How to use port_to_br method in autotest

Best Python code snippet using autotest_python

test_ovs.py

Source:test_ovs.py

...253        exists.return_value = True254        ovs.full_restart()255        service.assert_called_with('start', 'openvswitch-force-reload-kmod')256    @patch('subprocess.check_output')257    def test_port_to_br(self, check_output):258        check_output.return_value = b'br-ex'259        self.assertEqual(ovs.port_to_br('br-lb'),260                         'br-ex')261    @patch('subprocess.check_output')262    def test_port_to_br_not_found(self, check_output):263        check_output.side_effect = subprocess.CalledProcessError(1, 'not found')264        self.assertEqual(ovs.port_to_br('br-lb'), None)265    @patch('subprocess.check_call')266    def test_enable_ipfix_defaults(self, check_call):267        ovs.enable_ipfix('br-int',268                         '10.5.0.10:4739')269        check_call.assert_called_once_with([270            'ovs-vsctl', 'set', 'Bridge', 'br-int', 'ipfix=@i', '--',271            '--id=@i', 'create', 'IPFIX',272            'targets="10.5.0.10:4739"',273            'sampling=64',274            'cache_active_timeout=60',275            'cache_max_flows=128',276        ])277    @patch('subprocess.check_call')278    def test_enable_ipfix_values(self, check_call):...

__init__.py

Source:__init__.py

...79        import netifaces80    # NOTE(jamespage):81    # Older code supported addition of a linuxbridge directly82    # to an OVS bridge; ensure we don't break uses on upgrade83    existing_ovs_bridge = port_to_br(bridge)84    if existing_ovs_bridge is not None:85        log('Linuxbridge {} is already directly in use'86            ' by OVS bridge {}'.format(bridge, existing_ovs_bridge),87            level=INFO)88        return89    # NOTE(jamespage):90    # preserve existing naming because interfaces may already exist.91    ovsbridge_port = "veth-" + name92    linuxbridge_port = "veth-" + bridge93    if (len(ovsbridge_port) > MAX_KERNEL_INTERFACE_NAME_LEN or94            len(linuxbridge_port) > MAX_KERNEL_INTERFACE_NAME_LEN):95        # NOTE(jamespage):96        # use parts of hashed bridgename (openstack style) when97        # a bridge name exceeds 15 chars98        hashed_bridge = hashlib.sha256(bridge.encode('UTF-8')).hexdigest()99        base = '{}-{}'.format(hashed_bridge[:8], hashed_bridge[-2:])100        ovsbridge_port = "cvo{}".format(base)101        linuxbridge_port = "cvb{}".format(base)102    interfaces = netifaces.interfaces()103    for interface in interfaces:104        if interface == ovsbridge_port or interface == linuxbridge_port:105            log('Interface {} already exists'.format(interface), level=INFO)106            return107    log('Adding linuxbridge {} to ovsbridge {}'.format(bridge, name),108        level=INFO)109    check_for_eni_source()110    with open('/etc/network/interfaces.d/{}.cfg'.format(111            linuxbridge_port), 'w') as config:112        config.write(BRIDGE_TEMPLATE.format(linuxbridge_port=linuxbridge_port,113                                            ovsbridge_port=ovsbridge_port,114                                            bridge=bridge))115    subprocess.check_call(["ifup", linuxbridge_port])116    add_bridge_port(name, linuxbridge_port)117def is_linuxbridge_interface(port):118    ''' Check if the interface is a linuxbridge bridge119    :param port: Name of an interface to check whether it is a Linux bridge120    :returns: True if port is a Linux bridge'''121    if os.path.exists('/sys/class/net/' + port + '/bridge'):122        log('Interface {} is a Linux bridge'.format(port), level=DEBUG)123        return True124    else:125        log('Interface {} is not a Linux bridge'.format(port), level=DEBUG)126        return False127def set_manager(manager):128    ''' Set the controller for the local openvswitch '''129    log('Setting manager for local ovs to {}'.format(manager))130    subprocess.check_call(['ovs-vsctl', 'set-manager',131                           'ssl:{}'.format(manager)])132def set_Open_vSwitch_column_value(column_value):133    """134    Calls ovs-vsctl and sets the 'column_value' in the Open_vSwitch table.135    :param column_value:136            See http://www.openvswitch.org//ovs-vswitchd.conf.db.5.pdf for137            details of the relevant values.138    :type str139    :raises CalledProcessException: possibly ovsdb-server is not running140    """141    log('Setting {} in the Open_vSwitch table'.format(column_value))142    subprocess.check_call(['ovs-vsctl', 'set', 'Open_vSwitch', '.', column_value])143CERT_PATH = '/etc/openvswitch/ovsclient-cert.pem'144def get_certificate():145    ''' Read openvswitch certificate from disk '''146    if os.path.exists(CERT_PATH):147        log('Reading ovs certificate from {}'.format(CERT_PATH))148        with open(CERT_PATH, 'r') as cert:149            full_cert = cert.read()150            begin_marker = "-----BEGIN CERTIFICATE-----"151            end_marker = "-----END CERTIFICATE-----"152            begin_index = full_cert.find(begin_marker)153            end_index = full_cert.rfind(end_marker)154            if end_index == -1 or begin_index == -1:155                raise RuntimeError("Certificate does not contain valid begin"156                                   " and end markers.")157            full_cert = full_cert[begin_index:(end_index + len(end_marker))]158            return full_cert159    else:160        log('Certificate not found', level=WARNING)161        return None162def check_for_eni_source():163    ''' Juju removes the source line when setting up interfaces,164    replace if missing '''165    with open('/etc/network/interfaces', 'r') as eni:166        for line in eni:167            if line == 'source /etc/network/interfaces.d/*':168                return169    with open('/etc/network/interfaces', 'a') as eni:170        eni.write('\nsource /etc/network/interfaces.d/*')171def full_restart():172    ''' Full restart and reload of openvswitch '''173    if os.path.exists('/etc/init/openvswitch-force-reload-kmod.conf'):174        service('start', 'openvswitch-force-reload-kmod')175    else:176        service('force-reload-kmod', 'openvswitch-switch')177def enable_ipfix(bridge, target):178    '''Enable IPfix on bridge to target.179    :param bridge: Bridge to monitor180    :param target: IPfix remote endpoint181    '''182    cmd = ['ovs-vsctl', 'set', 'Bridge', bridge, 'ipfix=@i', '--',183           '--id=@i', 'create', 'IPFIX', 'targets="{}"'.format(target)]184    log('Enabling IPfix on {}.'.format(bridge))185    subprocess.check_call(cmd)186def disable_ipfix(bridge):187    '''Diable IPfix on target bridge.188    :param bridge: Bridge to modify189    '''190    cmd = ['ovs-vsctl', 'clear', 'Bridge', bridge, 'ipfix']191    subprocess.check_call(cmd)192def port_to_br(port):193    '''Determine the bridge that contains a port194    :param port: Name of port to check for195    :returns str: OVS bridge containing port or None if not found196    '''197    try:198        return subprocess.check_output(199            ['ovs-vsctl', 'port-to-br', port]200        ).decode('UTF-8').strip()201    except subprocess.CalledProcessError:...

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