Exactly: maven-bundle-plugin 2.3.7 doesn't generate the
Requirement/Capability headers. That's why it works. If you deploy your
bundles built with this version, you won't have the problem.

maven-bundle-plugin 5.1.4 generates the req/cap headers, used by the
features service. If you want, you can disable req/cap headers generation.
Just pass the following instructions to maven-bundle-plugin:

<_norequirements>true</_norequirements>
<_nocapabilities>true</_nocapabilities>

So, it's what I said in my previous email: it's not related directly to
Karaf (Karaf features resolver use req/cap since Karaf 4.2.x), it's because
your bundles MANIFEST have changed (when you upgraded the
maven-bundle-plugin version).

Regards
JB

On Wed, Mar 9, 2022 at 8:37 PM Bengt Rodehav <be...@rodehav.com> wrote:

> Aha - thanks a lot. I thought I was goin crazy. I use pax-jdbc for the
> data source. I'll need to check if it can provide the capability. Or, maybe
> the problem is in the other end. I updated to a newer version of maven
> bundle plugin (from 2.3.7 to 5.1.4) - maybe the old one didn't require the
> capability.
>
> /Bengt
>
> On Wed, 9 Mar 2022, 18:27 Jean-Baptiste Onofré, <j...@nanthrax.net> wrote:
>
>> No, you didn't get my point.
>>
>> The fact the datasource is there or not doesn't matter at runtime if it
>> doesn't provide the capability.
>>
>> Let me explain.
>>
>> Your bundles history-stuff contains in META-INF/MANIFEST:
>>
>> Require-Capability:
>> osgi.service;effective:=active;objectClass="javax.sql.DataSource";filter=....
>>
>> When you install with bundle:install, this header is simply ignored.
>>
>> BUT, when you install using features service, the feature resolver check
>> all bundles requirements/capabilities.
>>
>> So, the feature resolver is looking for:
>> - a bundle containing Provide-Capability header in MANIFEST matching the
>> requirement
>> - a feature containing <capability/> matching the requirement
>>
>> It's nothing related to runtime (the actual bundle installed and
>> running), only the MANIFEST cap/req matter;
>>
>> So, in your case, you can just provide the capability in the feature
>> providing the datasource. It's exactly what you can see in the
>> karaf-jpa-example:
>> https://github.com/apache/karaf/blob/main/examples/karaf-jpa-example/karaf-jpa-example-features/src/main/feature/feature.xml#L28
>>
>> Regards
>> JB
>>
>> On Wed, Mar 9, 2022 at 5:30 PM Bengt Rodehav <be...@rodehav.com> wrote:
>>
>>> But the  filetransfoerhistoryjta datasource is there. I've verified
>>> that. And if I install the bundle directly instead of going through the
>>> feature it works fine and connects to the datasource. Why can it not be
>>> found when I go through the feature but when I install the bundle directly?
>>>
>>> /Bengt
>>>
>>> Den ons 9 mars 2022 kl 17:10 skrev Jean-Baptiste Onofré <j...@nanthrax.net
>>> >:
>>>
>>>> I don't think anything changed on the resolver, maybe you updated
>>>> maven-bundle-plugin or bnd to create your bundle, and now it includes the
>>>> requirement (whereas your bundles didn't contain requirement in MANIFEST
>>>> before).
>>>>
>>>> On Wed, Mar 9, 2022 at 4:59 PM Bengt Rodehav <be...@rodehav.com> wrote:
>>>>
>>>>> I didn't have any problems with this using Karaf 4.3.3. Do you know if
>>>>> something has changed? I'm using Karaf 4.3.6 now.
>>>>>
>>>>> /Bengt
>>>>>
>>>>> Den ons 9 mars 2022 kl 16:46 skrev Bengt Rodehav <be...@rodehav.com>:
>>>>>
>>>>>> Is there any way to stop the feature installer from using the
>>>>>> resolver?
>>>>>>
>>>>>> /Bengt
>>>>>>
>>>>>> Den ons 9 mars 2022 kl 16:37 skrev Bengt Rodehav <be...@rodehav.com>:
>>>>>>
>>>>>>> Unfortunately I didn't get any extra information. I got the same as
>>>>>>> before which is:
>>>>>>>
>>>>>>> 2022-03-09T16:26:02,494 | INFO  | pipe-feature:install -v
