NFVBENCH-153 Add support for python3

[nfvbench.git] / nfvbench / traffic_gen / traffic_base.py

diff --git a/nfvbench/traffic_gen/traffic_base.py b/nfvbench/traffic_gen/traffic_base.py
index 064b2a2..3bff7da 100644 (file)
--- a/nfvbench/traffic_gen/traffic_base.py
+++ b/nfvbench/traffic_gen/traffic_base.py
@@ -13,77 +13,116 @@
 #    under the License.
 
 import abc
+import sys
 
-class TrafficGeneratorException(Exception):
-    pass
+from nfvbench.log import LOG
+from . import traffic_utils
 
 
-class AbstractTrafficGenerator(object):
+class Latency(object):
+    """A class to hold latency data."""
 
-    # src_mac (6) + dst_mac (6) + mac_type (2) + frame_check (4) = 18
-    l2_header_size = 18
+    def __init__(self, latency_list=None):
+        """Create a latency instance.
 
-    imix_l2_sizes = [64, 594, 1518]
-    imix_l3_sizes = [size - l2_header_size for size in imix_l2_sizes]
-    imix_ratios = [7, 4, 1]
-    imix_avg_l2_size = sum(map(
-        lambda imix: 1.0 * imix[0] * imix[1],
-        zip(imix_l2_sizes, imix_ratios))) / sum(imix_ratios)
+        latency_list: aggregate all latency values from list if not None
+        """
+        self.min_usec = sys.maxsize
+        self.max_usec = 0
+        self.avg_usec = 0
+        self.hdrh = None
+        if latency_list:
+            for lat in latency_list:
+                if lat.available():
+                    self.min_usec = min(self.min_usec, lat.min_usec)
+                    self.max_usec = max(self.max_usec, lat.max_usec)
+                    self.avg_usec += lat.avg_usec
+            # round to nearest usec
+            self.avg_usec = int(round(float(self.avg_usec) / len(latency_list)))
 
-    def __init__(self, config):
-        self.config = config
+    def available(self):
+        """Return True if latency information is available."""
+        return self.min_usec != sys.maxsize
 
-    @abc.abstractmethod
-    def get_version():
-        # Must be implemented by sub classes
-        return None
+
+class TrafficGeneratorException(Exception):
+    """Exception for traffic generator."""
+
+class AbstractTrafficGenerator(object):
+
+    def __init__(self, traffic_client):
+        self.traffic_client = traffic_client
+        self.generator_config = traffic_client.generator_config
+        self.config = traffic_client.config
 
     @abc.abstractmethod
-    def init():
+    def get_version(self):
         # Must be implemented by sub classes
         return None
 
     @abc.abstractmethod
-    def connect():
+    def connect(self):
         # Must be implemented by sub classes
         return None
 
     @abc.abstractmethod
-    def config_interface():
+    def create_traffic(self, l2frame_size, rates, bidirectional, latency=True, e2e=False):
         # Must be implemented by sub classes
         return None
 
+    def modify_rate(self, rate, reverse):
+        """Change the rate per port.
+
+        rate: new rate in % (0 to 100)
+        reverse: 0 for port 0, 1 for port 1
+        """
+        port_index = int(reverse)
+        port = self.port_handle[port_index]
+        self.rates[port_index] = traffic_utils.to_rate_str(rate)
+        LOG.info('Modified traffic stream for port %s, new rate=%s.', port, self.rates[port_index])
+
     @abc.abstractmethod
-    def create_traffic():
+    def get_stats(self):
         # Must be implemented by sub classes
         return None
 
     @abc.abstractmethod
-    def modify_traffic():
+    def start_traffic(self):
         # Must be implemented by sub classes
         return None
 
     @abc.abstractmethod
-    def get_stats():
+    def stop_traffic(self):
         # Must be implemented by sub classes
         return None
 
     @abc.abstractmethod
-    def clear_traffic():
-        # Must be implemented by sub classes
+    def cleanup(self):
+        """Cleanup the traffic generator."""
         return None
 
+    def clear_streamblock(self):
+        """Clear all streams from the traffic generator."""
+
     @abc.abstractmethod
-    def start_traffic():
-        # Must be implemented by sub classes
-        return None
+    def resolve_arp(self):
+        """Resolve all configured remote IP addresses.
+
+        return: None if ARP failed to resolve for all IP addresses
+                else a dict of list of dest macs indexed by port#
+                the dest macs in the list are indexed by the chain id
+        """
 
     @abc.abstractmethod
-    def stop_traffic():
-        # Must be implemented by sub classes
-        return None
+    def get_macs(self):
+        """Return the local port MAC addresses.
+
+        return: a list of MAC addresses indexed by the port#
+        """
 
     @abc.abstractmethod
-    def cleanup():
-        # Must be implemented by sub classes
-        return None
+    def get_port_speed_gbps(self):
+        """Return the local port speeds.
+
+        return: a list of speed in Gbps indexed by the port#
+        """