84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
# Copyright 2016 Cloudbase Solutions.
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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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import netifaces
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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OPTS = []
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class IPWrapper(object):
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def get_device_by_ip(self, ip):
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if not ip:
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return
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for device in self.get_devices():
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if device.device_has_ip(ip):
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return device
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def get_devices(self):
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try:
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return [IPDevice(iface) for iface in netifaces.interfaces()]
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except (OSError, MemoryError):
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LOG.error("Failed to get network interfaces.")
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return []
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class IPDevice(object):
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def __init__(self, name):
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self.name = name
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self.link = IPLink(self)
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def read_ifaddresses(self):
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try:
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device_addresses = netifaces.ifaddresses(self.name)
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except ValueError:
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LOG.error("The device does not exist on the system: %s.",
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self.name)
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return
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except OSError:
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LOG.error("Failed to get interface addresses: %s.",
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self.name)
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return
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return device_addresses
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def device_has_ip(self, ip):
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device_addresses = self.read_ifaddresses()
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if device_addresses is None:
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return False
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addresses = [ip_addr['addr'] for ip_addr in
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device_addresses.get(netifaces.AF_INET, [])]
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return ip in addresses
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class IPLink(object):
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def __init__(self, parent):
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self._parent = parent
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@property
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def address(self):
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device_addresses = self._parent.read_ifaddresses()
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if device_addresses is None:
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return False
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return [eth_addr['addr'] for eth_addr in
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device_addresses.get(netifaces.AF_LINK, [])]
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