933 lines
35 KiB
Python
933 lines
35 KiB
Python
|
# Copyright 2001-2013 by Vinay Sajip. All Rights Reserved.
|
||
|
|
#
|
||
|
|
# Permission to use, copy, modify, and distribute this software and its
|
||
|
|
# documentation for any purpose and without fee is hereby granted,
|
||
|
|
# provided that the above copyright notice appear in all copies and that
|
||
|
|
# both that copyright notice and this permission notice appear in
|
||
|
|
# supporting documentation, and that the name of Vinay Sajip
|
||
|
|
# not be used in advertising or publicity pertaining to distribution
|
||
|
|
# of the software without specific, written prior permission.
|
||
|
|
# VINAY SAJIP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
|
||
|
|
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
|
||
|
|
# VINAY SAJIP BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
|
||
|
|
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
|
||
|
|
# IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
||
|
|
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
|
||
|
|
"""
|
||
|
|
Configuration functions for the logging package for Python. The core package
|
||
|
|
is based on PEP 282 and comments thereto in comp.lang.python, and influenced
|
||
|
|
by Apache's log4j system.
|
||
|
|
|
||
|
|
Copyright (C) 2001-2013 Vinay Sajip. All Rights Reserved.
|
||
|
|
|
||
|
|
To use, simply 'import logging' and log away!
|
||
|
|
"""
|
||
|
|
|
||
|
|
import sys, logging, logging.handlers, socket, struct, os, traceback, re
|
||
|
|
import types, cStringIO
|
||
|
|
|
||
|
|
try:
|
||
|
|
import thread
|
||
|
|
import threading
|
||
|
|
except ImportError:
|
||
|
|
thread = None
|
||
|
|
|
||
|
|
from SocketServer import ThreadingTCPServer, StreamRequestHandler
|
||
|
|
|
||
|
|
|
||
|
|
DEFAULT_LOGGING_CONFIG_PORT = 9030
|
||
|
|
|
||
|
|
if sys.platform == "win32":
|
||
|
|
RESET_ERROR = 10054 #WSAECONNRESET
|
||
|
|
else:
|
||
|
|
RESET_ERROR = 104 #ECONNRESET
|
||
|
|
|
||
|
|
#
|
||
|
|
# The following code implements a socket listener for on-the-fly
|
||
|
|
# reconfiguration of logging.
|
||
|
|
#
|
||
|
|
# _listener holds the server object doing the listening
|
||
|
|
_listener = None
|
||
|
|
|
||
|
|
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
|
||
|
|
"""
|
||
|
|
Read the logging configuration from a ConfigParser-format file.
|
||
|
|
|
||
|
|
This can be called several times from an application, allowing an end user
|
||
|
|
the ability to select from various pre-canned configurations (if the
|
||
|
|
developer provides a mechanism to present the choices and load the chosen
|
||
|
|
configuration).
|
||
|
|
"""
|
||
|
|
import ConfigParser
|
||
|
|
|
||
|
|
cp = ConfigParser.ConfigParser(defaults)
|
||
|
|
if hasattr(fname, 'readline'):
|
||
|
|
cp.readfp(fname)
|
||
|
|
else:
|
||
|
|
cp.read(fname)
|
||
|
|
|
||
|
|
formatters = _create_formatters(cp)
|
||
|
|
|
||
|
|
# critical section
|
||
|
|
logging._acquireLock()
|
||
|
|
try:
|
||
|
|
logging._handlers.clear()
|
||
|
|
del logging._handlerList[:]
|
||
|
|
# Handlers add themselves to logging._handlers
|
||
|
|
handlers = _install_handlers(cp, formatters)
|
||
|
|
_install_loggers(cp, handlers, disable_existing_loggers)
|
||
|
|
finally:
|
||
|
|
logging._releaseLock()
|
||
|
|
|
||
|
|
|
||
|
|
def _resolve(name):
|
||
|
|
"""Resolve a dotted name to a global object."""
|
||
|
|
name = name.split('.')
