On 15/04/2011, at 3:09 AM, Alex Clark wrote:
Hi,
On 3/25/11 11:45 AM, Wichert Akkerman wrote:
On 2011-3-25 16:03, Alex Clark wrote:
- Ask for feedback on the issue of making collective.transmogrifier
listen for a "transmogrify" target, coming from blueprints who add
an
entry point like:
setup(
...
entry_points="""
[z3c.autoinclude.plugin]
target = transmogrify
"""
)
That would allow a buildout[1] like this to work:
[mr.migrator]
recipe = mr.migrator
pipeline = pipeline.cfg
eggs =
transmogrify.filesystem
transmogrify.ploneremote
transmogrify.pathsorter
transmogrify.printer
Otherwise, we'll need to make mr.migrator accept the ZCML
parameter, and
end users will have to list their blueprints twice:
Why not use entrypoints instead instead of relying on zcml in
between?
That way you don't need to list them twice, and you get discovery
directly from setuptools.
OK I took a stab at this here:
-
http://dev.plone.org/collective/changeset/237189/collective.transmogrifier/branches/aclark-mr-migrator-compat
Which works OK with packages that declare entry points like the one
here:
-
http://dev.plone.org/collective/changeset/237623/transmogrify.filesystem/branches/aclark-mr-migrator-compat
This works because there is ZCML in that package and
c.transmogrifier calls zcml.load on it.
It looks like you have two systems for registration which do the same
thing. The autoinclude loads zcml and the special
collective.transmogrifier entrypoint also loads zcml. Wasn't the idea
of the special collective.transmogrifier entrypoint to bypass zcml
alltogeather, ie be an alternate registration syntax by itself so zcml
wasn't needed? ie somthing like
for object in iter_entry_points(group='collective.transmogrifier',
name=None):
object.load()
and object.load() is going to call a method the plugin author has
provided to call register all they blueprints without zcml
see
http://wiki.pylonshq.com/display/pylonscookbook/Using+Entry+Points+to+Write+Plugins
But I wonder how I can make it work for blueprints like this one:
-
http://dev.plone.org/collective/browser/collective.transmogrifier/trunk/src/collective/transmogrifier/sections/tests.py#L204
Where the code is loaded via provideUtility…
Do I need to make a "special exception" to handle this case?
if that one was meant to be used outside of those internal tests then
it would have been registered with zcml. So it's not meant to be used
by others.
Thanks for any pointers,
Alex
Wichert.
--
Alex Clark · http://aclark.net/training
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