1 files changed, 104 insertions, 0 deletions
diff --git a/vicn/resource/linux/bridge.py b/vicn/resource/linux/bridge.py
new file mode 100644
index 00000000..882f0226
--- /dev/null
+++ b/vicn/resource/linux/bridge.py
@@ -0,0 +1,104 @@
+#!/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
+
+from vicn.core.address_mgr          import AddressManager
+from vicn.core.attribute            import Attribute, Multiplicity
+from vicn.core.exception            import ResourceNotFound
+from vicn.core.requirement          import Requirement
+from vicn.core.task                 import inline_task
+from vicn.resource.channel          import Channel
+from vicn.resource.linux.bridge_mgr import BridgeManager
+from vicn.resource.linux.net_device import BaseNetDevice
+
+log = logging.getLogger(__name__)
+
+# FIXME This should use the AddressManager to get allocated a name that does
+# not exist
+DEFAULT_BRIDGE_NAME = 'br0'
+
+class Bridge(Channel, BaseNetDevice):
+    """
+    Resource: Bridge
+    """
+    node = Attribute(
+            reverse_name = 'bridge',
+            reverse_description = 'Main bridge',
+            reverse_auto = 'true',
+            multiplicity = Multiplicity.OneToOne,
+            requirements = [
+                Requirement('bridge_manager')
+            ])
+    device_name = Attribute(
+            default = DEFAULT_BRIDGE_NAME,
+            mandatory = False)
+
+    #--------------------------------------------------------------------------
+    # Constructor / Accessors
+    #--------------------------------------------------------------------------
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(self, *args, **kwargs)
+        self.prefix = 'br'
+        self.netdevice_type = 'bridge'
+
+    #--------------------------------------------------------------------------
+    # Resource lifecycle
+    #--------------------------------------------------------------------------
+
+    @inline_task
+    def __get__(self):
+        # FIXME we currently force the recreation of the bridge, delegating the
+        # check to the creation function
+        raise ResourceNotFound
+
+    def __create__(self):
+        # FIXME : reserves .1 IP address for the bridge, provided no other
+        # class uses this trick
+        AddressManager().get_ip(self)
+        return self.node.bridge_manager.add_bridge(self.device_name)
+
+    # Everything should be handled by BaseNetDevice
+    __delete__ = None 
+
+    #--------------------------------------------------------------------------
+    # Resource lifecycle
+    #--------------------------------------------------------------------------
+
+    def _add_interface(self, interface, vlan=None):
+        """
+        Returns:
+            Task
+        """
+        return self.node.bridge_manager.add_interface(self.device_name, 
+                interface.device_name, vlan)
+
+    def __method_add_interface__(self, interface, vlan=None):
+        return self._add_interface(interface, vlan)
+
+    def _remove_interface(self, interface):
+        """
+        Returns:
+            Task
+        """
+        log.info('Removing interface {} from bridge {}'.format(
+                interface.device_name, self.name))
+        return self.node.bridge_manager.del_interface(self.device_name, 
+                interface.device_name)
+