Allow file logging config
* Fixes lp904305 * remove module level log functions (getLogger to rule them all) * Move specific Environment logging to the one place it is used * Wrap getLogger to return a logger wrapped in a NovaContextAdapter * Do not overwrite the root logger * save_and_reraise_exception logs via error for passing exc_info * Uses CommonConfigOptions for compatability across Openstack Projects * Prefers CommonConfigOptions over legacy options * Install a NullHandler on the root logger if configured by FLAGS * Include example logging config file to mimic Nova defaults Change-Id: Ie59c3f755c142e2b7dc3b94b4e82e142e157bfac
This commit is contained in:
Jason Kölker
parent
40cd86cd4e
commit
9e30c25e37
@ -32,6 +32,11 @@
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"""
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import gettext
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import logging
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gettext.install("nova", unicode=1)
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gettext.install('nova', unicode=1)
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# NOTE(jkoelker) This configures the root logger if it is not already
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# configured so messages from logging setup can be written
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# to the console
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logging.basicConfig(format='%(message)s')
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@ -34,7 +34,7 @@ from nova.compat import flagfile
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from nova.openstack.common import cfg
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class NovaConfigOpts(cfg.ConfigOpts):
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class NovaConfigOpts(cfg.CommonConfigOpts):
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def __init__(self, *args, **kwargs):
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super(NovaConfigOpts, self).__init__(*args, **kwargs)
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@ -66,23 +66,17 @@ def _get_my_ip():
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(addr, port) = csock.getsockname()
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csock.close()
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return addr
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except socket.error as ex:
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except socket.error:
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return "127.0.0.1"
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log_opts = [
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cfg.BoolOpt('verbose',
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default=False,
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help='show debug output'),
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cfg.StrOpt('logdir',
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default=None,
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help='output to a per-service log file in named directory'),
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cfg.StrOpt('logfile',
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default=None,
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help='output to named file'),
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cfg.BoolOpt('use_syslog',
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default=False,
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help='output to syslog'),
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cfg.BoolOpt('use_stderr',
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default=True,
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help='log to standard error'),
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372
nova/log.py
372
nova/log.py
@ -31,8 +31,8 @@ It also allows setting of formatting information through flags.
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import cStringIO
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import inspect
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import json
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import logging
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import logging.config
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import logging.handlers
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import os
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import stat
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@ -84,40 +84,25 @@ log_opts = [
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FLAGS = flags.FLAGS
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FLAGS.register_opts(log_opts)
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# A list of things we want to replicate from logging.
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# levels
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CRITICAL = logging.CRITICAL
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FATAL = logging.FATAL
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ERROR = logging.ERROR
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WARNING = logging.WARNING
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WARN = logging.WARN
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INFO = logging.INFO
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DEBUG = logging.DEBUG
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NOTSET = logging.NOTSET
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# methods
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getLogger = logging.getLogger
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debug = logging.debug
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info = logging.info
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warning = logging.warning
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warn = logging.warn
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error = logging.error
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exception = logging.exception
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critical = logging.critical
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log = logging.log
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# handlers
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StreamHandler = logging.StreamHandler
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WatchedFileHandler = logging.handlers.WatchedFileHandler
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# logging.SysLogHandler is nicer than logging.logging.handler.SysLogHandler.
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SysLogHandler = logging.handlers.SysLogHandler
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# our new audit level
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AUDIT = logging.INFO + 1
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logging.addLevelName(AUDIT, 'AUDIT')
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# NOTE(jkoelker) Since we synthesized an audit level, make the logging
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# module aware of it so it acts like other levels.
