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-rw-r--r--core/pktfwd_controller.py68
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+# Copyright 2016 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.
+
+"""Packet forwarder controller for Physical to Physical deployment
+"""
+
+import logging
+
+from conf import settings
+
+
+class PktFwdController(object):
+ """Packet forwarder controller for P2P deployment scenario.
+
+ Attributes:
+ _pktfwd_class: The packet forwarder class to be used.
+ _pktfwd: The packet forwarder object controlled by this controller
+ """
+ def __init__(self, pktfwd_class):
+ """Initializes up the prerequisites for the P2P deployment scenario.
+
+ :vswitch_class: the vSwitch class to be used.
+ """
+ self._logger = logging.getLogger(__name__)
+ self._pktfwd_class = pktfwd_class
+ self._pktfwd = pktfwd_class()
+ self._logger.debug('Creation using ' + str(self._pktfwd_class))
+
+ def setup(self):
+ """Sets up the packet forwarder for p2p.
+ """
+ self._logger.debug('Setup using ' + str(self._pktfwd_class))
+
+ try:
+ self._pktfwd.start()
+ except:
+ self._pktfwd.stop()
+ raise
+
+ def stop(self):
+ """Tears down the packet forwarder created in setup().
+ """
+ self._logger.debug('Stop using ' + str(self._pktfwd_class))
+ self._pktfwd.stop()
+
+ def __enter__(self):
+ self.setup()
+
+ def __exit__(self, type_, value, traceback):
+ self.stop()
+
+ def get_pktfwd(self):
+ """Get the controlled packet forwarder
+
+ :return: The controlled IPktFwd
+ """
+ return self._pktfwd