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pillar/pillar/extension.py
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extension.py
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"""Pillar extensions support.
Each Pillar extension should create a subclass of PillarExtension, which
can then be registered to the application at app creation time:
from pillar_server import PillarServer
from attract_server import AttractExtension
app = PillarServer('.')
app.load_extension(AttractExtension(), url_prefix='/attract')
app.process_extensions() # Always process extensions after the last one is loaded.
if __name__ == '__main__':
app.run('::0', 5000)
"""
import abc
class PillarExtension(object):
__metaclass__ = abc.ABCMeta
@abc.abstractproperty
def name(self):
"""The name of this extension.
The name determines the path at which Eve exposes the extension's
resources (/{extension name}/{resource name}), as well as the
MongoDB collection in which those resources are stored
({extensions name}.{resource name}).
:rtype: unicode
"""
@abc.abstractmethod
def flask_config(self):
"""Returns extension-specific defaults for the Flask configuration.
Use this to set sensible default values for configuration settings
introduced by the extension.
:rtype: dict
"""
@abc.abstractmethod
def blueprints(self):
"""Returns the list of top-level blueprints for the extension.
These blueprints will be mounted at the url prefix given to
app.load_extension().
:rtype: list of flask.Blueprint objects.
"""
@abc.abstractmethod
def eve_settings(self):
"""Returns extensions to the Eve settings.
Currently only the DOMAIN key is used to insert new resources into
Eve's configuration.
:rtype: dict
"""
@property
def template_path(self):
"""Returns the path where templates for this extension are stored.
Note that this path is not connected to any blueprint, so it is up to
the extension to provide extension-unique subdirectories.
"""
return None
@property
def static_path(self):
"""Returns the path where static files are stored.
Registers an endpoint named 'static_<extension name>', to use like:
`url_for('static_attract', filename='js/somefile.js')`
May return None, in which case the extension will not be able to serve
static files.
"""
return None
def setup_app(self, app):
"""Called during app startup, after all extensions have loaded."""