[jbosstools-dev] Querying a p2 repo from a Mojo

[Max Rydahl Andersen]

isn't this what the p2 api tools does ?

which Rob and you had a POC of a maven plugins to run them ?

/max

On Tue, Oct 01, 2013 at 04:29:35PM +0200, Mickael Istria wrote:
>Hi all,
>
>I would like to write a Mojo for the "verify" goal which takes as 
>input a baseline, and compare output of the module build with a 
>baseline to tell whether the version of current module should be 
>bumped. So far the only criterion would simply be that for bundle 
>x.y.z, if baseline already contains x.y.z2 with z2 >= z, then build 
>would fail or warn to remind the developer to bump the version.
>
>[  You'll notice there that this is not the process used by Eclipse 
>platform, as it implies that versions should be bumped systematically 
>whereas Platform build tends to re-use artifacts as much as possible. 
>So the use-case mentioned about is not a baseline replacement, but 
>more a version conformance taking baseline as reference  ]
>
>This "ValidateVersionAgainstBaselineMojo" would simply need to 
>execute a query against the baseline repositories. However, it's not 
>very trivial to implement such p2 related task with Tycho as such 
>actions have to be turned into services. So far, I've found that the 
>service which seems the closest from the ability to make queries 
>against a p2 repo is the BaselineService. However, it is too limited 
>as it only checks bundles that match exactly (x.y.z.qualifier equal), 
>whereas I'd like basically to put some version range. Is there 
>currently a way to ask for a bundle of given version range from a 
>Mojo or should I propose a patch that adds such a method to the 
>BaselineService? The method would look like
>
>public Collection<IP2Artifact> getBundles(Collection<MavenRepositoryLocation> baselineLocations, String bundleId, VersionRange range);
>
>Does this use-case make sense to you? Is there any chance that if I 
>write such a method, it gets integrated in Tycho so I can go ahead 
>and write a Mojo?
>When I'm done with this very simple Mojo, I'd like to go a step 
>forward and implement another Mojo that gives hints about semantic 
>versioning, as BND does http://blog.osgi.org/2013/09/baselining-semantic-versioning-made-easy.html 
>, reusing recent BND improvements and API.
>
>Cheers,
>-- 
>Mickael Istria
>Eclipse developer at JBoss, by Red Hat <http://www.jboss.org/tools>
>My blog <http://mickaelistria.wordpress.com> - My Tweets 
><http://twitter.com/mickaelistria>

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