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-rw-r--r--lmi/scripts/common/__init__.py73
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diff --git a/lmi/scripts/common/__init__.py b/lmi/scripts/common/__init__.py
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-# Copyright (C) 2013-2014 Red Hat, Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-#
-# 1. Redistributions of source code must retain the above copyright notice,
-# this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright notice,
-# this list of conditions and the following disclaimer in the documentation
-# and/or other materials provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-# The views and conclusions contained in the software and documentation are
-# those of the authors and should not be interpreted as representing official
-# policies, either expressed or implied, of the FreeBSD Project.
-#
-# Authors: Michal Minar <miminar@redhat.com>
-#
-"""
-Package with client-side python modules and command line utilities.
-"""
-
-import logging
-
-from lmi.shell import LMINamespace
-from lmi.shell import LMIExceptions
-from lmi.scripts.common.configuration import Configuration
-from lmi.scripts.common.lmi_logging import get_logger
-
-LOG = get_logger(__name__)
-
-def get_computer_system(ns):
- """
- Obtain an instance of ``CIM_ComputerSystem`` or its subclass. Preferred
- class name can be configured in configuration file. If such class does
- not exist, a base class (``CIM_ComputerSystem``) is enumerated instead.
- First feasible instance is cached and returned.
-
- :param ns: Namespace object where to look for computer system class.
- :type ns: :py:class:`lmi.shell.LMINamespace`
- :returns: Instance of ``CIM_ComputerSystem``.
- :rtype: :py:class:`lmi.shell.LMIInstance`.
- """
- if not isinstance(ns, LMINamespace):
- raise TypeError("ns must be an instance of LMINamespace")
- if not hasattr(get_computer_system, '_cs_cache'):
- get_computer_system._cs_cache = {}
- ns_path = ns.connection.uri + '/' + ns.name
- if not ns_path in get_computer_system._cs_cache:
- config = Configuration.get_instance()
- try:
- get_computer_system._cs_cache[ns_path] = cs = \
- getattr(ns, config.system_class_name).first_instance()
- except LMIExceptions.LMIClassNotFound:
- LOG().warn('Failed to get instance of %s on host "%s"'
- ' - falling back to CIM_ComputerSystem.',
- config.system_class_name, ns.connection.uri)
- get_computer_system._cs_cache[ns_path] = cs = \
- ns.CIM_ComputerSystem.first_instance_name()
- LOG().debug('Loaded instance of %s:%s for host "%s".',
- ns.name, cs.classname, ns.connection.uri)
- return get_computer_system._cs_cache[ns_path]