--- /dev/null
+#!/usr/bin/python3
+
+# Copyright (c) 2020 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.
+
+"""This script uses T-REX advanced stateful API to drive t-rex instance.
+
+Requirements:
+- T-REX: https://github.com/cisco-system-traffic-generator/trex-core
+ - compiled and running T-REX process (eg. ./t-rex-64 -i)
+ - trex.astf.api library
+- Script must be executed on a node with T-REX instance
+
+Functionality:
+1. Stop any running traffic
+2. Optionally restore reference counter values.
+3. Return conter differences.
+"""
+
+import argparse
+import json
+import sys
+
+from collections import OrderedDict # Needed to parse xstats representation.
+
+sys.path.insert(
+ 0, u"/opt/trex-core-2.73/scripts/automation/trex_control_plane/interactive/"
+)
+from trex.astf.api import *
+
+
+def main():
+ """Stop traffic if any is running. Report xstats."""
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ u"--xstat0", type=str, default=u"",
+ help=u"Reference xstat object if any."
+ )
+ parser.add_argument(
+ u"--xstat1", type=str, default=u"",
+ help=u"Reference xstat object if any."
+ )
+ args = parser.parse_args()
+
+ client = ASTFClient()
+ try:
+ # connect to server
+ client.connect()
+
+ client.acquire(force=True)
+ client.stop()
+
+ # Read the stats after the test,
+ # we need to update values before the last trial started.
+ if args.xstat0:
+ snapshot = eval(args.xstat0)
+ client.ports[0].get_xstats().reference_stats = snapshot
+ if args.xstat1:
+ snapshot = eval(args.xstat1)
+ client.ports[1].get_xstats().reference_stats = snapshot
+ # Now we can call the official method to get differences.
+ xstats0 = client.get_xstats(0)
+ xstats1 = client.get_xstats(1)
+
+ # If TRexError happens, let the script fail with stack trace.
+ finally:
+ client.clear_profile()
+ client.disconnect()
+
+ # TODO: check xstats format
+ print(u"##### statistics port 0 #####")
+ print(json.dumps(xstats0, indent=4, separators=(u",", u": ")))
+ print(u"##### statistics port 1 #####")
+ print(json.dumps(xstats1, indent=4, separators=(u",", u": ")))
+
+ tx_0, rx_0 = xstats0[u"tx_good_packets"], xstats0[u"rx_good_packets"]
+ tx_1, rx_1 = xstats1[u"tx_good_packets"], xstats1[u"rx_good_packets"]
+ lost_a, lost_b = tx_0 - rx_1, tx_1 - rx_0
+
+ client_stats = xstats0[u"traffic"][u"client"]
+ server_stats = xstats1[u"traffic"][u"server"]
+ # Active and established flows UDP/TCP
+ # Client
+ c_act_flows = client_stats[u"m_active_flows"]
+ c_est_flows = client_stats[u"m_est_flows"]
+ l7_data = f"client_active_flows={c_act_flows}, "
+ l7_data += f"client_established_flows={c_est_flows}, "
+ # Server
+ s_act_flows = server_stats[u"m_active_flows"]
+ s_est_flows = server_stats[u"m_est_flows"]
+ l7_data += f"server_active_flows={s_act_flows}, "
+ l7_data += f"server_established_flows={s_est_flows}, "
+ # Some zero counters are not sent
+ # Client
+ # Established connections
+ c_udp_connects = client_stats.get(u"udps_connects", 0)
+ l7_data += f"client_udp_connects={c_udp_connects}, "
+ # Closed connections
+ c_udp_closed = client_stats.get(u"udps_closed", 0)
+ l7_data += f"client_udp_closed={c_udp_closed}, "
+ # Server
+ # Accepted connections
+ s_udp_accepts = server_stats.get(u"udps_accepts", 0)
+ l7_data += f"server_udp_accepts={s_udp_accepts}, "
+ # Closed connections
+ s_udp_closed = server_stats.get(u"udps_closed", 0)
+ # Client
+ # Initiated connections
+ c_tcp_connatt = client_stats.get(u"tcps_connattempt", 0)
+ l7_data += f"client_tcp_connect_inits={c_tcp_connatt}, "
+ # Established connections
+ c_tcp_connects = client_stats.get(u"tcps_connects", 0)
+ l7_data += f"client_tcp_connects={c_tcp_connects}, "
+ # Closed connections
+ c_tcp_closed = client_stats.get(u"tcps_closed", 0)
+ l7_data += f"client_tcp_closed={c_tcp_closed}, "
+ # Server
+ # Accepted connections
+ s_tcp_accepts = server_stats.get(u"tcps_accepts", 0)
+ l7_data += f"server_tcp_accepts={s_tcp_accepts}, "
+ # Established connections
+ s_tcp_connects = server_stats.get(u"tcps_connects", 0)
+ l7_data += f"server_tcp_connects={s_tcp_connects}, "
+ # Closed connections
+ s_tcp_closed = server_stats.get(u"tcps_closed", 0)
+ l7_data += f"server_tcp_closed={s_tcp_closed}, "
+
+ print(f"packets lost from 0 --> 1: {lost_a} pkts")
+ print(f"packets lost from 1 --> 0: {lost_b} pkts")
+
+ total_rcvd, total_sent = rx_0 + rx_1, tx_0 + tx_1
+ total_lost = total_sent - total_rcvd
+ # TODO: Add latency.
+ print(
+ f"cps='unknown', total_received={total_rcvd}, total_sent={total_sent}, "
+ f"frame_loss={total_lost}, "
+ f"latency_stream_0(usec)=-1/-1/-1, latency_stream_1(usec)=-1/-1/-1, "
+ u"latency_hist_stream_0={}, latency_hist_stream_1={}, "
+ f"{l7_data}"
+ )
+
+
+if __name__ == u"__main__":
+ main()
Code Review / csit.git / blobdiff