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# Copyright 2018 Cisco Systems, Inc. All rights reserved.
#
# 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.
"""This module creates the missing Trex library classes when they are not installed."""
import sys
# Because trex_stl_lib may not be installed when running unit test
# nfvbench.traffic_client will try to import STLError:
# from trex.stl.api import STLError
# will raise ImportError: No module named trex.stl.api
# trex_gen.py will also try to import a number of trex.stl.api classes
try:
import trex.stl.api
assert trex.stl.api
except ImportError:
from types import ModuleType
# Make up a trex.stl.api.STLError class
class STLDummy(Exception):
"""Dummy class."""
trex_lib_mod = ModuleType('trex')
sys.modules['trex'] = trex_lib_mod
stl_lib_mod = ModuleType('trex.stl')
trex_lib_mod.stl = stl_lib_mod
sys.modules['trex.stl'] = stl_lib_mod
api_mod = ModuleType('trex.stl.api')
stl_lib_mod.api = api_mod
sys.modules['trex.stl.api'] = api_mod
api_mod.STLError = STLDummy
api_mod.STLxyz = STLDummy
api_mod.CTRexVmInsFixHwCs = STLDummy
api_mod.Dot1Q = STLDummy
api_mod.Ether = STLDummy
api_mod.ARP = STLDummy
api_mod.IP = STLDummy
api_mod.STLClient = STLDummy
api_mod.STLFlowLatencyStats = STLDummy
api_mod.STLFlowStats = STLDummy
api_mod.STLPktBuilder = STLDummy
api_mod.STLScVmRaw = STLDummy
api_mod.STLStream = STLDummy
api_mod.STLTXCont = STLDummy
api_mod.STLTXMultiBurst = STLDummy
api_mod.STLVmFixChecksumHw = STLDummy
api_mod.STLVmFixIpv4 = STLDummy
api_mod.STLVmFlowVar = STLDummy
api_mod.STLVmFlowVarRepeatableRandom = STLDummy
api_mod.STLVmTupleGen = STLDummy
api_mod.STLVmWrFlowVar = STLDummy
api_mod.UDP = STLDummy
api_mod.bind_layers = STLDummy
api_mod.FlagsField = STLDummy
api_mod.Packet = STLDummy
api_mod.ThreeBytesField = STLDummy
api_mod.XByteField = STLDummy
common_mod = ModuleType('trex.common')
trex_lib_mod.common = common_mod
sys.modules['trex.common'] = common_mod
services_mod = ModuleType('trex.common.services')
common_mod.services = services_mod
sys.modules['trex.common.services'] = services_mod
arp_mod = ModuleType('trex.common.services.trex_service_arp')
services_mod.trex_stl_service_arp = arp_mod
sys.modules['trex.common.services.trex_service_arp'] = arp_mod
arp_mod.ServiceARP = STLDummy
def no_op():
"""Empty function."""
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