|
||
|
|
used = name.pop(0)
|
||
|
|
found = __import__(used)
|
||
|
|
for n in name:
|
||
|
|
used = used + '.' + n
|
||
|
|
try:
|
||
|
|
found = getattr(found, n)
|
||
|
|
except AttributeError:
|
||
|
|
__import__(used)
|
||
|
|
found = getattr(found, n)
|
||
|
|
return found
|
||
|
|
|
||
|
|
def _strip_spaces(alist):
|
||
|
|
return map(lambda x: x.strip(), alist)
|
||
|
|
|
||
|
|
def _encoded(s):
|
||
|
|
return s if isinstance(s, str) else s.encode('utf-8')
|
||
|
|
|
||
|
|
def _create_formatters(cp):
|
||
|
|
"""Create and return formatters"""
|
||
|
|
flist = cp.get("formatters", "keys")
|
||
|
|
if not len(flist):
|
||
|
|
return {}
|
||
|
|
flist = flist.split(",")
|
||
|
|
flist = _strip_spaces(flist)
|
||
|
|
formatters = {}
|
||
|
|
for form in flist:
|
||
|
|
sectname = "formatter_%s" % form
|
||
|
|
opts = cp.options(sectname)
|
||
|
|
if "format" in opts:
|
||
|
|
fs = cp.get(sectname, "format", 1)
|
||
|
|
else:
|
||
|
|
fs = None
|
||
|
|
if "datefmt" in opts:
|
||
|
|
dfs = cp.get(sectname, "datefmt", 1)
|
||
|
|
else:
|
||
|
|
dfs = None
|
||
|
|
c = logging.Formatter
|
||
|
|
if "class" in opts:
|
||
|
|
class_name = cp.get(sectname, "class")
|
||
|
|
if class_name:
|
||
|
|
c = _resolve(class_name)
|
||
|
|
f = c(fs, dfs)
|
||
|
|
formatters[form] = f
|
||
|
|
return formatters
|
||
|
|
|
||
|
|
|
||
|
|
def _install_handlers(cp, formatters):
|
||
|
|
"""Install and return handlers"""
|
||
|
|
hlist = cp.get("handlers", "keys")
|
||
|
|
if not len(hlist):
|
||
|
|
return {}
|
||
|
|
hlist = hlist.split(",")
|
||
|
|
hlist = _strip_spaces(hlist)
|
||
|
|
handlers = {}
|
||
|
|
fixups = [] #for inter-handler references
|
||
|
|
for hand in hlist:
|
||
|
|
sectname = "handler_%s" % hand
|
||
|
|
klass = cp.get(sectname, "class")
|
||
|
|
opts = cp.options(sectname)
|
||
|
|
if "formatter" in opts:
|
||
|
|
fmt = cp.get(sectname, "formatter")
|
||
|
|
else:
|
||
|
|
fmt = ""
|
||
|
|
try:
|
||
|
|
klass = eval(klass, vars(logging))
|
||
|
|
except (AttributeError, NameError):
|
||
|
|
klass = _resolve(klass)
|
||
|
|
args = cp.get(sectname, "args")
|
||
|
|
args = eval(args, vars(logging))
|
||
|
|
h = klass(*args)
|
||
|
|
if "level" in opts:
|
||
|
|
level = cp.get(sectname, "level")
|
||
|
|
h.setLevel(logging._levelNames[level])
|
||
|
|
if len(fmt):
|
||
|
|
h.setFormatter(formatters[fmt])
|
||
|
|
if issubclass(klass, logging.handlers.MemoryHandler):
|
||
|
|
if "target" in opts:
|
||
|
|
target = cp.get(sectname,"target")
|
||
|
|
else:
|
||
|
|
target = ""
|
||
|
|
if len(target): #the target handler may not be loaded yet, so keep for later...
|
||
|
|
fixups.append((h, target))
|
||
|
|
handlers[hand] = h
|
||
|
|
#now all handlers are loaded, fixup inter-handler references...
