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91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
# This code is part of Ansible, but is an independent component.
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# This particular file snippet, and this file snippet only, is BSD licensed.
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# Modules you write using this snippet, which is embedded dynamically by Ansible
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# still belong to the author of the module, and may assign their own license
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# to the complete work.
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#
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# (c) 2018 Red Hat Inc.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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import re
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class InterfaceConfiguration:
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def __init__(self):
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self.commands = []
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self.merged = False
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def has_same_commands(self, interface):
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len1 = len(self.commands)
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len2 = len(interface.commands)
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return len1 == len2 and len1 == len(frozenset(self.commands).intersection(interface.commands))
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def merge_interfaces(interfaces):
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""" to reduce commands generated by an edgeswitch module
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we take interfaces one by one and we try to merge them with neighbors if everyone has same commands to run
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"""
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merged = {}
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for i, interface in interfaces.items():
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if interface.merged:
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continue
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interface.merged = True
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match = re.match(r'(\d+)\/(\d+)', i)
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group = int(match.group(1))
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start = int(match.group(2))
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end = start
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while True:
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try:
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start = start - 1
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key = '{0}/{1}'.format(group, start)
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neighbor = interfaces[key]
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if not neighbor.merged and interface.has_same_commands(neighbor):
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neighbor.merged = True
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else:
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break
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except KeyError:
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break
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start = start + 1
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while True:
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try:
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end = end + 1
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key = '{0}/{1}'.format(group, end)
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neighbor = interfaces[key]
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if not neighbor.merged and interface.has_same_commands(neighbor):
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neighbor.merged = True
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else:
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break
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except KeyError:
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break
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end = end - 1
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if end == start:
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key = '{0}/{1}'.format(group, start)
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else:
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key = '{0}/{1}-{2}/{3}'.format(group, start, group, end)
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merged[key] = interface
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return merged
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