Hi John,

Thanks for the quick response!

We are using feature subsystems. The collection of feature subsystems is
our application. Your rewording of our deployment scenario is correct. The
fragment-host header is indeed only present in the fragment's bundle
manifest and therefore only in the subsystem that does not contain the
fragment-host.

Actually, we made a small mistake when describing our deployment scenario.
The situation where the issue occurs is the following:
1) Install the fragment-host subsystem
2) Start the fragment-host subsystem
3) Install the fragment subsystem
4) Start the fragment subsystem -> Error when resolving fragment.

If both subsystems are installed before starting the fragment-host
subsystem, the error does not occur (steps: 1-3-2-4).
If a refresh is triggered after installing the fragment subsystem is
installed, the error does not occur either (steps: 1-2-3-refresh-4)

Subsystems are started synchronously.
With 'refresh' I indeed mean an FrameworkWiring.refreshBundles triggered
from the GoGo shell with a felix:update and felix:refresh.

Best regards,
Wouter



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2016-02-01 14:02 GMT+01:00 John Ross <[email protected]>:

> I have a few questions regarding your scenario. First, what type of
> subsystems are these? I think you work only with applications? Second, I'm
> not sure I understand your deployment description. Please tell me if the
> following rewording is accurate.
>
> 1. We install the application containing the host bundle. (Note that the
> Fragment-Host header would appear in the fragment bundle's manifest, not
> the host bundle's.)
> 2. We install one of the applications containing a fragment bundle with a
> Fragment-Host header in the bundle manifest that references the host bundle
> from step one.
> 3. We start the application containing the host bundle first, followed by
> the one containing the fragment bundle.
>
> Third, as the reworded third step implies, are you starting the subsystems
> in the correct order? Do you start them asynchronously? Fourth, what's the
> relationship between the subsystem containing the host bundle and the ones
> containing the fragments? Are the latter children of the former? Finally,
> what do you mean by "refresh"? Do you mean you're calling
> FrameworkWiring.refreshBundles?
>
> On Mon, Feb 1, 2016 at 3:40 AM, Wouter Bancken <[email protected]>
> wrote:
>
>> Hi,
>>
>> We are currently deploying multiple subsystems in our application that
>> all provide a part of the UI of our application. The bundles responsible
>> for serving the html/js/css files are all fragments to the same
>> fragment-host which is in one of our subsystems. This setup is causing
>> issues when deploying our application.
>>
>> *Deployment:*
>> 1. We install the subsystem containing the fragment-host.
>> 2. We install one of the subsystems containing a fragment to this host.
>> 3. We start both subsystems but we are unable to resolve the fragment.
>>
>> This is fixed if we refresh the fragment-host right before starting the
>> subsystems (after step 2, before step 3).
>>
>> This refresh will be part of our deployment setup but we were wondering
>> if this should have been part of the Aries subsystems framework. Should
>> Aries automatically refresh the fragment-host when installing a new
>> fragment?
>>
>> Best regards,
>> Wouter
>>
>
>

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