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logging.AUDIT = logging.INFO + 1
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logging.addLevelName(logging.AUDIT, 'AUDIT')
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try:
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NullHandler = logging.NullHandler
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except AttributeError: # NOTE(jkoelker) NullHandler added in Python 2.7
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class NullHandler(logging.Handler):
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def handle(self, record):
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pass
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def emit(self, record):
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pass
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def createLock(self):
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self.lock = None
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def _dictify_context(context):
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@ -133,134 +118,52 @@ def _get_binary_name():
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def _get_log_file_path(binary=None):
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if FLAGS.logfile:
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return FLAGS.logfile
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if FLAGS.logdir:
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logfile = FLAGS.log_file or FLAGS.logfile
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logdir = FLAGS.log_dir or FLAGS.logdir
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if logfile and not logdir:
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return logfile
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if logfile and logdir:
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return os.path.join(logdir, logfile)
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if logdir:
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binary = binary or _get_binary_name()
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return '%s.log' % (os.path.join(FLAGS.logdir, binary),)
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return '%s.log' % (os.path.join(logdir, binary),)
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class NovaLogger(logging.Logger):
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"""NovaLogger manages request context and formatting.
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class NovaContextAdapter(logging.LoggerAdapter):
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warn = logging.LoggerAdapter.warning
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This becomes the class that is instantiated by logging.getLogger.
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def __init__(self, logger):
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self.logger = logger
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"""
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def audit(self, msg, *args, **kwargs):
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self.log(logging.AUDIT, msg, *args, **kwargs)
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def __init__(self, name, level=NOTSET):
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logging.Logger.__init__(self, name, level)
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self.setup_from_flags()
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def process(self, msg, kwargs):
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if 'extra' not in kwargs:
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kwargs['extra'] = {}
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extra = kwargs['extra']
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def setup_from_flags(self):
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"""Setup logger from flags."""
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level = NOTSET
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for pair in FLAGS.default_log_levels:
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logger, _sep, level_name = pair.partition('=')
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# NOTE(todd): if we set a.b, we want a.b.c to have the same level
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# (but not a.bc, so we check the dot)
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if self.name == logger or self.name.startswith("%s." % logger):
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level = globals()[level_name]
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self.setLevel(level)
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def _update_extra(self, params):
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if 'extra' not in params:
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params['extra'] = {}
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extra = params['extra']
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context = None
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if 'context' in params:
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context = params['context']
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del params['context']
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context = kwargs.pop('context', None)
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if not context:
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context = getattr(local.store, 'context', None)
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if context:
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extra.update(_dictify_context(context))
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if 'instance' in params:
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extra.update({'instance': (FLAGS.instance_format
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% params['instance'])})
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del params['instance']
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else:
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extra.update({'instance': ''})
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instance = kwargs.pop('instance', None)
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instance_extra = ''
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if instance:
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instance_extra = FLAGS.instance_format % instance
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extra.update({'instance': instance_extra})
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extra.update({"nova_version": version.version_string_with_vcs()})
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#NOTE(ameade): The following calls to _log must be maintained as direct
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#calls. _log introspects the call stack to get information such as the
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#filename and line number the logging method was called from.
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def log(self, lvl, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(lvl):
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self._log(lvl, msg, args, **kwargs)
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def debug(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(DEBUG):
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self._log(DEBUG, msg, args, **kwargs)
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def info(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(INFO):
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self._log(INFO, msg, args, **kwargs)
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def warn(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(WARN):
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self._log(WARN, msg, args, **kwargs)
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def warning(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(WARNING):
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self._log(WARNING, msg, args, **kwargs)
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def error(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(ERROR):
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self._log(ERROR, msg, args, **kwargs)
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def critical(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(CRITICAL):
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self._log(CRITICAL, msg, args, **kwargs)
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def fatal(self, msg, *args, **kwargs):
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self._update_extra(kwargs)
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if self.isEnabledFor(FATAL):
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self._log(FATAL, msg, args, **kwargs)
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def audit(self, msg, *args, **kwargs):
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"""Shortcut for our AUDIT level."""
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self._update_extra(kwargs)
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if self.isEnabledFor(AUDIT):
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self._log(AUDIT, msg, args, **kwargs)
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def addHandler(self, handler):
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"""Each handler gets our custom formatter."""
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handler.setFormatter(_formatter)
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return logging.Logger.addHandler(self, handler)
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def exception(self, msg, *args, **kwargs):
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"""Logging.exception doesn't handle kwargs, so breaks context."""
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if not kwargs.get('exc_info'):
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kwargs['exc_info'] = 1
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self.error(msg, *args, **kwargs)
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# NOTE(todd): does this really go here, or in _log ?
