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|
import os
from six import StringIO
try:
from unittest import mock
except ImportError:
import mock
try:
from contextlib import ExitStack
except ImportError:
from contextlib2 import ExitStack
from ..helpers import TestCase
from cloudinit import distros
from cloudinit.distros.parsers.sys_conf import SysConf
from cloudinit import helpers
from cloudinit import settings
from cloudinit import util
BASE_NET_CFG = '''
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.5
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.1.0
gateway 192.168.1.254
auto eth1
iface eth1 inet dhcp
'''
BASE_NET_CFG_IPV6 = '''
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.1.5
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.1.0
gateway 192.168.1.254
iface eth0 inet6 static
address 2607:f0d0:1002:0011::2
netmask 64
gateway 2607:f0d0:1002:0011::1
iface eth1 inet static
address 192.168.1.6
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.1.0
gateway 192.168.1.254
iface eth1 inet6 static
address 2607:f0d0:1002:0011::3
netmask 64
gateway 2607:f0d0:1002:0011::1
'''
class WriteBuffer(object):
def __init__(self):
self.buffer = StringIO()
self.mode = None
self.omode = None
def write(self, text):
self.buffer.write(text)
def __str__(self):
return self.buffer.getvalue()
class TestNetCfgDistro(TestCase):
def _get_distro(self, dname):
cls = distros.fetch(dname)
cfg = settings.CFG_BUILTIN
cfg['system_info']['distro'] = dname
paths = helpers.Paths({})
return cls(dname, cfg, paths)
def test_simple_write_ub(self):
ub_distro = self._get_distro('ubuntu')
with ExitStack() as mocks:
write_bufs = {}
def replace_write(filename, content, mode=0o644, omode="wb"):
buf = WriteBuffer()
buf.mode = mode
buf.omode = omode
buf.write(content)
write_bufs[filename] = buf
mocks.enter_context(
mock.patch.object(util, 'write_file', replace_write))
mocks.enter_context(
mock.patch.object(os.path, 'isfile', return_value=False))
ub_distro.apply_network(BASE_NET_CFG, False)
self.assertEqual(len(write_bufs), 1)
eni_name = '/etc/network/interfaces.d/50-cloud-init.cfg'
self.assertIn(eni_name, write_bufs)
write_buf = write_bufs[eni_name]
self.assertEqual(str(write_buf).strip(), BASE_NET_CFG.strip())
self.assertEqual(write_buf.mode, 0o644)
def assertCfgEquals(self, blob1, blob2):
b1 = dict(SysConf(blob1.strip().splitlines()))
b2 = dict(SysConf(blob2.strip().splitlines()))
self.assertEqual(b1, b2)
for (k, v) in b1.items():
self.assertIn(k, b2)
for (k, v) in b2.items():
self.assertIn(k, b1)
for (k, v) in b1.items():
self.assertEqual(v, b2[k])
def test_simple_write_rh(self):
rh_distro = self._get_distro('rhel')
write_bufs = {}
def replace_write(filename, content, mode=0o644, omode="wb"):
buf = WriteBuffer()
buf.mode = mode
buf.omode = omode
buf.write(content)
write_bufs[filename] = buf
with ExitStack() as mocks:
mocks.enter_context(
mock.patch.object(util, 'write_file', replace_write))
mocks.enter_context(
mock.patch.object(util, 'load_file', return_value=''))
mocks.enter_context(
mock.patch.object(os.path, 'isfile', return_value=False))
rh_distro.apply_network(BASE_NET_CFG, False)
self.assertEqual(len(write_bufs), 4)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-lo',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-lo']
expected_buf = '''
DEVICE="lo"
ONBOOT=yes
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-eth0',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-eth0']
expected_buf = '''
DEVICE="eth0"
BOOTPROTO="static"
NETMASK="255.255.255.0"
IPADDR="192.168.1.5"
ONBOOT=yes
GATEWAY="192.168.1.254"
BROADCAST="192.168.1.0"
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-eth1',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-eth1']
expected_buf = '''
DEVICE="eth1"
BOOTPROTO="dhcp"
ONBOOT=yes
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network', write_bufs)
write_buf = write_bufs['/etc/sysconfig/network']
expected_buf = '''
# Created by cloud-init v. 0.7
NETWORKING=yes
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
def test_write_ipv6_rhel(self):
rh_distro = self._get_distro('rhel')
write_bufs = {}
def replace_write(filename, content, mode=0o644, omode="wb"):
buf = WriteBuffer()
buf.mode = mode
buf.omode = omode
buf.write(content)
write_bufs[filename] = buf
with ExitStack() as mocks:
mocks.enter_context(
