Exemplo n.º 1
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    def get_schema(cls, resource_name, operation):
        """Returns the schema for an operation

        :param resource_name: Operation for which resource need
        to be validated.
        :type operation: `six.text_type`

        :param operation: Operation for which params need
        to be validated.
        :type operation: `six.text_type`

        :returns: Operation's schema
        :rtype: dict

        :raises: `errors.InvalidResource` if the resource
        does not exist and `errors.InvalidOperation` if the operation
        does not exist
        """
        try:
            resource_schemas = cls.schema[resource_name]
        except KeyError:
            # TODO(tonytan4ever): gettext support
            msg = _('{0} is not a valid resource name').format(resource_name)
            raise errors.InvalidResourceName(msg)

        try:
            return resource_schemas[operation]
        except KeyError:
            # TODO(tonytan4ever): gettext support
            msg = _('{0} is not a valid operation for resource: {1}').format(
                operation, resource_name)
            raise errors.InvalidOperation(msg)
Exemplo n.º 2
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    def get_schema(cls, resource_name, operation):
        """Returns the schema for an operation
        :param resource_name: Operation for which resource need
        to be validated.
        :type operation: `six.text_type`

        :param operation: Operation for which params need
        to be validated.
        :type operation: `six.text_type`

        :returns: Operation's schema
        :rtype: dict

        :raises: `errors.InvalidResource` if the resource
        does not exist and `errors.InvalidOperation` if the operation
        does not exist
        """
        try:
            resource_schemas = cls.schema[resource_name]
        except KeyError:
            # TODO(tonytan4ever): gettext support
            msg = _('{0} is not a valid resource name').format(resource_name)
            raise errors.InvalidResourceName(msg)

        try:
            return resource_schemas[operation]
        except KeyError:
            # TODO(tonytan4ever): gettext support
            msg = _('{0} is not a valid operation for resource: {1}').format(
                operation,
                resource_name)
            raise errors.InvalidOperation(msg)
Exemplo n.º 3
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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)
Exemplo n.º 4
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def bool_from_string(subject, strict=False, default=False):
    """Interpret a string as a boolean.

    A case-insensitive match is performed such that strings matching 't',
    'true', 'on', 'y', 'yes', or '1' are considered True and, when
    `strict=False`, anything else returns the value specified by 'default'.

    Useful for JSON-decoded stuff and config file parsing.

    If `strict=True`, unrecognized values, including None, will raise a
    ValueError which is useful when parsing values passed in from an API call.
    Strings yielding False are 'f', 'false', 'off', 'n', 'no', or '0'.
    """
    if not isinstance(subject, six.string_types):
        subject = six.text_type(subject)

    lowered = subject.strip().lower()

    if lowered in TRUE_STRINGS:
        return True
    elif lowered in FALSE_STRINGS:
        return False
    elif strict:
        acceptable = ", ".join("'%s'" % s for s in sorted(TRUE_STRINGS + FALSE_STRINGS))
        msg = _("Unrecognized value '%(val)s', acceptable values are:" " %(acceptable)s") % {
            "val": subject,
            "acceptable": acceptable,
        }
        raise ValueError(msg)
    else:
        return default
Exemplo n.º 5
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def bool_from_string(subject, strict=False, default=False):
    """Interpret a string as a boolean.

    A case-insensitive match is performed such that strings matching 't',
    'true', 'on', 'y', 'yes', or '1' are considered True and, when
    `strict=False`, anything else returns the value specified by 'default'.

    Useful for JSON-decoded stuff and config file parsing.

    If `strict=True`, unrecognized values, including None, will raise a
    ValueError which is useful when parsing values passed in from an API call.
    Strings yielding False are 'f', 'false', 'off', 'n', 'no', or '0'.
    """
    if not isinstance(subject, six.string_types):
        subject = six.text_type(subject)

    lowered = subject.strip().lower()

    if lowered in TRUE_STRINGS:
        return True
    elif lowered in FALSE_STRINGS:
        return False
    elif strict:
        acceptable = ', '.join("'%s'" % s
                               for s in sorted(TRUE_STRINGS + FALSE_STRINGS))
        msg = _("Unrecognized value '%(val)s', acceptable values are:"
                " %(acceptable)s") % {
                    'val': subject,
                    'acceptable': acceptable
                }
        raise ValueError(msg)
    else:
        return default
Exemplo n.º 6
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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)
Exemplo n.º 7
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def string_to_bytes(text, unit_system="IEC", return_int=False):
    """Converts a string into an float representation of bytes.

