[JBoss JIRA] (AS7-6964) Recursive expression resolution

Monday, 22 April 2013

    [
https://issues.jboss.org/browse/AS7-6964?page=com.atlassian.jira.plugin.s...
] 

Jess Sightler commented on AS7-6964:
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I have added an initial pass at an implementation (with the above feature missing) in
order to solicit some feedback.

Basically, variable resolution happens in two places:
 - The model node itself (System Property and Environment Variable resolution)
 - The ExpressionResolver (vault)

I have worked around this by moving the call to node.resolve() into the
resolveExpressionsRecursively itself for the moment. I don't really see a way around
this with the current design, but it doesn't seem ideal to me.

Suggestions?

...
 Recursive expression resolution
 -------------------------------

                 Key: AS7-6964
                 URL: https://issues.jboss.org/browse/AS7-6964
             Project: Application Server 7
          Issue Type: Feature Request
          Components: Domain Management
            Reporter: Brian Stansberry
            Assignee: Jess Sightler

 When resolving an expression, keep resolving until the output of the resolution matches
the input.
 Use case:
 ${sys.prop.with.host.specific.value}
 resolves to
 ${VAULT::xxxxx}
 which resolves to
 thesecret
 Basically, the main mechanism for customizing domain-level configs on a per-host basis is
to use expressions and use different values on each host. But this breaks down when a
vault expression is added to the mix. 
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