зеркало из https://github.com/mozilla/nuggets.git
mmmm goodies
This commit is contained in:
Jeff Balogh
Коммит
d5e07c223c
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MANIFEST
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Copyright (c) 2010, Mozilla Foundation
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All rights reserved.
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||||
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||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright notice,
|
||||
this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the name of the Mozilla Foundation nor the names of its contributors
|
||||
may be used to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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||||
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|||
These is a collection of little utilities that make our lives easier writing
|
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websites with Django.
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|
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They depend on things like Django and celery, but each module stands on its
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own. Look to the top of each module for a little docstring.
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|
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|||
"""
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||||
Wrapper for celery.task.Task that catches and logs errors.
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||||
"""
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import logging
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import functools
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import celery.decorators
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import celery.task
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log = logging.getLogger('z.celery')
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class Task(celery.task.Task):
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|
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@classmethod
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||||
def apply_async(self, args=None, kwargs=None, **options):
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try:
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return super(Task, self).apply_async(args, kwargs, **options)
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except Exception, e:
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log.error('CELERY FAIL: %s' % e)
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||||
|
||||
|
||||
def task(*args, **kw):
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# Force usage of our Task subclass.
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kw['base'] = Task
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||||
wrapper = celery.decorators.task(**kw)
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||||
if args:
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return wrapper(*args)
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else:
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return wrapper
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|
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"""
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Replacement for django.core.context_processors.csrf that escapes the CSRF
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token.
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"""
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from django.core import context_processors
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from django.utils import functional, html
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def csrf(request):
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# Use lazy() because getting the token triggers Set-Cookie: csrftoken.
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def _get_val():
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token = context_processors.csrf(request)['csrf_token']
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# This should be an md5 string so any broken Unicode is an attacker.
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try:
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return html.escape(unicode(token))
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except UnicodeDecodeError:
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return u''
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return {'csrf_token': functional.lazy(_get_val, unicode)()}
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|
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@ -0,0 +1,532 @@
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"""
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Code to configure logging using dictionaries, as per PEP 391.
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http://bitbucket.org/vinay.sajip/dictconfig/src/tip/src/dictconfig.py
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"""
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import logging.handlers
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import re
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import sys
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import types
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IDENTIFIER = re.compile('^[a-z_][a-z0-9_]*$', re.I)
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|
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def valid_ident(s):
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m = IDENTIFIER.match(s)
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if not m:
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raise ValueError('Not a valid Python identifier: %r' % s)
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return True
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#
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# This function is defined in logging only in recent versions of Python
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#
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try:
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from logging import _checkLevel
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except ImportError:
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def _checkLevel(level):
|
||||
if isinstance(level, int):
|
||||
rv = level
|
||||
elif str(level) == level:
|
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if level not in logging._levelNames:
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raise ValueError('Unknown level: %r' % level)
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rv = logging._levelNames[level]
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else:
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raise TypeError('Level not an integer or a '
|
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'valid string: %r' % level)
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return rv
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|
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# The ConvertingXXX classes are wrappers around standard Python containers,
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# and they serve to convert any suitable values in the container. The
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# conversion converts base dicts, lists and tuples to their wrapped
|
||||
# equivalents, whereas strings which match a conversion format are converted
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# appropriately.
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#
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# Each wrapper should have a configurator attribute holding the actual
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||||
# configurator to use for conversion.
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|
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class ConvertingDict(dict):
|
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"""A converting dictionary wrapper."""
|
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|
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def __getitem__(self, key):
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value = dict.__getitem__(self, key)
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result = self.configurator.convert(value)
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#If the converted value is different, save for next time
|
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if value is not result:
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self[key] = result
|
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if type(result) in (ConvertingDict, ConvertingList,
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ConvertingTuple):
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result.parent = self
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result.key = key
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return result
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|
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def get(self, key, default=None):
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value = dict.get(self, key, default)
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result = self.configurator.convert(value)
|
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#If the converted value is different, save for next time
|
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if value is not result:
|
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self[key] = result
|
||||
if type(result) in (ConvertingDict, ConvertingList,
|
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ConvertingTuple):
|
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result.parent = self
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result.key = key
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return result
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|
||||
def pop(self, key, default=None):
|
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value = dict.pop(self, key, default)
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result = self.configurator.convert(value)
|
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if value is not result:
|
||||
if type(result) in (ConvertingDict, ConvertingList,
|
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ConvertingTuple):
|
||||
result.parent = self
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result.key = key
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return result
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|
||||
class ConvertingList(list):
|
||||
"""A converting list wrapper."""
