"""Performance testing traffic generator library."""
from robot.api import logger
+from robot.libraries.BuiltIn import BuiltIn
+from robot.api.deco import keyword
from resources.libraries.python.ssh import SSH
from resources.libraries.python.topology import NodeType
from resources.libraries.python.topology import NodeSubTypeTG
+from resources.libraries.python.topology import Topology
+from resources.libraries.python.DropRateSearch import DropRateSearch
-__all__ = ['TrafficGenerator']
+__all__ = ['TrafficGenerator', 'TGDropRateSearchImpl']
+
+class TGDropRateSearchImpl(DropRateSearch):
+ """Drop Rate Search implementation"""
+
+ def __init__(self):
+ super(TGDropRateSearchImpl, self).__init__()
+
+ def measure_loss(self, rate, frame_size, loss_acceptance,
+ loss_acceptance_type, traffic_type):
+
+ #we need instance of TrafficGenerator instantiated by Robot Framework
+ #to be able to use trex_stateless_remote_exec method
+ tg_instance = BuiltIn().get_library_instance('resources.libraries.python.TrafficGenerator')
+
+ if tg_instance._node['subtype'] is None:
+ raise Exception('TG subtype not defined')
+ elif tg_instance._node['subtype'] == NodeSubTypeTG.TREX:
+ unit_rate = str(rate) + self.get_rate_type_str()
+ tg_instance.trex_stateless_remote_exec(self.get_duration(), unit_rate,
+ frame_size, traffic_type)
+
+ #TODO:getters for tg_instance and loss_acceptance_type
+ logger.trace("comparing: {} < {} ".format(tg_instance._loss, loss_acceptance))
+ if float(tg_instance._loss) > float(loss_acceptance):
+ return False
+ else:
+ return True
+ else:
+ raise NotImplementedError("TG subtype not supported")
class TrafficGenerator(object):
"""Traffic Generator"""
+ #use one instance of TrafficGenerator for all tests in test suite
+ ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
+
def __init__(self):
self._result = None
self._loss = None
self._sent = None
self._received = None
+ self._node = None
+ #T-REX interface order mapping
+ self._ifaces_reordered = 0
- @staticmethod
- def initialize_traffic_generator(node, interface1, interface2):
+ def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2,
+ dut1_node, dut1_if1, dut1_if2,
+ dut2_node, dut2_if1, dut2_if2,
+ test_type):
"""TG initialization
- :param node: Traffic generator node
- :param interface1: interface name of first interface
- :param interface2: interface name of second interface
- :type node: dict
- :type interface1: str
- :type interface2: str
+ :param tg_node: Traffic generator node
+ :param tg_if1: TG - name of first interface
+ :param tg_if2: TG - name of second interface
+ :param dut1_node: DUT1 node
+ :param dut1_if1: DUT1 - name of first interface
+ :param dut1_if2: DUT1 - name of second interface
+ :param dut2_node: DUT2 node
+ :param dut2_if1: DUT2 - name of first interface
+ :param dut2_if2: DUT2 - name of second interface
+ :test_type: 'L2' or 'L3' - src/dst MAC address
+ :type tg_node: dict
+ :type tg_if1: str
+ :type tg_if2: str
+ :type dut1_node: dict
+ :type dut1_if1: str
+ :type dut1_if2: str
+ :type dut2_node: dict
+ :type dut2_if1: str
+ :type dut2_if2: str
+ :type test_type: str
:return: nothing
"""
trex_path = "/opt/trex-core-1.91"