|
||
|
|
for h, t in fixups:
|
||
|
|
h.setTarget(handlers[t])
|
||
|
|
return handlers
|
||
|
|
|
||
|
|
|
||
|
|
def _install_loggers(cp, handlers, disable_existing_loggers):
|
||
|
|
"""Create and install loggers"""
|
||
|
|
|
||
|
|
# configure the root first
|
||
|
|
llist = cp.get("loggers", "keys")
|
||
|
|
llist = llist.split(",")
|
||
|
|
llist = list(map(lambda x: x.strip(), llist))
|
||
|
|
llist.remove("root")
|
||
|
|
sectname = "logger_root"
|
||
|
|
root = logging.root
|
||
|
|
log = root
|
||
|
|
opts = cp.options(sectname)
|
||
|
|
if "level" in opts:
|
||
|
|
level = cp.get(sectname, "level")
|
||
|
|
log.setLevel(logging._levelNames[level])
|
||
|
|
for h in root.handlers[:]:
|
||
|
|
root.removeHandler(h)
|
||
|
|
hlist = cp.get(sectname, "handlers")
|
||
|
|
if len(hlist):
|
||
|
|
hlist = hlist.split(",")
|
||
|
|
hlist = _strip_spaces(hlist)
|
||
|
|
for hand in hlist:
|
||
|
|
log.addHandler(handlers[hand])
|
||
|
|
|
||
|
|
#and now the others...
|
||
|
|
#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.
|
||
|
|
existing = list(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...
|
||
|
|
for log in llist:
|
||
|
|
sectname = "logger_%s" % log
|
||
|
|
qn = cp.get(sectname, "qualname")
|
||
|
|
opts = cp.options(sectname)
|
||
|
|
if "propagate" in opts:
|
||
|
|
propagate = cp.getint(sectname, "propagate")
|
||
|
|
else:
|
||
|
|
propagate = 1
|
||
|
|
logger = logging.getLogger(qn)
|
||
|
|
if qn in existing:
|
||
|
|
i = existing.index(qn) + 1 # start with the entry after qn
|
||
|
|
prefixed = qn + "."
|
||
|
|
pflen = len(prefixed)
|
||
|
|
num_existing = len(existing)
|
||
|
|
while i < num_existing:
|
||
|
|
if existing[i][:pflen] == prefixed:
|
||
|
|
child_loggers.append(existing[i])
|
||
|
|
i += 1
|
||
|
|
existing.remove(qn)
|
||
|
|
if "level" in opts:
|
||
|
|
level = cp.get(sectname, "level")
|
||
|
|
logger.setLevel(logging._levelNames[level])
|
||
|
|
for h in logger.handlers[:]:
|
||
|
|
logger.removeHandler(h)
|
||
|
|
logger.propagate = propagate
|
||
|
|
logger.disabled = 0
|
||
|
|
hlist = cp.get(sectname, "handlers")
|
||
|
|
if len(hlist):
|
||
|
|
hlist = hlist.split(",")
|
||
|
|
hlist = _strip_spaces(hlist)
|
||
|
|
for hand in hlist:
|
||
|
|
logger.addHandler(handlers[hand])
|
||
|
|
|
||
|
|
#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 = 1
|
||
|
|
else:
|
||
|
|
logger.disabled = disable_existing_loggers
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
IDENTIFIER = re.compile('^[a-z_][a-z0-9_]*$', re.I)
|
||
|
|
|
||
|
|
|
||
|
|
def valid_ident(s):
|
||
|
|
m = IDENTIFIER.match(s)
|
||
|
|
if not m:
|
||
|
|
raise ValueError('Not a valid Python identifier: %r' % s)
|
||
|
|
return True
|
||
|
|
|
||
|
|
|
||
|
|
# The ConvertingXXX classes are wrappers around standard Python containers,
|
||
|
|
# and they serve to convert any suitable values in the container. The
|
||
|
|
# conversion converts base dicts, lists and tuples to their wrapped
|
||
|
|
# equivalents, whereas strings which match a conversion format are converted
|
||
|
|
# appropriately.
|
||
|
|
#
|
||
|
|
# Each wrapper should have a configurator attribute holding the actual
|
||
|
|
# configurator to use for conversion.
|
||
|
|
|
||
|
|
class ConvertingDict(dict):
|
||
|
|
"""A converting dictionary wrapper."""