|
||||
def __getitem__(self, key):
|
||||
value = list.__getitem__(self, key)
|
||||
result = self.configurator.convert(value)
|
||||
#If the converted value is different, save for next time
|
||||
if value is not result:
|
||||
self[key] = result
|
||||
if type(result) in (ConvertingDict, ConvertingList,
|
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ConvertingTuple):
|
||||
result.parent = self
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||||
result.key = key
|
||||
return result
|
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|
||||
def pop(self, idx=-1):
|
||||
value = list.pop(self, idx)
|
||||
result = self.configurator.convert(value)
|
||||
if value is not result:
|
||||
if type(result) in (ConvertingDict, ConvertingList,
|
||||
ConvertingTuple):
|
||||
result.parent = self
|
||||
return result
|
||||
|
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class ConvertingTuple(tuple):
|
||||
"""A converting tuple wrapper."""
|
||||
def __getitem__(self, key):
|
||||
value = tuple.__getitem__(self, key)
|
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result = self.configurator.convert(value)
|
||||
if value is not result:
|
||||
if type(result) in (ConvertingDict, ConvertingList,
|
||||
ConvertingTuple):
|
||||
result.parent = self
|
||||
result.key = key
|
||||
return result
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||||
|
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class BaseConfigurator(object):
|
||||
"""
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The configurator base class which defines some useful defaults.
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||||
"""
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CONVERT_PATTERN = re.compile(r'^(?P<prefix>[a-z]+)://(?P<suffix>.*)$')
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WORD_PATTERN = re.compile(r'^\s*(\w+)\s*')
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DOT_PATTERN = re.compile(r'^\.\s*(\w+)\s*')
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INDEX_PATTERN = re.compile(r'^\[\s*(\w+)\s*\]\s*')
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DIGIT_PATTERN = re.compile(r'^\d+$')
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||||
value_converters = {
|
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'ext' : 'ext_convert',
|
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'cfg' : 'cfg_convert',
|
||||
}
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|
||||
# We might want to use a different one, e.g. importlib
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||||
importer = __import__
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|
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def __init__(self, config):
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self.config = ConvertingDict(config)
|
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self.config.configurator = self
|
||||
|
||||
def resolve(self, s):
|
||||
"""
|
||||
Resolve strings to objects using standard import and attribute
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syntax.
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"""
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name = s.split('.')
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used = name.pop(0)
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||||
found = self.importer(used)
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||||
for frag in name:
|
||||
used += '.' + frag
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||||
try:
|
||||
found = getattr(found, frag)
|
||||
except AttributeError:
|
||||
self.importer(used)
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||||
found = getattr(found, frag)
|
||||
return found
|
||||
|
||||
def ext_convert(self, value):
|
||||
"""Default converter for the ext:// protocol."""
|
||||
return self.resolve(value)
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||||
def cfg_convert(self, value):
|
||||
"""Default converter for the cfg:// protocol."""
|
||||
rest = value
|
||||
m = self.WORD_PATTERN.match(rest)
|
||||
if m is None:
|
||||
raise ValueError("Unable to convert %r" % value)
|
||||
else:
|
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rest = rest[m.end():]
|
||||
d = self.config[m.groups()[0]]
|
||||
#print d, rest
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||||
while rest:
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m = self.DOT_PATTERN.match(rest)
|
||||
if m:
|
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d = d[m.groups()[0]]
|
||||
else:
|
||||
m = self.INDEX_PATTERN.match(rest)
|
||||
if m:
|
||||
idx = m.groups()[0]
|
||||
if not self.DIGIT_PATTERN.match(idx):
|
||||
d = d[idx]
|
||||
else:
|
||||
try:
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||||
n = int(idx) # try as number first (most likely)
|
||||
d = d[n]
|
||||
except TypeError:
|
||||
d = d[idx]
|
||||
if m:
|
||||
rest = rest[m.end():]
|
||||
else:
|
||||
raise ValueError('Unable to convert '
|
||||
'%r at %r' % (value, rest))
|
||||
#rest should be empty
|
||||
return d
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||||
|
||||
def convert(self, value):
|
||||
"""
|
||||
Convert values to an appropriate type. dicts, lists and tuples are
|
||||
replaced by their converting alternatives. Strings are checked to
|
||||
see if they have a conversion format and are converted if they do.
