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# Copyright (c) 2017 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""DHCP utilities for VPP."""
from resources.libraries.python.VatExecutor import VatExecutor
from resources.libraries.python.topology import Topology
class DhcpClient(object):
"""DHCP Client utilities."""
@staticmethod
def set_dhcp_client_on_interface(vpp_node, interface, hostname=None):
"""Set DHCP client on interface.
:param vpp_node: VPP node to set DHCP client on.
:param interface: Interface name to set DHCP client on.
:param hostname: Hostname used in DHCP DISCOVER.
:type vpp_node: dict
:type interface: str
:type hostname: str
:raises RuntimeError: If unable to set DHCP client on interface.
"""
sw_if_index = Topology.get_interface_sw_index(vpp_node, interface)
interface = 'sw_if_index {}'.format(sw_if_index)
hostname = 'hostname {}'.format(hostname) if hostname else ''
output = VatExecutor.cmd_from_template(vpp_node,
"dhcp_client.vat",
interface=interface,
hostname=hostname)
output = output[0]
if output["retval"] != 0:
raise RuntimeError('Unable to set DHCP client on node {} and'
' interface {}.'
.format(vpp_node, interface))
class DhcpProxy(object):
"""DHCP Proxy utilities."""
@staticmethod
def dhcp_proxy_config(vpp_node, server_address, source_address):
"""Set DHCP proxy.
:param vpp_node: VPP node to set DHCP proxy.
:param server_address: DHCP server IP address.
:param source_address: DHCP proxy address.
:type vpp_node: dict
:type server_address: str
:type source_address: str
:raises RuntimeError: If unable to set DHCP proxy.
"""
output = VatExecutor.cmd_from_template(vpp_node,
"dhcp_proxy_config.vat",
server_address=server_address,
source_address=source_address)
output = output[0]
if output["retval"] != 0:
raise RuntimeError('Unable to set DHCP proxy on node {}'
.format(vpp_node))
@staticmethod
def vpp_get_dhcp_proxy(node, ip_version):
"""Retrieve DHCP relay configuration.
:param node: VPP node.
:param ip_version: IP protocol version: ipv4 or ipv6.
:type node: dict
:type ip_version: str
:returns: DHCP relay data.
:rtype: list
"""
return VatExecutor.cmd_from_template(
node, "dhcp_proxy_dump.vat",
ipv6="ipv6" if ip_version == "ipv6" else "")
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