Situation : I set up OSGi framework, installed Aries subsystem (and all required
bundles), installed a single trivial feature subsystem containing a single
bundle resource. All worked as expected in normal operation with
install/start/stop/uninstall operations working as described in section 134.14
of the OSGi Enterprise Release 5 spec. Starting and stopping the framework
started and stopped installed subsystem's bundle as expected.
Problem : When the framework is not closed down gracefully (say JVM crash) the
subsystem's bundle does not restart. The proximate cause of this appears to be
that...
* The state for each subsystem is persisted in the DEPLOYMENT.MF file, under
the header "AriesSubsystem-State", stored in the Aries subsystem bundle's
data storage area.
* The state is changed between RESOLVED and ACTIVE (and back again) as the
bundle is started and stopped in a gracefully way.
* A JVM crash leaves the "AriesSubsystem-State" value in the file as ACTIVE
for both root and installed subsystem.
* Upon restart the my feature subsystem's resource bundle is no longer started
as Aries (presumably) assumes it is already ACTIVE.
I'm fairly sure that the "AriesSubsystem-State" header is causing the problem
because hand editing it in both root and installed DEPLOYMENT.MF files back to
'RESOLVED' prior to starting the framework solves the problem.
Happy to add this a bug/improvement request to JIRA - but thought I would check
here first in case I'm way off base.
Steve F.
OSGi environment...
org.eclipse.osgi 3.8.2.v20130124-134944
slf4j.api 1.7.5
slf4j.simple 1.7.5
org.eclipse.equinox.region 1.1.0.v20120522-1841
org.eclipse.equinox.coordinator 1.1.0.v20120522-1841
org.apache.aries.util 1.1.0
org.apache.aries.proxy 1.0.1
org.apache.aries.blueprint 1.0.0
org.apache.aries.application.api 1.0.0
org.apache.aries.application.modeller 1.0.0
org.apache.aries.application.utils 1.0.0
org.apache.felix.resolver 1.0.0
org.apache.felix.bundlerepository 1.6.6
org.apache.aries.subsystem 1.0.0
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*Stephen Flynn*
*Director, JF Technology (UK) Ltd*
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