|
||||
"""
|
||||
if not isinstance(value, ConvertingDict) and isinstance(value, dict):
|
||||
value = ConvertingDict(value)
|
||||
value.configurator = self
|
||||
elif not isinstance(value, ConvertingList) and isinstance(value, list):
|
||||
value = ConvertingList(value)
|
||||
value.configurator = self
|
||||
elif not isinstance(value, ConvertingTuple) and\
|
||||
isinstance(value, tuple):
|
||||
value = ConvertingTuple(value)
|
||||
value.configurator = self
|
||||
elif isinstance(value, basestring): # str for py3k
|
||||
m = self.CONVERT_PATTERN.match(value)
|
||||
if m:
|
||||
d = m.groupdict()
|
||||
prefix = d['prefix']
|
||||
converter = self.value_converters.get(prefix, None)
|
||||
if converter:
|
||||
suffix = d['suffix']
|
||||
converter = getattr(self, converter)
|
||||
value = converter(suffix)
|
||||
return value
|
||||
|
||||
def configure_custom(self, config):
|
||||
"""Configure an object with a user-supplied factory."""
|
||||
c = config.pop('()')
|
||||
if not hasattr(c, '__call__') and hasattr(types, 'ClassType') and type(c) != types.ClassType:
|
||||
c = self.resolve(c)
|
||||
props = config.pop('.', None)
|
||||
# Check for valid identifiers
|
||||
kwargs = dict([(k, config[k]) for k in config if valid_ident(k)])
|
||||
result = c(**kwargs)
|
||||
if props:
|
||||
for name, value in props.items():
|
||||
setattr(result, name, value)
|
||||
return result
|
||||
|
||||
def as_tuple(self, value):
|
||||
"""Utility function which converts lists to tuples."""
|
||||
if isinstance(value, list):
|
||||
value = tuple(value)
|
||||
return value
|
||||
|
||||
class DictConfigurator(BaseConfigurator):
|
||||
"""
|
||||
Configure logging using a dictionary-like object to describe the
|
||||
configuration.
|
||||
"""
|
||||
|
||||
def configure(self):
|
||||
"""Do the configuration."""
|
||||
|
||||
config = self.config
|
||||
if 'version' not in config:
|
||||
raise ValueError("dictionary doesn't specify a version")
|
||||
if config['version'] != 1:
|
||||
raise ValueError("Unsupported version: %s" % config['version'])
|
||||
incremental = config.pop('incremental', False)
|
||||
EMPTY_DICT = {}
|
||||
logging._acquireLock()
|
||||
try:
|
||||
if incremental:
|
||||
handlers = config.get('handlers', EMPTY_DICT)
|
||||
# incremental handler config only if handler name
|
||||
# ties in to logging._handlers (Python 2.7)
|
||||
if sys.version_info[:2] == (2, 7):
|
||||
for name in handlers:
|
||||
if name not in logging._handlers:
|
||||
raise ValueError('No handler found with '
|
||||
'name %r' % name)
|
||||
else:
|
||||
try:
|
||||
handler = logging._handlers[name]
|
||||
handler_config = handlers[name]
|
||||
level = handler_config.get('level', None)
|
||||
if level:
|
||||
handler.setLevel(_checkLevel(level))
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure handler '
|
||||
'%r: %s' % (name, e))
|
||||
loggers = config.get('loggers', EMPTY_DICT)
|
||||
for name in loggers:
|
||||
try:
|
||||
self.configure_logger(name, loggers[name], True)
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure logger '
|
||||
'%r: %s' % (name, e))
|
||||
root = config.get('root', None)
|
||||
if root:
|
||||
try:
|
||||
self.configure_root(root, True)
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure root '
|
||||
'logger: %s' % e)
|
||||
else:
|
||||
disable_existing = config.pop('disable_existing_loggers', True)
|
||||
|
||||
logging._handlers.clear()
|
||||
del logging._handlerList[:]
|
||||
|
||||
# Do formatters first - they don't refer to anything else
|
||||
formatters = config.get('formatters', EMPTY_DICT)
|
||||
for name in formatters:
|
||||
try:
|
||||
formatters[name] = self.configure_formatter(
|
||||
formatters[name])
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure '
|
||||
'formatter %r: %s' % (name, e))
|
||||
# Next, do filters - they don't refer to anything else, either
|
||||
filters = config.get('filters', EMPTY_DICT)
|
||||
for name in filters:
|
||||
try:
|
||||
filters[name] = self.configure_filter(filters[name])
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure '
|
||||
'filter %r: %s' % (name, e))
|
||||
|
||||
# Next, do handlers - they refer to formatters and filters
|
||||
# As handlers can refer to other handlers, sort the keys
|
||||
# to allow a deterministic order of configuration
|
||||
handlers = config.get('handlers', EMPTY_DICT)
|
||||
for name in sorted(handlers):
|
||||
try:
|
||||
handler = self.configure_handler(handlers[name])
|
||||
handler.name = name
|
||||
handlers[name] = handler
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure handler '
|
||||
'%r: %s' % (name, e))
|
||||
# Next, do loggers - they refer to handlers and filters
|
||||
|
||||
#we don't want to lose the existing loggers,
|
||||
#since other threads may have pointers to them.
