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Patch: Detection of running t-rex instance before initializing
[csit.git] / resources / libraries / python / TrafficGenerator.py
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index 9c66982..7f53836 100644 (file)
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -14,84 +14,150 @@
 """Performance testing traffic generator library."""
 
 from robot.api import logger
 """Performance testing traffic generator library."""
 
 from robot.api import logger
+from robot.libraries.BuiltIn import BuiltIn
 
 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.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', '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")
 
 
-__all__ = ['TrafficGenerator']
 
 class TrafficGenerator(object):
 
 class TrafficGenerator(object):
-    """Traffic Generator"""
+    """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
 
     def __init__(self):
         self._result = None
         self._loss = None
         self._sent = None
         self._received = None
-        #T-REX interface order mapping
+        self._node = None
+        # T-REX interface order mapping
         self._ifaces_reordered = 0
 
         self._ifaces_reordered = 0
 
-    def initialize_traffic_generator(self, node, interface1, interface2, test_type):
-        """TG initialization
-        :param node: Traffic generator node
-        :param interface1: interface name of first interface
-        :param interface2: interface name of second interface
-        :test_type: 'L2' or 'L3' - src/dst MAC address
-        :type node: dict
-        :type interface1: str
-        :type interface2: str
+    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 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
         """
 
         :type test_type: str
         :return: nothing
         """
 
-        trex_path = "/opt/trex-core-1.91"
+        trex_path = "/opt/trex-core-2.00"
 
         topo = Topology()
 
 
         topo = Topology()
 
-        if node['type'] != NodeType.TG:
+        if tg_node['type'] != NodeType.TG:
             raise Exception('Node type is not a TG')
             raise Exception('Node type is not a TG')
-        if node['subtype'] == NodeSubTypeTG.TREX:
-            ssh = SSH()
-            ssh.connect(node)
+        self._node = tg_node
 
 
-            iface1_pci = topo.get_interface_pci_addr(node, interface1)
-            iface2_pci = topo.get_interface_pci_addr(node, interface2)
-            iface1_mac = topo.get_interface_mac(node, interface1)
-            iface2_mac = topo.get_interface_mac(node, interface2)
-            if min(iface1_pci, iface2_pci) != iface1_pci:
-                iface1_mac, iface2_mac = iface2_mac, iface1_mac
-                iface1_pci, iface2_pci = iface2_pci, iface1_pci
-                self._ifaces_reordered = 1
+        if tg_node['subtype'] == NodeSubTypeTG.TREX:
+            ssh = SSH()
+            ssh.connect(tg_node)
 
 
-            iface1_mac_hex = "0x"+iface1_mac.replace(":", ",0x")
-            iface2_mac_hex = "0x"+iface2_mac.replace(":", ",0x")
+            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':
 
             if test_type == 'L2':
-                (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_info       :\n"
-                    "          - dest_mac        :   [{}]\n"
-                    "            src_mac         :   [{}]\n"
-                    "          - dest_mac        :   [{}]\n"
-                    "            src_mac         :   [{}]\n"
-                    "EOF'"\
-                    .format(iface1_pci, iface2_pci,
-                            iface2_mac_hex, iface1_mac_hex,
-                            iface1_mac_hex, iface2_mac_hex))
-                if int(ret) != 0:
-                    logger.error("failed to create t-rex config: {}"\
-                    .format(stdout + stderr))
-                    raise RuntimeError('trex config generation error')
+                if1_adj_mac = if2_mac
+                if2_adj_mac = if1_mac
             elif test_type == 'L3':
             elif test_type == 'L3':
-                raise NotImplementedError("L3 test_type not supported")
+                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")
 
             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/ && "
 
             (ret, stdout, stderr) = ssh.exec_command(
                 "sh -c 'cd {0}/scripts/ && "
@@ -101,9 +167,12 @@ class TrafficGenerator(object):
                 logger.error('trex-cfg failed: {0}'.format(stdout + stderr))
                 raise RuntimeError('trex-cfg failed')
 
                 logger.error('trex-cfg failed: {0}'.format(stdout + stderr))
                 raise RuntimeError('trex-cfg failed')
 
