Make DHCP provider pluggable

Previously, all dhcp was done explicitly through Neutron.  This commit
adds an interface for dhcp providers, currently implemented by a
Neutron provider and a noop provider.

The provider can be set in the dhcp_provider config option, and
defaults to neutron.

Co-Authored-By: Jim Rollenhagen <jim@jimrollenhagen.com>
Co-Authored-By: Lucas Alvares Gomes <lucasagomes@gmail.com>
Implements: blueprint support-external-dhcp
Closes-Bug: #1282168
Change-Id: I7eea490c573914c6cd2a73056fe3a0ec91065dc0

1 files changed, 30 insertions, 0 deletions

diff --git a/ironic/common/network.py b/ironic/common/network.py
new file mode 100644
index 000000000..de5597905
--- /dev/null
+++ b/ironic/common/network.py
@@ -0,0 +1,30 @@
+# Copyright 2014 Rackspace, Inc.
+#
+#    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.
+
+
+def get_node_vif_ids(task):
+    """Get all VIF ids for a node.
+
+    This function does not handle multi node operations.
+
+    :param task: a TaskManager instance.
+    :returns: A dict of the Node's port UUIDs and their associated VIFs
+
+    """
+    port_vifs = {}
+    for port in task.ports:
+        vif = port.extra.get('vif_port_id')
+        if vif:
+            port_vifs[port.uuid] = vif
+    return port_vifs