|
||||
#existing is set to contain all existing loggers,
|
||||
#and as we go through the new configuration we
|
||||
#remove any which are configured. At the end,
|
||||
#what's left in existing is the set of loggers
|
||||
#which were in the previous configuration but
|
||||
#which are not in the new configuration.
|
||||
root = logging.root
|
||||
existing = root.manager.loggerDict.keys()
|
||||
#The list needs to be sorted so that we can
|
||||
#avoid disabling child loggers of explicitly
|
||||
#named loggers. With a sorted list it is easier
|
||||
#to find the child loggers.
|
||||
existing.sort()
|
||||
#We'll keep the list of existing loggers
|
||||
#which are children of named loggers here...
|
||||
child_loggers = []
|
||||
#now set up the new ones...
|
||||
loggers = config.get('loggers', EMPTY_DICT)
|
||||
for name in loggers:
|
||||
if name in existing:
|
||||
i = existing.index(name)
|
||||
prefixed = name + "."
|
||||
pflen = len(prefixed)
|
||||
num_existing = len(existing)
|
||||
i = i + 1 # look at the entry after name
|
||||
while (i < num_existing) and\
|
||||
(existing[i][:pflen] == prefixed):
|
||||
child_loggers.append(existing[i])
|
||||
i = i + 1
|
||||
existing.remove(name)
|
||||
try:
|
||||
self.configure_logger(name, loggers[name])
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure logger '
|
||||
'%r: %s' % (name, e))
|
||||
|
||||
#Disable any old loggers. There's no point deleting
|
||||
#them as other threads may continue to hold references
|
||||
#and by disabling them, you stop them doing any logging.
|
||||
#However, don't disable children of named loggers, as that's
|
||||
#probably not what was intended by the user.
|
||||
for log in existing:
|
||||
logger = root.manager.loggerDict[log]
|
||||
if log in child_loggers:
|
||||
logger.level = logging.NOTSET
|
||||
logger.handlers = []
|
||||
logger.propagate = True
|
||||
elif disable_existing:
|
||||
logger.disabled = True
|
||||
|
||||
# And finally, do the root logger
|
||||
root = config.get('root', None)
|
||||
if root:
|
||||
try:
|
||||
self.configure_root(root)
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to configure root '
|
||||
'logger: %s' % e)
|
||||
finally:
|
||||
logging._releaseLock()
|
||||
|
||||
def configure_formatter(self, config):
|
||||
"""Configure a formatter from a dictionary."""
|
||||
if '()' in config:
|
||||
factory = config['()'] # for use in exception handler
|
||||
try:
|
||||
result = self.configure_custom(config)
|
||||
except TypeError, te:
|
||||
if "'format'" not in str(te):
|
||||
raise
|
||||
#Name of parameter changed from fmt to format.
|
||||
#Retry with old name.
|
||||
#This is so that code can be used with older Python versions
|
||||
#(e.g. by Django)
|
||||
config['fmt'] = config.pop('format')
|
||||
config['()'] = factory
|
||||
result = self.configure_custom(config)
|
||||
else:
|
||||
fmt = config.get('format', None)
|
||||
dfmt = config.get('datefmt', None)
|
||||
result = logging.Formatter(fmt, dfmt)
|
||||
return result
|
||||
|
||||
def configure_filter(self, config):
|
||||
"""Configure a filter from a dictionary."""
|
||||
if '()' in config:
|
||||
result = self.configure_custom(config)
|
||||
else:
|
||||
name = config.get('name', '')
|
||||
result = logging.Filter(name)
|
||||
return result
|
||||
|
||||
def add_filters(self, filterer, filters):
|
||||
"""Add filters to a filterer from a list of names."""
|
||||
for f in filters:
|
||||
try:
|
||||
filterer.addFilter(self.config['filters'][f])
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to add filter %r: %s' % (f, e))
|
||||
|
||||
def configure_handler(self, config):
|
||||
"""Configure a handler from a dictionary."""
