At 01:06 AM 12/3/2009 +0100, Andrew Dalke wrote:
Hi all,
I'm working with the Akara project. It contains a web server. The
server loads extensions from a special directory (let's say
"$AKARA" for now). An extension can register handlers for URLs. An
example extension might look like:
installs to $AKARA/spam_extension.py
(note: only .py files are supported; not even .pyc files)
=========================
from akara.services import simple_service
import my_spam # This is part of the distribution, and gets put in
site-packages
@simple_service("GET", "http://vikings.protocol.id/";)
def vikings(say=my_spam.DEFAULT_TEXT):
return my_spam.vikings(say)
=========================
We want people to be able to distribute Akara plugins and install
via setup.py. Ideally I would like to say:
from distutils.core import setup
from akara.distutils ... I'm not sure what here ...
setup(name="Spam services",
package="my_spam",
akara_extensions=["spam_extension.py"]
)
To clarify, the development/distribution package looks like:
$PACKAGE/setup.py
$PACKAGE/README
$PACKAGE/spam_extensions.py
$PACKAGE/my_spam/__init__.py
$PACKAGE/my_spam/dramatis_personae.py
$PACKAGE/my_spam/cafe.py
and $PACKAGE/spam_extensions.py goes to $AKARA/spam_extensions.py
while $PACKAGE/my_spam is copied to site-packages.
The installation does not need to byte-compile spam_extension.py.
It should also include spam_extension.py in any distribution that it makes.
I looked through the documentation and searched for existing
examples, but found nothing which does this. The plugins I found
used entry_points, and that's an architecture change which I don't
think is appropriate for us.
It wouldn't be so much of a change as an addition. You'd just add
code like this, either before or after your existing loop over the
extensions directory:
for entry_point in pkg_resources.iter_entry_points('akara'):
extension_module = entry_point.load()
# do stuff with extension_module
And then users would declare their extensions for installation like this:
setup(name="Spam services",
packages=["my_spam"],
py_modules=["spam_extension"],
entry_points={'akara':'Spam services=spam_extension'} #
arbitrary name=module
)
Everything else would be the same as you described above with respect
to layout, except:
1. the spam_extension module would be installed in site-packages
2. It wouldn't need to be a top-level module (i.e., it could be a
module in the package)
3. You don't need any custom distutils extensions, except what you
get via setuptools or Distribute.
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