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#!/usr/bin/python
# Copyright 2018 Google Inc. All Rights Reserved.
#
# 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.
"""Utilities that are distro specific for use on EL 6."""
from google_compute_engine.distro_lib import helpers
from google_compute_engine.distro_lib import ip_forwarding_utils
from google_compute_engine.distro_lib import utils
class Utils(utils.Utils):
"""Utilities used by Linux guest services on EL 6."""
def EnableIpv6(self, interfaces, logger, dhclient_script=None):
"""Configure the network interfaces for IPv6 using dhclient.
Args:
interface: string, the output device names for enabling IPv6.
logger: logger object, used to write to SysLog and serial port.
dhclient_script: string, the path to a dhclient script used by dhclient.
"""
helpers.CallEnableRouteAdvertisements(interfaces, logger)
helpers.CallDhclientIpv6(
interfaces, logger, dhclient_script=dhclient_script)
def DisableIpv6(self, interfaces, logger):
"""Disable Ipv6 by giving up the DHCP lease using dhclient.
Args:
interface: string, the output device names for enabling IPv6.
logger: logger object, used to write to SysLog and serial port.
"""
helpers.CallDhclientIpv6(interfaces, logger, None, release_lease=True)
def EnableNetworkInterfaces(self, interfaces, logger, dhclient_script=None):
"""Enable the list of network interfaces.
Args:
interfaces: list of string, the output device names to enable.
logger: logger object, used to write to SysLog and serial port.
dhclient_script: string, the path to a dhclient script used by dhclient.
"""
helpers.CallDhclient(interfaces, logger, dhclient_script=dhclient_script)
def HandleClockSync(self, logger):
"""Sync the software clock with the hypervisor clock.
Args:
logger: logger object, used to write to SysLog and serial port.
"""
helpers.CallHwclock(logger)
def IpForwardingUtils(self, logger, proto_id=None):
"""Get system IP address configuration utilities.
Args:
logger: logger object, used to write to SysLog and serial port.
proto_id: string, the routing protocol identifier for Google IP changes.
"""
return ip_forwarding_utils.IpForwardingUtilsIproute(logger, proto_id)
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