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https://issues.apache.org/jira/browse/ARIES-1590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924170#comment-15924170
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Tom De Wolf commented on ARIES-1590:
------------------------------------
[~tjwatson] [[email protected]] using pull request
https://github.com/apache/aries/pull/70 I kept the fix for ARIES-1442 and even
fixed the case for the FragmentHost capability which a subsystem should also
not impersonate. Additionally, at installation time it should not expose the
capabilities of its contituents because it will conflict with the
LocalRepository in which the resolver then also finds a resource capable of
doing the same resulting in these resolve chain conflicts.
Can someone have a look at the pull request? thx
Then we can release 2.1.0 and get all the work being done out there.
> Subsystem install fails due to unexpected resolve conflict
> ----------------------------------------------------------
>
> Key: ARIES-1590
> URL: https://issues.apache.org/jira/browse/ARIES-1590
> Project: Aries
> Issue Type: Bug
> Components: Subsystem
> Reporter: Tom De Wolf
> Priority: Blocker
> Fix For: subsystem-2.1.0
>
> Attachments: reproduce-base-subsystem-4.1.2-SNAPSHOT.esa,
> reproduce-subsystem-4.1.2-SNAPSHOT.esa
>
>
> When we use the 2.0.9-SNAPSHOT version currently in development we get an
> unexpected resolve conflict:
> {panel}
> DEBUG: Candidate permutation failed due to a conflict between imports; will
> try another if possible. (org.osgi.service.resolver.ResolutionException: Uses
> constraint violation. Unable to resolve resource
> org.apache.servicemix.bundles.spring-core [116.0] because it is exposed to
> package 'org.aspectj.bridge' from resources
> com.reproduce.reproduce-base-subsystem
> [org.apache.aries.subsystem.core.internal.BasicSubsystem: children=0,
> constituents=60, id=3,
> location=file:///Users/tom/Documents/code/aca-common/osgi-subsystem-support/reproduce-base-subsystem/target/reproduce-base-subsystem-4.1.2-SNAPSHOT.esa,
> parents=1, state=INSTALLED,
> symbolicName=com.reproduce.reproduce-base-subsystem,
> type=osgi.subsystem.feature, version=4.1.2.SNAPSHOT] and
> org.apache.servicemix.bundles.aspectj [111.0] via two dependency chains.
> Chain 1:
> org.apache.servicemix.bundles.spring-core [116.0]
> import:
> (&(osgi.wiring.package=org.aspectj.bridge)(version>=1.7.1)(!(version>=2.0.0)))
> |
> export: osgi.wiring.package: org.aspectj.bridge
> com.reproduce.reproduce-base-subsystem
> [org.apache.aries.subsystem.core.internal.BasicSubsystem: children=0,
> constituents=60, id=3,
> location=file:///Users/tom/Documents/code/aca-common/osgi-subsystem-support/reproduce-base-subsystem/target/reproduce-base-subsystem-4.1.2-SNAPSHOT.esa,
> parents=1, state=INSTALLED,
> symbolicName=com.reproduce.reproduce-base-subsystem,
> type=osgi.subsystem.feature, version=4.1.2.SNAPSHOT]
> Chain 2:
> org.apache.servicemix.bundles.spring-core [116.0]
> import:
> (&(osgi.wiring.package=org.aspectj.weaver)(version>=1.7.1)(!(version>=2.0.0)))
> |
> export: osgi.wiring.package=org.aspectj.weaver;
> uses:=org.aspectj.weaver.patterns
> com.reproduce.reproduce-base-subsystem
> [org.apache.aries.subsystem.core.internal.BasicSubsystem: children=0,
> constituents=60, id=3,
> location=file:///Users/tom/Documents/code/aca-common/osgi-subsystem-support/reproduce-base-subsystem/target/reproduce-base-subsystem-4.1.2-SNAPSHOT.esa,
> parents=1, state=INSTALLED,
> symbolicName=com.reproduce.reproduce-base-subsystem,
> type=osgi.subsystem.feature, version=4.1.2.SNAPSHOT]
> import:
> (&(osgi.wiring.package=org.aspectj.weaver.patterns)(&(version>=1.7.1)(!(version>=2.0.0))))
> |
> export: osgi.wiring.package: org.aspectj.weaver.patterns;
> uses:=org.aspectj.bridge
> export: osgi.wiring.package=org.aspectj.bridge
> org.apache.servicemix.bundles.aspectj [111.0])
> {panel}
> It is unexpected because 1 of the 2 chains points to the actual bundle that
> exports the package and the other of the 2 chains points to the base
> subsystem already installed in the runtime. In fact the bundle is part of
> that subsystem so it should consider both as exactly the same and not
> consider it as 2 chains he cannot resolve.
> Not sure if it is related to ARIES-1588 and the commit mentioned there but
> that commit does affect how already installed subsystems are taken into
> account in the resolve process.
> Note: we are using the felix resolver 1.4.0, verified it has the same problem
> with 1.8.0
> Steps to reproduce:
> 1. start clean felix
> 2. install the attached reproduce-base-subsystem-4.1.2-SNAPSHOT.esa, do not
> start it
> 3. install the attached reproduce-subsystem-4.1.2-SNAPSHOT.esa
> Step 3 will start failing in DEBUG logging with chain errors like above. It
> will try a number of permutations but it will not get out of it.
> Note: which bundles and packages are shown in the example log above are less
> important as we have multiple such kind of errors for which only the package
> and bundles differ.
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