You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.9 KiB
91 lines
2.9 KiB
"""
|
|
Mako Integration
|
|
----------------
|
|
|
|
dogpile.cache includes a `Mako <http://www.makotemplates.org>`_ plugin
|
|
that replaces `Beaker <http://beaker.groovie.org>`_
|
|
as the cache backend.
|
|
Setup a Mako template lookup using the "dogpile.cache" cache implementation
|
|
and a region dictionary::
|
|
|
|
from dogpile.cache import make_region
|
|
from mako.lookup import TemplateLookup
|
|
|
|
my_regions = {
|
|
"local":make_region().configure(
|
|
"dogpile.cache.dbm",
|
|
expiration_time=360,
|
|
arguments={"filename":"file.dbm"}
|
|
),
|
|
"memcached":make_region().configure(
|
|
"dogpile.cache.pylibmc",
|
|
expiration_time=3600,
|
|
arguments={"url":["127.0.0.1"]}
|
|
)
|
|
}
|
|
|
|
mako_lookup = TemplateLookup(
|
|
directories=["/myapp/templates"],
|
|
cache_impl="dogpile.cache",
|
|
cache_args={
|
|
'regions':my_regions
|
|
}
|
|
)
|
|
|
|
To use the above configuration in a template, use the ``cached=True``
|
|
argument on any Mako tag which accepts it, in conjunction with the
|
|
name of the desired region as the ``cache_region`` argument::
|
|
|
|
<%def name="mysection()" cached="True" cache_region="memcached">
|
|
some content that's cached
|
|
</%def>
|
|
|
|
|
|
"""
|
|
from mako.cache import CacheImpl
|
|
|
|
|
|
class MakoPlugin(CacheImpl):
|
|
"""A Mako ``CacheImpl`` which talks to dogpile.cache."""
|
|
|
|
def __init__(self, cache):
|
|
super(MakoPlugin, self).__init__(cache)
|
|
try:
|
|
self.regions = self.cache.template.cache_args['regions']
|
|
except KeyError:
|
|
raise KeyError(
|
|
"'cache_regions' argument is required on the "
|
|
"Mako Lookup or Template object for usage "
|
|
"with the dogpile.cache plugin.")
|
|
|
|
def _get_region(self, **kw):
|
|
try:
|
|
region = kw['region']
|
|
except KeyError:
|
|
raise KeyError(
|
|
"'cache_region' argument must be specified with 'cache=True'"
|
|
"within templates for usage with the dogpile.cache plugin.")
|
|
try:
|
|
return self.regions[region]
|
|
except KeyError:
|
|
raise KeyError("No such region '%s'" % region)
|
|
|
|
def get_and_replace(self, key, creation_function, **kw):
|
|
expiration_time = kw.pop("timeout", None)
|
|
return self._get_region(**kw).get_or_create(
|
|
key, creation_function,
|
|
expiration_time=expiration_time)
|
|
|
|
def get_or_create(self, key, creation_function, **kw):
|
|
return self.get_and_replace(key, creation_function, **kw)
|
|
|
|
def put(self, key, value, **kw):
|
|
self._get_region(**kw).put(key, value)
|
|
|
|
def get(self, key, **kw):
|
|
expiration_time = kw.pop("timeout", None)
|
|
return self._get_region(**kw).get(key, expiration_time=expiration_time)
|
|
|
|
def invalidate(self, key, **kw):
|
|
self._get_region(**kw).delete(key)
|