65 lines
1.9 KiB
Python
65 lines
1.9 KiB
Python
# Copyright (C) 2011 Nippon Telegraph and Telephone Corporation.
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# Copyright (C) 2011 Isaku Yamahata <yamahata at valinux co jp>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import inspect
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import logging
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import os
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import sys
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LOG = logging.getLogger('ryu.utils')
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def import_module(modname):
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__import__(modname)
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return sys.modules[modname]
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def import_object(modname):
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try:
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return import_module(modname)
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except ImportError:
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(from_mod, _sep, target) = modname.rpartition('.')
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mod = import_module(from_mod)
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return getattr(mod, target)
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RYU_DEFAULT_FLAG_FILE = ('ryu.conf', 'etc/ryu/ryu.conf' '/etc/ryu/ryu.conf')
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def find_flagfile(default_path=RYU_DEFAULT_FLAG_FILE):
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if '--flagfile' in sys.argv:
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return
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script_dir = os.path.dirname(inspect.stack()[-1][1])
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for filename in default_path:
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if not os.path.isabs(filename):
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if os.path.exists(filename):
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# try relative to current path
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filename = os.path.abspath(filename)
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elif os.path.exists(os.path.join(script_dir, filename)):
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# try relative to script dir
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filename = os.path.join(script_dir, filename)
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if not os.path.exists(filename):
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continue
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flagfile = '--flagfile=%s' % filename
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sys.argv.insert(1, flagfile)
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LOG.debug('flagfile = %s', filename)
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return
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