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DropRateSearch library
[csit.git] / resources / libraries / python / TrafficGenerator.py
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index fb9ae4d..c3af086 100644 (file)
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -14,17 +14,50 @@
 """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 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.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"""
 
 
 class TrafficGenerator(object):
     """Traffic Generator"""
 
+    #use one instance of TrafficGenerator for all tests in test suite
     ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
 
     def __init__(self):
     ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
 
     def __init__(self):
@@ -32,6 +65,7 @@ class TrafficGenerator(object):
         self._loss = None
         self._sent = None
         self._received = None
         self._loss = None
         self._sent = None
         self._received = None
+        self._node = None
         #T-REX interface order mapping
         self._ifaces_reordered = 0
 
         #T-REX interface order mapping
         self._ifaces_reordered = 0
 
@@ -69,6 +103,8 @@ class TrafficGenerator(object):
 
         if tg_node['type'] != NodeType.TG:
             raise Exception('Node type is not a TG')
 
         if tg_node['type'] != NodeType.TG:
             raise Exception('Node type is not a TG')
+        self._node = tg_node
+
         if tg_node['subtype'] == NodeSubTypeTG.TREX:
             ssh = SSH()
             ssh.connect(tg_node)
         if tg_node['subtype'] == NodeSubTypeTG.TREX:
             ssh = SSH()
             ssh.connect(tg_node)
@@ -103,6 +139,7 @@ class TrafficGenerator(object):
                 "- port_limit      : 2\n"
                 "  version         : 2\n"
                 "  interfaces      : [\"{}\",\"{}\"]\n"
                 "- port_limit      : 2\n"
                 "  version         : 2\n"
                 "  interfaces      : [\"{}\",\"{}\"]\n"
+                "  port_bandwidth_gb : 10\n"
                 "  port_info       :\n"
                 "          - dest_mac        :   [{}]\n"
                 "            src_mac         :   [{}]\n"
                 "  port_info       :\n"
                 "          - dest_mac        :   [{}]\n"
                 "            src_mac         :   [{}]\n"
@@ -152,16 +189,76 @@ class TrafficGenerator(object):
                 logger.error('pkill t-rex failed: {0}'.format(stdout + stderr))
                 raise RuntimeError('pkill t-rex failed')
 
                 logger.error('pkill t-rex failed: {0}'.format(stdout + stderr))
                 raise RuntimeError('pkill t-rex failed')
 
-    def send_traffic_on(self, nodes_info, duration, rate,
+    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]
+
+        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
                         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
         :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
         :type duration: str
         :type rate: str
         :type framesize: str
@@ -170,69 +267,17 @@ class TrafficGenerator(object):
         :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:
-
-            _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')
-
+        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
 
     def no_traffic_loss_occured(self):
         return self._result
 
     def no_traffic_loss_occured(self):
Integration tests