>>>>>>> connect-filetransfer-history-db | FeaturesServiceImpl              | 18 
>>>>>>> -
>>>>>>> org.apache.karaf.features.core - 4.3.6 | Adding features:
>>>>>>> connect-filetransfer-history-db/[3.1.0.SNAPSHOT,3.1.0.SNAPSHOT]
>>>>>>> 2022-03-09T16:26:02,901 | ERROR | Karaf local console user karaf |
>>>>>>> ShellUtil                        | 70 - org.apache.karaf.shell.core - 
>>>>>>> 4.3.6
>>>>>>> | Exception caught while executing command
>>>>>>> org.apache.felix.resolver.reason.ReasonException: Unable to resolve
>>>>>>> root: missing requirement [root] osgi.identity;
>>>>>>> osgi.identity=connect-filetransfer-history-db; type=karaf.feature;
>>>>>>> version="[3.1.0.SNAPSHOT,3.1.0.SNAPSHOT]";
>>>>>>> filter:="(&(osgi.identity=connect-filetransfer-history-db)(type=karaf.feature)(version>=3.1.0.SNAPSHOT)(version<=3.1.0.SNAPSHOT))"
>>>>>>> [caused by: Unable to resolve
>>>>>>> connect-filetransfer-history-db/3.1.0.SNAPSHOT: missing requirement
>>>>>>> [connect-filetransfer-history-db/3.1.0.SNAPSHOT] osgi.identity;
>>>>>>> osgi.identity=se.digia.connect.services.filetransfer.history-domain;
>>>>>>> type=osgi.bundle; version="[3.1.0.SNAPSHOT,3.1.0.SNAPSHOT]";
>>>>>>> resolution:=mandatory [caused by: Unable to resolve
>>>>>>> se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT:
>>>>>>> missing requirement
>>>>>>> [se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT]
>>>>>>> osgi.service; objectClass=javax.sql.DataSource; effective:=active;
>>>>>>> filter:="(osgi.jndi.service.name=jdbc/filetransferhistoryjta)"]]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.Candidates$MissingRequirementError.toException(Candidates.java:1341)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.ResolverImpl.doResolve(ResolverImpl.java:433)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:420) 
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:374) 
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:257)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:399)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1069)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.karaf.features.internal.service.FeaturesServiceImpl.lambda$doProvisionInThread$13(FeaturesServiceImpl.java:1004)
>>>>>>> ~[?:?]
>>>>>>> at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>>>>>>> at
>>>>>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
>>>>>>> ~[?:?]
>>>>>>> at java.lang.Thread.run(Thread.java:833) [?:?]
>>>>>>> Caused by: org.apache.felix.resolver.reason.ReasonException: Unable
>>>>>>> to resolve connect-filetransfer-history-db/3.1.0.SNAPSHOT: missing
>>>>>>> requirement [connect-filetransfer-history-db/3.1.0.SNAPSHOT] 
>>>>>>> osgi.identity;
>>>>>>> osgi.identity=se.digia.connect.services.filetransfer.history-domain;
>>>>>>> type=osgi.bundle; version="[3.1.0.SNAPSHOT,3.1.0.SNAPSHOT]";
>>>>>>> resolution:=mandatory [caused by: Unable to resolve
>>>>>>> se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT:
>>>>>>> missing requirement
>>>>>>> [se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT]
>>>>>>> osgi.service; objectClass=javax.sql.DataSource; effective:=active;
>>>>>>> filter:="(osgi.jndi.service.name=jdbc/filetransferhistoryjta)"]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.Candidates$MissingRequirementError.toException(Candidates.java:1341)
>>>>>>> ~[?:?]
>>>>>>> ... 12 more
>>>>>>> Caused by: org.apache.felix.resolver.reason.ReasonException: Unable
>>>>>>> to resolve
>>>>>>> se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT:
>>>>>>> missing requirement
>>>>>>> [se.digia.connect.services.filetransfer.history-domain/3.1.0.SNAPSHOT]
>>>>>>> osgi.service; objectClass=javax.sql.DataSource; effective:=active;
>>>>>>> filter:="(osgi.jndi.service.name=jdbc/filetransferhistoryjta)"
