Ejemplo n.º 1
0
    def deprecated(self, msg, *args, **kwargs):
        """Call this method when a deprecated feature is used.

        If the system is configured for fatal deprecations then the message
        is logged at the 'critical' level and :class:`DeprecatedConfig` will
        be raised.

        Otherwise, the message will be logged (once) at the 'warn' level.

        :raises: :class:`DeprecatedConfig` if the system is configured for
                 fatal deprecations.

        """
        stdmsg = _("Deprecated: %s") % msg
        if CONF.fatal_deprecations:
            self.critical(stdmsg, *args, **kwargs)
            raise DeprecatedConfig(msg=stdmsg)

        # Using a list because a tuple with dict can't be stored in a set.
        sent_args = self._deprecated_messages_sent.setdefault(msg, list())

        if args in sent_args:
            # Already logged this message, so don't log it again.
            return

        sent_args.append(args)
        self.warn(stdmsg, *args, **kwargs)
Ejemplo n.º 2
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    def acquire(self):
        basedir = os.path.dirname(self.fname)

        if not os.path.exists(basedir):
            fileutils.ensure_tree(basedir)
            LOG.info(_LI('Created lock path: %s'), basedir)

        self.lockfile = open(self.fname, 'w')

        while True:
            try:
                # Using non-blocking locks since green threads are not
                # patched to deal with blocking locking calls.
                # Also upon reading the MSDN docs for locking(), it seems
                # to have a laughable 10 attempts "blocking" mechanism.
                self.trylock()
                LOG.debug('Got file lock "%s"', self.fname)
                return True
            except IOError as e:
                if e.errno in (errno.EACCES, errno.EAGAIN):
                    # external locks synchronise things like iptables
                    # updates - give it some time to prevent busy spinning
                    time.sleep(0.01)
                else:
                    raise threading.ThreadError(_("Unable to acquire lock on"
                                                  " `%(filename)s` due to"
                                                  " %(exception)s") %
                                                {'filename': self.fname,
                                                    'exception': e})
Ejemplo n.º 3
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    def acquire(self):
        basedir = os.path.dirname(self.fname)

        if not os.path.exists(basedir):
            fileutils.ensure_tree(basedir)
            LOG.info(_LI('Created lock path: %s'), basedir)

        self.lockfile = open(self.fname, 'w')

        while True:
            try:
                # Using non-blocking locks since green threads are not
                # patched to deal with blocking locking calls.
                # Also upon reading the MSDN docs for locking(), it seems
                # to have a laughable 10 attempts "blocking" mechanism.
                self.trylock()
                LOG.debug('Got file lock "%s"', self.fname)
                return True
            except IOError as e:
                if e.errno in (errno.EACCES, errno.EAGAIN):
                    # external locks synchronise things like iptables
                    # updates - give it some time to prevent busy spinning
                    time.sleep(0.01)
                else:
                    raise threading.ThreadError(
                        _("Unable to acquire lock on"
                          " `%(filename)s` due to"
                          " %(exception)s") % {
                              'filename': self.fname,
                              'exception': e
                          })
Ejemplo n.º 4
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    def deprecated(self, msg, *args, **kwargs):
        """Call this method when a deprecated feature is used.

        If the system is configured for fatal deprecations then the message
        is logged at the 'critical' level and :class:`DeprecatedConfig` will
        be raised.

        Otherwise, the message will be logged (once) at the 'warn' level.

        :raises: :class:`DeprecatedConfig` if the system is configured for
                 fatal deprecations.

        """
        stdmsg = _("Deprecated: %s") % msg
        if CONF.fatal_deprecations:
            self.critical(stdmsg, *args, **kwargs)
            raise DeprecatedConfig(msg=stdmsg)

        # Using a list because a tuple with dict can't be stored in a set.
        sent_args = self._deprecated_messages_sent.setdefault(msg, list())

        if args in sent_args:
            # Already logged this message, so don't log it again.
            return

        sent_args.append(args)
        self.warn(stdmsg, *args, **kwargs)
Ejemplo n.º 5
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 def read(self, i=None):
     result = self.data.read(i)
     self.bytes_read += len(result)
     if self.bytes_read > self.limit:
         msg = _("Request is too large.")
         raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
     return result
Ejemplo n.º 6
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 def __iter__(self):
     for chunk in self.data:
         self.bytes_read += len(chunk)
         if self.bytes_read > self.limit:
             msg = _("Request is too large.")
             raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
         else:
             yield chunk
Ejemplo n.º 7
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 def __call__(self, req):
     if (req.content_length is not None and
             req.content_length > CONF.max_request_body_size):
         msg = _("Request is too large.")
         raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
     if req.content_length is None and req.is_body_readable:
         limiter = LimitingReader(req.body_file,
                                  CONF.max_request_body_size)
         req.body_file = limiter
     return self.application
Ejemplo n.º 8
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class LogConfigError(Exception):

    message = _('Error loading logging config %(log_config)s: %(err_msg)s')

    def __init__(self, log_config, err_msg):
        self.log_config = log_config
        self.err_msg = err_msg

    def __str__(self):
        return self.message % dict(log_config=self.log_config,
                                   err_msg=self.err_msg)
Ejemplo n.º 9
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    def set_rules(self, rules, overwrite=True, use_conf=False):
        """Create a new Rules object based on the provided dict of rules.

