Resolution to TUSCANY-1332 assumes a closed top-level composite that does not
support addition of new components
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Key: TUSCANY-1346
URL: https://issues.apache.org/jira/browse/TUSCANY-1346
Project: Tuscany
Issue Type: Bug
Components: Java SCA Assembly Model, Java SCA Core Runtime, Java SCA
Embedded Runtime
Affects Versions: Java-SCA-0.90, Java-SCA-0.91
Reporter: Matthew Sykes
The resolution to TUSCANY-1332 involved exploitation of the composite include
function to "include" all known deployable composites into the domain such that
the components contained within the deployable composites would be wired
together when the domain level composite was activated. While this resolved
the issues of wiring across multiple composites contained within different
contributions, this approach requires that the system know of all composites
that may be part of the domain at the time the domain is activated.
When embedding Tuscany in a server runtime, however, deployment and activation
of composites may occur after the domain is activated. With the current
implementation that is contained with EmbeddedSCADomain, runtimes that consume
Tuscany would have to stop and restart the domain composite to deploy and
activate new components and their services. While this may be appropriate for
small systems, it's not workable in complex environments.
I believe Tuscany needs a wiring and activation model that is more dynamic such
that components can be added to (or removed from) the domain and wired after
the domain composite was initially activated. This flexibility would have
implications to the way wiring is done and how multiplicity is validated as the
shape of the domain changes.
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