Bundle unsatisfied when using Declarative Services

[mohn3310]

Hello,

I've recently converted from using Activators to Declarative Services. I've run into an issue where all dependent services are satisfied, but the overall state of the component is still unsatisfied. Any idea how it could get into this state?

Here's the output of 'scr info':

-> scr info 9
ID: 9
Name: MyBundle
Bundle: com.myco.MyBundle (41)
State: unsatisifed
Default State: enabled
Activation: immediate
Services: com.myco.MyBundleService
Service Type: service
Reference: logService
    Satisfied: satisfied
    Service Name: org.osgi.service.log.LogService
    Multiple: single
    Optional: mandatory
    Policy: static
Reference: persistenceService
    Satisfied: satisfied
    Service Name: com.myco.persistence.PersistenceService
    Multiple: single
    Optional: mandatory
    Policy: static
Reference: httpService
    Satisfied: satisfied
    Service Name: org.osgi.service.http.HttpService
    Multiple: single
    Optional: mandatory
    Policy: static
Properties:
    component.id = 9
    component.name = MyBundle
    service.pid = MyBundle

And here's the scr-plugin generated serviceComponents.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<components xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0">
    <scr:component enabled="true" immediate="true" name="MyBundle">
        <implementation class="com.myco.impl.MyBundleServiceImpl"/>
        <service servicefactory="false">
            <provide interface="com.myco.MyBundleService"/>
        </service>
        <property name="service.pid" value="MyBundle"/>
        <reference name="logService" interface="org.osgi.service.log.LogService" cardinality="1..1" policy="static" bind="bindLogService" unbind="unbindLogService"/>
        <reference name="persistenceService" interface="com.myco.persistence.PersistenceService" cardinality="1..1" policy="static" bind="bindPersistenceService" unbind="unbindPersistenceService"/>
        <reference name="httpService" interface="org.osgi.service.http.HttpService" cardinality="1..1" policy="static" bind="bindHttpService" unbind="unbindHttpService"/>
    </scr:component>
</components>

Thanks for your help.

Mohnish

[Felix Meschberger-2]

Hi,

Are you using the latest release of Apache Felix Declarative Services ?
In this case, you might be hit by FELIX-1178 [1]

Your options are reverting to the previous release or upgrading to a
trunk build.

We are close to a new release of SCR (we have a small number of issues
open).

Regards
Felix

[1] https://issues.apache.org/jira/browse/FELIX-1178

mohn3310 schrieb:

> Hello,
>
> I've recently converted from using Activators to Declarative Services. I've
> run into an issue where all dependent services are satisfied, but the
> overall state of the component is still unsatisfied. Any idea how it could
> get into this state?
>
> Here's the output of 'scr info':
>
> -> scr info 9
> ID: 9
> Name: MyBundle
> Bundle: com.myco.MyBundle (41)
> State: unsatisifed
> Default State: enabled
> Activation: immediate
> Services: com.myco.MyBundleService
> Service Type: service
> Reference: logService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.log.LogService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: persistenceService
>     Satisfied: satisfied
>     Service Name: com.myco.persistence.PersistenceService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: httpService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.http.HttpService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Properties:
>     component.id = 9
>     component.name = MyBundle
>     service.pid = MyBundle
>
> And here's the scr-plugin generated serviceComponents.xml file:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <components xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0">
>     <scr:component enabled="true" immediate="true" name="MyBundle">
>         <implementation class="com.myco.impl.MyBundleServiceImpl"/>
>         <service servicefactory="false">
>             <provide interface="com.myco.MyBundleService"/>
>         </service>
>         <property name="service.pid" value="MyBundle"/>
>         <reference name="logService"
> interface="org.osgi.service.log.LogService" cardinality="1..1"
> policy="static" bind="bindLogService" unbind="unbindLogService"/>
>         <reference name="persistenceService"
> interface="com.myco.persistence.PersistenceService" cardinality="1..1"
> policy="static" bind="bindPersistenceService"
> unbind="unbindPersistenceService"/>
>         <reference name="httpService"
> interface="org.osgi.service.http.HttpService" cardinality="1..1"
> policy="static" bind="bindHttpService" unbind="unbindHttpService"/>
>     </scr:component>
> </components>
>
> Thanks for your help.
>
> Mohnish

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[mohn3310]

Hi Felix,

Thanks for your response.