>>>>>>> at
>>>>>>> org.apache.felix.resolver.Candidates$MissingRequirementError.toException(Candidates.java:1341)
>>>>>>> ~[?:?]
>>>>>>> at
>>>>>>> org.apache.felix.resolver.Candidates$MissingRequirementError.toException(Candidates.java:1341)
>>>>>>> ~[?:?]
>>>>>>> ... 12 more
>>>>>>>
>>>>>>> I tried the "--store" option which gave me a quite large file that I
>>>>>>> unfortunately did not understand fully. Not sure if it helps any.
>>>>>>>
>>>>>>> /Bengt
>>>>>>>
>>>>>>> Den ons 9 mars 2022 kl 16:22 skrev Bengt Rodehav <be...@rodehav.com
>>>>>>> >:
>>>>>>>
>>>>>>>> OK - thanks. Will try that.
>>>>>>>>
>>>>>>>> /Bengt
>>>>>>>>
>>>>>>>> Den ons 9 mars 2022 kl 16:16 skrev Jean-Baptiste Onofré <
>>>>>>>> j...@nanthrax.net>:
>>>>>>>>
>>>>>>>>> Hi
>>>>>>>>>
>>>>>>>>> The main difference is that feature used the resolver to optimize
>>>>>>>>> the installation. Bundle installation doesn’t use the feature 
>>>>>>>>> resolver.
>>>>>>>>>
>>>>>>>>> You can use feature:install -v to get resolver output and you will
>>>>>>>>> probably see the chain found by the resolver.
>>>>>>>>>
>>>>>>>>> Regards
>>>>>>>>> JB
>>>>>>>>>
>>>>>>>>> Le mer. 9 mars 2022 à 15:22, Bengt Rodehav <be...@rodehav.com> a
>>>>>>>>> écrit :
>>>>>>>>>
>>>>>>>>>> I have a very strange problem (in Karaf 4.3.6). I use JPA and
>>>>>>>>>> have a bundle containing a persistence.xml in which a datasource is
>>>>>>>>>> referenced:
>>>>>>>>>>
>>>>>>>>>>   <jta-data-source>osgi:service/javax.sql.DataSource/(
>>>>>>>>>> osgi.jndi.service.name
>>>>>>>>>> =jdbc/filetransferhistoryjta)</jta-data-source>
>>>>>>>>>>
>>>>>>>>>> If the datasource is not available when I install this bundle
>>>>>>>>>> then I will get an error complaining that the datasource is not 
>>>>>>>>>> present.
>>>>>>>>>> The strange thing is that it seems to be dependent on how I install 
>>>>>>>>>> this
>>>>>>>>>> bundle - directly installing the bundle or doing it via a feature. 
>>>>>>>>>> In the
>>>>>>>>>> first case it works but in the latter it doesn't.
>>>>>>>>>>
>>>>>>>>>> If I first install all the prerequisites I need and then issue
>>>>>>>>>> the following command in the Karaf shell:
>>>>>>>>>>
>>>>>>>>>>   bundle:install -s
>>>>>>>>>> mvn:se.digia.connect.services.filetransfer/history-domain/3.1-SNAPSHOT
>>>>>>>>>>
>>>>>>>>>> Then it works fine. It even works if I remove the "-s" and start
>>>>>>>>>> the bundle afterwards instead.
>>>>>>>>>>
>>>>>>>>>> However, if I use the following feature:
>>>>>>>>>>
>>>>>>>>>>   <feature name="connect-filetransfer-history-db"
>>>>>>>>>> version="3.1-SNAPSHOT">
>>>>>>>>>>
>>>>>>>>>> <bundle>mvn:se.digia.connect.services.filetransfer/history-domain/3.1-SNAPSHOT</bundle>
>>>>>>>>>>   </feature>
>>>>>>>>>>
>>>>>>>>>> And then issue the following command:
>>>>>>>>>>
>>>>>>>>>>   feature:install connect-filetransfer-history-db
>>>>>>>>>>
>>>>>>>>>> Then the datasource cannot be found and the install fails. This
>>>>>>>>>> happens consistently. I am using Pax-Jdbc for exposing the 
>>>>>>>>>> datasource via
>>>>>>>>>> JNDI.
>>>>>>>>>>
>>>>>>>>>> First I thought that there might be a timing problem and that you
>>>>>>>>>> have to wait a while to get the datasource published but it doesn't 
>>>>>>>>>> seem to
>>>>>>>>>> have anything to do with that at all. I can wait 5 minutes after 
>>>>>>>>>> installing
>>>>>>>>>> the datasource. I also check with the command "jndi:names" that it is
>>>>>>>>>> published. But it still doesn't work using a feature.
>>>>>>>>>>
>>>>>>>>>> Can anyone tell me what is being done differently when I use a
>>>>>>>>>> feature compared to when I just install the bundle directly? There is
>>>>>>>>>> apparently some kind of difference.
>>>>>>>>>>
>>>>>>>>>> /Bengt
>>>>>>>>>>
>>>>>>>>>>

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