59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
# 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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'''Port binding lookup
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Logical port objects have binding field that describe where and how a port is
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bound. An application can decide to augment this field locally, e.g.
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* Trunk subport is not bound, but trunk app will bind those on the same chassis
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as the parent port.
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* Same with DNAT app: floating port will be bound similartly as the target port
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This module serves as a global lookup for all apps.
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'''
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_locations = {}
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def reset():
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_locations.clear()
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def set_port_binding(lport, binding):
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_locations[lport.id] = binding
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def copy_port_binding(lport, source):
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set_port_binding(lport, get_port_binding(source))
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def clear_port_binding(lport):
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_locations.pop(lport.id)
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def get_port_binding(lport):
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return _locations.get(lport.id, lport.binding)
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def is_port_local(lport):
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binding = get_port_binding(lport)
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if binding is not None:
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return binding.is_local
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return False
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def is_port_remote(lport):
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binding = get_port_binding(lport)
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if binding is not None:
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return not binding.is_local
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return False
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