote:
>> On Dec 9, 2016, at 7:32 PM, Sundararajan Athijegannathan<sundararajan.athijegannathan at oracle.com>  wrote:
>>
>> Hi,
>>
>> Thanks for your review. Comments below..
>>
>> On 10/12/16, 2:18 AM, Mandy Chung wrote:
>>>> On Dec 9, 2016, at 12:49 AM, Sundararajan Athijegannathan<sundararajan.athijegannathan at oracle.com>   wrote:
>>>>
>>>> Please review http://cr.openjdk.java.net/~sundar/8168925/webrev.01/index.html for https://bugs.openjdk.java.net/browse/JDK-8168925
>>>>
>>> Is the order of Plugin.Category enums significant?  You moved COMPRESSOR down - is it necessary?
>> Yes. Without that ReleaseInfoPlugin will receive compressed resources and compressed module-info.class won't be parsed okay by ModuleDescriptor.read (called by ModuleSorter). Note that auto-decompression is done only by LastResourcePool - which is created after all plugins operate. [I kept getting test failures and debugged to find this is the cause of failures!]
>>
> OK.  If the order of the enums determines the plugin ordering, it’d be good adding a comment.
>
>>> Can you look at DefaultImageBuilder::releaseProperties which I think this should be moved to ReleaseInfoPlugin?  The content of `release` should be written when the new entry "/java.base/release” is added to the resource pool.  DefaultImageBuilder does not need to add any more properties to this `release` file as all properties in `release` are known once the graph is resolved.
>> Okay, I'll check if I can move all stuff there. From initial communication [private email], I thought the suggestion was only about MODULES.
> This has beeen my suggestion - move the whole thing out from DefaultImageBuilder.  I don’t see the reason why it has to be done in two separate places.  That’ll be a good clean up.
>
>>>
>>> src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ResourcePoolManager.java
>>> - is this change needed?
>> Yes. Helped me debugging to find out which module's module-info.class was not parsed fine. Exception translation puts the name of the module in the message - which will be missing in the exception thrown by ModuleDescriptor.read(ByteBuffer).
> OK.
>
>>> test/tools/jlink/CustomPluginTest.java
>>>     It’s one option to disable the releaseinfo plugin.  An alternative
>>>     way to fix this test is [2].
>> I could. But that test checks for the module dependency checks that happen after all plugins are exercised. That should happen regardless of release-info plugin is enabled. i.e., even when release-info plugin is disabled, that module missing error should be thrown and the test checks for that.
>>
> OK.  If I happen to push JDK-8169925 before this, you can revert my change to this test.
>
> Thanks
> Mandy