Add Network Utilization Scenario

This scenario reads network interface utilization stats and data sent/receive
rate using "sar -n".

Change-Id: I9c69f03c017bc2f8a5d87a4de286af147e8a086a
Signed-off-by: JingLu5 <lvjing5@huawei.com>

1 files changed, 186 insertions, 0 deletions

diff --git a/yardstick/benchmark/scenarios/networking/netutilization.py b/yardstick/benchmark/scenarios/networking/netutilization.py
new file mode 100644
index 000000000..ea43e6077
--- /dev/null
+++ b/yardstick/benchmark/scenarios/networking/netutilization.py
@@ -0,0 +1,186 @@
+##############################################################################
+# Copyright (c) 2016 Huawei Technologies Co.,Ltd and other.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+import logging
+import re
+
+import yardstick.ssh as ssh
+from yardstick.benchmark.scenarios import base
+
+LOG = logging.getLogger(__name__)
+
+
+class NetUtilization(base.Scenario):
+    """Collect network utilization statistics.
+
+    This scenario reads statistics from the network devices on a Linux host.
+    Network utilization statistics are read using the utility 'sar'.
+
+    The following values are displayed:
+
+    IFACE: Name of the network interface for which statistics are reported.
+
+    rxpck/s: Total number of packets received per second.
+
+    txpck/s: Total number of packets transmitted per second.
+
+    rxkB/s: Total number of kilobytes received per second.
+
+    txkB/s: Total number of kilobytes transmitted per second.
+
+    rxcmp/s: Number of compressed packets received per second (for cslip etc.).
+
+    txcmp/s: Number of compressed packets transmitted per second.
+
+    rxmcst/s: Number of multicast packets received per second.
+
+    %ifutil: Utilization percentage of the network interface. For half-duplex
+    interfaces, utilization is calculated using the sum of rxkB/s and txkB/s
+    as a percentage of the interface speed. For full-duplex, this is the
+    greater  of rxkB/S or txkB/s.
+
+    Parameters
+        interval - Time interval to measure network utilization.
+            type:       [int]
+            unit:       seconds
+            default:    1
+
+        count - Number of times to measure network utilization.
+            type:       [int]
+            unit:       N/A
+            default:    1
+    """
+
+    __scenario_type__ = "NetUtilization"
+
+    NET_UTILIZATION_FIELD_SIZE = 8
+
+    def __init__(self, scenario_cfg, context_cfg):
+        """Scenario construction."""
+        self.scenario_cfg = scenario_cfg
+        self.context_cfg = context_cfg
+        self.setup_done = False
+
+    def setup(self):
+        """Scenario setup."""
+        host = self.context_cfg['host']
+        user = host.get('user', 'ubuntu')
+        ip = host.get('ip', None)
+        key_filename = host.get('key_filename', '~/.ssh/id_rsa')
+
+        LOG.info("user:%s, host:%s", user, ip)
+        self.client = ssh.SSH(user, ip, key_filename=key_filename)
+        self.client.wait(timeout=600)
+
+        self.setup_done = True
+
+    def _execute_command(self, cmd):
+        """Execute a command on target."""
+        LOG.info("Executing: %s" % cmd)
+        status, stdout, stderr = self.client.execute(cmd)
+        if status:
+            raise RuntimeError("Failed executing command: ",
+                               cmd, stderr)
+        return stdout
+
+    def _filtrate_result(self, raw_result):
+        """Filtrate network utilization statistics."""
+        fields = []
+        maximum = {}
+        minimum = {}
+        average = {}
+
+        time_marker = re.compile("^([0-9]+):([0-9]+):([0-9]+)$")
+        ampm_marker = re.compile("(AM|PM)$")
+
+        # Parse network utilization stats
+        for row in raw_result.split('\n'):
+            line = row.split()
+
+            if line and re.match(time_marker, line[0]):
+                if re.match(ampm_marker, line[1]):
+                    del line[:2]
+
+                if line[0] == 'IFACE':
+                    # header fields
+                    fields = line[1:]
+                    if len(fields) != NetUtilization.\
+                            NET_UTILIZATION_FIELD_SIZE:
+                        raise RuntimeError("network_utilization: unexpected\
+                                           field size", fields)
+                else:
+                    # value fields
+                    net_interface = line[0]
+                    values = line[1:]
+
+                    if values and len(values) == len(fields):
+                        temp_dict = dict(zip(fields, values))
+                        if net_interface not in maximum:
+                            maximum[net_interface] = temp_dict
+                        else:
+                            for item in temp_dict:
+                                if float(maximum[net_interface][item]) <\
+                                   float(temp_dict[item]):
+                                    maximum[net_interface][item] = \
+                                        temp_dict[item]
+
+                        if net_interface not in minimum:
+                            minimum[net_interface] = temp_dict
+                        else:
+                            for item in temp_dict:
+                                if float(minimum[net_interface][item]) >\
+                                   float(temp_dict[item]):
+                                    minimum[net_interface][item] = \
+                                        temp_dict[item]
+                    else:
+                        raise RuntimeError("network_utilization: parse error",
+                                           fields, line)
+
+            elif line and line[0] == 'Average:':
+                del line[:1]
+
+                if line[0] == 'IFACE':
+                    # header fields
+                    fields = line[1:]
+                    if len(fields) != NetUtilization.\
+                            NET_UTILIZATION_FIELD_SIZE:
+                        raise RuntimeError("network_utilization average: \
+                                           unexpected field size", fields)
+                else:
+                    # value fields
+                    net_interface = line[0]
+                    values = line[1:]
+                    if values and len(values) == len(fields):
+                        average[net_interface] = dict(zip(fields, values))
+                    else:
+                        raise RuntimeError("network_utilization average: \
+                                           parse error", fields, line)
+
+        return {'network_utilization_maximun': maximum,
+                'network_utilization_minimum': minimum,
+                'network_utilization_average': average}
+
+    def _get_network_utilization(self):
+        """Get network utilization statistics using sar."""
+        options = self.scenario_cfg["options"]
+        interval = options.get('interval', 1)
+        count = options.get('count', 1)
+
+        cmd = "sudo sar -n DEV %d %d" % (interval, count)
+
+        raw_result = self._execute_command(cmd)
+        result = self._filtrate_result(raw_result)
+
+        return result
+
+    def run(self, result):
+        """Read statistics."""
+        if not self.setup_done:
+            self.setup()
+
+        result.update(self._get_network_utilization())