1 files changed, 136 insertions, 0 deletions
diff --git a/vicn/resource/icn/nfd.py b/vicn/resource/icn/nfd.py
new file mode 100644
index 00000000..c65fdeb8
--- /dev/null
+++ b/vicn/resource/icn/nfd.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2017 Cisco and/or its affiliates.
+#
+# 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.
+#
+
+import logging
+import re
+
+from vicn.core.exception                import ResourceNotFound
+from vicn.core.task                     import inline_task, BashTask
+from vicn.core.task                     import ParseRegexTask
+from vicn.resource.icn.forwarder        import Forwarder
+from vicn.resource.icn.icn_application  import ICN_SUITE_NDN
+
+log = logging.getLogger(__name__)
+
+NFD_CONF_FILE = "/etc/ndn/nfd.conf"
+
+CMD_SET_STRATEGY_CACHE = '\n'.join([
+    'sed -i "s/^.*cs_max_packets .*$/  cs_max_packets {nfd.cache_size}/" ' \
+        '{conf_file}',
+    'sed -i "0,/\/ / s/\/localhost\/nfd\/strategy\/.*/' \
+        '\/localhost\/nfd\/strategy\/{nfd.fw_strategy}/" {conf_file}',
+    'service nfd restart'])
+CMD_RESET_CACHE = '''
+sed -i "s/^.*cs_max_packets .*$/  cs_max_packets 65536/" {conf_file}
+service nfd restart
+'''
+
+CMD_ADD_ROUTE = 'nfdc register {route.prefix} {route.face.nfd_uri}'
+# or: nfdc register {route.prefix} {route.face.id}
+
+CMD_REMOVE_ROUTE = 'nfdc unregister {route.prefix} {route.face.nfd_uri}'
+# or: nfdc unregister {route.prefix} {route.face.id}
+
+CMD_ADD_FACE = 'nfdc create {face.nfdc_flags} {face.nfd_uri}'
+
+CMD_REMOVE_FACE = 'nfdc destroy {face.id}'
+# or: nfdc destroy {face.nfd_uri}
+
+# FIXME redundant with Forwarder.FaceType
+layer_2_protocols = ["udp", "udp4", "tcp", "tcp4", "ether"]
+
+NFD_DEFAULT_PORT = 6363
+
+# Regular expressions used for parsing nfdc results
+STR_ADD_FACE = ('Face creation succeeded: ControlParameters\(FaceId: '
+        '(?P<id>.*?), Uri: (?P<face_uri>.*?), \)')
+RX_ADD_FACE  = re.compile(STR_ADD_FACE)
+
+class NFD(Forwarder):
+    """
+    Resource: NFD
+    """
+
+    __capabilities__ = set(['ICN_SUITE_NDN'])
+    __service_name__ = 'nfd'
+    __package_names__ = ['nfd']
+
+    #--------------------------------------------------------------------------
+    # Resource lifecycle
+    #--------------------------------------------------------------------------
+
+    @inline_task
+    def __get__(self):
+        # NFD is assumed not to exist
+        raise ResourceNotFound
+
+    def __create__(self):
+        # Modify the configuration file before running the forwarder service
+        conf = BashTask(self.node, CMD_SET_STRATEGY_CACHE, {'nfd': self})
+        forwarder = Forwarder.__create__(self)
+        return conf.then(forwarder)
+
+    def __delete__(self):
+        raise NotImplementedError
+
+    #--------------------------------------------------------------------------
+    # Attributes
+    #--------------------------------------------------------------------------
+
+    @inline_task
+    def _get_routes(self):
+        return {'routes': list()}
+
+    @inline_task
+    def _add_routes(self, route):
+        return BashTask(self.node, CMD_ADD_ROUTE, {'route': route})
+
+    @inline_task
+    def _remove_routes(self, route):
+        return BashTask(self.node, CMD_REMOVE_ROUTE, {'route': route})
+
+    @inline_task
+    def _get_faces(self):
+        return {'faces': list()}
+
+    @inline_task
+    def _add_faces(self, face):
+        add_face = BashTask(self.node, CMD_ADD_FACE, {'face': face})
+        set_face_id = ParseRegexTask(RX_ADD_FACE)
+        return add_face.compose(set_face_id)
+
+    @inline_task
+    def _remove_faces(self, face):
+        return BashTask(self.node, CMD_REMOVE_FACE, {'face': face})
+
+    #--------------------------------------------------------------------------
+    # Methods
+    #--------------------------------------------------------------------------
+
+    def __method_reset_cache__(self, conf_file):
+        return BashTask(self.node, CMD_RESET_CACHE, {'conf_file': conf_file})
+
+    #--------------------------------------------------------------------------
+    # Internal methods
+    #--------------------------------------------------------------------------
+
+    def _get_default_port(self):
+        return NFD_DEFAULT_PORT
+
+    def _def_protocol_suite(self):
+        return ICN_SUITE_NDN