|
||||
formatter = config.pop('formatter', None)
|
||||
if formatter:
|
||||
try:
|
||||
formatter = self.config['formatters'][formatter]
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to set formatter '
|
||||
'%r: %s' % (formatter, e))
|
||||
level = config.pop('level', None)
|
||||
filters = config.pop('filters', None)
|
||||
if '()' in config:
|
||||
c = config.pop('()')
|
||||
if not hasattr(c, '__call__') and hasattr(types, 'ClassType') and type(c) != types.ClassType:
|
||||
c = self.resolve(c)
|
||||
factory = c
|
||||
else:
|
||||
klass = self.resolve(config.pop('class'))
|
||||
#Special case for handler which refers to another handler
|
||||
if issubclass(klass, logging.handlers.MemoryHandler) and\
|
||||
'target' in config:
|
||||
try:
|
||||
config['target'] = self.config['handlers'][config['target']]
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to set target handler '
|
||||
'%r: %s' % (config['target'], e))
|
||||
elif issubclass(klass, logging.handlers.SMTPHandler) and\
|
||||
'mailhost' in config:
|
||||
config['mailhost'] = self.as_tuple(config['mailhost'])
|
||||
elif issubclass(klass, logging.handlers.SysLogHandler) and\
|
||||
'address' in config:
|
||||
config['address'] = self.as_tuple(config['address'])
|
||||
factory = klass
|
||||
kwargs = dict([(k, config[k]) for k in config if valid_ident(k)])
|
||||
try:
|
||||
result = factory(**kwargs)
|
||||
except TypeError, te:
|
||||
if "'stream'" not in str(te):
|
||||
raise
|
||||
#The argument name changed from strm to stream
|
||||
#Retry with old name.
|
||||
#This is so that code can be used with older Python versions
|
||||
#(e.g. by Django)
|
||||
kwargs['strm'] = kwargs.pop('stream')
|
||||
result = factory(**kwargs)
|
||||
if formatter:
|
||||
result.setFormatter(formatter)
|
||||
if level is not None:
|
||||
result.setLevel(_checkLevel(level))
|
||||
if filters:
|
||||
self.add_filters(result, filters)
|
||||
return result
|
||||
|
||||
def add_handlers(self, logger, handlers):
|
||||
"""Add handlers to a logger from a list of names."""
|
||||
for h in handlers:
|
||||
try:
|
||||
logger.addHandler(self.config['handlers'][h])
|
||||
except StandardError, e:
|
||||
raise ValueError('Unable to add handler %r: %s' % (h, e))
|
||||
|
||||
def common_logger_config(self, logger, config, incremental=False):
|
||||
"""
|
||||
Perform configuration which is common to root and non-root loggers.
|
||||
"""
|
||||
level = config.get('level', None)
|
||||
if level is not None:
|
||||
logger.setLevel(_checkLevel(level))
|
||||
if not incremental:
|
||||
#Remove any existing handlers
|
||||
for h in logger.handlers[:]:
|
||||
logger.removeHandler(h)
|
||||
handlers = config.get('handlers', None)
|
||||
if handlers:
|
||||
self.add_handlers(logger, handlers)
|
||||
filters = config.get('filters', None)
|
||||
if filters:
|
||||
self.add_filters(logger, filters)
|
||||
|
||||
def configure_logger(self, name, config, incremental=False):
|
||||
"""Configure a non-root logger from a dictionary."""
|
||||
logger = logging.getLogger(name)
|
||||
self.common_logger_config(logger, config, incremental)
|
||||
propagate = config.get('propagate', None)
|
||||
if propagate is not None:
|
||||
logger.propagate = propagate
|
||||
|
||||
def configure_root(self, config, incremental=False):
|
||||
"""Configure a root logger from a dictionary."""
|
||||
root = logging.getLogger()
|
||||
self.common_logger_config(root, config, incremental)
|
||||
|
||||
dictConfigClass = DictConfigurator
|
||||
|
||||
def dictConfig(config):
|
||||
"""Configure logging using a dictionary."""
|
||||
dictConfigClass(config).configure()
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
from distutils.core import setup
|
||||
|
||||
setup(
|
||||
name='nuggets',
|
||||
version='0.1',
|
||||
py_modules="celeryutils csrf_context dictconfig".split(),
|
||||
description="Little utilities that don't deserve a package",
|
||||
long_description=open('README.rst').read(),
|
||||
author='Jeff Balogh',
|
||||
author_email='jbalogh@mozilla.com',
|
||||
url='http://github.com/mozilla/nuggets',
|
||||
license='BSD',
|
||||
zip_safe=False,
|
||||
classifiers=[
|
||||
'Development Status :: 4 - Beta',
|
||||
'Environment :: Web Environment',
|
||||
'Framework :: Django',
|
||||
'Intended Audience :: Developers',
|
||||
'License :: OSI Approved :: BSD License',
|
||||
'Operating System :: OS Independent',
|
||||
'Programming Language :: Python',
|
||||
'Topic :: Software Development :: Libraries :: Python Modules',
|
||||
],
|
||||
)
|
||||
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