The DUPs in each Phase are executed in the start method of an MSC Service that represents that Phase for that deployment.[1] The start method executes the DUPs associated with the phase and then installs the service for the next phase.

So, all DUPs for PARSE will have run before any DEPENDENCIES DUPs are run.

[1] https://github.com/wildfly/wildfly-core/blob/master/server/src/main/java/org/jboss/as/server/deployment/DeploymentUnitPhaseService.java#L85

On Tue, Sep 18, 2018 at 11:01 AM, Peter Palaga <ppalaga@redhat.com> wrote:

Hi *,

I cannot find any info about what (if any) are the guarantees for
ordering and exit of DeploymentUnitProcessors (DUPs) in case of an EAR
that contains multiple WARs.

I have a situation like this: MyDUP1 is registered for Phase.PARSE and
MyDup2 is registered for Phase.DEPENDENCIES.
I can see from the logs that MyDUP1.deploy(ear),
MyDUP1.deploy(ear.war1), MyDUP1.deploy(war2), etc. are executed by
distinct threads which is perfectly OK.
I'd like to know if there is any guarantee that MyDup2.deploy(*)
observes the completion of MyDUP1.deploy(ear), MyDUP1.deploy(ear.war1),
MyDUP1.deploy(ear.war2), etc.?

MyDUP1.deploy() collects some info from the EAR and the WARs and stores
it as an attachment of the DeploymentUnit. MyDup2.deploy() is supposed
to read that attachment and so it is important that the info is complete
when MyDup2.deploy() reads it.

Thanks,

-- Peter
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Brian Stansberry

Manager, Senior Principal Software Engineer

Red Hat