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https://issues.apache.org/jira/browse/FELIX-5410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15665822#comment-15665822
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Alexander Klimetschek edited comment on FELIX-5410 at 11/15/16 2:43 AM:
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Attached a new version that shows referenced, but missing services:
[^FELIX-5410-with-services.patch]
Problems/Open points:
* no way to show more information for dynamically registered services, unless
system tracks history of a "good" state and gives hints on where that services
might have come from; or track the unregistering of dynamic services and
remember that
* would be great to find out if something is missing because
** it is registered dynamically, but that did not happen
** it is missing a configuration
** other conditions
* component implementation is DS specific, that's why the
/system/console/components is in it's separate module under
webconsole-plugins/ds, and why this troubleshooting would need to live
separately as well/or needs to be pluggable (the patch above does it all in the
webconsole project as a demonstration)
!webconsole-troubleshoot-services.png|width=500px!
was (Author: alexander.klimetschek):
Attached a new version that shows referenced, but missing services:
[^FELIX-5410-with-services.patch]
Problems/Open points:
* no way to show more information for dynamically registered services, unless
system tracks history of a "good" state and gives hints on where that services
might have come from; or track the unregistering of dynamic services and
remember that
* would be great to find out if something is missing because
** it is registered dynamically, but that did not happen
** it is missing a configuration
** other conditions
* component implementation is DS specific, that's why the
/system/console/components is in it's separate module under
webconsole-plugins/ds, and why this troubleshooting would need to live
separately as well/or needs to be pluggable (the patch above does it all in the
webconsole project as a demonstration)
!webconsole-troubleshoot-services.png|width=400px!
> Web console plugin for troubleshooting wiring issues
> ----------------------------------------------------
>
> Key: FELIX-5410
> URL: https://issues.apache.org/jira/browse/FELIX-5410
> Project: Felix
> Issue Type: New Feature
> Components: Web Console
> Reporter: Alexander Klimetschek
> Attachments: FELIX-5410-with-services.patch, FELIX-5410.patch,
> webconsole-troubleshoot-services.png, webconsole-troubleshoot.png
>
>
> h4. Feature
> Add a new view/plugin to the standard webconsole that helps to pin point
> which bundles, services or components are the true source for inactive
> bundles or services.
> * For *bundles* the underlying assumption would be a healthy system with all
> bundles active, and thus any inactive can be shown and analyzed as being
> problematic.
> * For *services/components* one can look at inactive _immediate_ services
> that fail because of unsatisfied references. For others, the user might need
> to enter the "problematic" service or component they expect to be running to
> start the analysis.
> h4. Motivation
> In a larger OSGi application with many bundles and components, it can be
> difficult to find out the root cause why certain bundles do not start or why
> a service is not active, especially for folks new to OSGi or with limited
> knowledge about the application. I have seen many people fail, and thus "not
> like" OSGi because of such hurdles during development, where it is easy to
> update on bundle but miss out on crucial dependencies.
> Figuring out is possible through the current web console, but only for
> experts, if you click through the bundle or service details. This is usually
> tedious work, if for example a lower level bundle is the problem, and 200
> others are not active because of it.
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