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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Updated] (KARAF-2508) make osgi:find-class a more useful command
Date Thu, 21 May 2015 07:04:00 GMT

     [ https://issues.apache.org/jira/browse/KARAF-2508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Baptiste Onofré updated KARAF-2508:
----------------------------------------
    Fix Version/s:     (was: 3.0.4)
                   3.0.5

> make osgi:find-class a more useful command
> ------------------------------------------
>
>                 Key: KARAF-2508
>                 URL: https://issues.apache.org/jira/browse/KARAF-2508
>             Project: Karaf
>          Issue Type: Improvement
>          Components: karaf-shell
>    Affects Versions: 2.3.3
>            Reporter: Amichai Rothman
>            Assignee: Jean-Baptiste Onofré
>            Priority: Minor
>             Fix For: 4.0.0.M3, 2.4.3, 3.0.5
>
>
> I recently had to track down which bundle contains a certain class, and found the find-class
command wanting. A few simple improvements would make it much more useful:
> 1. Add an --exact/-e option which doesn't automatically add asterisks at both ends of
the string. In my case I was looking for the javax.jms.Connection class, and since the search
is only on the last part of the name, this returned all classes in all packages which have
the word Connection in their name, which added up to hundreds of results. with --exact I could
look for what I want exactly, or choose to add asterisks at one or both ends explicitly in
the search string if I wanted to.
> 2. Add a --local/-l option which adds BundleWiring.LISTRESOURCES_LOCAL to the listResources
method call bitmask. With the current implementation, it returns both bundles containing the
given class name and classes that import it from other bundles, which is useful in some cases.
But with the --local option it could show only the bundles that actually contain the class
(whether exported or not, unlike the exports command), which is far more useful in tracking
down some classloading issues.
> 3. Add the bundle ID (at least) on the beginning of every printed line. This makes it
amenable to grepping (without it a grep loses all bundle information, which is the whole point
of using this command).
> 4. As a somewhat more complex alternative to #3, it would be nice if you could specify
a fully qualified class name and not only the last part of the name. The command can split
the search string around periods, pass the last part to listResources, then internally grep/match
the full name. That would make it truly flexible in finding classes. Asterisks would have
to be treated accordingly.
> I think adding these options (#1-#3 are trivial implementations), or at least some of
them, would make the command extremely useful when performing classloading diagnosis.



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