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-rw-r--r--resources/libraries/python/NsimUtil.py82
1 files changed, 82 insertions, 0 deletions
diff --git a/resources/libraries/python/NsimUtil.py b/resources/libraries/python/NsimUtil.py
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+# Copyright (c) 2019 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""VPP Network Simulator Plugin util library."""
+
+from robot.api import logger
+
+from resources.libraries.python.Constants import Constants
+from resources.libraries.python.PapiExecutor import PapiSocketExecutor
+from resources.libraries.python.InterfaceUtil import InterfaceUtil
+
+
+class NsimUtil(object):
+ """VPP NSIM Plugin Keywords."""
+
+ @staticmethod
+ def configure_vpp_nsim(node, vpp_nsim_attr, interface0, interface1=None):
+ """Configure nsim on the specified VPP node.
+
+ :param node: Topology node.
+ :param vpp_nsim_attr: VPP NSIM configuration attributes
+ :param interface0: Interface name.
+ :param interface1: 2nd Interface name for cross-connect feature
+ :type node: dict
+ :type vpp_nsim_attr: dict
+ :type interface0: string or int
+ :type interface1: string or int
+ :raises RuntimeError: if no NSIM features are enabled or
+ vpp papi command fails.
+ """
+ host = node[u"host"]
+ if vpp_nsim_attr[u"output_feature_enable"] == False \
+ and vpp_nsim_attr[u"cross_connect_feature_enable"] == False:
+ raise RuntimeError(f"No NSIM features enabled on host {host}:\n"
+ f"vpp_nsim_attr = {vpp_nsim_attr}")
+ cmd = u"nsim_configure"
+ args = dict(
+ delay_in_usec=vpp_nsim_attr[u"delay_in_usec"],
+ average_packet_size=vpp_nsim_attr[u"average_packet_size"],
+ bandwidth_in_bits_per_second=vpp_nsim_attr[
+ u"bandwidth_in_bits_per_second"
+ ],
+ packets_per_drop=vpp_nsim_attr[u"packets_per_drop"],
+ )
+ err_msg = f"Failed to configure NSIM on host {host}"
+ with PapiSocketExecutor(node) as papi_exec:
+ papi_exec.add(cmd, **args).get_reply(err_msg)
+
+ if vpp_nsim_attr[u"output_feature_enable"] == True:
+ cmd = u"nsim_output_feature_enable_disable"
+ args = dict(
+ enable_disable=vpp_nsim_attr[u"output_feature_enable"],
+ sw_if_index=InterfaceUtil.get_interface_index(node, interface0),
+ )
+ err_msg = f"Failed to enable NSIM output feature on " \
+ f"host {host} interface {interface0}"
+ with PapiSocketExecutor(node) as papi_exec:
+ papi_exec.add(cmd, **args).get_reply(err_msg)
+
+ elif vpp_nsim_attr[u"cross_connect_feature_enable"] == True:
+ cmd = u"nsim_cross_connect_feature_enable_disable"
+ args = dict(
+ enable_disable=vpp_nsim_attr[u"cross_connect_feature_enable"],
+ sw_if_index0=InterfaceUtil.get_interface_index(node,
+ interface0),
+ sw_if_index1=InterfaceUtil.get_interface_index(node,
+ interface1),
+ )
+ err_msg = f"Failed to enable NSIM output feature on " \
+ f"host {host} interface {interface0}"
+ with PapiSocketExecutor(node) as papi_exec:
+ papi_exec.add(cmd, **args).get_reply(err_msg)