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325c9ae9c345d4bb043ae81efb748b19adc9dd91
os-ken/ryu/tests/integrated/test_of_config.py
Satoshi Kobayashi 325c9ae9c3 Syntax level compatibility with Python 3 
We use syntaxes which can be used only in Python2 at many locations. But we should reduce the use of the syntaxes. This patch serves syntax level compatibility with Python3. However, for full compatibility is required still a lot of work because many API changes are made between 2 to 3.

Signed-off-by: Satoshi Kobayashi <satoshi-k@stratosphere.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
2015-04-08 12:57:45 +09:00

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# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2013 Isaku Yamahata <yamahata at private email ne jp>
#
# 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.
"""
How to run this test
edit linc config file. LINC-Switch/rel/linc/releases/1.0/sys.config
You can find the sample config I used for the test below
For this following config to work, the network interface
linc-port and linc-port2 must be created before hand.
(Or edit the port name depending on your environment)
An easy way is to create them as follows
# ip link add linc-port type veth peer name linc-port-peer
# ip link set linc-port up
# ip link add linc-port2 type veth peer name linc-port-peer2
# ip link set linc-port2 up
Then run linc
# rel/linc/bin/linc console
Then run ryu
# PYTHONPATH=. ./bin/ryu-manager --verbose \
ryu/tests/integrated/test_of_config.py
Here is my sys.config used for this test.
-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8---
[
{linc,
[
{of_config, enabled},
{logical_switches,
[
{switch, 0,
[
{backend, linc_us4},
{controllers,
[
{"Switch0-DefaultController", "localhost", 6633, tcp}
]},
{ports,
[
{port, 1, [{interface, "linc-port"}]},
{port, 2, [{interface, "linc-port2"}]}
]},
{queues_status, disabled},
{queues,
[
]}
]}
]}
]},
{enetconf,
[
{capabilities, [{base, {1, 1}},
{startup, {1, 0}},
{'writable-running', {1, 0}}]},
{callback_module, linc_ofconfig},
{sshd_ip, any},
{sshd_port, 1830},
{sshd_user_passwords,
[
{"linc", "linc"}
]}
]},
{lager,
[
{handlers,
[
{lager_console_backend, info},
{lager_file_backend,
[
{"log/error.log", error, 10485760, "$D0", 5},
{"log/console.log", info, 10485760, "$D0", 5}
]}
]}
]},
{sasl,
[
{sasl_error_logger, {file, "log/sasl-error.log"}},
{errlog_type, error},
{error_logger_mf_dir, "log/sasl"}, % Log directory
{error_logger_mf_maxbytes, 10485760}, % 10 MB max file size
{error_logger_mf_maxfiles, 5} % 5 files max
]}
].
-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8-->8--
"""
import traceback
import lxml.etree
import ncclient
from ryu.base import app_manager
from ryu.lib.netconf import constants as nc_consts
from ryu.lib import hub
from ryu.lib import of_config
from ryu.lib.of_config import capable_switch
from ryu.lib.of_config import constants as ofc_consts
# Change those depending on switch configuration
HOST = '127.0.0.1'
PORT = 1830
USERNAME = 'linc'
PASSWORD = 'linc'
CAPABLE_SWITCH_ID = 'CapableSwitch0'
LOGICAL_SWITCH = 'LogicalSwitch0'
PORT_ID = 'LogicalSwitch0-Port2'
CONTROLLER_ID = 'Switch0-DefaultController'
PORT_DICT = {
'capable_switch': CAPABLE_SWITCH_ID,
'port_id': PORT_ID,
'logical_switch': LOGICAL_SWITCH,
'controller_id': CONTROLLER_ID,
'ip': HOST,
}
SWITCH_PORT_DOWN = '''
<nc:config xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">
<capable-switch xmlns="urn:onf:of111:config:yang">
<id>%(capable_switch)s</id>
<resources>
<port>
<resource-id>%(port_id)s</resource-id>
<configuration operation="merge">
<admin-state>down</admin-state>
<no-receive>false</no-receive>
<no-forward>false</no-forward>
<no-packet-in>false</no-packet-in>
</configuration>
</port>
</resources>
</capable-switch>
</nc:config>
''' % PORT_DICT
SWITCH_ADVERTISED = '''
<nc:config xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">
<capable-switch xmlns="urn:onf:of111:config:yang">
<id>%(capable_switch)s</id>
<resources>
<port>
<resource-id>%(port_id)s</resource-id>
<features>
<advertised operation="merge">
<rate>10Mb-FD</rate>
<auto-negotiate>true</auto-negotiate>
<medium>copper</medium>
<pause>unsupported</pause>
