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
Environment: It affects Felix 3.0.1 but this version is not listed as
released version in this issue tracker (but it has been released !)
Reporter: Florent BENOIT
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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