Merge of DHCP changes including dnsmasq callbacks

Conflicts:
	nova/utils.py

1 files changed, 92 insertions, 0 deletions

diff --git a/bin/dhcpleasor.py b/bin/dhcpleasor.py
new file mode 100755
index 000000000..30f8fbdc3
--- /dev/null
+++ b/bin/dhcpleasor.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# All Rights Reserved.
+#
+# Copyright 2010 Anso Labs, LLC
+#
+#    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.
+
+"""
+dhcpleasor.py
+
+Handle lease database updates from DHCP servers.
+"""
+
+import sys
+import os
+import logging
+sys.path.append(os.path.abspath(os.path.join(__file__, "../../")))
+
+logging.debug(sys.path)
+import getopt
+from os import environ
+from nova.compute import linux_net
+from nova.compute import network
+from nova import rpc
+
+from nova import flags
+FLAGS = flags.FLAGS
+
+
+def add_lease(mac, ip, hostname, interface):
+    if FLAGS.fake_rabbit:
+        network.lease_ip(ip)
+    else:
+        rpc.cast(FLAGS.cloud_topic, {"method": "lease_ip",
+                "args" : {"address": ip}})
+
+def old_lease(mac, ip, hostname, interface):
+    logging.debug("Adopted old lease or got a change of mac/hostname")
+
+def del_lease(mac, ip, hostname, interface):
+    if FLAGS.fake_rabbit:
+        network.release_ip(ip)
+    else:
+        rpc.cast(FLAGS.cloud_topic, {"method": "release_ip",
+                "args" : {"address": ip}})
+
+def init_leases(interface):
+    net = network.get_network_by_interface(interface)
+    res = ""
+    for host_name in net.hosts:
+        res += "%s\n" % linux_net.hostDHCP(net, host_name, net.hosts[host_name])
+    return res
+
+
+def main(argv=None):
+    if argv is None:
+        argv = sys.argv
+    interface = environ.get('DNSMASQ_INTERFACE', 'br0')
+    if int(environ.get('TESTING', '0')):
+        FLAGS.fake_rabbit = True
+        FLAGS.redis_db = 8
+        FLAGS.network_size = 32
+        FLAGS.fake_libvirt=True
+        FLAGS.fake_network=True
+        FLAGS.fake_users = True
+    action = argv[1]
+    if action in ['add','del','old']:
+        mac = argv[2]
+        ip = argv[3]
+        hostname = argv[4]
+        logging.debug("Called %s for mac %s with ip %s and hostname %s on interface %s" % (action, mac, ip, hostname, interface))
+        globals()[action+'_lease'](mac, ip, hostname, interface)
+    else:
+        print init_leases(interface)
+    exit(0)
+
+if __name__ == "__main__":
+    sys.exit(main())