mock.patch.object(util, 'write_file', replace_write))
mocks.enter_context(
mock.patch.object(util, 'load_file', return_value=''))
mocks.enter_context(
mock.patch.object(os.path, 'isfile', return_value=False))
rh_distro.apply_network(BASE_NET_CFG_IPV6, False)
self.assertEqual(len(write_bufs), 4)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-lo',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-lo']
expected_buf = '''
DEVICE="lo"
ONBOOT=yes
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-eth0',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-eth0']
expected_buf = '''
DEVICE="eth0"
BOOTPROTO="static"
NETMASK="255.255.255.0"
IPADDR="192.168.1.5"
ONBOOT=yes
GATEWAY="192.168.1.254"
BROADCAST="192.168.1.0"
IPV6INIT=yes
IPV6ADDR="2607:f0d0:1002:0011::2"
IPV6_DEFAULTGW="2607:f0d0:1002:0011::1"
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network-scripts/ifcfg-eth1',
write_bufs)
write_buf = write_bufs['/etc/sysconfig/network-scripts/ifcfg-eth1']
expected_buf = '''
DEVICE="eth1"
BOOTPROTO="static"
NETMASK="255.255.255.0"
IPADDR="192.168.1.6"
ONBOOT=no
GATEWAY="192.168.1.254"
BROADCAST="192.168.1.0"
IPV6INIT=yes
IPV6ADDR="2607:f0d0:1002:0011::3"
IPV6_DEFAULTGW="2607:f0d0:1002:0011::1"
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
self.assertIn('/etc/sysconfig/network', write_bufs)
write_buf = write_bufs['/etc/sysconfig/network']
expected_buf = '''
# Created by cloud-init v. 0.7
NETWORKING=yes
NETWORKING_IPV6=yes
IPV6_AUTOCONF=no
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
def test_simple_write_freebsd(self):
fbsd_distro = self._get_distro('freebsd')
write_bufs = {}
read_bufs = {
'/etc/rc.conf': '',
'/etc/resolv.conf': '',
}
def replace_write(filename, content, mode=0o644, omode="wb"):
buf = WriteBuffer()
buf.mode = mode
buf.omode = omode
buf.write(content)
write_bufs[filename] = buf
def replace_read(fname, read_cb=None, quiet=False):
if fname not in read_bufs:
if fname in write_bufs:
return str(write_bufs[fname])
raise IOError("%s not found" % fname)
else:
if fname in write_bufs:
return str(write_bufs[fname])
return read_bufs[fname]
with ExitStack() as mocks:
mocks.enter_context(
mock.patch.object(util, 'subp', return_value=('vtnet0', '')))
mocks.enter_context(
mock.patch.object(os.path, 'exists', return_value=False))
mocks.enter_context(
mock.patch.object(util, 'write_file', replace_write))
mocks.enter_context(
mock.patch.object(util, 'load_file', replace_read))
fbsd_distro.apply_network(BASE_NET_CFG, False)
self.assertIn('/etc/rc.conf', write_bufs)
write_buf = write_bufs['/etc/rc.conf']
expected_buf = '''
ifconfig_vtnet0="192.168.1.5 netmask 255.255.255.0"
ifconfig_vtnet1="DHCP"
defaultrouter="192.168.1.254"
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
def test_apply_network_config_fallback(self):
fbsd_distro = self._get_distro('freebsd')
# a weak attempt to verify that we don't have an implementation
# of _write_network_config or apply_network_config in fbsd now,
# which would make this test not actually test the fallback.
self.assertRaises(
NotImplementedError, fbsd_distro._write_network_config,
BASE_NET_CFG)
# now run
mynetcfg = {
'config': [{"type": "physical", "name": "eth0",
"mac_address": "c0:d6:9f:2c:e8:80",
"subnets": [{"type": "dhcp"}]}],
'version': 1}
write_bufs = {}
read_bufs = {
'/etc/rc.conf': '',
'/etc/resolv.conf': '',
}
def replace_write(filename, content, mode=0o644, omode="wb"):
buf = WriteBuffer()
buf.mode = mode
buf.omode = omode
buf.write(content)
write_bufs[filename] = buf
def replace_read(fname, read_cb=None, quiet=False):
if fname not in read_bufs:
if fname in write_bufs:
return str(write_bufs[fname])
raise IOError("%s not found" % fname)
else:
if fname in write_bufs:
return str(write_bufs[fname])
return read_bufs[fname]
with ExitStack() as mocks:
mocks.enter_context(
mock.patch.object(util, 'subp', return_value=('vtnet0', '')))
mocks.enter_context(
mock.patch.object(os.path, 'exists', return_value=False))
mocks.enter_context(
mock.patch.object(util, 'write_file', replace_write))
mocks.enter_context(
mock.patch.object(util, 'load_file', replace_read))
fbsd_distro.apply_network_config(mynetcfg, bring_up=False)
self.assertIn('/etc/rc.conf', write_bufs)
write_buf = write_bufs['/etc/rc.conf']
expected_buf = '''
ifconfig_vtnet0="DHCP"
'''
self.assertCfgEquals(expected_buf, str(write_buf))
self.assertEqual(write_buf.mode, 0o644)
|
