[jboss-dev-forums] [JBoss AS7 Development] - Re: AS 7 Deployment APIs

[Brian Stansberry]

Brian Stansberry [http://community.jboss.org/people/bstansberry%40jboss.com] created the discussion

"Re: AS 7 Deployment APIs"

To view the discussion, visit: http://community.jboss.org/message/561145#561145

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I want to simplify the rollback handling a bit.

Right now there are a number levels at which a user can specify that they want rollback in case of failure:

1) At the level of an individual action within a larger set of actions (Example: my plan deploys 3 apps, and if #2 fails I want it rolled back, but don't roll back #1 or #3)
2) Within a set of actions that apply to a server. If any action in the set fails, all roll back. For a standalone server, this is specified with the withGlobalRollback() call shown above.

And, for the domain controller use case only (irrelevant to standalone server case):

3) For a set of servers in a server group, whether failure on one or more trigger rollback across the group.
4) For a set of servers groups to which the same set of changes is being applied, whether failure of one server group triggers rollback of the others. (Example: multiple servers running same app, divided into multiple server groups to facilitate a rolling upgrade)
5) For a large complex plan where different sets of changes are applied to different server groups, whether failure of one set triggers rollbacks of other sets. (Example: in a multi-tier topology, roll out some deployments to server-groups in tier A, and then roll out different deployments to servers in tier B.)

I want to get rid of 1). It complicates the implementation and I don't think it adds a lot of benefit. If people want different behavior for different deployments, they can be executed separately without much trouble.
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