+            (ret, _, _) = ssh.exec_command(
+                "sh -c 'pgrep t-rex && sudo pkill t-rex'")
+
             (ret, _, _) = ssh.exec_command(
                 "sh -c 'cd {0}/scripts/ && "
             (ret, _, _) = ssh.exec_command(
                 "sh -c 'cd {0}/scripts/ && "
-                "sudo nohup ./t-rex-64 -i -c 4 --iom 0 > /dev/null 2>&1 &'"
+                "sudo nohup ./t-rex-64 -i -c 7 --iom 0 > /dev/null 2>&1 &'"
                 "> /dev/null"\
                 .format(trex_path))
             if int(ret) != 0:
                 "> /dev/null"\
                 .format(trex_path))
             if int(ret) != 0:
@@ -111,12 +180,12 @@ class TrafficGenerator(object):
 
     @staticmethod
     def teardown_traffic_generator(node):
 
     @staticmethod
     def teardown_traffic_generator(node):
-        """TG teardown
-        :param node: Traffic generator node
+        """TG teardown.
+
+        :param node: Traffic generator node.
         :type node: dict
         :return: nothing
         """
         :type node: dict
         :return: nothing
         """
-
         if node['type'] != NodeType.TG:
             raise Exception('Node type is not a TG')
         if node['subtype'] == NodeSubTypeTG.TREX:
         if node['type'] != NodeType.TG:
             raise Exception('Node type is not a TG')
         if node['subtype'] == NodeSubTypeTG.TREX:
@@ -124,86 +193,121 @@ class TrafficGenerator(object):
             ssh.connect(node)
             (ret, stdout, stderr) = ssh.exec_command(
                 "sh -c 'sudo pkill t-rex'")
             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 traffic_type: Traffic profile.
+        :type traffic_type: str
+        """
+        ssh = SSH()
+        ssh.connect(self._node)
 
 
-    def send_traffic_on(self, nodes_info, duration, rate,
+        _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)
+        elif traffic_type in ["3-node-IPv6"]:
+            (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} -6 "
+                "--p{3}_src_start_ip 2001:1::2 "
+                "--p{3}_src_end_ip 2001:1::FE "
+                "--p{3}_dst_start_ip 2001:2::2 "
+                "--p{4}_src_start_ip 2001:2::2 "
+                "--p{4}_src_end_ip 2001:2::FE "
+                "--p{4}_dst_start_ip 2001:1::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)
+
+        if int(ret) != 0:
+            raise RuntimeError('T-rex stateless runtime error')
+        else:
+            # last line from console output
+            line = stdout.splitlines()[-1]
+
+            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):
                         framesize, traffic_type):
-        """Send traffic from all configured interfaces on TG
-        :param nodes_info: Dictionary containing information on all nodes
-        in topology.
-        :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
+        """Send traffic from all configured interfaces on TG.
+
+        :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 node: dict
         :type duration: str
         :type rate: str
         :type framesize: str
         :type traffic_type: str
         :type duration: str
         :type rate: str
         :type framesize: str
         :type traffic_type: str
-        :return: TG output
+        :return: TG output.
         :rtype: 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')
         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/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/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")
 
         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
 
         return self._result
 
-    def no_traffic_loss_occured(self):
-        """Fail is loss occured in traffic run
+    def no_traffic_loss_occurred(self):
+        """Fail is loss occurred in traffic run.
+
         :return: nothing
         """
         :return: nothing
         """
-
         if self._loss is None:
             raise Exception('The traffic generation has not been issued')
         if self._loss != '0':
         if self._loss is None:
             raise Exception('The traffic generation has not been issued')
         if self._loss != '0':
-            raise Exception('Traffic loss occured: {0}'.format(self._loss))
+            raise Exception('Traffic loss occurred: {0}'.format(self._loss))
Integration tests