|
||
|
|
|
||
|
|
def __getitem__(self, key):
|
||
|
|
value = dict.__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,
|
||
|
|
ConvertingTuple):
|
||
|
|
result.parent = self
|
||
|
|
result.key = key
|
||
|
|
return result
|
||
|
|
|
||
|
|
def get(self, key, default=None):
|
||
|
|
value = dict.get(self, key, default)
|
||
|
|
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,
|
||
|
|
ConvertingTuple):
|
||
|
|
result.parent = self
|
||
|
|
result.key = key
|
||
|
|
return result
|
||
|
|
|
||
|
|
def pop(self, key, default=None):
|
||
|
|
value = dict.pop(self, key, default)
|
||
|
|
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
|
||
|
|
|
||
|
|
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,
|
||
|
|
ConvertingTuple):
|
||
|
|
result.parent = self
|
||
|
|
result.key = key
|
||
|
|
return result
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
class ConvertingTuple(tuple):
|
||
|
|
"""A converting tuple wrapper."""
|
||
|
|
def __getitem__(self, key):
|
||
|
|
value = tuple.__getitem__(self, key)
|
||
|
|
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
|
||
|
|
|
||
|
|
class BaseConfigurator(object):
|
||
|
|
"""
|
||
|
|
The configurator base class which defines some useful defaults.
|
||
|
|
"""
|
||
|
|
|
||
|
|
CONVERT_PATTERN = re.compile(r'^(?P<prefix>[a-z]+)://(?P<suffix>.*)$')
|
||
|
|
|
||
|
|
WORD_PATTERN = re.compile(r'^\s*(\w+)\s*')
|
||
|
|
DOT_PATTERN = re.compile(r'^\.\s*(\w+)\s*')
|
||
|
|
INDEX_PATTERN = re.compile(r'^\[\s*(\w+)\s*\]\s*')
|
||
|
|
DIGIT_PATTERN = re.compile(r'^\d+$')
|
||
|
|
|
||
|
|
value_converters = {
|
||
|
|
'ext' : 'ext_convert',
|
||
|
|
'cfg' : 'cfg_convert',
|
||
|
|
}
|
||
|
|
|
||
|
|
# We might want to use a different one, e.g. importlib
|
||
|
|
importer = __import__
|
||
|
|
|
||
|
|
def __init__(self, config):
|
||
|
|
self.config = ConvertingDict(config)
|
||
|
|
self.config.configurator = self
|
||
|
|
# Issue 12718: winpdb replaces __import__ with a Python function, which
|
||
|
|
# ends up being treated as a bound method. To avoid problems, we
|
||
|
|
# set the importer on the instance, but leave it defined in the class
|
||
|
|
# so existing code doesn't break
|
||
|
|
if type(__import__) == types.FunctionType:
|
||
|
|
self.importer = __import__
|
||
|
|
|
||
|
|
def resolve(self, s):
|
||
|
|
"""
|
||
|
|
Resolve strings to objects using standard import and attribute
|
||
|
|
syntax.
|
||
|
|
"""
|
||
|
|
name = s.split('.')
|
||
|
|
used = name.pop(0)
|
||
|
|
try:
|
||
|
|
found = self.importer(used)
|
||
|
|
for frag in name:
|
||
|
|
used += '.' + frag
|
||
|
|
try:
|
||
|
|
found = getattr(found, frag)
|
||
|
|
except AttributeError:
|
||
|
|
self.importer(used)
|
||
|
|
found = getattr(found, frag)
|
||
|
|
return found
|
||
|
|
except ImportError:
|
||
|
|
e, tb = sys.exc_info()[1:]
|
||
|
|
v = ValueError('Cannot resolve %r: %s' % (s, e))
|
||
|
|
v.__cause__, v.__traceback__ = e, tb
|
||
|
|
raise v
|
||
|
|
|
||
|
|
def ext_convert(self, value):
|
||
|
|
"""Default converter for the ext:// protocol."""
