import mimetypes
import logging
from pylons import response
from paste.httpheaders import CACHE_CONTROL, EXPIRES
from ming.utils import LazyProperty
def cache_forever():
headers = [
(k,v) for k,v in response.headers.items()
if k.lower() not in ('pragma', 'cache-control') ]
delta = CACHE_CONTROL.apply(
headers,
public=True,
max_age=60*60*24*365)
EXPIRES.update(headers, delta=delta)
response.headers.pop('cache-control', None)
response.headers.pop('pragma', None)
response.headers.update(headers)
def guess_mime_type(filename):
'''Guess MIME type based on filename.
Applies heuristics, tweaks, and defaults in centralized manner.
'''
# Consider changing to strict=False
content_type = mimetypes.guess_type(filename, strict=True)
if content_type[0]:
content_type = content_type[0]
else:
content_type = 'application/octet-stream'
return content_type
class lazy_logger(object):
'''Lazy instatiation of a logger, to ensure that it does not get
created before logging is configured (which would make it disabled)'''
def __init__(self, name):
self._name = name
@LazyProperty
def _logger(self):
return logging.getLogger(self._name)
def __getattr__(self, name):
if name.startswith('_'): raise AttributeError, name
return getattr(self._logger, name)