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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.
"""Unittest for network_daemon.py module."""
from google_compute_engine import network_utils
from google_compute_engine.networking import network_daemon
from google_compute_engine.test_compat import mock
from google_compute_engine.test_compat import unittest
class NetworkDaemonTest(unittest.TestCase):
def setUp(self):
self.mock_logger = mock.Mock()
self.mock_watcher = mock.Mock()
self.mock_setup = mock.create_autospec(network_daemon.NetworkDaemon)
self.mock_setup.logger = self.mock_logger
self.mock_setup.watcher = self.mock_watcher
self.mock_ip_forwarding = mock.Mock()
self.mock_network_setup = mock.Mock()
self.mock_network_utils = mock.Mock()
self.mock_setup.ip_forwarding = self.mock_ip_forwarding
self.mock_setup.network_setup = self.mock_network_setup
self.mock_setup.network_utils = self.mock_network_utils
@mock.patch('google_compute_engine.networking.network_daemon.ip_forwarding')
@mock.patch('google_compute_engine.networking.network_daemon.network_setup')
@mock.patch('google_compute_engine.networking.network_daemon.network_utils')
@mock.patch('google_compute_engine.networking.network_daemon.metadata_watcher')
@mock.patch('google_compute_engine.networking.network_daemon.logger')
@mock.patch('google_compute_engine.networking.network_daemon.file_utils')
def testNetworkDaemon(
self, mock_lock, mock_logger, mock_watcher, mock_network_utils,
mock_network_setup, mock_ip_forwarding):
mock_logger_instance = mock.Mock()
mock_logger.Logger.return_value = mock_logger_instance
mocks = mock.Mock()
mocks.attach_mock(mock_lock, 'lock')
mocks.attach_mock(mock_logger, 'logger')
mocks.attach_mock(mock_network_utils, 'network')
mocks.attach_mock(mock_ip_forwarding, 'forwarding')
mocks.attach_mock(mock_network_setup, 'network_setup')
mocks.attach_mock(mock_watcher, 'watcher')
metadata_key = network_daemon.NetworkDaemon.network_interface_metadata_key
with mock.patch.object(
network_daemon.NetworkDaemon, 'HandleNetworkInterfaces'
) as mock_handle:
network_daemon.NetworkDaemon(
ip_forwarding_enabled=True,
proto_id='66',
ip_aliases=None,
target_instance_ips=None,
dhclient_script='x',
dhcp_command='y',
network_setup_enabled=True,
debug=True)
expected_calls = [
mock.call.logger.Logger(name=mock.ANY, debug=True, facility=mock.ANY),
mock.call.forwarding.IpForwarding(proto_id='66', debug=True),
mock.call.network_setup.NetworkSetup(
debug=True, dhclient_script='x', dhcp_command='y'),
mock.call.network.NetworkUtils(logger=mock_logger_instance),
mock.call.watcher.MetadataWatcher(logger=mock_logger_instance),
mock.call.lock.LockFile(network_daemon.LOCKFILE),
mock.call.lock.LockFile().__enter__(),
mock.call.logger.Logger().info(mock.ANY),
mock.call.watcher.MetadataWatcher().WatchMetadata(
mock_handle, metadata_key=metadata_key, recursive=True,
timeout=mock.ANY),
mock.call.lock.LockFile().__exit__(None, None, None),
]
self.assertEqual(mocks.mock_calls, expected_calls)
@mock.patch('google_compute_engine.networking.network_daemon.ip_forwarding')
@mock.patch('google_compute_engine.networking.network_daemon.network_setup')
@mock.patch('google_compute_engine.networking.network_daemon.network_utils')
@mock.patch('google_compute_engine.networking.network_daemon.metadata_watcher')
@mock.patch('google_compute_engine.networking.network_daemon.logger')
@mock.patch('google_compute_engine.networking.network_daemon.file_utils')
def testNetworkDaemonError(
self, mock_lock, mock_logger, mock_watcher, mock_network_utils,
mock_network_setup, mock_ip_forwarding):
mock_logger_instance = mock.Mock()
mock_logger.Logger.return_value = mock_logger_instance
mocks = mock.Mock()
mocks.attach_mock(mock_lock, 'lock')
mocks.attach_mock(mock_logger, 'logger')
mocks.attach_mock(mock_ip_forwarding, 'forwarding')
mocks.attach_mock(mock_network_setup, 'network_setup')
mocks.attach_mock(mock_network_utils, 'network')
mocks.attach_mock(mock_watcher, 'watcher')
self.mock_setup._ExtractInterfaceMetadata.return_value = []
mock_lock.LockFile.side_effect = IOError('Test Error')
with mock.patch.object(
network_daemon.NetworkDaemon, 'HandleNetworkInterfaces'):
network_daemon.NetworkDaemon(
ip_forwarding_enabled=False,
proto_id='66',
ip_aliases=None,
target_instance_ips=None,
dhclient_script='x',
dhcp_command='y',
network_setup_enabled=False,
debug=True)
expected_calls = [
