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Re: [equinox-dev] ConfigAdmin getConfiguration from external storage

Hi Neil,

Actually I want not to call update on Configuration object because in that way the configuration will go to internal configuration store of ConfigAdmin. I just want when getConfiguration is called and nothing is found in internal configuration store of ConfigAdmin, to hook exactly there another implementation which will go to an external storage and get what I need. Is this achievable and how is the best way to do that in the Equinox implementation?

Best regards,
   Philip Yankov

On Fri, May 13, 2011 at 3:29 PM, Neil Bartlett <njbartlett@xxxxxxxxx> wrote:
Hi Philip,

The normal way to hook config admin into an external data storage is
to write a management agent that *calls* getConfiguration() and
supplies the data via an update to the Configuration object. That way
your agent can work with any config admin implementation.

Typically config admin implementations use their own internal storage
area for persistence. If you want to customise that internal storage
then you may need to write your own implementation (though I think at
least the Felix implementation has an extension mechanism so you don't
have to write the whole thing).


On Fri, May 13, 2011 at 12:43 PM, Philip Yankov <duxmaster@xxxxxxxxx> wrote:
> Hi,
> Is it possible to get a notification when
> ConfigurationAdmin.getConfiguration( with any pid ) is called and return a
> configuration from an external storage then? Are you aware of existing
> mechanism to achieve this? Alternatively, we thought of pluging a hook
> inside getConfiguration() method, or directly extending
> ConfigurationAdminImpl and registering it instead of the current service
> (ConfigurationAdminImpl should be made public though). How do you think,
> what would be the preferred approach?
> Best regards,
>   Philip Yankov
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