        :param rules: New rules to use. It should be an instance of dict.
        :param overwrite: Whether to overwrite current rules or update them
                          with the new rules.
        :param use_conf: Whether to reload rules from cache or config file.
        """

        if not isinstance(rules, dict):
            raise TypeError(_("Rules must be an instance of dict or Rules, "
                            "got %s instead") % type(rules))
        self.use_conf = use_conf
        if overwrite:
            self.rules = Rules(rules, self.default_rule)
        else:
            self.rules.update(rules)
Ejemplo n.º 10
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def _find_facility_from_conf():
    facility_names = logging.handlers.SysLogHandler.facility_names
    facility = getattr(logging.handlers.SysLogHandler,
                       CONF.syslog_log_facility,
                       None)

    if facility is None and CONF.syslog_log_facility in facility_names:
        facility = facility_names.get(CONF.syslog_log_facility)

    if facility is None:
        valid_facilities = facility_names.keys()
        consts = ['LOG_AUTH', 'LOG_AUTHPRIV', 'LOG_CRON', 'LOG_DAEMON',
                  'LOG_FTP', 'LOG_KERN', 'LOG_LPR', 'LOG_MAIL', 'LOG_NEWS',
                  'LOG_AUTH', 'LOG_SYSLOG', 'LOG_USER', 'LOG_UUCP',
                  'LOG_LOCAL0', 'LOG_LOCAL1', 'LOG_LOCAL2', 'LOG_LOCAL3',
                  'LOG_LOCAL4', 'LOG_LOCAL5', 'LOG_LOCAL6', 'LOG_LOCAL7']
        valid_facilities.extend(consts)
        raise TypeError(_('syslog facility must be one of: %s') %
                        ', '.join("'%s'" % fac
                                  for fac in valid_facilities))

    return facility
Ejemplo n.º 11
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def _find_facility_from_conf():
    facility_names = logging.handlers.SysLogHandler.facility_names
    facility = getattr(logging.handlers.SysLogHandler, CONF.syslog_log_facility, None)

    if facility is None and CONF.syslog_log_facility in facility_names:
        facility = facility_names.get(CONF.syslog_log_facility)

    if facility is None:
        valid_facilities = facility_names.keys()
        consts = [
            "LOG_AUTH",
            "LOG_AUTHPRIV",
            "LOG_CRON",
            "LOG_DAEMON",
            "LOG_FTP",
            "LOG_KERN",
            "LOG_LPR",
            "LOG_MAIL",
            "LOG_NEWS",
            "LOG_AUTH",
            "LOG_SYSLOG",
            "LOG_USER",
            "LOG_UUCP",
            "LOG_LOCAL0",
            "LOG_LOCAL1",
            "LOG_LOCAL2",
            "LOG_LOCAL3",
            "LOG_LOCAL4",
            "LOG_LOCAL5",
            "LOG_LOCAL6",
            "LOG_LOCAL7",
        ]
        valid_facilities.extend(consts)
        raise TypeError(_("syslog facility must be one of: %s") % ", ".join("'%s'" % fac for fac in valid_facilities))

    return facility
Ejemplo n.º 12
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 def __init__(self, rule):
     msg = _("Policy doesn't allow %s to be performed.") % rule
     super(PolicyNotAuthorized, self).__init__(msg)
Ejemplo n.º 13
0
from oslo.config import cfg
from oslo.serialization import jsonutils
import six
import six.moves.urllib.parse as urlparse
import six.moves.urllib.request as urlrequest

from congress.openstack.common import fileutils
from congress.openstack.common._i18n import _, _LE, _LW
from congress.openstack.common import log as logging


policy_opts = [
    cfg.StrOpt('policy_file',
               default='policy.json',
               help=_('The JSON file that defines policies.')),
    cfg.StrOpt('policy_default_rule',
               default='default',
               help=_('Default rule. Enforced when a requested rule is not '
                      'found.')),
    cfg.MultiStrOpt('policy_dirs',
                    default=['policy.d'],
                    help=_('The directories of policy configuration files is '
                           'stored')),
]

CONF = cfg.CONF
CONF.register_opts(policy_opts)

LOG = logging.getLogger(__name__)
Ejemplo n.º 14
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class DeprecatedConfig(Exception):
    message = _("Fatal call to deprecated config: %(msg)s")

    def __init__(self, msg):
        super(Exception, self).__init__(self.message % dict(msg=msg))
Ejemplo n.º 15
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class deprecated(object):
    """A decorator to mark callables as deprecated.

