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+# Copyright 2015 Intel Corporation.
+#
+# 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.
+
+"""VSwitch controller for Physical to VM to Physical deployment
+"""
+
+import logging
+
+from core.vswitch_controller import IVswitchController
+from vswitches.utils import add_ports_to_flow
+from conf import settings
+
+_FLOW_TEMPLATE = {
+ 'idle_timeout': '0'
+}
+
+class VswitchControllerPVVP(IVswitchController):
+ """VSwitch controller for PVVP deployment scenario.
+
+ Attributes:
+ _vswitch_class: The vSwitch class to be used.
+ _vswitch: The vSwitch object controlled by this controller
+ _deployment_scenario: A string describing the scenario to set-up in the
+ constructor.
+ """
+ def __init__(self, vswitch_class, bidir=False):
+ """Initializes up the prerequisites for the PVVP deployment scenario.
+
+ :vswitch_class: the vSwitch class to be used.
+ """
+ self._logger = logging.getLogger(__name__)
+ self._vswitch_class = vswitch_class
+ self._vswitch = vswitch_class()
+ self._deployment_scenario = "PVVP"
+ self._bidir = bidir
+ self._logger.debug('Creation using ' + str(self._vswitch_class))
+
+ def setup(self):
+ """ Sets up the switch for PVVP
+ """
+ self._logger.debug('Setup using ' + str(self._vswitch_class))
+
+ try:
+ self._vswitch.start()
+
+ bridge = settings.getValue('VSWITCH_BRIDGE_NAME')
+ self._vswitch.add_switch(bridge)
+
+ (_, phy1_number) = self._vswitch.add_phy_port(bridge)
+ (_, phy2_number) = self._vswitch.add_phy_port(bridge)
+ (_, vport1_number) = self._vswitch.add_vport(bridge)
+ (_, vport2_number) = self._vswitch.add_vport(bridge)
+ (_, vport3_number) = self._vswitch.add_vport(bridge)
+ (_, vport4_number) = self._vswitch.add_vport(bridge)
+
+ self._vswitch.del_flow(bridge)
+ flow1 = add_ports_to_flow(_FLOW_TEMPLATE, phy1_number,
+ vport1_number)
+ flow2 = add_ports_to_flow(_FLOW_TEMPLATE, vport2_number,
+ vport3_number)
+ flow3 = add_ports_to_flow(_FLOW_TEMPLATE, vport4_number,
+ phy2_number)
+ self._vswitch.add_flow(bridge, flow1)
+ self._vswitch.add_flow(bridge, flow2)
+ self._vswitch.add_flow(bridge, flow3)
+
+ if self._bidir:
+ flow4 = add_ports_to_flow(_FLOW_TEMPLATE, phy2_number,
+ vport4_number)
+ flow5 = add_ports_to_flow(_FLOW_TEMPLATE, vport3_number,
+ vport2_number)
+ flow6 = add_ports_to_flow(_FLOW_TEMPLATE, vport1_number,
+ phy1_number)
+ self._vswitch.add_flow(bridge, flow4)
+ self._vswitch.add_flow(bridge, flow5)
+ self._vswitch.add_flow(bridge, flow6)
+
+ except:
+ self._vswitch.stop()
+ raise
+
+ def stop(self):
+ """Tears down the switch created in setup().
+ """
+ self._logger.debug('Stop using ' + str(self._vswitch_class))
+ self._vswitch.stop()
+
+ def __enter__(self):
+ self.setup()
+
+ def __exit__(self, type_, value, traceback):
+ self.stop()
+
+ def get_vswitch(self):
+ """See IVswitchController for description
+ """
+ return self._vswitch
+
+ def get_ports_info(self):
+ """See IVswitchController for description
+ """
+ self._logger.debug('get_ports_info using ' + str(self._vswitch_class))
+ return self._vswitch.get_ports(settings.getValue('VSWITCH_BRIDGE_NAME'))