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From "Richard S. Hall (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (FELIX-2459) Wrong error message on a missing package
Date Fri, 02 Jul 2010 15:54:49 GMT

     [ https://issues.apache.org/jira/browse/FELIX-2459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Richard S. Hall resolved FELIX-2459.
------------------------------------

      Assignee: Richard S. Hall
    Resolution: Fixed

Please close this bug if satisfied. Thanks.

> Wrong error message on a missing package
> ----------------------------------------
>
>                 Key: FELIX-2459
>                 URL: https://issues.apache.org/jira/browse/FELIX-2459
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: framework-3.0.1
>            Reporter: Florent BENOIT
>            Assignee: Richard S. Hall
>             Fix For: framework-3.2.0
>
>         Attachments: jonas-web-container-tomcat-6.0-5.2.0-M3-SNAPSHOT-ipojo.jar
>
>
>   Hi,
> Here is the case :
>  I have one bundle with a missing import, I need to fix the bundle but Felix 3.0.1 is
not helping me with the errors that are thrown. (the missing package required to start my
bundle is "org.apache.juli.logging") and this missing package is not reported as a missing
package in 3.0.1 while it was reported with Felix 2.0.5
> When testing this bundle with Felix 3.0.1, I get the following message :
> org.osgi.framework.BundleException: Unresolved constraint in bundle xxx [89]: Unable
to resolve 89.0: missing requirement [89.0] package; (&(package=org.apache.catalina.tribes.group.interceptors)(version>=7.0.0))
- [89.0] package; (&(package=org.apache.catalina.tribes.group.interceptors)(version>=7.0.0))
> 	at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3421)
> 	at org.apache.felix.framework.Felix.startBundle(Felix.java:1754)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:905)
> This package (org.apache.catalina.tribes.group.interceptors) is present in my bundle
archive. 
> It tells me that a requirement is not available but I don't know which package is missing
which is a big problem as it's quite difficult to fix an issue when there is a missing information
> By switching back to Felix v2.0.5, I have the following error :
> org.osgi.framework.BundleException: Unresolved constraint in bundle xxx [89]: package;
(package=org.apache.juli.logging)
> 	at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3299)
> 	at org.apache.felix.framework.Felix.startBundle(Felix.java:1657)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:905)
> And now, we can see that the missing package is printed
> By adding some breakpoint in Felix 3.0.1, I can see that the original error is raised
in ResolverImpl class but then this error is ignored
> Here is the code that is raising my expecting missing package :
>             if ((candidates.size() == 0) && !req.isOptional())
>             {
>                 ResolveException ex =
>                     new ResolveException("Unable to resolve " + module
>                         + ": missing requirement " + req, module, req);
>                 resultCache.put(module, ex);
>                 m_logger.log(Logger.LOG_DEBUG, "No viable candidates", ex);
>                 throw ex;
>             }
> The exception which is built here is :
> org.apache.felix.framework.resolver.ResolveException: Unable to resolve 89.0: missing
requirement [89.0] package; (package=org.apache.juli.logging)
> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 437

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.resolve(Resolver$ResolverState, Module) line: 78	
> 	Felix$FelixResolver.resolve(Module) line: 4005	
> 	Felix.resolveBundle(BundleImpl) line: 3414	
> 	Felix.startBundle(BundleImpl, int) line: 1754	
> 	BundleImpl.start(int) line: 905	
> But this issue is ignored at the line 422 by the following code :
>                     try
>                     {
>                         populateCandidates(state, candCap.getModule(),
>                             candidateMap, resultCache);
>                     }
>                     catch (ResolveException ex)  <--- silently catched
>                     {
>                         // Remove the candidate since we weren't able to
>                         // populate its candidates.
>                         itCandCap.remove();
>                     }
> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 422

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.populateCandidates(Resolver$ResolverState, Module, Map, Map) line: 415

> 	ResolverImpl.resolve(Resolver$ResolverState, Module) line: 78	
> 	Felix$FelixResolver.resolve(Module) line: 4005	
> 	Felix.resolveBundle(BundleImpl) line: 3414	
> 	Felix.startBundle(BundleImpl, int) line: 1754	
> 	BundleImpl.start(int) line: 905	
> Then I get an error by Felix but not the original root cause which is a problem for me
> I get at these lines :
> ex = org.apache.felix.framework.resolver.ResolveException: Unable to resolve 89.0: missing
requirement [89.0] package; (&(package=org.apache.catalina.tribes.group.interceptors)(version>=7.0.0))
>                             catch (ResolveException ex)
>                             {
>                                 if ((ex.getRequirement() != null)
>                                     && (ex.getRequirement() instanceof FragmentRequirement)
>                                     && (rootModule !=
>                                         ((FragmentRequirement) ex.getRequirement()).getFragment()))
>                                 {
>                                     m_resolverState.detachFragment(
>                                         newRootModule,
>                                         ((FragmentRequirement) ex.getRequirement()).getFragment());
>                                     repeat = true;
>                                 }
>                                 else
>                                 {
>                                     throw ex;
>                                 }
>                             }
> 	Felix$FelixResolver.resolve(Module) line: 4013	
> 	Felix.resolveBundle(BundleImpl) line: 3414	
> 	Felix.startBundle(BundleImpl, int) line: 1754	
> 	BundleImpl.start(int) line: 905	
> and this is the error which is reported to me, but this can't help me as the true missing
package has been lost.

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