I checked, and the annotations package are not required during runtime. If
I use the headers command to list the packages required by a bundle where
SCR components are used, the package
"org.osgi.service.component.annotations" is not required.
In the previous email I forgot to mention that I install the scr feature.
For karaf shell commands, I don't use SCR. I use Karaf's API for commands.
Follow a simple command using a service provided by an SCR component. For
the command to be recognized by Karaf it is necessary to include a header
"Karaf-Commands:*"in the bundle manifest. I use bnd-maven-plugin to build
my bundles
import org.apache.karaf.shell.api.action.Action;
> import org.apache.karaf.shell.api.action.Argument;
> import org.apache.karaf.shell.api.action.Command;
> import org.apache.karaf.shell.api.action.lifecycle.Reference;
> import org.apache.karaf.shell.api.action.lifecycle.Service;
>
> import com.atobe.ort.photo.repository.PhotoRepositoryService;
>
> @Command(scope = "photorepo", name = "purge", description = "Purge")
> @Service
> public class PurgeCommand implements Action {
>
> @Reference
> PhotoRepositoryService repositoryService;
>
> @Argument(index = 0, name = "days", description = "Days", multiValued
> = false, required = true)
> Integer days;
>
> @Override
> public Object execute() throws Exception {
>
> Duration age = Duration.ofDays(days);
> repositoryService.purgePhotos(age);
> return null;
> }
>
> }
The corresponding "bnd.bnd" file:
> Bundle-Name: ${project.name}
> Bundle-Description: ${project.description}
> Karaf-Commands:*
Best regards,
João
On Thu, Apr 17, 2025 at 4:41 PM Ephemeris Lappis <ephemeris.lap...@gmail.com>
wrote:
> Hello João !
>
> First, thanks for your answer.
>
> I see your dependency as "provided", so I suppose that you assume that
> classes are exported by some bundle. In my case I didn't find any standard
> feature with a bundle that exports the required annotations packages. What
> did you do to get them at runtime ?
>
> As I aim to provide custom shell commands, I'd initially prefer to use a
> basic OSGi design, and using annotations, and. with the SCR files being
> generated by the bundle plugin.
>
> An alternate solution could be using Karaf packages, as described in these
> examples (
> https://github.com/apache/karaf/blob/main/examples/karaf-command-example/karaf-command-example-command/src/main/java/org/apache/karaf/examples/command/command/AddCommand.java
> ).
>
> But this also fails : my custom command is not correctly detected and
> installed.
>
> An idea of the best way to do that ?
>
> Thanks again.
>
> Regards.
>
> Le jeu. 17 avr. 2025 à 13:47, João Assunção <joao.assun...@exploitsys.com>
> a écrit :
>
>> Hi,
>> I'm almost sure the annotations are not needed during execution. During
>> runtime, SCR uses the XML files included inside the bundle (jar).
>> The bundle plugin uses the annotation in the classes to generate those
>> xml descriptors.
>> In my maven projects, I normally use the "bom" dependency provided by
>> karaf to ensure I'm using the same dependencies used by Karaf. For example:
>>
>>> <dependency>
>>> <groupId>org.apache.karaf</groupId>
>>> <artifactId>karaf-bom</artifactId>
>>> <version>${karaf.version}</version>
>>> <type>pom</type>
>>> <scope>import</scope>
>>> </dependency>
>>
>>
>> But for my convenience, I tend to use the Enroute dependency:
>> <dependency>
>> <groupId>org.osgi.enroute</groupId>
>> <artifactId>osgi-api</artifactId>
>> <version>7.0.0</version>
>> <type>pom</type>
>> <scope>provided</scope>
>>
>>> </dependency>
>>
>>
>> Best regards,
>> João
>>
>>
>>
>>
>>
>> On Thu, Apr 17, 2025 at 11:50 AM Ephemeris Lappis <
>> ephemeris.lap...@gmail.com> wrote:
>>
>>> Hello.
>>>
>>> I can't find if a Karaf feature exists to provide the annotations for
>>> SCR, such as Service, Reference, etc.
>>>
>>> Installing the feature "scr" just adds bundles to manage the runtime,
>>> not the annotations.
>>>
>>> Perhaps the packages are provided by a Compendium bundle.
>>>
>>> Is there a provided feature that includes them, or do we have to add
>>> explicitly bundles for that ? In this case, what is the right version to
>>> match the OSGi framework of Karaf 4.4.x ?
>>>
>>> Thanks for your help.
>>>
>>> Regards.
>>>
>>
