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From Ran Ziv <>
Subject Re: Query related to substitution mapping
Date Thu, 01 Jun 2017 16:30:54 GMT
i agree for the most part, although I don't see it as part of the
instantiation phase refactoring, but rather as a completely separate
feature which I'd like us to work on in the near future.

On Thu, Jun 1, 2017 at 7:27 PM, Tal Liron <> wrote:

> Your expectations are reasonable: that ARIA would look at all of its
> current service instances and try to match reqs-and-caps with
> substitutions.
> However, we are a bit far from implementing this. Currently, ARIA only
> knows how to match reqs-and-caps within the service.
> Also, this feature has to be planned rather carefully: in some cases the
> user will not want such automatic matching to happen with services that
> just happen to exist in ARIA's db. I think this a great place to introduce
> a new Policy that would allow the user to configure exactly how matching
> would happen: should the matching prefer external substitutions over
> internal nodes? are there limited to how many could be matched? (like the
> "occurrences" definition in Capability) should matching only happen with
> services of a certain csar/template? etc.
> ​We are planning some work ahead to refactor the way we instantiate
> services, and I think at least some parts of this feature should be
> included in that.

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