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extra = kwargs.get('extra')
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if not extra:
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return
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env = extra.get('environment')
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if env:
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env = env.copy()
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for k in env.keys():
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if not isinstance(env[k], str):
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env.pop(k)
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message = 'Environment: %s' % json.dumps(env)
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kwargs.pop('exc_info')
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self.error(message, **kwargs)
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return msg, kwargs
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class NovaFormatter(logging.Formatter):
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class LegacyNovaFormatter(logging.Formatter):
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"""A nova.context.RequestContext aware formatter configured through flags.
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The flags used to set format strings are: logging_context_format_string
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@ -275,6 +178,9 @@ class NovaFormatter(logging.Formatter):
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def format(self, record):
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"""Uses contextstring if request_id is set, otherwise default."""
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if 'instance' not in record.__dict__:
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record.__dict__['instance'] = ''
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if record.__dict__.get('request_id', None):
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self._fmt = FLAGS.logging_context_format_string
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else:
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@ -306,54 +212,6 @@ class NovaFormatter(logging.Formatter):
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return '\n'.join(formatted_lines)
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_formatter = NovaFormatter()
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class NovaRootLogger(NovaLogger):
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def __init__(self, name, level=NOTSET):
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self.logpath = None
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self.filelog = None
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self.streamlog = None
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self.syslog = None
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NovaLogger.__init__(self, name, level)
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def setup_from_flags(self):
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"""Setup logger from flags."""
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global _filelog
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if self.syslog:
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self.removeHandler(self.syslog)
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self.syslog = None
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if FLAGS.use_syslog:
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self.syslog = SysLogHandler(address='/dev/log')
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self.addHandler(self.syslog)
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logpath = _get_log_file_path()
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if logpath:
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if logpath != self.logpath:
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self.removeHandler(self.filelog)
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self.filelog = WatchedFileHandler(logpath)
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self.addHandler(self.filelog)
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self.logpath = logpath
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mode = int(FLAGS.logfile_mode, 8)
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st = os.stat(self.logpath)
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if st.st_mode != (stat.S_IFREG | mode):
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os.chmod(self.logpath, mode)
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else:
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self.removeHandler(self.filelog)
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if self.streamlog:
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self.removeHandler(self.streamlog)
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self.streamlog = None
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if FLAGS.use_stderr:
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self.streamlog = StreamHandler()
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self.addHandler(self.streamlog)
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if FLAGS.publish_errors:
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self.addHandler(PublishErrorsHandler(ERROR))
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if FLAGS.verbose:
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self.setLevel(DEBUG)
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else:
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self.setLevel(INFO)
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class PublishErrorsHandler(logging.Handler):
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def emit(self, record):
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nova.notifier.api.notify('nova.error.publisher', 'error_notification',
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@ -364,42 +222,116 @@ def handle_exception(type, value, tb):
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extra = {}
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if FLAGS.verbose:
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extra['exc_info'] = (type, value, tb)
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logging.root.critical(str(value), **extra)
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def reset():
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"""Resets logging handlers. Should be called if FLAGS changes."""
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for logger in NovaLogger.manager.loggerDict.itervalues():
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if isinstance(logger, NovaLogger):
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logger.setup_from_flags()
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getLogger().critical(str(value), **extra)
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def setup():
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"""Setup nova logging."""
