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# Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2015 Stratosphere Inc.
#
# 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.
# vim: tabstop=4 shiftwidth=4 softtabstop=4
import json
import os
import ssl
import sys
import warnings
import logging
import random
import testtools
import unittest
from unittest import mock
from os_ken.base import app_manager # To suppress cyclic import
from os_ken.controller import controller
from os_ken.controller import handler
from os_ken.lib import hub
from os_ken.ofproto import ofproto_v1_3_parser
from os_ken.ofproto import ofproto_v1_2_parser
from os_ken.ofproto import ofproto_v1_0_parser
hub.patch()
LOG = logging.getLogger('test_controller')
class TestUtils(testtools.TestCase):
"""
Test cases for utilities defined in controller module.
"""
def test_split_addr_with_ipv4(self):
addr, port = controller._split_addr('127.0.0.1:6653')
self.assertEqual('127.0.0.1', addr)
self.assertEqual(6653, port)
def test_split_addr_with_ipv6(self):
addr, port = controller._split_addr('[::1]:6653')
self.assertEqual('::1', addr)
self.assertEqual(6653, port)
def test_split_addr_with_invalid_addr(self):
self.assertRaises(ValueError, controller._split_addr, '127.0.0.1')
def test_split_addr_with_invalid_ipv4_addr(self):
self.assertRaises(ValueError, controller._split_addr,
'xxx.xxx.xxx.xxx:6653')
def test_split_addr_with_invalid_ipv6_addr(self):
self.assertRaises(ValueError, controller._split_addr,
'[::xxxx]:6653')
def test_split_addr_with_non_bracketed_ipv6_addr(self):
self.assertRaises(ValueError, controller._split_addr,
'::1:6653')
class Test_Datapath(unittest.TestCase):
"""
Test cases for controller.Datapath
"""
def _test_ports_accessibility(self, ofproto_parser, msgs_len):
with mock.patch('os_ken.controller.controller.Datapath.set_state'):
# Ignore warnings
with warnings.catch_warnings(record=True) as msgs:
warnings.simplefilter('always')
# Test target
sock_mock = mock.Mock()
addr_mock = mock.Mock()
dp = controller.Datapath(sock_mock, addr_mock)
dp.ofproto_parser = ofproto_parser
# Create
dp.ports = {}
# Update
port_mock = mock.Mock()
dp.ports[0] = port_mock
# Read & Delete
del dp.ports[0]
self.assertEqual(len(msgs), msgs_len)
for msg in msgs:
self.assertTrue(issubclass(msg.category, UserWarning))
def test_ports_accessibility_v13(self):
self._test_ports_accessibility(ofproto_v1_3_parser, 0)
def test_ports_accessibility_v12(self):
self._test_ports_accessibility(ofproto_v1_2_parser, 0)
def test_ports_accessibility_v10(self):
self._test_ports_accessibility(ofproto_v1_0_parser, 0)
@mock.patch("os_ken.base.app_manager", spec=app_manager)
def test_recv_loop(self, app_manager_mock):
# Prepare test data
test_messages = [
"4-6-ofp_features_reply.packet",
"4-14-ofp_echo_reply.packet",
"4-14-ofp_echo_reply.packet",
"4-4-ofp_packet_in.packet",
"4-14-ofp_echo_reply.packet",
"4-14-ofp_echo_reply.packet",
]
this_dir = os.path.dirname(sys.modules[__name__].__file__)
packet_data_dir = os.path.join(this_dir, '../../packet_data/of13')
json_dir = os.path.join(this_dir, '../ofproto/json/of13')
packet_buf = bytearray()
expected_json = list()
for msg in test_messages:
# Construct the received packet buffer as one packet data in order
# to test the case of the OpenFlow messages composed in one packet.
packet_data_file = os.path.join(packet_data_dir, msg)
packet_buf += open(packet_data_file, 'rb').read()
json_data_file = os.path.join(json_dir, msg + '.json')
expected_json.append(json.load(open(json_data_file)))
# Prepare mock for socket
class SocketMock(mock.MagicMock):
buf = bytearray()
random = None
def recv(self, bufsize):
size = self.random.randint(1, bufsize)
out = self.buf[:size]
self.buf = self.buf[size:]
return out
# Prepare mock
ofp_brick_mock = mock.MagicMock(spec=app_manager.OSKenApp)
app_manager_mock.lookup_service_brick.return_value = ofp_brick_mock
sock_mock = SocketMock()
sock_mock.buf = packet_buf
sock_mock.random = random.Random('OSKen SDN Framework')
addr_mock = mock.MagicMock()
# Prepare test target
dp = controller.Datapath(sock_mock, addr_mock)
dp.set_state(handler.MAIN_DISPATCHER)
ofp_brick_mock.reset_mock()
# Test
dp._recv_loop()
# Assert calls
output_json = list()
for call in ofp_brick_mock.send_event_to_observers.call_args_list:
args, kwargs = call
ev, state = args
if not hasattr(ev, 'msg'):
continue
output_json.append(ev.msg.to_jsondict())
self.assertEqual(state, handler.MAIN_DISPATCHER)
self.assertEqual(kwargs, {})
self.assertEqual(expected_json, output_json)
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