Hi,
Currently, Ryu does not provide such feature, but how about using "csv" module (Python standard
library)?
e.g.)
diff --git a/ryu/app/simple_switch_13.py b/ryu/app/simple_switch_13.py
index 3e7c598..f509b67 100644
--- a/ryu/app/simple_switch_13.py
+++ b/ryu/app/simple_switch_13.py
@@ -13,11 +13,15 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import csv
+
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3
+from ryu.ofproto import ofproto_v1_3_parser
+from ryu.lib import hub
from ryu.lib.packet import packet
from ryu.lib.packet import ethernet
from ryu.lib.packet import ether_types
@@ -30,6 +34,15 @@ class SimpleSwitch13(app_manager.RyuApp):
super(SimpleSwitch13, self).__init__(*args, **kwargs)
self.mac_to_port = {}
+ self._f = open('port_stats.csv', 'w')
+ self.csv_writer = csv.DictWriter(
+ self._f, ofproto_v1_3_parser.OFPPortStats._fields)
+ self.csv_writer.writeheader()
+
+ def stop(self):
+ super(SimpleSwitch13, self).stop()
+ self._f.close()
+
@set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def switch_features_handler(self, ev):
datapath = ev.msg.datapath
@@ -48,6 +61,8 @@ class SimpleSwitch13(app_manager.RyuApp):
ofproto.OFPCML_NO_BUFFER)]
self.add_flow(datapath, 0, match, actions)
+ hub.spawn(self.send_port_stats_request_loop, datapath)
+
def add_flow(self, datapath, priority, match, actions, buffer_id=None):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
@@ -117,3 +132,21 @@ class SimpleSwitch13(app_manager.RyuApp):
out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id,
in_port=in_port, actions=actions, data=data)
datapath.send_msg(out)
+
+ def send_port_stats_request_loop(self, datapath):
+ while self.is_active:
+ self._send_port_stats_request(datapath)
+
+ hub.sleep(3)
+
+ def _send_port_stats_request(self, datapath):
+ ofp = datapath.ofproto
+ ofp_parser = datapath.ofproto_parser
+
+ req = ofp_parser.OFPPortStatsRequest(datapath, 0, ofp.OFPP_ANY)
+ datapath.send_msg(req)
+
+ @set_ev_cls(ofp_event.EventOFPPortStatsReply, MAIN_DISPATCHER)
+ def port_stats_reply_handler(self, ev):
+ for stat in ev.msg.body:
+ self.csv_writer.writerow(stat._asdict())
$ cat port_stats.csv
port_no,rx_packets,tx_packets,rx_bytes,tx_bytes,rx_dropped,tx_dropped,rx_errors,tx_errors,rx_frame_err,rx_over_err,rx_crc_err,collisions,duration_sec,duration_nsec
4294967294,0,0,0,0,0,0,0,0,0,0,0,0,723,940000000
1,8,32,648,4016,0,0,0,0,0,0,0,0,723,944000000
2,8,32,648,4016,0,0,0,0,0,0,0,0,723,944000000
4294967294,0,0,0,0,0,0,0,0,0,0,0,0,726,944000000
1,8,32,648,4016,0,0,0,0,0,0,0,0,726,948000000
2,8,32,648,4016,0,0,0,0,0,0,0,0,726,948000000
...(snip)
Thanks,
Iwase
On 2017年06月25日 21:25, Sergio Silva wrote:
Dear friend,
Please, I would like to know if there is a possibility that the "port stats" files could be modified
from list to default ".csv". This my suggestion is due to the fact that the standard
"Comma-Separated Values" are files are widely used with numpy, pandas, database and others. For
scientific analysis, statistical surveys with prediction and artificial intelligence. I think if Ryu
would have a lot more to offer if the collected files had the format ".csv" than a list. I thank you.
2017-06-25 9:03 GMT-03:00 Sergio Silva <s...@ecomp.poli.br
<mailto:s...@ecomp.poli.br>>:
Dear friend,
Please, I would like to know if there is a possibility that the "port
stats" files could be
modified from list to default ".csv". This my suggestion is due to the fact
that the standard
"Comma-Separated Values" are files are widely used with numpy, pandas,
database and others. For
scientific analysis, statistical surveys with prediction and artificial
intelligence. I think if
Ryu would have a lot more to offer if the collected files had the format
".csv" than a list. I
thank you.
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