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if not isinstance(logging.root, NovaRootLogger):
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logging._acquireLock()
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for handler in logging.root.handlers:
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logging.root.removeHandler(handler)
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logging.root = NovaRootLogger("nova")
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NovaLogger.root = logging.root
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NovaLogger.manager.root = logging.root
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for logger in NovaLogger.manager.loggerDict.itervalues():
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logger.root = logging.root
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if isinstance(logger, logging.Logger):
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NovaLogger.manager._fixupParents(logger)
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NovaLogger.manager.loggerDict["nova"] = logging.root
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logging._releaseLock()
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sys.excepthook = handle_exception
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reset()
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if FLAGS.log_config:
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try:
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logging.config.fileConfig(FLAGS.log_config)
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except Exception:
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traceback.print_exc()
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raise
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else:
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_setup_logging_from_flags()
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root = logging.root
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logging.setLoggerClass(NovaLogger)
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def _find_facility_from_flags():
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facility_names = logging.handlers.SysLogHandler.facility_names
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facility = getattr(logging.handlers.SysLogHandler,
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FLAGS.syslog_log_facility,
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None)
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if facility is None and FLAGS.syslog_log_facility in facility_names:
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facility = facility_names.get(FLAGS.syslog_log_facility)
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if facility is None:
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valid_facilities = facility_names.keys()
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consts = ['LOG_AUTH', 'LOG_AUTHPRIV', 'LOG_CRON', 'LOG_DAEMON',
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'LOG_FTP', 'LOG_KERN', 'LOG_LPR', 'LOG_MAIL', 'LOG_NEWS',
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'LOG_AUTH', 'LOG_SYSLOG', 'LOG_USER', 'LOG_UUCP',
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'LOG_LOCAL0', 'LOG_LOCAL1', 'LOG_LOCAL2', 'LOG_LOCAL3',
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'LOG_LOCAL4', 'LOG_LOCAL5', 'LOG_LOCAL6', 'LOG_LOCAL7']
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valid_facilities.extend(consts)
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raise TypeError(_('syslog facility must be one of: %s') %
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', '.join("'%s'" % fac
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for fac in valid_facilities))
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return facility
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def audit(msg, *args, **kwargs):
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"""Shortcut for logging to root log with severity 'AUDIT'."""
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logging.root.audit(msg, *args, **kwargs)
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def _setup_logging_from_flags():
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nova_root = getLogger().logger
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for handler in nova_root.handlers:
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nova_root.removeHandler(handler)
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if FLAGS.use_syslog:
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facility = _find_facility_from_flags()
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syslog = logging.handlers.SysLogHandler(address='/dev/log',
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facility=facility)
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nova_root.addHandler(syslog)
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logpath = _get_log_file_path()
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if logpath:
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filelog = logging.handlers.WatchedFileHandler(logpath)
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nova_root.addHandler(filelog)
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mode = int(FLAGS.logfile_mode, 8)
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st = os.stat(logpath)
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if st.st_mode != (stat.S_IFREG | mode):
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os.chmod(logpath, mode)
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if FLAGS.use_stderr:
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streamlog = logging.StreamHandler()
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nova_root.addHandler(streamlog)
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elif not FLAGS.log_file:
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streamlog = logging.StreamHandler(stream=sys.stdout)
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nova_root.addHandler(streamlog)
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if FLAGS.publish_errors:
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nova_root.addHandler(PublishErrorsHandler(logging.ERROR))
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for handler in nova_root.handlers:
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datefmt = FLAGS.log_date_format
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if FLAGS.log_format:
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handler.setFormatter(logging.Formatter(fmt=FLAGS.log_format,
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datefmt=datefmt))
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handler.setFormatter(LegacyNovaFormatter(datefmt=datefmt))
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if FLAGS.verbose or FLAGS.debug:
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nova_root.setLevel(logging.DEBUG)
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else:
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nova_root.setLevel(logging.INFO)
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level = logging.NOTSET
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for pair in FLAGS.default_log_levels:
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mod, _sep, level_name = pair.partition('=')
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level = logging.getLevelName(level_name)
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logger = logging.getLogger(mod)
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logger.setLevel(level)
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# NOTE(jkoelker) Clear the handlers for the root logger that was setup
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# by basicConfig in nova/__init__.py and install the
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# NullHandler.
