d4c3047ba4
Implements blueprint embrane-neutron-plugin This commit implements the main Embrane plugin, which covers route and extratoute extensions. The plugin will rely on existing plugins for leveraging L2 networks, for now it only supports OpenVSwitch and vlan networks, but more supports are to come if the model is approved (or a different one is suggested). Change-Id: I90aff8ec4324bd3a7c59c411374db6a118d1a72b
52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Embrane, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Ivar Lazzaro, Embrane, Inc.
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class Operation(object):
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"""Defines a series of operations which shall be executed in order.
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the operations expected are procedures, return values are discarded
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"""
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def __init__(self, procedure, args=(), kwargs={}, nextop=None):
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self._procedure = procedure
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self.args = args[:]
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self.kwargs = dict(kwargs)
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self.nextop = nextop
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def execute(self):
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args = self.args
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self._procedure(*args, **self.kwargs)
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return self.nextop
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def execute_all(self):
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nextop = self.execute()
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while nextop:
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nextop = self.execute_all()
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def has_next(self):
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return self.nextop is not None
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def add_bottom_operation(self, operation):
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op = self
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while op.has_next():
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op = op.nextop
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op.nextop = operation
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