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How to use ovs_vsctl method in autotest

Best Python code snippet using autotest_python
bridge.py
Source:bridge.py
1# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.2# Copyright (C) 2012 Isaku Yamahata <yamahata at private email ne jp>3#4# Licensed under the Apache License, Version 2.0 (the "License");5# you may not use this file except in compliance with the License.6# You may obtain a copy of the License at7#8#    http://www.apache.org/licenses/LICENSE-2.09#10# Unless required by applicable law or agreed to in writing, software11# distributed under the License is distributed on an "AS IS" BASIS,12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or13# implied.14# See the License for the specific language governing permissions and15# limitations under the License.16"""17slimmed down version of OVSBridge in quantum agent18"""19import functools20import logging21from ryu import cfg22import ryu.exception as ryu_exc23import ryu.lib.dpid as dpid_lib24import ryu.lib.ovs.vsctl as ovs_vsctl25LOG = logging.getLogger(__name__)26CONF = cfg.CONF27CONF.register_opts([28    cfg.IntOpt('ovsdb-timeout', default=2, help='ovsdb timeout')29])30class OVSBridgeNotFound(ryu_exc.RyuException):31    message = 'no bridge for datapath_id %(datapath_id)s'32class VifPort(object):33    def __init__(self, port_name, ofport, vif_id, vif_mac, switch):34        super(VifPort, self).__init__()35        self.port_name = port_name36        self.ofport = ofport37        self.vif_id = vif_id38        self.vif_mac = vif_mac39        self.switch = switch40    def __str__(self):41        return ('iface-id=%s, '42                'vif_mac=%s, '43                'port_name=%s, '44                'ofport=%d, '45                'bridge_name=%s' % (self.vif_id,46                                    self.vif_mac,47                                    self.port_name,48                                    self.ofport,49                                    self.switch.br_name))50class TunnelPort(object):51    def __init__(self, port_name, ofport, tunnel_type, local_ip, remote_ip):52        super(TunnelPort, self).__init__()53        self.port_name = port_name54        self.ofport = ofport55        self.tunnel_type = tunnel_type56        self.local_ip = local_ip57        self.remote_ip = remote_ip58    def __eq__(self, other):59        return (self.port_name == other.port_name and60                self.ofport == other.ofport and61                self.tunnel_type == other.tunnel_type and62                self.local_ip == other.local_ip and63                self.remote_ip == other.remote_ip)64    def __str__(self):65        return ('port_name=%s, '66                'ofport=%s, '67                'type=%s, '68                'local_ip=%s, '69                'remote_ip=%s' % (self.port_name,70                                  self.ofport,71                                  self.tunnel_type,72                                  self.local_ip,73                                  self.remote_ip))74class OVSBridge(object):75    def __init__(self, CONF, datapath_id, ovsdb_addr, timeout=None,76                 exception=None):77        super(OVSBridge, self).__init__()78        self.datapath_id = datapath_id79        self.vsctl = ovs_vsctl.VSCtl(ovsdb_addr)80        self.timeout = timeout or CONF.ovsdb_timeout81        self.exception = exception82        self.br_name = None83    def run_command(self, commands):84        self.vsctl.run_command(commands, self.timeout, self.exception)85    def init(self):86        if self.br_name is None:87            self.br_name = self._get_bridge_name()88    def _get_bridge_name(self):89        """ get Bridge name of a given 'datapath_id' """90        command = ovs_vsctl.VSCtlCommand(91            'find',92            ('Bridge',93             'datapath_id=%s' % dpid_lib.dpid_to_str(self.datapath_id)))94        self.run_command([command])95        if not isinstance(command.result, list) or len(command.result) != 1:96            raise OVSBridgeNotFound(97                datapath_id=dpid_lib.dpid_to_str(self.datapath_id))98        return command.result[0].name99    def get_controller(self):100        command = ovs_vsctl.VSCtlCommand('get-controller', [self.br_name])101        self.run_command([command])102        return command.result[0]103    def set_controller(self, controllers):104        command = ovs_vsctl.VSCtlCommand('set-controller', [self.br_name])105        command.args.extend(controllers)106        self.run_command([command])107    def del_controller(self):108        command = ovs_vsctl.VSCtlCommand('del-controller', [self.br_name])109        self.run_command([command])110    def list_db_attributes(self, table, record=None):111        """112        Lists 'record' (or all records) in 'table'.113        This method is corresponding to the following ovs-vsctl command::114            $ ovs-vsctl list TBL [REC]115        """116        command = ovs_vsctl.VSCtlCommand('list', (table, record))117        self.run_command([command])118        if command.result:119            return command.result120        return []121    def find_db_attributes(self, table, *conditions):122        """123        Lists records satisfying 'conditions' in 'table'.124        This method is corresponding to the following ovs-vsctl command::125            $ ovs-vsctl find TBL CONDITION...126        .. Note::127            Currently, only '=' condition is supported.128            To support other condition is TODO.129        """130        args = [table]131        args.extend(conditions)132        command = ovs_vsctl.VSCtlCommand('find', args)133        self.run_command([command])134        if command.result:135            return command.result136        return []137    def get_db_attribute(self, table, record, column, key=None):138        """139        Gets values of 'column' in 'record' in 'table'.140        This method is corresponding to the following ovs-vsctl command::141            $ ovs-vsctl get TBL REC COL[:KEY]142        """143        if key is not None:144            column = '%s:%s' % (column, key)145        command = ovs_vsctl.VSCtlCommand(146            'get', (table, record, column))147        self.run_command([command])148        if command.result:149            return command.result[0]150        return None151    def set_db_attribute(self, table, record, column, value, key=None):152        """153        Sets 'value' into 'column' in 'record' in 'table'.154        This method is corresponding to the following ovs-vsctl command::155            $ ovs-vsctl set TBL REC COL[:KEY]=VALUE156        """157        if key is not None:158            column = '%s:%s' % (column, key)159        command = ovs_vsctl.VSCtlCommand(160            'set', (table, record, '%s=%s' % (column, value)))161        self.run_command([command])162    def add_db_attribute(self, table, record, column, value, key=None):163        """164        Adds ('key'=)'value' into 'column' in 'record' in 'table'.165        This method is corresponding to the following ovs-vsctl command::166            $ ovs-vsctl add TBL REC COL [KEY=]VALUE167        """168        if key is not None:169            value = '%s=%s' % (key, value)170        command = ovs_vsctl.VSCtlCommand(171            'add', (table, record, column, value))172        self.run_command([command])173    def remove_db_attribute(self, table, record, column, value, key=None):174        """175        Removes ('key'=)'value' into 'column' in 'record' in 'table'.176        This method is corresponding to the following ovs-vsctl command::177            $ ovs-vsctl remove TBL REC COL [KEY=]VALUE178        """179        if key is not None:180            value = '%s=%s' % (key, value)181        command = ovs_vsctl.VSCtlCommand(182            'remove', (table, record, column, value))183        self.run_command([command])184    def clear_db_attribute(self, table, record, column):185        """186        Clears values from 'column' in 'record' in 'table'.187        This method is corresponding to the following ovs-vsctl command::188            $ ovs-vsctl clear TBL REC COL189        """190        command = ovs_vsctl.VSCtlCommand('clear', (table, record, column))191        self.run_command([command])192    def db_get_val(self, table, record, column):193        command = ovs_vsctl.VSCtlCommand('get', (table, record, column))194        self.run_command([command])195        assert len(command.result) == 1196        return command.result[0]197    def db_get_map(self, table, record, column):198        val = self.db_get_val(table, record, column)199        assert isinstance(val, dict)200        return val201    def get_datapath_id(self):202        return self.db_get_val('Bridge', self.br_name, 'datapath_id')203    def delete_port(self, port_name):204        command = ovs_vsctl.VSCtlCommand(205            'del-port', (self.br_name, port_name), '--if-exists')206        self.run_command([command])207    def get_ofport(self, port_name):208        ofport_list = self.db_get_val('Interface', port_name, 'ofport')209        assert len(ofport_list) == 1210        return int(ofport_list[0])211    def get_port_name_list(self):212        command = ovs_vsctl.VSCtlCommand('list-ports', (self.br_name, ))213        self.run_command([command])214        return command.result215    def add_bond(self, name, ifaces, bond_mode=None, lacp=None):216        """217        Creates a bonded port.218        :param name: Port name to be created219        :param ifaces: List of interfaces containing at least 2 interfaces220        :param bond_mode: Bonding mode (active-backup, balance-tcp221                          or balance-slb)222        :param lacp: LACP mode (active, passive or off)223        """224        assert len(ifaces) >= 2225        options = ''226        if bond_mode:227            options += 'bond_mode=%(bond_mode)s' % locals()228        if lacp:229            options += 'lacp=%(lacp)s' % locals()230        command_add = ovs_vsctl.VSCtlCommand(231            'add-bond', (self.br_name, name, ifaces), options)232        self.run_command([command_add])233    def add_tunnel_port(self, name, tunnel_type, remote_ip,234                        local_ip=None, key=None, ofport=None):235        options = 'remote_ip=%(remote_ip)s' % locals()236        if key:237            options += ',key=%(key)s' % locals()238        if local_ip:239            options += ',local_ip=%(local_ip)s' % locals()240        args = ['Interface', name, 'type=%s' % tunnel_type,241                'options:%s' % options]242        if ofport:243            args.append('ofport_request=%(ofport)s' % locals())244        command_add = ovs_vsctl.VSCtlCommand('add-port', (self.br_name, name))245        command_set = ovs_vsctl.VSCtlCommand('set', args)246        self.run_command([command_add, command_set])247    def add_gre_port(self, name, remote_ip,248                     local_ip=None, key=None, ofport=None):249        self.add_tunnel_port(name, 'gre', remote_ip,250                             local_ip=local_ip, key=key, ofport=ofport)251    def add_vxlan_port(self, name, remote_ip,252                       local_ip=None, key=None, ofport=None):253        self.add_tunnel_port(name, 'vxlan', remote_ip,254                             local_ip=local_ip, key=key, ofport=ofport)255    def del_port(self, port_name):256        command = ovs_vsctl.VSCtlCommand('del-port', (self.br_name, port_name))257        self.run_command([command])258    def _get_ports(self, get_port):259        ports = []260        port_names = self.get_port_name_list()261        for name in port_names:262            if self.get_ofport(name) < 0:263                continue264            port = get_port(name)265            if port:266                ports.append(port)267        return ports268    def _vifport(self, name, external_ids):269        ofport = self.get_ofport(name)270        return VifPort(name, ofport, external_ids['iface-id'],271                       external_ids['attached-mac'], self)272    def _get_vif_port(self, name):273        external_ids = self.db_get_map('Interface', name, 'external_ids')274        if 'iface-id' in external_ids and 'attached-mac' in external_ids:275            return self._vifport(name, external_ids)276    def get_vif_ports(self):277        """ Returns a VIF object for each VIF port """278        return self._get_ports(self._get_vif_port)279    def _get_external_port(self, name):280        # exclude vif ports281        external_ids = self.db_get_map('Interface', name, 'external_ids')282        if external_ids:283            return284        # exclude tunnel ports285        options = self.db_get_map('Interface', name, 'options')286        if 'remote_ip' in options:287            return288        ofport = self.get_ofport(name)289        return VifPort(name, ofport, None, None, self)290    def get_external_ports(self):291        return self._get_ports(self._get_external_port)292    def get_tunnel_port(self, name, tunnel_type='gre'):293        type_ = self.db_get_val('Interface', name, 'type')294        if type_ != tunnel_type:295            return296        options = self.db_get_map('Interface', name, 'options')297        if 'local_ip' in options and 'remote_ip' in options:298            ofport = self.get_ofport(name)299            return TunnelPort(name, ofport, tunnel_type,300                              options['local_ip'], options['remote_ip'])301    def get_tunnel_ports(self, tunnel_type='gre'):302        get_tunnel_port = functools.partial(self.get_tunnel_port,303                                            tunnel_type=tunnel_type)304        return self._get_ports(get_tunnel_port)305    def get_quantum_ports(self, port_name):306        LOG.debug('port_name %s', port_name)307        command = ovs_vsctl.VSCtlCommand(308            'list-ifaces-verbose',309            [dpid_lib.dpid_to_str(self.datapath_id), port_name])310        self.run_command([command])311        if command.result:312            return command.result[0]313        return None314    def set_qos(self, port_name, type='linux-htb', max_rate=None, queues=None):315        queues = queues if queues else []316        command_qos = ovs_vsctl.VSCtlCommand(317            'set-qos',318            [port_name, type, max_rate])319        command_queue = ovs_vsctl.VSCtlCommand(320            'set-queue',321            [port_name, queues])322        self.run_command([command_qos, command_queue])323        if command_qos.result and command_queue.result:324            return command_qos.result + command_queue.result325        return None326    def del_qos(self, port_name):327        command = ovs_vsctl.VSCtlCommand(328            'del-qos',329            [port_name])...
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