Jason Montojo created KARAF-1894:
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Summary: Framework's active start level is set to
org.osgi.framework.startlevel.beginning too early when launching Karaf with
empty bundle cache
Key: KARAF-1894
URL: https://issues.apache.org/jira/browse/KARAF-1894
Project: Karaf
Issue Type: Bug
Affects Versions: 2.2.9
Environment: Mac 10.8.2/Oracle JDK 1.6.0_35
Reporter: Jason Montojo
When launching Karaf 2.2.9 with an empty bundle cache, the framework's active
start level is already set to org.osgi.framework.startlevel.beginning before
all the boot features have been started. The impact is that bundles can be
loaded in the wrong order, and File Install ends up scanning the deploy folder
when it's not supposed to.
This is problematic because we're using boot features to load up our core
infrastructure and the deploy folder to host plugins. If we prepackage any
plugins with our product with an empty bundle cache, the plugins get installed
and started before the core.
The attached tarball contains a set of 3 bundles that reproduce the symptoms.
Simply untar within the apache-karaf-2.2.9 directory.
In the test tarball, there are 3 bundles that do the same thing. When start()
is called, they print out their name and the framework's current start level,
then wait for 1 second.
bundle1 (start-level=60) and bundle2 (start-level=80) are part of a boot
feature. However, bundle2 is listed first in the XML. bundle3 is in the
deploy directory. File Install is configured so that it doesn't scan until
start level 81 (via felix.fileinstall.active.level).
I'm expecting that the bundles are loaded in this order: bundle1, bundle2,
bundle3.
If I clear the bundle cache and start Karaf, I get the following output:
[bundle2] 100
[bundle3] 100
[bundle1] 100
This indicates that when bundle2's start() is called, the framework's start
level is already set to org.osgi.framework.startlevel.beginning (in this case,
100) before the boot features have started.
If I run Karaf again without clearing the bundle cache, I get the following:
[bundle1] 60
[bundle2] 80
[bundle3] 80
This is better, but felix.fileinstall.active.level is set to 81, so bundle3
should not be starting at start level 80. This is probably a separate issue.
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