    This decorator logs a deprecation message when the callable it decorates is
    used. The message will include the release where the callable was
    deprecated, the release where it may be removed and possibly an optional
    replacement.

    Examples:

    1. Specifying the required deprecated release

    >>> @deprecated(as_of=deprecated.ICEHOUSE)
    ... def a(): pass

    2. Specifying a replacement:

    >>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()')
    ... def b(): pass

    3. Specifying the release where the functionality may be removed:

    >>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=+1)
    ... def c(): pass

    4. Specifying the deprecated functionality will not be removed:
    >>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=0)
    ... def d(): pass

    5. Specifying a replacement, deprecated functionality will not be removed:
    >>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()', remove_in=0)
    ... def e(): pass

    """

    # NOTE(morganfainberg): Bexar is used for unit test purposes, it is
    # expected we maintain a gap between Bexar and Folsom in this list.
    BEXAR = 'B'
    FOLSOM = 'F'
    GRIZZLY = 'G'
    HAVANA = 'H'
    ICEHOUSE = 'I'
    JUNO = 'J'
    KILO = 'K'

    _RELEASES = {
        # NOTE(morganfainberg): Bexar is used for unit test purposes, it is
        # expected we maintain a gap between Bexar and Folsom in this list.
        'B': 'Bexar',
        'F': 'Folsom',
        'G': 'Grizzly',
        'H': 'Havana',
        'I': 'Icehouse',
        'J': 'Juno',
        'K': 'Kilo',
    }

    _deprecated_msg_with_alternative = _(
        '%(what)s is deprecated as of %(as_of)s in favor of '
        '%(in_favor_of)s and may be removed in %(remove_in)s.')

    _deprecated_msg_no_alternative = _(
        '%(what)s is deprecated as of %(as_of)s and may be '
        'removed in %(remove_in)s. It will not be superseded.')

    _deprecated_msg_with_alternative_no_removal = _(
        '%(what)s is deprecated as of %(as_of)s in favor of %(in_favor_of)s.')

    _deprecated_msg_with_no_alternative_no_removal = _(
        '%(what)s is deprecated as of %(as_of)s. It will not be superseded.')

    def __init__(self, as_of, in_favor_of=None, remove_in=2, what=None):
        """Initialize decorator

        :param as_of: the release deprecating the callable. Constants
            are define in this class for convenience.
        :param in_favor_of: the replacement for the callable (optional)
        :param remove_in: an integer specifying how many releases to wait
            before removing (default: 2)
        :param what: name of the thing being deprecated (default: the
            callable's name)

        """
        self.as_of = as_of
        self.in_favor_of = in_favor_of
        self.remove_in = remove_in
        self.what = what

    def __call__(self, func_or_cls):
        if not self.what:
            self.what = func_or_cls.__name__ + '()'
        msg, details = self._build_message()

        if inspect.isfunction(func_or_cls):

            @six.wraps(func_or_cls)
            def wrapped(*args, **kwargs):
                LOG.deprecated(msg, details)
                return func_or_cls(*args, **kwargs)

            return wrapped
        elif inspect.isclass(func_or_cls):
            orig_init = func_or_cls.__init__

            # TODO(tsufiev): change `functools` module to `six` as
            # soon as six 1.7.4 (with fix for passing `assigned`
            # argument to underlying `functools.wraps`) is released
            # and added to the congress-incubator requrements
            @functools.wraps(orig_init, assigned=('__name__', '__doc__'))
            def new_init(self, *args, **kwargs):
                LOG.deprecated(msg, details)
                orig_init(self, *args, **kwargs)

            func_or_cls.__init__ = new_init
            return func_or_cls
        else:
            raise TypeError('deprecated can be used only with functions or '
                            'classes')

    def _get_safe_to_remove_release(self, release):
        # TODO(dstanek): this method will have to be reimplemented once
        #    when we get to the X release because once we get to the Y
        #    release, what is Y+2?
        new_release = chr(ord(release) + self.remove_in)
        if new_release in self._RELEASES:
            return self._RELEASES[new_release]
        else:
            return new_release

    def _build_message(self):
        details = dict(what=self.what,
                       as_of=self._RELEASES[self.as_of],
                       remove_in=self._get_safe_to_remove_release(self.as_of))

        if self.in_favor_of:
            details['in_favor_of'] = self.in_favor_of
            if self.remove_in > 0:
                msg = self._deprecated_msg_with_alternative
            else:
                # There are no plans to remove this function, but it is
                # now deprecated.
                msg = self._deprecated_msg_with_alternative_no_removal
        else:
            if self.remove_in > 0:
                msg = self._deprecated_msg_no_alternative
            else:
                # There are no plans to remove this function, but it is
                # now deprecated.
                msg = self._deprecated_msg_with_no_alternative_no_removal
        return msg, details