155 lines
5.0 KiB
Python
155 lines
5.0 KiB
Python
# Copyright 2017 Red Hat, Inc. 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 subprocess
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import distro
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from oslo_config import cfg
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from oslo_log import log as logging
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import webob
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from werkzeug import exceptions
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from octavia.amphorae.backends.utils import interface_file
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from octavia.common import constants as consts
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from octavia.common import exceptions as octavia_exceptions
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class BaseOS(object):
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def __init__(self, os_name):
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self.os_name = os_name
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self.package_name_map = {}
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@classmethod
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def _get_subclasses(cls):
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for subclass in cls.__subclasses__():
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for sc in subclass._get_subclasses():
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yield sc
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yield subclass
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@classmethod
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def get_os_util(cls):
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os_name = distro.id()
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for subclass in cls._get_subclasses():
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if subclass.is_os_name(os_name):
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return subclass(os_name)
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raise octavia_exceptions.InvalidAmphoraOperatingSystem(os_name=os_name)
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def _map_package_name(self, package_name):
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return self.package_name_map.get(package_name, package_name)
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def write_interface_file(self, interface, ip_address, prefixlen):
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interface = interface_file.InterfaceFile(
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name=interface,
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addresses=[{
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"address": ip_address,
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"prefixlen": prefixlen
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}]
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)
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interface.write()
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def write_vip_interface_file(self, interface, vip, ip_version,
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prefixlen, gateway,
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mtu, vrrp_ip,
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host_routes):
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vip_interface = interface_file.VIPInterfaceFile(
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name=interface,
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mtu=mtu,
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vip=vip,
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ip_version=ip_version,
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prefixlen=prefixlen,
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gateway=gateway,
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vrrp_ip=vrrp_ip,
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host_routes=host_routes,
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topology=CONF.controller_worker.loadbalancer_topology)
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vip_interface.write()
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def write_port_interface_file(self, interface, fixed_ips, mtu):
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port_interface = interface_file.PortInterfaceFile(
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name=interface,
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mtu=mtu,
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fixed_ips=fixed_ips)
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port_interface.write()
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@classmethod
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def _bring_if_up(cls, interface, what):
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cmd = ("ip netns exec {ns} amphora-interface up {params}".format(
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ns=consts.AMPHORA_NAMESPACE, params=interface))
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LOG.debug("Executing: %s", cmd)
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try:
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out = subprocess.check_output(cmd.split(),
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stderr=subprocess.STDOUT)
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LOG.debug(out)
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except subprocess.CalledProcessError as e:
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LOG.error('Failed to set up %s due to error: %s %s', interface,
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e, e.output)
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raise exceptions.HTTPException(
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response=webob.Response(json=dict(
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message='Error plugging {0}'.format(what),
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details=e.output), status=500))
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@classmethod
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def _bring_if_down(cls, interface):
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cmd = ("ip netns exec {ns} amphora-interface down {params}".format(
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ns=consts.AMPHORA_NAMESPACE, params=interface))
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LOG.debug("Executing: %s", cmd)
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try:
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subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
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except subprocess.CalledProcessError as e:
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LOG.info('Ignoring failure to set %s down due to error: %s %s',
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interface, e, e.output)
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@classmethod
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def bring_interfaces_up(cls, ip, primary_interface):
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cls._bring_if_down(primary_interface)
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cls._bring_if_up(primary_interface, 'VIP')
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class Ubuntu(BaseOS):
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@classmethod
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def is_os_name(cls, os_name):
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return os_name in ['ubuntu']
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def cmd_get_version_of_installed_package(self, package_name):
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name = self._map_package_name(package_name)
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return "dpkg-query -W -f=${{Version}} {name}".format(name=name)
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class RH(BaseOS):
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@classmethod
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def is_os_name(cls, os_name):
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return os_name in ['fedora', 'rhel']
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def cmd_get_version_of_installed_package(self, package_name):
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name = self._map_package_name(package_name)
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return "rpm -q --queryformat %{{VERSION}} {name}".format(name=name)
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class CentOS(RH):
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def __init__(self, os_name):
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super().__init__(os_name)
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if distro.version() == '7':
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self.package_name_map.update({'haproxy': 'haproxy18'})
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@classmethod
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def is_os_name(cls, os_name):
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return os_name in ['centos']
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