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Subject: Re: Null service in Karaf command
To: user@karaf.apache.org
References: <f5c6b2527523cc9236aad9e19ab1b01f@petinou.fr>
 <568CB82C.70607@nanthrax.net> <9f43cfa0eecc5a307286f93f33dfdd0d@petinou.fr>
From: =?UTF-8?Q?Jean-Baptiste_Onofr=c3=a9?= <jb@nanthrax.net>
Message-ID: <568CCDD9.30400@nanthrax.net>
Date: Wed, 6 Jan 2016 09:18:33 +0100
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No problem, you're welcome ;)

On 01/06/2016 09:04 AM, ben@petinou.fr wrote:
> It works!
>
> Thank you very much!
>
> Le 06.01.2016 07:46, Jean-Baptiste Onofré a écrit :
>> You should not mix DS and Karaf shell API in the same bundle (it's one
>> or the other).
>>
>> So, you should have:
>>
>> import org.apache.karaf.shell.api.action.Action;
>> import org.apache.karaf.shell.api.action.lifecycle.Reference;
>> import org.apache.karaf.shell.api.action.lifecycle.Service;
>> import org.apache.karaf.shell.api.action.Command;
>>
>> @Command(scope = "myscope", name = "myCmd", description = "desc")
>> @Service
>> public class MyCmd implements Action {
>>
>>    @Reference
>>    private Model model;
>>
>>       @Override
>>       public Object execute() throws Exception {
>>     ...
>>       }
>>
>> }
>>
>> And you just use the Karaf command plugin:
>>
>>                 <plugin>
>>                     <groupId>org.apache.karaf.tooling</groupId>
>> <artifactId>karaf-services-maven-plugin</artifactId>
>>                     <version>4.0.3</version>
>>                     <executions>
>>                         <execution>
>>                             <id>service-metadata-generate</id>
>>                             <phase>process-classes</phase>
>>                             <goals>
>>                                 <goal>service-metadata-generate</goal>
>>                             </goals>
>>                         </execution>
>>                     </executions>
>>                 </plugin>
>>
>>
>> No need to use DS in the command.
>>
>> Regards
>> JB
>>
>> On 01/05/2016 09:30 PM, ben@petinou.fr wrote:
>>> Hi everyone,
>>>
>>> I'm trying to create a Karaf Command that uses one of my services (via
>>> Declarative Services configured with maven-bundle-plugin).
>>>
>>> Here is my Karaf command:
>>>
>>> @Command(scope = "myscope", name = "myCmd", description = "desc")
>>> @Service
>>> @Component(immediate = true)
>>> public class MyCmd implements Action {
>>>      /** Reference to the model. */
>>>      private Model model;
>>>
>>>      @Override
>>>      public Object execute() throws Exception {
>>>           System.out.println("Model: " + model);
>>>           return null;
>>>      }
>>>
>>>      @Reference
>>>      public void setModel(final Model modelToSet) {
>>>          System.out.println("MyCmd.setModel: " + modelToSet);
>>>          model = modelToSet;
>>>      }
>>>
>>>      public void unsetModel(final Model modelToSet) {
>>>          System.out.println("MyCmd.unsetModel");
>>>          model = null;
>>>      }
>>> }
>>>
>>> When I start Karaf, I have the following output in the console:
>>> MyCmd.setModel: ModelImpl@23623746
>>>
>>> But when I call the command, the model is null...
>>> karaf@root()> myscope:myCmd
>>> Model: null
>>>
>>> I guess there is something wrong with how Karaf creates the commands (I
>>> guess the commands are instantiated each time they are called from the
>>> console).
>>>
>>> I just declared the ModelImpl class with @Component (and it implements
>>> my Model interface).
>>>
>>> How could I make it work?
>>>
>>> Kind regards,
>>>
>>> Ben

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com