|
||
|
|
return self.resolve(value)
|
||
|
|
|
||
|
|
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:
|
||
|
|
rest = rest[m.end():]
|
||
|
|
d = self.config[m.groups()[0]]
|
||
|
|
#print d, rest
|
||
|
|
while rest:
|
||
|
|
m = self.DOT_PATTERN.match(rest)
|
||
|
|
if m:
|
||
|
|
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:
|
||
|
|
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
|
||
|
|
|
||
|
|
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)
|
||
|
|
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(logging._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)
|
||
|
|
deferred = []
|
||
|
|
for name in sorted(handlers):
|
||
|
|
try:
|
||
|
|
handler = self.configure_handler(handlers[name])
|
||
|
|
handler.name = name
|
||
|
|
handlers[name] = handler
|
||
|
|
except StandardError, e:
|
||
|
|
if 'target not configured yet' in str(e):
|
||
|
|
deferred.append(name)
|
||
|
|
else:
|
||
|
|
raise ValueError('Unable to configure handler '
|
||
|
|
'%r: %s' % (name, e))
|
||
|
|
|
||
|
|
# Now do any that were deferred
|
||
|
|
for name in deferred:
|
||
|
|
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:
|
||
|
|
name = _encoded(name)
|
||
|
|
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:
|
||
|
|
cname = config.pop('class')
|
||
|
|
klass = self.resolve(cname)
|
||
|
|
#Special case for handler which refers to another handler
|
||
|
|
if issubclass(klass, logging.handlers.MemoryHandler) and\
|
||
|
|
'target' in config:
|
||
|
|
try:
|
||
|
|
th = self.config['handlers'][config['target']]
|
||
|
|
if not isinstance(th, logging.Handler):
|
||
|
|
config['class'] = cname # restore for deferred configuration
|
||
|
|
raise StandardError('target not configured yet')
|
||
|
|
config['target'] = th
|
||
|
|
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(logging._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(logging._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()
|
||
|
|
|
||
|
|
|
||
|
|
def listen(port=DEFAULT_LOGGING_CONFIG_PORT):
|
||
|
|
"""
|
||
|
|
Start up a socket server on the specified port, and listen for new
|
||
|
|
configurations.
|
||
|
|
|
||
|
|
These will be sent as a file suitable for processing by fileConfig().
|
||
|
|
Returns a Thread object on which you can call start() to start the server,
|
||
|
|
and which you can join() when appropriate. To stop the server, call
|
||
|
|
stopListening().
|
||
|
|
"""
|
||
|
|
if not thread:
|
||
|
|
raise NotImplementedError("listen() needs threading to work")
|
||
|
|
|
||
|
|
class ConfigStreamHandler(StreamRequestHandler):
|
||
|
|
"""
|
||
|
|
Handler for a logging configuration request.
|
||
|
|
|
||
|
|
It expects a completely new logging configuration and uses fileConfig
|
||
|
|
to install it.
|
||
|
|
"""
|
||
|
|
def handle(self):
|
||
|
|
"""
|
||
|
|
Handle a request.
|
||
|
|
|
||
|
|
Each request is expected to be a 4-byte length, packed using
|
||
|
|
struct.pack(">L", n), followed by the config file.
|
||
|
|
Uses fileConfig() to do the grunt work.
