This gets a netflow packet and sends it to the other
applications. Each application can use this to get netflow
messages as an event.
Signed-off-by: OHMURA Kei <ohmura....@lab.ntt.co.jp>
---
ryu/flags.py | 8 +++++-
ryu/lib/xflow/netflow_collector.py | 54 ++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+), 1 deletion(-)
create mode 100644 ryu/lib/xflow/netflow_collector.py
diff --git a/ryu/flags.py b/ryu/flags.py
index 533f7de..4a0a2d7 100644
--- a/ryu/flags.py
+++ b/ryu/flags.py
@@ -40,5 +40,11 @@ CONF.register_cli_opts([
'context'),
cfg.StrOpt('quantum-controller-addr', default=None,
help='openflow method:address:port to set controller of'
- 'ovs bridge')
+ 'ovs bridge'),
+
+ # lib/xflow/netflow_collector
+ cfg.StrOpt('netflow-listen-host', default='',
+ help='netflow listen host'),
+ cfg.IntOpt('netflow-listen-port', default=2055,
+ help='netflow listen port')
])
diff --git a/ryu/lib/xflow/netflow_collector.py
b/ryu/lib/xflow/netflow_collector.py
new file mode 100644
index 0000000..cf1e34b
--- /dev/null
+++ b/ryu/lib/xflow/netflow_collector.py
@@ -0,0 +1,54 @@
+# Copyright (C) 2013 Nippon Telegraph and Telephone 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.
+
+
+import gevent
+
+from oslo.config import cfg
+from gevent import socket
+from ryu.base import app_manager
+from ryu.controller import event
+from ryu.lib.xflow import netflow
+
+
+CONF = cfg.CONF
+BUFSIZE = 65535 # Should we use flexible length?
+
+
+class EventNetFlow(event.EventBase):
+ def __init__(self, msg, addrport):
+ super(EventNetFlow, self).__init__()
+ self.msg = msg
+ self.addr, self.port = addrport
+
+
+class NetFlowCollector(app_manager.RyuApp):
+ def __init__(self):
+ super(NetFlowCollector, self).__init__()
+ self.name = 'netflow_collector'
+ self._start_recv()
+
+ def _recv_loop(self):
+ while True:
+ (data, addrport) = self.sock.recvfrom(BUFSIZE)
+ msg = netflow.NetFlow.parser(data)
+ if msg:
+ self.send_event_to_observers(EventNetFlow(msg, addrport))
+
+ def _start_recv(self):
+ self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+ self.sock.bind((CONF.netflow_listen_host,
+ CONF.netflow_listen_port))
+ gevent.spawn_later(0, self._recv_loop)
--
1.7.9.5
------------------------------------------------------------------------------
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