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https://issues.apache.org/jira/browse/FELIX-3661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pierre De Rop reopened FELIX-3661:
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Even after having refactored my "agent" component in order to avoid circular
dependencies, the expected service (CompositeFactory) is not yet bound to my
"agent" component.
In my refactoring, I managed to not register anymore the services that might
lead to cycles.
For now I reopen the issue and will continue to investigate.
It's actually difficult for now to make a diagnostic because I have many
services which are not mine, and for now, it seems that when some cycles are
detected, there are no warnings logged by SCR (or they are logged in other
conditions ?) So maybe I have missed some other possible cycles ?
Could something be done in order to help tracking such cyclic dependencies ?
for example some logs I could add in SCR ?
thanks.
> Scr sometimes does not invoke Reference bind method
> ---------------------------------------------------
>
> Key: FELIX-3661
> URL: https://issues.apache.org/jira/browse/FELIX-3661
> Project: Felix
> Issue Type: Bug
> Components: Declarative Services (SCR)
> Reporter: Pierre De Rop
> Assignee: David Jencks
> Attachments: msg2.log, msg.log
>
>
> With scr from trunk: sometimes, a satisfied Reference bind method is not
> invoked.
> I'm not sure, but this might be related to the FELIX-3659 issue and/or when
> Reference types are org.osgi.service.ComponentFactory types.
> The use case is the following:
> - I have a DS component (name="agent"), which depends on the CompositeFactory
> service (ref is dynamic, optional, cardinality=0..N).
> - the "agent" component is started (at this point), the CompositeFactory is
> not yet available
> - next, the implementation bundle for the CompositeFactory service starts and
> registers the service, using bundleContext.registerService.
> - but the "agent" component is not invoked in its
> bindCompositeFactory(CompositeFactory) method.
> I have attached a logfile which illustrates the problem.
> 1) Line 8491: the '"agent" component is being created, and some bind method
> are successfully invoked, except the "bindCompositeFactory" method (but this
> is normal since the service is optional, and not yet available):
> 2012-09-11 23:09:21,147 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [agent] For dependency loggerRepository, optional: false; to bind:
> {[org.apache.log4j.spi.LoggerRepository]=org.apache.felix.scr.impl.manager.AbstractComponentManager$RefPair@1b7a875}
> 2012-09-11 23:09:21,147 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [agent] invoking bind: bindLoggerRepository
> 2012-09-11 23:09:21,147 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [agent] For dependency compositeFactory, optional: true; to bind: {}
> (here the bind for loggerRepository is invoked, but not for compositeFactory
> ... normal behavior for now.
> 2) at line 8644, the CompositeFactory service is being registered, but we see
> the "component not yet created, assuming bind method call succeeded" log and
> the bindCompositeFactory method on the "agent" component is not invoked.
> However, another
> "com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand" DS
> component is succesfully bound with the CompositeFactory, but this component
> depends on the CompositeService, using a ServiceReference type, instead of
> the actual CompositeFactory type, in the bind method signature ...
> 2012-09-11 23:09:21,222 ProxyAppReporter-FastCacheListener WARN
> com.alcatel_lucent.as.service.composite.impl.CompositeFactoryImpl -
> Registering CompositeFactory ...
> 2012-09-11 23:09:21,222 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [agent] Dependency Manager: Adding Service
> com.alcatel_lucent.as.service.composite.CompositeFactory/565
> 2012-09-11 23:09:21,222 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [agent] DependencyManager : component not yet created, assuming bind method
> call succeeded
> 2012-09-11 23:09:21,223 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.GogoCompositeCommand]
> Dependency Manager: Adding Service
> com.alcatel_lucent.as.service.composite.CompositeFactory/565
> 2012-09-11 23:09:21,223 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.GogoCompositeCommand]
> DependencyManager : component not yet created, assuming bind method call
> succeeded
> 2012-09-11 23:09:21,223 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> Dependency Manager: Adding Service
> com.alcatel_lucent.as.service.composite.CompositeFactory/565
> 2012-09-11 23:09:21,223 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> getting bind: bindCompositeFactory
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> Locating method bindCompositeFactory in class
> com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> doFindMethod: Looking for method
> com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand.bindCompositeFactory
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> doFindMethod: Found Method public void
> com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand.bindCompositeFactory(org.osgi.framework.ServiceReference)
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> Found bind method: public void
> com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand.bindCompositeFactory(org.osgi.framework.ServiceReference)
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener DEBUG osgi -
> [com.alcatel_lucent.as.service.composite.impl.shell.FelixCompositeCommand]
> invoking bind: bindCompositeFactory
> 2012-09-11 23:09:21,224 ProxyAppReporter-FastCacheListener INFO
> osgi.event.service - Service registered by bundle
> com.alcatel_lucent.as.service.composite.impl(1.1100.01)
>
> {objectClass=[com.alcatel_lucent.as.service.composite.CompositeFactory],service.id=565}
> Hope that the log file will be enough to understand the issue ?
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