- if node['type'] != NodeType.TG:
+ topo = Topology()
+
+ if tg_node['type'] != NodeType.TG:
raise Exception('Node type is not a TG')
- if node['subtype'] == NodeSubTypeTG.TREX:
+ self._node = tg_node
+
+ if tg_node['subtype'] == NodeSubTypeTG.TREX:
ssh = SSH()
- ssh.connect(node)
+ ssh.connect(tg_node)
+
+ if1_pci = topo.get_interface_pci_addr(tg_node, tg_if1)
+ if2_pci = topo.get_interface_pci_addr(tg_node, tg_if2)
+ if1_mac = topo.get_interface_mac(tg_node, tg_if1)
+ if2_mac = topo.get_interface_mac(tg_node, tg_if2)
+
+ if test_type == 'L2':
+ if1_adj_mac = if2_mac
+ if2_adj_mac = if1_mac
+ elif test_type == 'L3':
+ if1_adj_mac = topo.get_interface_mac(dut1_node, dut1_if1)
+ if2_adj_mac = topo.get_interface_mac(dut2_node, dut2_if2)
+ else:
+ raise Exception("test_type unknown")
+
+ if min(if1_pci, if2_pci) != if1_pci:
+ if1_mac, if2_mac = if2_mac, if1_mac
+ if1_pci, if2_pci = if2_pci, if1_pci
+ if1_adj_mac, if2_adj_mac = if2_adj_mac, if1_adj_mac
+ self._ifaces_reordered = 1
+
+ if1_mac_hex = "0x"+if1_mac.replace(":", ",0x")
+ if2_mac_hex = "0x"+if2_mac.replace(":", ",0x")
+ if1_adj_mac_hex = "0x"+if1_adj_mac.replace(":", ",0x")
+ if2_adj_mac_hex = "0x"+if2_adj_mac.replace(":", ",0x")
+
+ (ret, stdout, stderr) = ssh.exec_command(
+ "sudo sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
+ "- port_limit : 2\n"
+ " version : 2\n"
+ " interfaces : [\"{}\",\"{}\"]\n"
+ " port_bandwidth_gb : 10\n"
+ " port_info :\n"
+ " - dest_mac : [{}]\n"
+ " src_mac : [{}]\n"
+ " - dest_mac : [{}]\n"
+ " src_mac : [{}]\n"
+ "EOF'"\
+ .format(if1_pci, if2_pci,
+ if1_adj_mac_hex, if1_mac_hex,
+ if2_adj_mac_hex, if2_mac_hex))
+ if int(ret) != 0:
+ logger.error("failed to create t-rex config: {}"\
+ .format(stdout + stderr))
+ raise RuntimeError('trex config generation error')
(ret, stdout, stderr) = ssh.exec_command(
"sh -c 'cd {0}/scripts/ && "
ssh.connect(node)
(ret, stdout, stderr) = ssh.exec_command(
"sh -c 'sudo pkill t-rex'")
+ if int(ret) != 0:
+ logger.error('pkill t-rex failed: {0}'.format(stdout + stderr))
+ raise RuntimeError('pkill t-rex failed')
+
+ def trex_stateless_remote_exec(self, duration, rate, framesize,
+ traffic_type):
+ """Execute stateless script on remote node over ssh
+
+ :param node: remote node
+ :param traffic_type: Traffic profile
+ :type node: dict
+ :type traffic_type: str
+ """
+ ssh = SSH()
+ ssh.connect(self._node)
+
+ _p0 = 1
+ _p1 = 2
+
+ if self._ifaces_reordered != 0:
+ _p0, _p1 = _p1, _p0
+
+ if traffic_type in ["3-node-xconnect", "3-node-bridge"]:
+ (ret, stdout, stderr) = ssh.exec_command(
+ "sh -c '/tmp/openvpp-testing/resources/tools/t-rex/"
+ "t-rex-stateless.py "
+ "-d {0} -r {1} -s {2} "
+ "--p{3}_src_start_ip 10.10.10.1 "
+ "--p{3}_src_end_ip 10.10.10.254 "
+ "--p{3}_dst_start_ip 20.20.20.1 "
+ "--p{4}_src_start_ip 20.20.20.1 "
+ "--p{4}_src_end_ip 20.20.20.254 "
+ "--p{4}_dst_start_ip 10.10.10.1'".\
+ format(duration, rate, framesize, _p0, _p1),\
+ timeout=int(duration)+60)
+ elif traffic_type in ["3-node-IPv4"]:
+ (ret, stdout, stderr) = ssh.exec_command(
+ "sh -c '/tmp/openvpp-testing/resources/tools/t-rex/"
+ "t-rex-stateless.py "
+ "-d {0} -r {1} -s {2} "
