bundlewrap/bundles/dhcpd/metadata.py

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defaults = {
'apt': {
'packages': {
'isc-dhcp-server': {},
},
},
'bash_aliases': {
'leases': 'sudo dhcp-lease-list',
},
}
@metadata_reactor.provides(
'dhcpd/fixed_allocations',
)
def get_static_allocations(metadata):
allocations = {}
for rnode in repo.nodes:
if rnode.metadata.get('location', '') != metadata.get('location', ''):
continue
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for iface_name, iface_config in rnode.metadata.get('interfaces', {}).items():
if iface_config.get('dhcp', False):
try:
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allocations[f'{rnode.name}_{iface_name}'] = {
'ipv4': sorted(iface_config['ips'])[0],
'mac': iface_config['mac'],
}
except KeyError:
pass
return {
'dhcpd': {
'fixed_allocations': allocations,
}
}
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@metadata_reactor.provides(
'dhcpd/listen_interfaces',
)
def get_listen_interfaces(metadata):
listen_interfaces = []
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for _, subnet in node.metadata.get('dhcpd/subnets', {}).items():
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listen_interfaces.append(subnet['interface'])
return {
'dhcpd': {
'listen_interfaces': ' '.join(sorted(listen_interfaces)),
}
}
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@metadata_reactor.provides(
'iptables/bundle_rules/dhcpd',
)
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def iptables(metadata):
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rules = set()
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for subnet in node.metadata.get('dhcpd/subnets', {}).values():
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rules.add('iptables -A INPUT -i {} -p udp --dport 67:68 -j ACCEPT'.format(subnet['interface']))
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return {
'iptables': {
'bundle_rules': {
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# can't use port_rules here. We're generating interface based rules here.
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'dhcpd': sorted(list(rules)),
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},
}
}