Hi all,
I have recently upgraded to the release candidate versions of Equinox
3.5 and am seeing some unexpected behavior from DS.
The first question I have is in regard to component activation. In the
RC versions I have noticed that if an exception is thrown in the
activate() method, the SCR will attempt to instantiate the component
again, a variable number of times. As far as I can tell, this number of
times seems to be related to how many other bundles
(components/services) are activated within the framework.
So, for example:
protected void activate(ComponentContext context)
{
System.out.println("Failing activation");
throw new RuntimeException();
}
"Failing activation" will be printed once for a run configuration that
includes that bundle, the OSGi bundles, and nothing else. However, if a
number of other bundles are activated, it can appear more than once. Is
the SCR attempting to start this bundle repeatedly? If so, does that
behavior jive with the specification? This behavior is new to the 3.5
releases, and did not occur in 3.4.2.
The second question I have is regarding the exception logging behavior
of DS. What has been doubly confusing about this simple example
situation is that I am not seeing any report about the exception thrown
in the activate() method. No log file is generated in the configuration
directory, and no stack trace is printed to the console. (I'm using the
-consoleLog program argument). The strange thing is that if I use a much
more complex run configuration with many bundles using DS, I can slip an
exception into the activate() method of one of them and I will see the
log file and console statements generated.
The set of Equinox jars I am using is (3.5 RC4):
org.eclipse.equinox.ds_1.1.0.v20090601.jar
org.eclipse.equinox.event_1.1.100.v20090520-1800.jar
org.eclipse.equinox.log_1.2.0.v20090520-1800.jar
org.eclipse.equinox.util_1.0.100.v20090520-1800.jar
org.eclipse.osgi.services_3.2.0.v20090520-1800.jar
org.eclipse.osgi.util_3.2.0.v20090520-1800.jar
org.eclipse.osgi_3.5.0.v20090520.jar
Program arguments are:
-console -consoleLog
Any thoughts or advice would be appreciated.
Thanks,
-Mike Furtak
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