+ "--p{3}_src_start_ip 10.10.10.2 "
+ "--p{3}_src_end_ip 10.10.10.254 "
+ "--p{3}_dst_start_ip 20.20.20.2 "
+ "--p{4}_src_start_ip 20.20.20.2 "
+ "--p{4}_src_end_ip 20.20.20.254 "
+ "--p{4}_dst_start_ip 10.10.10.2'".\
+ format(duration, rate, framesize, _p0, _p1),\
+ timeout=int(duration)+60)
+ else:
+ raise NotImplementedError('Unsupported traffic type')
+
+ logger.trace(ret)
+ logger.trace(stdout)
+ logger.trace(stderr)
+
+ #last line from console output
+ line = stdout.splitlines()[-1]
- def send_traffic_on(self, nodes_info, duration, rate,
+ self._result = line
+ logger.info('TrafficGen result: {0}'.format(self._result))
+
+ self._received = self._result.split(', ')[1].split('=')[1]
+ self._sent = self._result.split(', ')[2].split('=')[1]
+ self._loss = self._result.split(', ')[3].split('=')[1]
+
+ def send_traffic_on(self, node, duration, rate,
framesize, traffic_type):
"""Send traffic from all configured interfaces on TG
- :param nodes_info: Dictionary containing information on all nodes
- in topology.
+ :param node: Dictionary containing TG information
:param duration: Duration of test traffic generation in seconds
:param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...)
:param framesize: Frame size (L2) in Bytes
:param traffic_type: Traffic profile
- :type nodes_info: dict
+ :type node: dict
:type duration: str
:type rate: str
:type framesize: str
:rtype: str
"""
- node = nodes_info["TG"]
-
if node['type'] != NodeType.TG:
raise Exception('Node type is not a TG')
if node['subtype'] is None:
raise Exception('TG subtype not defined')
-
- ssh = SSH()
- ssh.connect(node)
-
- if node['subtype'] == NodeSubTypeTG.TREX:
- if traffic_type in ["3-node-xconnect", "3-node-bridge"]:
- (ret, stdout, stderr) = ssh.exec_command(
- "sh -c '/tmp/openvpp-testing/resources/tools/t-rex-stateless.py "
- "-d {0} -r {1} -s {2} "
- "--p1_src_start_ip 10.10.10.1 "
- "--p1_src_end_ip 10.10.10.254 "
- "--p1_dst_start_ip 20.20.20.1 "
- "--p2_src_start_ip 20.20.20.1 "
- "--p2_src_end_ip 20.20.20.254 "
- "--p2_dst_start_ip 10.10.10.1'".\
- format(duration, rate, framesize), timeout=int(duration)+60)
- elif traffic_type in ["3-node-IPv4"]:
- (ret, stdout, stderr) = ssh.exec_command(
- "sh -c '/tmp/openvpp-testing/resources/tools/t-rex-stateless.py "
- "-d {0} -r {1} -s {2} "
- "--p1_src_start_ip 10.10.10.2 "
- "--p1_src_end_ip 10.10.10.254 "
- "--p1_dst_start_ip 20.20.20.2 "
- "--p2_src_start_ip 20.20.20.2 "
- "--p2_src_end_ip 20.20.20.254 "
- "--p2_dst_start_ip 10.10.10.2'".\
- format(duration, rate, framesize),\
- timeout=int(duration)+60)
- else:
- raise NotImplementedError('Unsupported traffic type')
-
+ elif node['subtype'] == NodeSubTypeTG.TREX:
+ self.trex_stateless_remote_exec(duration, rate, framesize,
+ traffic_type)
else:
raise NotImplementedError("TG subtype not supported")
- logger.trace(ret)
- logger.trace(stdout)
- logger.trace(stderr)
-
- for line in stdout.splitlines():
- pass
-
- self._result = line
- logger.info('TrafficGen result: {0}'.format(self._result))
-
- self._loss = self._result.split(', ')[3].split('=')[1]
-
return self._result
def no_traffic_loss_occured(self):
Code Review / csit.git / blobdiff