Thanks to all who responded.
I am now using fileinstall and config admin together like sugested.
The config file is read by fileinstall and put into a managedservice.
Then I use spring osgi cm support to bring the properties into spring.
For me this works well as I do not need to write back changes at the moment.
Compared to my first solution when I was using config admin directly
this aproach has the advantage that I can use plain properties files.
This is much
better than the cache files from config admin service which have a quite
special syntax.
Thanks
Christian
Am 13.10.2010 09:21, schrieb Felix Meschberger:
Hi,
Just to clarify what the OSGi Configuration Admin Service is all about:
- Allows Management Agents (administrators, tools, whatever) to manage
configuration
- Delivers configuration to interested parties
- Persistently stores configuration
A Configuration basically is just a Dictionary whose keys are strings
(case-insensitive) and whose values are of a limited set of types,
basically primitive types, their wrappers plus Collections or Arrays
thereof. (For the OSGi R 4.3 release it is planed to have more
interesting ways to describe configuration....)
Back to your question: Yes you can use Configuration Admin for your
configuration and yes you can put into the configuration whatever you want.
To manage configuration you have a number of tools at your disposal:
- Use the Web Console allowing for a simple GUI to configure values
(makes use of the Metatype Service to describe configurations)
- Use File Install to provide preconfigured configuration files to
be loaded into the Configuration Admin service automatically.
This tool also recognizes changes to files and thus updates
configuration.
- Do it yourself coding an application using the Configuration Admin
Service API...
IIRC the configuration files processed by File Install are more or less
pure property files.
Regards
Felix
On 13.10.2010 09:05, Christian Schneider wrote:
Hi,
I am currently also evaluating the config admin service. I ported a
spring application to osgi and now have the problem where to put the
properties files. The property files contain db and jms connection infos.
Is config admin service the right tool for this job?
I already succeeded in creating the config programmatically and using it
in spring with help of the spring osgi config admin support. As
implementation I used the felix cm bundle. What I do not like is that
the persisted files contain additional information compared to the
normal property files. So it is quite difficult to create and change
them by hand. If I only put the original properties into the file I even
get a nullpointer exception.
Is it possible to conffigure felix cm to work with pure propety files
that do not contain additional information or would you recommand
another aproach?
Thanks
Christian
Am 13.10.2010 08:14, schrieb Felix Meschberger:
Hi,
On 13.10.2010 05:55, LongkerDandy wrote:
Hi
I'm try to use ConfigAdmin to save and load configurations.
The default place of the configurations is under the cache folder and
deep
into the ConfigAdmin bundle.
I don't know it is designed like this.
Yes, the default location is the bundle private data area provided by
the framework through the BundleContext.getDataFile(String) method.
I should suppose to have some pre-defined configuration values,
And when I deliver my software there is no cache folder, how can I put i
into this.
I try to change the configuration location to the felix/conf folder like
this:
felix.cm.dir=../../../conf
But it complains about ".." reference.
I also wondered if I can use the default "config.properties" with
ConfigAdmin
You can use and you can change the setup.
BUT: This is not to inject default configuration. This data area must be
configured private to the Configuration Admin service because changes
are expected to only be carried out by the Configuration Admin service.
If you want to provide "default" configuration you might want to
consider FileInstall and provide respective .cfg files. See [1] for more
details.
Hope this helps.
Regards
Felix
[1] http://felix.apache.org/site/apache-felix-file-install.html
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