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[csit.git] / resources / libraries / python / TrafficGenerator.py

diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index a808338..b7c8d6e 100644 (file)
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -33,7 +33,7 @@ class TGDropRateSearchImpl(DropRateSearch):
         super(TGDropRateSearchImpl, self).__init__()
 
     def measure_loss(self, rate, frame_size, loss_acceptance,
-                     loss_acceptance_type, traffic_type):
+                     loss_acceptance_type, traffic_type, skip_warmup=False):
         """Runs the traffic and evaluate the measured results.
 
         :param rate: Offered traffic load.
@@ -41,11 +41,13 @@ class TGDropRateSearchImpl(DropRateSearch):
         :param loss_acceptance: Permitted drop ratio or frames count.
         :param loss_acceptance_type: Type of permitted loss.
         :param traffic_type: Traffic profile ([2,3]-node-L[2,3], ...).
+        :param skip_warmup: Start TRex without warmup traffic if true.
         :type rate: int
         :type frame_size: str
         :type loss_acceptance: float
         :type loss_acceptance_type: LossAcceptanceType
         :type traffic_type: str
+        :type skip_warmup: bool
         :returns: Drop threshold exceeded? (True/False)
         :rtype: bool
         :raises: NotImplementedError if TG is not supported.
@@ -60,9 +62,15 @@ class TGDropRateSearchImpl(DropRateSearch):
             raise RuntimeError('TG subtype not defined')
         elif tg_instance.node['subtype'] == NodeSubTypeTG.TREX:
             unit_rate = str(rate) + self.get_rate_type_str()
-            tg_instance.trex_stl_start_remote_exec(self.get_duration(),
-                                                   unit_rate, frame_size,
-                                                   traffic_type)
+            if skip_warmup:
+                tg_instance.trex_stl_start_remote_exec(self.get_duration(),
+                                                       unit_rate, frame_size,
+                                                       traffic_type,
+                                                       warmup_time=0)
+            else:
+                tg_instance.trex_stl_start_remote_exec(self.get_duration(),
+                                                       unit_rate, frame_size,
+                                                       traffic_type)
             loss = tg_instance.get_loss()
             sent = tg_instance.get_sent()
             if self.loss_acceptance_type_is_percentage():
@@ -185,8 +193,9 @@ class TrafficGenerator(object):
             ssh.connect(tg_node)
 
             (ret, _, _) = ssh.exec_command(
-                "sudo -E sh -c '{}/resources/tools/trex/"
-                "trex_installer.sh'".format(Constants.REMOTE_FW_DIR),
+                "sudo -E sh -c '{0}/resources/tools/trex/"
+                "trex_installer.sh {1}'".format(Constants.REMOTE_FW_DIR,
+                                                Constants.TREX_INSTALL_VERSION),
                 timeout=1800)
             if int(ret) != 0:
                 raise RuntimeError('TRex installation failed.')
@@ -306,6 +315,24 @@ class TrafficGenerator(object):
             # critical error occurred
             raise RuntimeError('t-rex-64 startup failed')
 
+    @staticmethod
+    def is_trex_running(node):
+        """Check if TRex is running using pidof.
+
+        :param node: Traffic generator node.
+        :type node: dict
+        :returns: True if TRex is running otherwise False.
+        :rtype: bool
+        :raises: RuntimeError if node type is not a TG.
+        """
+        if node['type'] != NodeType.TG:
+            raise RuntimeError('Node type is not a TG')
+
+        ssh = SSH()
+        ssh.connect(node)
+        ret, _, _ = ssh.exec_command_sudo("pidof t-rex")
+        return bool(int(ret) == 0)
+
     @staticmethod
     def teardown_traffic_generator(node):
         """TG teardown.