|
||
|
|
"""
|
||
|
|
import tempfile
|
||
|
|
try:
|
||
|
|
conn = self.connection
|
||
|
|
chunk = conn.recv(4)
|
||
|
|
if len(chunk) == 4:
|
||
|
|
slen = struct.unpack(">L", chunk)[0]
|
||
|
|
chunk = self.connection.recv(slen)
|
||
|
|
while len(chunk) < slen:
|
||
|
|
chunk = chunk + conn.recv(slen - len(chunk))
|
||
|
|
try:
|
||
|
|
import json
|
||
|
|
d =json.loads(chunk)
|
||
|
|
assert isinstance(d, dict)
|
||
|
|
dictConfig(d)
|
||
|
|
except:
|
||
|
|
#Apply new configuration.
|
||
|
|
|
||
|
|
file = cStringIO.StringIO(chunk)
|
||
|
|
try:
|
||
|
|
fileConfig(file)
|
||
|
|
except (KeyboardInterrupt, SystemExit):
|
||
|
|
raise
|
||
|
|
except:
|
||
|
|
traceback.print_exc()
|
||
|
|
if self.server.ready:
|
||
|
|
self.server.ready.set()
|
||
|
|
except socket.error, e:
|
||
|
|
if not isinstance(e.args, tuple):
|
||
|
|
raise
|
||
|
|
else:
|
||
|
|
errcode = e.args[0]
|
||
|
|
if errcode != RESET_ERROR:
|
||
|
|
raise
|
||
|
|
|
||
|
|
class ConfigSocketReceiver(ThreadingTCPServer):
|
||
|
|
"""
|
||
|
|
A simple TCP socket-based logging config receiver.
|
||
|
|
"""
|
||
|
|
|
||
|
|
allow_reuse_address = 1
|
||
|
|
|
||
|
|
def __init__(self, host='localhost', port=DEFAULT_LOGGING_CONFIG_PORT,
|
||
|
|
handler=None, ready=None):
|
||
|
|
ThreadingTCPServer.__init__(self, (host, port), handler)
|
||
|
|
logging._acquireLock()
|
||
|
|
self.abort = 0
|
||
|
|
logging._releaseLock()
|
||
|
|
self.timeout = 1
|
||
|
|
self.ready = ready
|
||
|
|
|
||
|
|
def serve_until_stopped(self):
|
||
|
|
import select
|
||
|
|
abort = 0
|
||
|
|
while not abort:
|
||
|
|
rd, wr, ex = select.select([self.socket.fileno()],
|
||
|
|
[], [],
|
||
|
|
self.timeout)
|
||
|
|
if rd:
|
||
|
|
self.handle_request()
|
||
|
|
logging._acquireLock()
|
||
|
|
abort = self.abort
|
||
|
|
logging._releaseLock()
|
||
|
|
self.socket.close()
|
||
|
|
|
||
|
|
class Server(threading.Thread):
|
||
|
|
|
||
|
|
def __init__(self, rcvr, hdlr, port):
|
||
|
|
super(Server, self).__init__()
|
||
|
|
self.rcvr = rcvr
|
||
|
|
self.hdlr = hdlr
|
||
|
|
self.port = port
|
||
|
|
self.ready = threading.Event()
|
||
|
|
|
||
|
|
def run(self):
|
||
|
|
server = self.rcvr(port=self.port, handler=self.hdlr,
|
||
|
|
ready=self.ready)
|
||
|
|
if self.port == 0:
|
||
|
|
self.port = server.server_address[1]
|
||
|
|
self.ready.set()
|
||
|
|
global _listener
|
||
|
|
logging._acquireLock()
|
||
|
|
_listener = server
|
||
|
|
logging._releaseLock()
|
||
|
|
server.serve_until_stopped()
|
||
|
|
|
||
|
|
return Server(ConfigSocketReceiver, ConfigStreamHandler, port)
|
||
|
|
|
||
|
|
def stopListening():
|
||
|
|
"""
|
||
|
|
Stop the listening server which was created with a call to listen().
|
||
|
|
"""
|
||
|
|
global _listener
|
||
|
|
logging._acquireLock()
|
||
|
|
try:
|
||
|
|
if _listener:
|
||
|
|
_listener.abort = 1
|
||
|
|
_listener = None
|
||
|
|
finally:
|
||
|
|
logging._releaseLock()
|