</advertised>
</features>
</port>
</resources>
</capable-switch>
</nc:config>
''' % PORT_DICT
SWITCH_CONTROLLER = '''
<nc:config xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">
<capable-switch xmlns="urn:onf:of111:config:yang">
<id>%(capable_switch)s</id>
<logical-switches>
<switch>
<id>%(logical_switch)s</id>
<controllers>
<controller operation="merge">
<id>%(controller_id)s</id>
<role>master</role>
<ip-address>%(ip)s</ip-address>
<port>6633</port>
<protocol>tcp</protocol>
</controller>
</controllers>
</switch>
</logical-switches>
</capable-switch>
</nc:config>
''' % PORT_DICT
def _get_schema():
# file_name = of_config.OF_CONFIG_1_0_XSD
# file_name = of_config.OF_CONFIG_1_1_XSD
file_name = of_config.OF_CONFIG_1_1_1_XSD
return lxml.etree.XMLSchema(file=file_name)
class OFConfigClient(app_manager.RyuApp):
def __init__(self, *args, **kwargs):
super(OFConfigClient, self).__init__(*args, **kwargs)
self.switch = capable_switch.OFCapableSwitch(
host=HOST, port=PORT, username=USERNAME, password=PASSWORD,
unknown_host_cb=lambda host, fingeprint: True)
hub.spawn(self._do_of_config)
def _validate(self, tree):
xmlschema = _get_schema()
try:
xmlschema.assertValid(tree)
except:
traceback.print_exc()
def _do_get(self):
data_xml = self.switch.raw_get()
tree = lxml.etree.fromstring(data_xml)
# print(lxml.etree.tostring(tree, pretty_print=True))
self._validate(tree)
name_spaces = set()
for e in tree.getiterator():
name_spaces.add(capable_switch.get_ns_tag(e.tag)[0])
print(name_spaces)
return tree
def _do_get_config(self, source):
print('source = %s' % source)
config_xml = self.switch.raw_get_config(source)
tree = lxml.etree.fromstring(config_xml)
# print(lxml.etree.tostring(tree, pretty_print=True))
self._validate(tree)
def _do_edit_config(self, config):
tree = lxml.etree.fromstring(config)
self._validate(tree)
self.switch.raw_edit_config(target='running', config=config)
def _print_ports(self, tree, ns):
for port in tree.findall('{%s}%s/{%s}%s' % (ns, ofc_consts.RESOURCES,
ns, ofc_consts.PORT)):
print(lxml.etree.tostring(port, pretty_print=True))
def _set_ports_down(self):
"""try to set all ports down with etree operation"""
tree = self._do_get()
print(lxml.etree.tostring(tree, pretty_print=True))
qname = lxml.etree.QName(tree.tag)
ns = qname.namespace
self._print_ports(tree, ns)
switch_id = tree.find('{%s}%s' % (ns, ofc_consts.ID))
resources = tree.find('{%s}%s' % (ns, ofc_consts.RESOURCES))
configuration = tree.find(
'{%s}%s/{%s}%s/{%s}%s' % (ns, ofc_consts.RESOURCES,
ns, ofc_consts.PORT,
ns, ofc_consts.CONFIGURATION))
admin_state = tree.find(
'{%s}%s/{%s}%s/{%s}%s/{%s}%s' % (ns, ofc_consts.RESOURCES,
ns, ofc_consts.PORT,
ns, ofc_consts.CONFIGURATION,
ns, ofc_consts.ADMIN_STATE))
config_ = lxml.etree.Element(
'{%s}%s' % (ncclient.xml_.BASE_NS_1_0, nc_consts.CONFIG))
capable_switch_ = lxml.etree.SubElement(config_, tree.tag)
switch_id_ = lxml.etree.SubElement(capable_switch_, switch_id.tag)
switch_id_.text = switch_id.text
resources_ = lxml.etree.SubElement(capable_switch_,
resources.tag)
for port in tree.findall(
'{%s}%s/{%s}%s' % (ns, ofc_consts.RESOURCES,
ns, ofc_consts.PORT)):
resource_id = port.find('{%s}%s' % (ns, ofc_consts.RESOURCE_ID))
port_ = lxml.etree.SubElement(resources_, port.tag)
resource_id_ = lxml.etree.SubElement(port_, resource_id.tag)
resource_id_.text = resource_id.text
configuration_ = lxml.etree.SubElement(port_, configuration.tag)
configuration_.set(ofc_consts.OPERATION, nc_consts.MERGE)
admin_state_ = lxml.etree.SubElement(configuration_,
admin_state.tag)
admin_state_.text = ofc_consts.DOWN
self._do_edit_config(lxml.etree.tostring(config_, pretty_print=True))
tree = self._do_get()
self._print_ports(tree, ns)
def _do_of_config(self):
self._do_get()
self._do_get_config('running')
self._do_get_config('startup')
# LINC doesn't support 'candidate' datastore
try:
self._do_get_config('candidate')
except ncclient.NCClientError:
traceback.print_exc()
# use raw XML format
self._do_edit_config(SWITCH_PORT_DOWN)
self._do_edit_config(SWITCH_ADVERTISED)
self._do_edit_config(SWITCH_CONTROLLER)
self._set_ports_down()
self.switch.close_session()
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