mock.call.logger.Logger(name=mock.ANY, debug=True, facility=mock.ANY),
mock.call.forwarding.IpForwarding(proto_id='66', debug=True),
mock.call.network_setup.NetworkSetup(
debug=True, dhclient_script='x', dhcp_command='y'),
mock.call.network.NetworkUtils(logger=mock_logger_instance),
mock.call.watcher.MetadataWatcher(logger=mock_logger_instance),
mock.call.lock.LockFile(network_daemon.LOCKFILE),
mock.call.logger.Logger().warning('Test Error'),
]
self.assertEqual(mocks.mock_calls, expected_calls)
def testHandleNetworkInterfaces(self):
mocks = mock.Mock()
mocks.attach_mock(self.mock_ip_forwarding, 'forwarding')
mocks.attach_mock(self.mock_network_setup, 'network_setup')
mocks.attach_mock(self.mock_setup, 'setup')
self.mock_setup.ip_aliases = None
self.mock_setup.target_instance_ips = None
self.mock_setup.ip_forwarding_enabled = True
self.mock_setup.network_setup_enabled = True
self.mock_setup._ExtractInterfaceMetadata.return_value = [
network_daemon.NetworkDaemon.NetworkInterface('a'),
network_daemon.NetworkDaemon.NetworkInterface('b'),
]
result = mock.Mock()
network_daemon.NetworkDaemon.HandleNetworkInterfaces(
self.mock_setup, result)
expected_calls = [
mock.call.setup._ExtractInterfaceMetadata(result),
mock.call.network_setup.EnableNetworkInterfaces(['b']),
mock.call.forwarding.HandleForwardedIps('a', None, None),
mock.call.forwarding.HandleForwardedIps('b', None, None),
]
self.assertEqual(mocks.mock_calls, expected_calls)
def testHandleNetworkInterfacesDisabled(self):
mocks = mock.Mock()
mocks.attach_mock(self.mock_ip_forwarding, 'forwarding')
mocks.attach_mock(self.mock_network_setup, 'network_setup')
mocks.attach_mock(self.mock_setup, 'setup')
self.mock_setup.ip_aliases = None
self.mock_setup.target_instance_ips = None
self.mock_setup.ip_forwarding_enabled = False
self.mock_setup.network_setup_enabled = False
self.mock_setup._ExtractInterfaceMetadata.return_value = [
network_daemon.NetworkDaemon.NetworkInterface('a'),
network_daemon.NetworkDaemon.NetworkInterface('b'),
]
result = mock.Mock()
network_daemon.NetworkDaemon.HandleNetworkInterfaces(
self.mock_setup, result)
expected_calls = [
mock.call.setup._ExtractInterfaceMetadata(result),
]
self.assertEqual(mocks.mock_calls, expected_calls)
def testExtractInterfaceMetadata(self):
self.mock_setup.ip_aliases = True
self.mock_setup.target_instance_ips = True
self.mock_setup.network_utils = network_utils.NetworkUtils()
self.mock_setup.network_utils.interfaces = {
'1': 'eth0', '2': 'eth1', '3': 'eth2',
}
metadata = [
{
'mac': '1',
'forwardedIps': ['a'],
},
{
'mac': '2',
'forwardedIps': ['b'],
'ipAliases': ['banana'],
'targetInstanceIps': ['baklava'],
},
{
'mac': '3',
'ipAliases': ['cherry'],
'targetInstanceIps': ['cake'],
},
{
'mac': '4',
},
{
'forwardedIps': ['d'],
'ipAliases': ['date'],
'targetInstanceIps': ['doughnuts'],
},
]
expected_interfaces = [
network_daemon.NetworkDaemon.NetworkInterface('eth0', ['a']),
network_daemon.NetworkDaemon.NetworkInterface(
'eth1', ['b', 'banana', 'baklava']),
network_daemon.NetworkDaemon.NetworkInterface(
'eth2', ['cherry', 'cake']),
]
actual_interfaces = network_daemon.NetworkDaemon._ExtractInterfaceMetadata(
self.mock_setup, metadata)
for actual, expected in zip(actual_interfaces, expected_interfaces):
self.assertEqual(actual.name, expected.name)
self.assertEqual(actual.forwarded_ips, expected.forwarded_ips)
def testExtractInterfaceMetadataWithoutOptions(self):
self.mock_setup.ip_aliases = None
self.mock_setup.target_instance_ips = None
self.mock_setup.network_utils = network_utils.NetworkUtils()
self.mock_setup.network_utils.interfaces = {
'1': 'eth0', '2': 'eth1', '3': 'eth2',
}
metadata = [
{
'mac': '1',
'forwardedIps': ['a'],
},
{
'mac': '2',
'forwardedIps': ['b'],
'ipAliases': ['banana'],
'targetInstanceIps': ['baklava'],
},
{
'mac': '3',
'ipAliases': ['cherry'],
'targetInstanceIps': ['cake'],
},
]
expected_interfaces = [
network_daemon.NetworkDaemon.NetworkInterface('eth0', ['a']),
network_daemon.NetworkDaemon.NetworkInterface('eth1', ['b']),
network_daemon.NetworkDaemon.NetworkInterface('eth2', []),
]
actual_interfaces = network_daemon.NetworkDaemon._ExtractInterfaceMetadata(
self.mock_setup, metadata)
for actual, expected in zip(actual_interfaces, expected_interfaces):
self.assertEqual(actual.name, expected.name)
self.assertEqual(actual.forwarded_ips, expected.forwarded_ips)
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