    The units supported for IEC ::

        Kb(it), Kib(it), Mb(it), Mib(it), Gb(it), Gib(it), Tb(it), Tib(it)
        KB, KiB, MB, MiB, GB, GiB, TB, TiB

    The units supported for SI ::

        kb(it), Mb(it), Gb(it), Tb(it)
        kB, MB, GB, TB

    Note that the SI unit system does not support capital letter 'K'

    :param text: String input for bytes size conversion.
    :param unit_system: Unit system for byte size conversion.
    :param return_int: If True, returns integer representation of text
                       in bytes. (default: decimal)
    :returns: Numerical representation of text in bytes.
    :raises ValueError: If text has an invalid value.

    """
    try:
        base, reg_ex = UNIT_SYSTEM_INFO[unit_system]
    except KeyError:
        msg = _('Invalid unit system: "%s"') % unit_system
        raise ValueError(msg)
    match = reg_ex.match(text)
    if match:
        magnitude = float(match.group(1))
        unit_prefix = match.group(2)
        if match.group(3) in ["b", "bit"]:
            magnitude /= 8
    else:
        msg = _("Invalid string format: %s") % text
        raise ValueError(msg)
    if not unit_prefix:
        res = magnitude
    else:
        res = magnitude * pow(base, UNIT_PREFIX_EXPONENT[unit_prefix])
    if return_int:
        return int(math.ceil(res))
    return res
Exemplo n.º 8
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def string_to_bytes(text, unit_system='IEC', return_int=False):
    """Converts a string into an float representation of bytes.

    The units supported for IEC ::

        Kb(it), Kib(it), Mb(it), Mib(it), Gb(it), Gib(it), Tb(it), Tib(it)
        KB, KiB, MB, MiB, GB, GiB, TB, TiB

    The units supported for SI ::

        kb(it), Mb(it), Gb(it), Tb(it)
        kB, MB, GB, TB

    Note that the SI unit system does not support capital letter 'K'

    :param text: String input for bytes size conversion.
    :param unit_system: Unit system for byte size conversion.
    :param return_int: If True, returns integer representation of text
                       in bytes. (default: decimal)
    :returns: Numerical representation of text in bytes.
    :raises ValueError: If text has an invalid value.

    """
    try:
        base, reg_ex = UNIT_SYSTEM_INFO[unit_system]
    except KeyError:
        msg = _('Invalid unit system: "%s"') % unit_system
        raise ValueError(msg)
    match = reg_ex.match(text)
    if match:
        magnitude = float(match.group(1))
        unit_prefix = match.group(2)
        if match.group(3) in ['b', 'bit']:
            magnitude /= 8
    else:
        msg = _('Invalid string format: %s') % text
        raise ValueError(msg)
    if not unit_prefix:
        res = magnitude
    else:
        res = magnitude * pow(base, UNIT_PREFIX_EXPONENT[unit_prefix])
    if return_int:
        return int(math.ceil(res))
    return res
Exemplo n.º 9
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    def _wrapper():
        atexit.register(_enable_echo, True)
        _enable_echo(True)

        try:
            logging.setup('poppy')
            func()
        except KeyboardInterrupt:
            LOG.info(_(u'Terminating'))
        except Exception as ex:
            _fail(1, ex)
Exemplo n.º 10
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    def _wrapper():
        atexit.register(_enable_echo, True)
        _enable_echo(False)

        try:
            logging.setup('poppy')
            func()
        except KeyboardInterrupt:
            LOG.info(_(u'Terminating'))
        except Exception as ex:
            _fail(1, ex)
Exemplo n.º 11
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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)
Exemplo n.º 12
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    def _wrapper():
        atexit.register(_enable_echo, True)
        _enable_echo(True)

        try:
            conf = cfg.CONF
            log.register_options(conf)
            log.setup(conf, 'poppy')
            func()
        except KeyboardInterrupt:
            LOG.info(_(u'Terminating'))
        except Exception as ex:
            _fail(1, ex)
Exemplo n.º 13
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    def _wrapper():
        atexit.register(_enable_echo, True)
        _enable_echo(True)

        try:
            conf = cfg.CONF
            log.register_options(conf)
            log.setup(conf, 'poppy')
            func()
        except KeyboardInterrupt:
            LOG.info(_(u'Terminating'))
        except Exception as ex:
            _fail(1, ex)
Exemplo n.º 14
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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
Exemplo n.º 15
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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
Exemplo n.º 16
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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))