We're on version 1.0.8 of the "Apache Felix Declarative Services" bundle. I reverted to version 1.0.6 and am still running into the same issue.

The strange thing is we have two bundles with pretty much the extact structure (using DS) and one of them works whereas this one doesn't. I've put log statements to std out in the bind/unbind methods and I never see it executed in this one, but in the other one I do. And this is consistent behaviour.

Any other ideas as to why it might be behaving this way? I've doubled checked to see if I've missed anything, but nothing obvious is showing up.

Thanks,
Mohnish

Felix Meschberger-2 wrote:

Hi,

Are you using the latest release of Apache Felix Declarative Services ?
In this case, you might be hit by FELIX-1178 [1]

Your options are reverting to the previous release or upgrading to a
trunk build.

We are close to a new release of SCR (we have a small number of issues
open).

Regards
Felix

[1] https://issues.apache.org/jira/browse/FELIX-1178

mohn3310 schrieb:
> Hello,
>
> I've recently converted from using Activators to Declarative Services. I've
> run into an issue where all dependent services are satisfied, but the
> overall state of the component is still unsatisfied. Any idea how it could
> get into this state?
>
> Here's the output of 'scr info':
>
> -> scr info 9
> ID: 9
> Name: MyBundle
> Bundle: com.myco.MyBundle (41)
> State: unsatisifed
> Default State: enabled
> Activation: immediate
> Services: com.myco.MyBundleService
> Service Type: service
> Reference: logService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.log.LogService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: persistenceService
>     Satisfied: satisfied
>     Service Name: com.myco.persistence.PersistenceService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: httpService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.http.HttpService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Properties:
>     component.id = 9
>     component.name = MyBundle
>     service.pid = MyBundle
>
> And here's the scr-plugin generated serviceComponents.xml file:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <components xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0">
>     <scr:component enabled="true" immediate="true" name="MyBundle">
>         <implementation class="com.myco.impl.MyBundleServiceImpl"/>
>         <service servicefactory="false">
>             <provide interface="com.myco.MyBundleService"/>
>         </service>
>         <property name="service.pid" value="MyBundle"/>
>         <reference name="logService"
> interface="org.osgi.service.log.LogService" cardinality="1..1"
> policy="static" bind="bindLogService" unbind="unbindLogService"/>
>         <reference name="persistenceService"
> interface="com.myco.persistence.PersistenceService" cardinality="1..1"
> policy="static" bind="bindPersistenceService"
> unbind="unbindPersistenceService"/>
>         <reference name="httpService"
> interface="org.osgi.service.http.HttpService" cardinality="1..1"
> policy="static" bind="bindHttpService" unbind="unbindHttpService"/>
>     </scr:component>
> </components>
>
> Thanks for your help.
>
> Mohnish

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[mohn3310]

Hi,

Just thought to post an update on this.

It does look like a Felix specific issue. Tested with both Declarative Service bundle versions - 1.0.6 and 1.0.8. Both report the bundles to be in the 'unsatisfied' state. I then tried this on equinox and it seems to work as expected.

I'll give it a shot with the scr v1.2.0 when it's out.

Thanks for your help.

Mohnish


Hi Felix,

Thanks for your response.

We're on version 1.0.8 of the "Apache Felix Declarative Services" bundle. I reverted to version 1.0.6 and am still running into the same issue.

The strange thing is we have two bundles with pretty much the extact structure (using DS) and one of them works whereas this one doesn't. I've put log statements to std out in the bind/unbind methods and I never see it executed in this one, but in the other one I do. And this is consistent behaviour.

Any other ideas as to why it might be behaving this way? I've doubled checked to see if I've missed anything, but nothing obvious is showing up.

Thanks,
Mohnish

Felix Meschberger-2 wrote:

Hi,

Are you using the latest release of Apache Felix Declarative Services ?
In this case, you might be hit by FELIX-1178 [1]

Your options are reverting to the previous release or upgrading to a
trunk build.

We are close to a new release of SCR (we have a small number of issues
open).