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root = logging.getLogger()
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for handler in root.handlers:
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root.removeHandler(handler)
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handler = NullHandler()
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handler.setFormatter(logging.Formatter())
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root.addHandler(handler)
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_loggers = {}
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||||
|
||||
def getLogger(name='nova'):
|
||||
if name not in _loggers:
|
||||
_loggers[name] = NovaContextAdapter(logging.getLogger(name))
|
||||
return _loggers[name]
|
||||
|
||||
|
||||
class WritableLogger(object):
|
||||
|
||||
@ -1,4 +1,5 @@
|
||||
import cStringIO
|
||||
import logging
|
||||
|
||||
from nova import context
|
||||
from nova import flags
|
||||
@ -12,47 +13,42 @@ def _fake_context():
|
||||
return context.RequestContext(1, 1)
|
||||
|
||||
|
||||
class RootLoggerTestCase(test.TestCase):
|
||||
class LoggerTestCase(test.TestCase):
|
||||
def setUp(self):
|
||||
super(RootLoggerTestCase, self).setUp()
|
||||
self.log = log.logging.root
|
||||
|
||||
def test_is_nova_instance(self):
|
||||
self.assert_(isinstance(self.log, log.NovaLogger))
|
||||
|
||||
def test_name_is_nova(self):
|
||||
self.assertEqual("nova", self.log.name)
|
||||
super(LoggerTestCase, self).setUp()
|
||||
self.log = log.getLogger()
|
||||
|
||||
def test_handlers_have_nova_formatter(self):
|
||||
formatters = []
|
||||
for h in self.log.handlers:
|
||||
for h in self.log.logger.handlers:
|
||||
f = h.formatter
|
||||
if isinstance(f, log.NovaFormatter):
|
||||
if isinstance(f, log.LegacyNovaFormatter):
|
||||
formatters.append(f)
|
||||
self.assert_(formatters)
|
||||
self.assertEqual(len(formatters), len(self.log.handlers))
|
||||
self.assertEqual(len(formatters), len(self.log.logger.handlers))
|
||||
|
||||
def test_handles_context_kwarg(self):
|
||||
self.log.info("foo", context=_fake_context())
|
||||
self.assert_(True) # didn't raise exception
|
||||
|
||||
def test_module_level_methods_handle_context_arg(self):
|
||||
log.info("foo", context=_fake_context())
|
||||
self.assert_(True) # didn't raise exception
|
||||
|
||||
def test_module_level_audit_handles_context_arg(self):
|
||||
log.audit("foo", context=_fake_context())
|
||||
def test_audit_handles_context_arg(self):
|
||||
self.log.audit("foo", context=_fake_context())
|
||||
self.assert_(True) # didn't raise exception
|
||||
|
||||
def test_will_be_verbose_if_verbose_flag_set(self):
|
||||
self.flags(verbose=True)
|
||||
log.reset()
|
||||
self.assertEqual(log.DEBUG, self.log.level)
|
||||
log.setup()
|
||||
self.assertEqual(logging.DEBUG, self.log.logger.getEffectiveLevel())
|
||||
|
||||
def test_will_not_be_verbose_if_verbose_flag_not_set(self):
|
||||
self.flags(verbose=False)
|
||||
log.reset()
|
||||
self.assertEqual(log.INFO, self.log.level)
|
||||
log.setup()
|
||||
self.assertEqual(logging.INFO, self.log.logger.getEffectiveLevel())
|
||||
|
||||
def test_no_logging_via_module(self):
|
||||
for func in ('critical', 'error', 'exception', 'warning', 'warn',
|
||||
'info', 'debug', 'log', 'audit'):
|
||||
self.assertRaises(AttributeError, getattr, log, func)
|
||||
|
||||
|
||||
class LogHandlerTestCase(test.TestCase):
|
||||
@ -84,16 +80,17 @@ class NovaFormatterTestCase(test.TestCase):
|
||||
"[%(request_id)s]: %(message)s",
|
||||
logging_default_format_string="NOCTXT: %(message)s",
|
||||
logging_debug_format_suffix="--DBG")
|
||||
self.log = log.logging.root
|
||||
self.log = log.getLogger()
|
||||
