[jira] [Created] (AURORA-496) Modify config binding helper registration in clientv2

["Mark Chu-Carroll (JIRA)" <ji...@apache.org>]

Mark Chu-Carroll created AURORA-496:
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             Summary: Modify config binding helper registration in clientv2
                 Key: AURORA-496
                 URL: https://issues.apache.org/jira/browse/AURORA-496
             Project: Aurora
          Issue Type: Task
          Components: Client
            Reporter: Mark Chu-Carroll
            Assignee: Mark Chu-Carroll


Config binding helpers (components that add macros to the pystachio
config language) were registered in a way that used self-construction. 

In practice, binding helpers need initialization that comes from command-line parameters. With the implicit construction method, we can't provide construction parameters to the helpers.

We need to switches to an explicit construction/registration, instead
of auto-construction when the class is registered. (Interestingly, this
is the way that the documentation on the binding helpers code says that
it works!)

Instead of writing:
         FooHelper.register()

We should write:
        BindingHelper.register(FooHelper())

Which makes it possible to do:
       BindingHelper.register(FooHelper(url=bar))




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