Regards
Felix

[1] https://issues.apache.org/jira/browse/FELIX-1178

mohn3310 schrieb:
> Hello,
>
> I've recently converted from using Activators to Declarative Services. I've
> run into an issue where all dependent services are satisfied, but the
> overall state of the component is still unsatisfied. Any idea how it could
> get into this state?
>
> Here's the output of 'scr info':
>
> -> scr info 9
> ID: 9
> Name: MyBundle
> Bundle: com.myco.MyBundle (41)
> State: unsatisifed
> Default State: enabled
> Activation: immediate
> Services: com.myco.MyBundleService
> Service Type: service
> Reference: logService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.log.LogService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: persistenceService
>     Satisfied: satisfied
>     Service Name: com.myco.persistence.PersistenceService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: httpService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.http.HttpService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Properties:
>     component.id = 9
>     component.name = MyBundle
>     service.pid = MyBundle
>
> And here's the scr-plugin generated serviceComponents.xml file:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <components xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0">
>     <scr:component enabled="true" immediate="true" name="MyBundle">
>         <implementation class="com.myco.impl.MyBundleServiceImpl"/>
>         <service servicefactory="false">
>             <provide interface="com.myco.MyBundleService"/>
>         </service>
>         <property name="service.pid" value="MyBundle"/>
>         <reference name="logService"
> interface="org.osgi.service.log.LogService" cardinality="1..1"
> policy="static" bind="bindLogService" unbind="unbindLogService"/>
>         <reference name="persistenceService"
> interface="com.myco.persistence.PersistenceService" cardinality="1..1"
> policy="static" bind="bindPersistenceService"
> unbind="unbindPersistenceService"/>
>         <reference name="httpService"
> interface="org.osgi.service.http.HttpService" cardinality="1..1"
> policy="static" bind="bindHttpService" unbind="unbindHttpService"/>
>     </scr:component>
> </components>
>
> Thanks for your help.
>
> Mohnish

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[Felix Meschberger-2]

Hi,

Just a follow up to the list ...

Mohnish and I have been trying to track this issue off list. After he
cleared his bundle cache and restarted the framework, the issue went away.

Its hard to tell, what was going on there, maybe an old bundle lying
around or such. For now the problem seems to have gone ..

Regards
Felix

mohn3310 schrieb:

> Hello,
>
> I've recently converted from using Activators to Declarative Services. I've
> run into an issue where all dependent services are satisfied, but the
> overall state of the component is still unsatisfied. Any idea how it could
> get into this state?
>
> Here's the output of 'scr info':
>
> -> scr info 9
> ID: 9
> Name: MyBundle
> Bundle: com.myco.MyBundle (41)
> State: unsatisifed
> Default State: enabled
> Activation: immediate
> Services: com.myco.MyBundleService
> Service Type: service
> Reference: logService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.log.LogService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: persistenceService
>     Satisfied: satisfied
>     Service Name: com.myco.persistence.PersistenceService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Reference: httpService
>     Satisfied: satisfied
>     Service Name: org.osgi.service.http.HttpService
>     Multiple: single
>     Optional: mandatory
>     Policy: static
> Properties:
>     component.id = 9
>     component.name = MyBundle
>     service.pid = MyBundle
>
> And here's the scr-plugin generated serviceComponents.xml file:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <components xmlns:scr="http://www.osgi.org/xmlns/scr/v1.0.0">
>     <scr:component enabled="true" immediate="true" name="MyBundle">
>         <implementation class="com.myco.impl.MyBundleServiceImpl"/>
>         <service servicefactory="false">
>             <provide interface="com.myco.MyBundleService"/>
>         </service>
>         <property name="service.pid" value="MyBundle"/>
>         <reference name="logService"
> interface="org.osgi.service.log.LogService" cardinality="1..1"
> policy="static" bind="bindLogService" unbind="unbindLogService"/>
>         <reference name="persistenceService"
> interface="com.myco.persistence.PersistenceService" cardinality="1..1"
> policy="static" bind="bindPersistenceService"
> unbind="unbindPersistenceService"/>
>         <reference name="httpService"
> interface="org.osgi.service.http.HttpService" cardinality="1..1"
> policy="static" bind="bindHttpService" unbind="unbindHttpService"/>
>     </scr:component>
> </components>
>
> Thanks for your help.
>
> Mohnish

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