self.stream = cStringIO.StringIO()
|
||||
self.handler = log.StreamHandler(self.stream)
|
||||
self.log.addHandler(self.handler)
|
||||
self.level = self.log.level
|
||||
self.log.setLevel(log.DEBUG)
|
||||
self.handler = logging.StreamHandler(self.stream)
|
||||
self.handler.setFormatter(log.LegacyNovaFormatter())
|
||||
self.log.logger.addHandler(self.handler)
|
||||
self.level = self.log.logger.getEffectiveLevel()
|
||||
self.log.logger.setLevel(logging.DEBUG)
|
||||
|
||||
def tearDown(self):
|
||||
self.log.setLevel(self.level)
|
||||
self.log.removeHandler(self.handler)
|
||||
self.log.logger.setLevel(self.level)
|
||||
self.log.logger.removeHandler(self.handler)
|
||||
super(NovaFormatterTestCase, self).tearDown()
|
||||
|
||||
def test_uncontextualized_log(self):
|
||||
@ -118,11 +115,12 @@ class NovaLoggerTestCase(test.TestCase):
|
||||
levels.append("nova-test=AUDIT")
|
||||
self.flags(default_log_levels=levels,
|
||||
verbose=True)
|
||||
log.setup()
|
||||
self.log = log.getLogger('nova-test')
|
||||
|
||||
def test_has_level_from_flags(self):
|
||||
self.assertEqual(log.AUDIT, self.log.level)
|
||||
self.assertEqual(logging.AUDIT, self.log.logger.getEffectiveLevel())
|
||||
|
||||
def test_child_log_has_level_of_parent_flag(self):
|
||||
l = log.getLogger('nova-test.foo')
|
||||
self.assertEqual(log.AUDIT, l.level)
|
||||
self.assertEqual(logging.AUDIT, l.logger.getEffectiveLevel())
|
||||
|
||||
@ -105,7 +105,7 @@ class NotifierTestCase(test.TestCase):
|
||||
'nova.notifier.rabbit_notifier')
|
||||
self.stubs.Set(nova.flags.FLAGS, 'publish_errors', True)
|
||||
LOG = log.getLogger('nova')
|
||||
LOG.setup_from_flags()
|
||||
log.setup()
|
||||
msgs = []
|
||||
|
||||
def mock_notify(context, topic, data):
|
||||
|
||||
@ -280,14 +280,11 @@ class DriverTestCase(test.TestCase):
|
||||
|
||||
log = logging.getLogger()
|
||||
self.stream = cStringIO.StringIO()
|
||||
log.addHandler(logging.StreamHandler(self.stream))
|
||||
log.logger.addHandler(logging.logging.StreamHandler(self.stream))
|
||||
|
||||
inst = {}
|
||||
self.instance_id = db.instance_create(self.context, inst)['id']
|
||||
|
||||
def tearDown(self):
|
||||
super(DriverTestCase, self).tearDown()
|
||||
|
||||
def _attach_volume(self):
|
||||
"""Attach volumes to an instance. This function also sets
|
||||
a fake log message."""
|
||||
@ -304,12 +301,6 @@ class VolumeDriverTestCase(DriverTestCase):
|
||||
"""Test case for VolumeDriver"""
|
||||
driver_name = "nova.volume.driver.VolumeDriver"
|
||||
|
||||
def setUp(self):
|
||||
super(VolumeDriverTestCase, self).setUp()
|
||||
|
||||
def tearDown(self):
|
||||
super(VolumeDriverTestCase, self).tearDown()
|
||||
|
||||
def test_delete_busy_volume(self):
|
||||
"""Test deleting a busy volume."""
|
||||
self.stubs.Set(self.volume.driver, '_volume_not_present',
|
||||
@ -332,12 +323,6 @@ class ISCSITestCase(DriverTestCase):
|
||||
"""Test Case for ISCSIDriver"""
|
||||
driver_name = "nova.volume.driver.ISCSIDriver"
|
||||
|
||||
def setUp(self):
|
||||
super(ISCSITestCase, self).setUp()
|
||||
|
||||
def tearDown(self):
|
||||
super(ISCSITestCase, self).tearDown()
|
||||
|
||||
def _attach_volume(self):
|
||||
"""Attach volumes to an instance. This function also sets
|
||||
a fake log message."""
|
||||
|
||||
@ -1118,7 +1118,9 @@ def save_and_reraise_exception():
|
||||
try:
|
||||
yield
|
||||
except Exception:
|
||||
LOG.exception(_('Original exception being dropped'),
|
||||
# NOTE(jkoelker): Using LOG.error here since it accepts exc_info
|
||||
# as a kwargs.
|
||||
LOG.error(_('Original exception being dropped'),
|
||||
exc_info=(type_, value, traceback))
|
||||
raise
|
||||
raise type_, value, traceback
|
||||
|
||||
Loading…
Reference in New Issue
Block a user