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Viewing changes to charmhelpers/contrib/network/ip.py

  • Committer: Liam Young
  • Date: 2016-01-28 09:03:50 UTC
  • Revision ID: liam.young@canonical.com-20160128090350-tl7hj01pgi0r28im
16.01 Charm release

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charmhelpers/contrib/network/ip.py
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def no_ip_found_error_out(network):
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    errmsg = ("No IP address found in network: %s" % network)
 
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    errmsg = ("No IP address found in network(s): %s" % network)
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    raise ValueError(errmsg)
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    """Get an IPv4 or IPv6 address within the network from the host.
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    :param network (str): CIDR presentation format. For example,
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        '192.168.1.0/24'.
 
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        '192.168.1.0/24'. Supports multiple networks as a space-delimited list.
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    :param fallback (str): If no address is found, return fallback.
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    :param fatal (boolean): If no address is found, fallback is not
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        set and fatal is True then exit(1).
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        else:
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            return None
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    _validate_cidr(network)
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    network = netaddr.IPNetwork(network)
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    for iface in netifaces.interfaces():
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        addresses = netifaces.ifaddresses(iface)
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        if network.version == 4 and netifaces.AF_INET in addresses:
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            addr = addresses[netifaces.AF_INET][0]['addr']
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            netmask = addresses[netifaces.AF_INET][0]['netmask']
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            cidr = netaddr.IPNetwork("%s/%s" % (addr, netmask))
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            if cidr in network:
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                return str(cidr.ip)
 
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    networks = network.split() or [network]
 
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    for network in networks:
 
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        _validate_cidr(network)
 
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        network = netaddr.IPNetwork(network)
 
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        for iface in netifaces.interfaces():
 
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            addresses = netifaces.ifaddresses(iface)
 
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            if network.version == 4 and netifaces.AF_INET in addresses:
 
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                addr = addresses[netifaces.AF_INET][0]['addr']
 
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                netmask = addresses[netifaces.AF_INET][0]['netmask']
 
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                cidr = netaddr.IPNetwork("%s/%s" % (addr, netmask))
 
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                if cidr in network:
 
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                    return str(cidr.ip)
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        if network.version == 6 and netifaces.AF_INET6 in addresses:
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            for addr in addresses[netifaces.AF_INET6]:
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                if not addr['addr'].startswith('fe80'):
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                    cidr = netaddr.IPNetwork("%s/%s" % (addr['addr'],
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                                                        addr['netmask']))
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                    if cidr in network:
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                        return str(cidr.ip)
 
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            if network.version == 6 and netifaces.AF_INET6 in addresses:
 
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                for addr in addresses[netifaces.AF_INET6]:
 
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                    if not addr['addr'].startswith('fe80'):
 
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                        cidr = netaddr.IPNetwork("%s/%s" % (addr['addr'],
 
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                                                            addr['netmask']))
 
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                        if cidr in network:
 
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                            return str(cidr.ip)
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    if fallback is not None:
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        return fallback