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From: Jan Willem Janssen <janwillem.janssen@luminis.eu>
To: "users@ace.apache.org" <users@ace.apache.org>
Subject: Re: What is the ordering of the resources in the deployment package
 manifest?
Thread-Topic: What is the ordering of the resources in the deployment package
 manifest?
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Date: Tue, 25 Jul 2017 12:03:02 +0000
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Hi Guillaume,

> On 24 Jul 2017, at 17:33, Guillaume Durand <gdurand@sirlan.com> wrote:
>=20
> The order in which bundles and resources are processed by the
> DeploymentAdmin is important, e.g. a resource depending on another =
should
> be deployed after it.
> This may be well managed for osgi bundles and configuration, but when
> working with arbitrary resources, this order must be set somewhere.
> For instance, if I want to deploy wars on a servlet container, I want =
to
> deploy the associated configurations (possibly templated) before the =
wars.
>=20
> How is determined the order in which the resources are listed in the
> deployment package manifest? And how to change it?

The deployment admin spec is written specifically for a situation in =
which
an OSGi environment is to be provisioned, as such it makes a clear =
distinction
between bundle and non-bundle resources. Ordering between non-bundle =
resources
is considered as they are always processed *before* the bundles are =
started.
The idea behind this is that bundles are either the consumer of =
non-bundle
resources, or that the non-bundle resources are self-contained.

Now, ACE uses the deployment admin as primary means for installation of
deployment packages on a target. As such, ordering in non-bundle =
resources is
not guaranteed, nor changeable at the moment. It is an interesting idea, =
and
would make ACE be usable in a much generic context than it currently =
would be.

I=E2=80=99ve created <https://issues.apache.org/jira/browse/ACE-627> for =
that, and
implemented a first approach already on the trunk of ACE. So, you can =
give it
a go if you want.

Basically, you can register your own ArtifactDataHelper service that =
will be
called right before the deployment package is created. It allows you to =
tweak
the order in which the artifacts are to be included in the deployment =
package.

Hope this helps,

--
Met vriendelijke groeten | Kind regards

Jan Willem Janssen | Software Architect
+31 631 765 814


My world is something with Amdatu and Apache

Luminis Technologies
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7314 PS  Apeldoorn
+31 88 586 46 25

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