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# Copyright 2009 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
# This file is imported by parts/scripts/sitecustomize.py, as set up in our
# buildout.cfg (see the "initialization" key in the "[scripts]" section).
from collections import defaultdict
import itertools
import os
import warnings
import logging
from twisted.internet.defer import (
Deferred,
DeferredList,
)
from bzrlib.branch import Branch
from lp.services.log import loglevels
from lp.services.log.logger import LaunchpadLogger
from lp.services.log.mappingfilter import MappingFilter
from lp.services.log.nullhandler import NullHandler
from lp.services.mime import customizeMimetypes
from zope.security import checker
def add_custom_loglevels():
"""Add out custom log levels to the Python logging package."""
# This import installs custom ZODB loglevels, which we can then
# override. BLATHER is between INFO and DEBUG, so we can leave it.
# TRACE conflicts with DEBUG6, and since we are not using ZEO, we
# just overwrite the level string by calling addLevelName.
from ZODB.loglevels import BLATHER, TRACE
# Confirm our above assumptions, and silence lint at the same time.
assert BLATHER == 15
assert TRACE == loglevels.DEBUG6
logging.addLevelName(loglevels.DEBUG2, 'DEBUG2')
logging.addLevelName(loglevels.DEBUG3, 'DEBUG3')
logging.addLevelName(loglevels.DEBUG4, 'DEBUG4')
logging.addLevelName(loglevels.DEBUG5, 'DEBUG5')
logging.addLevelName(loglevels.DEBUG6, 'DEBUG6')
logging.addLevelName(loglevels.DEBUG7, 'DEBUG7')
logging.addLevelName(loglevels.DEBUG8, 'DEBUG8')
logging.addLevelName(loglevels.DEBUG9, 'DEBUG9')
# Install our customized Logger that provides easy access to our
# custom loglevels.
logging.setLoggerClass(LaunchpadLogger)
# Fix the root logger, replacing it with an instance of our
# customized Logger. The original one is instantiated on import of
# the logging module, so our override does not take effect without
# this manual effort.
old_root = logging.root
new_root = LaunchpadLogger('root', loglevels.WARNING)
# Fix globals.
logging.root = new_root
logging.Logger.root = new_root
# Fix manager.
manager = logging.Logger.manager
manager.root = new_root
# Fix existing Logger instances.
for logger in manager.loggerDict.values():
if getattr(logger, 'parent', None) is old_root:
logger.parent = new_root
def silence_bzr_logger():
"""Install the NullHandler on the bzr logger to silence logs."""
bzr_logger = logging.getLogger('bzr')
bzr_logger.addHandler(NullHandler())
bzr_logger.propagate = False
def silence_zcml_logger():
"""Lower level of ZCML parsing DEBUG messages."""
config_filter = MappingFilter(
{logging.DEBUG: (7, 'DEBUG4')}, 'config')
logging.getLogger('config').addFilter(config_filter)
def silence_transaction_logger():
"""Lower level of DEBUG messages from the transaction module."""
# Transaction logging is too noisy. Lower its DEBUG messages
# to DEBUG3. Transactions log to loggers named txn.<thread_id>,
# so we need to register a null handler with a filter to ensure
# the logging records get mutated before being propagated up
# to higher level loggers.
txn_handler = NullHandler()
txn_filter = MappingFilter(
{logging.DEBUG: (8, 'DEBUG3')}, 'txn')
txn_handler.addFilter(txn_filter)
logging.getLogger('txn').addHandler(txn_handler)
def dont_wrap_class_and_subclasses(cls):
checker.BasicTypes.update({cls: checker.NoProxy})
for subcls in cls.__subclasses__():
dont_wrap_class_and_subclasses(subcls)
def silence_warnings():
"""Silence warnings across the entire Launchpad project."""
# pycrypto-2.0.1 on Python2.6:
# DeprecationWarning: the sha module is deprecated; use the hashlib
# module instead
warnings.filterwarnings(
"ignore",
category=DeprecationWarning,
module="Crypto")
# Filter all deprecation warnings for Zope 3.6, which emanate from
# the zope package.
filter_pattern = '.*(Zope 3.6|provide.*global site manager).*'
warnings.filterwarnings(
'ignore', filter_pattern, category=DeprecationWarning)
# XXX wgrant 2010-03-30 bug=551510:
# Also filter apt_pkg warnings, since Lucid's python-apt has a new API.
warnings.filterwarnings(
'ignore', '.*apt_pkg.*', category=DeprecationWarning)
def customize_logger():
"""Customize the logging system.
This function is also invoked by the test infrastructure to reset
logging between tests.
"""
silence_bzr_logger()
silence_zcml_logger()
silence_transaction_logger()
def main(instance_name):
# This is called by our custom buildout-generated sitecustomize.py
# in parts/scripts/sitecustomize.py. The instance name is sent to
# buildout from the Makefile, and then inserted into
# sitecustomize.py. See buildout.cfg in the "initialization" value
# of the [scripts] section for the code that goes into this custom
# sitecustomize.py. We do all actual initialization here, in a more
# visible place.
if instance_name and instance_name != 'development':
# See bug 656213 for why we do this carefully.
os.environ.setdefault('LPCONFIG', instance_name)
os.environ['STORM_CEXTENSIONS'] = '1'
add_custom_loglevels()
customizeMimetypes()
dont_wrap_class_and_subclasses(Branch)
checker.BasicTypes.update({defaultdict: checker.NoProxy})
checker.BasicTypes.update({Deferred: checker.NoProxy})
checker.BasicTypes.update({DeferredList: checker.NoProxy})
checker.BasicTypes[itertools.groupby] = checker._iteratorChecker
# The itertools._grouper type is not exposed by name, so we must get it
# through actually using itertools.groupby.
grouper = type(list(itertools.groupby([0]))[0][1])
checker.BasicTypes[grouper] = checker._iteratorChecker
silence_warnings()
customize_logger()
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