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87e10c240e
Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com> Change-Id: I2d6a7f9ed0ff8ad6977bcfe1b78ed620bb0e848d
179 lines
8.0 KiB
Python
179 lines
8.0 KiB
Python
#!/usr/bin/env python3
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# Module name : test_automaticmodefeature.py
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# Version :
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# License : BSD 3-Clause Licence
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# Copyright (c) 2018, Telecom Infra Project
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"""
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@author: esther.lerouzic
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checks that empty info on mode, power, nbchannel in service file are supported
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uses combination of [mode, pow, nb channel] filled or empty defined in meshTopologyToy_services.json
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leading to feasible path or not, and check the propagate and propagate_and_optimize_mode
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return the expected based on a reference toy example
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"""
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from pathlib import Path
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from logging import INFO
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from numpy.testing import assert_allclose
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import pytest
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from gnpy.core.network import build_network
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from gnpy.core.utils import automatic_nch, lin2db, watt2dbm
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from gnpy.core.elements import Roadm
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from gnpy.topology.request import compute_path_dsjctn, propagate, propagate_and_optimize_mode, correct_json_route_list
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from gnpy.tools.json_io import load_network, load_equipment, requests_from_json, load_requests, load_json, \
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_equipment_from_json
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network_file_name = Path(__file__).parent.parent / 'tests/data/testTopology_expected.json'
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service_file_name = Path(__file__).parent.parent / 'tests/data/testTopology_testservices.json'
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result_file_name = Path(__file__).parent.parent / 'tests/data/testTopology_testresults.json'
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eqpt_library_name = Path(__file__).parent.parent / 'tests/data/eqpt_config.json'
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@pytest.mark.parametrize("net", [network_file_name])
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@pytest.mark.parametrize("eqpt", [eqpt_library_name])
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@pytest.mark.parametrize("serv", [service_file_name])
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@pytest.mark.parametrize("expected_mode", [['16QAM', 'PS_SP64_1', 'PS_SP64_1', 'PS_SP64_1', 'mode 2 - fake', 'mode 2',
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'PS_SP64_1', 'mode 3', 'PS_SP64_1', 'PS_SP64_1', '16QAM', 'mode 1',
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'PS_SP64_1', 'PS_SP64_1', 'mode 1', 'mode 2', 'mode 1', 'mode 2', 'nok']])
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def test_automaticmodefeature(net, eqpt, serv, expected_mode):
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equipment = load_equipment(eqpt)
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network = load_network(net, equipment)
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data = load_requests(serv, eqpt, bidir=False, network=network, network_filename=net)
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# Build the network once using the default power defined in SI in eqpt config
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# power density : db2linp(ower_dbm": 0)/power_dbm": 0 * nb channels as defined by
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# spacing, f_min and f_max
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p_db = equipment['SI']['default'].power_dbm
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p_total_db = p_db + lin2db(automatic_nch(equipment['SI']['default'].f_min,
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equipment['SI']['default'].f_max, equipment['SI']['default'].spacing))
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build_network(network, equipment, p_db, p_total_db)
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rqs = requests_from_json(data, equipment)
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rqs = correct_json_route_list(network, rqs)
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dsjn = []
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pths = compute_path_dsjctn(network, equipment, rqs, dsjn)
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path_res_list = []
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for i, pathreq in enumerate(rqs):
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# use the power specified in requests but might be different from the one specified for design
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# the power is an optional parameter for requests definition
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# if optional, use the one defines in eqt_config.json
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p_db = lin2db(pathreq.power * 1e3)
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p_total_db = p_db + lin2db(pathreq.nb_channel)
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print(f'request {pathreq.request_id}')
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print(f'Computing path from {pathreq.source} to {pathreq.destination}')
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# adding first node to be clearer on the output
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print(f'with path constraint: {[pathreq.source]+pathreq.nodes_list}')
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total_path = pths[i]
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print(f'Computed path (roadms):{[e.uid for e in total_path if isinstance(e, Roadm)]}\n')
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# for debug
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# print(f'{pathreq.baud_rate} {pathreq.power} {pathreq.spacing} {pathreq.nb_channel}')
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if pathreq.baud_rate is not None:
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print(pathreq.format)
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path_res_list.append(pathreq.format)
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total_path = propagate(total_path, pathreq, equipment)
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else:
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total_path, mode = propagate_and_optimize_mode(total_path, pathreq, equipment)
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# if no baudrate satisfies spacing, no mode is returned and an empty path is returned
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# a warning is shown in the propagate_and_optimize_mode
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if mode is not None:
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print(mode['format'])
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path_res_list.append(mode['format'])
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else:
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print('nok')
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path_res_list.append('nok')
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print(path_res_list)
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assert path_res_list == expected_mode
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def test_propagate_and_optimize_mode(caplog):
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"""Checks that the automatic mode returns the last explored mode
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Mode are explored with descending baud_rate order and descending bitrate, so the last explored mode must be mode 1
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Mode 1 GSNR is OK but pdl penalty are not OK due to high ROADM PDL. so the last explored mode is not OK
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Then the propagate_and_optimize_mode must return mode 1 and the blocking reason must be 'NO_FEASIBLE_MODE'
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"""
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caplog.set_level(INFO)
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json_data = load_json(eqpt_library_name)
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voyager = next(e for e in json_data['Transceiver'] if e['type_variety'] == 'Voyager')
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# expected path min GSNR is 22.11
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# Change Voyager modes so that:
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# - highest baud rate has min OSNR > path GSNR
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# - lower baudrate with highest bitrate has min OSNR > path GSNR
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# - lower baudrate with lower bitrate has has min OSNR < path GSNR but PDL penalty is infinite
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voyager['mode'] = [
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{
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"format": "mode 1",
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"baud_rate": 32e9,
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"OSNR": 12,
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"bit_rate": 100e9,
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"roll_off": 0.15,
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"tx_osnr": 45,
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"min_spacing": 50e9,
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"penalties": [
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{
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"chromatic_dispersion": 4e3,
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"penalty_value": 0
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}, {
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"chromatic_dispersion": 40e3,
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"penalty_value": 0
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}, {
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"pdl": 0.5,
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"penalty_value": 1
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}, {
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"pmd": 30,
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"penalty_value": 0
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}],
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"cost": 1
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},
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{
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"format": "mode 3",
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"baud_rate": 32e9,
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"OSNR": 30,
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"bit_rate": 300e9,
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"roll_off": 0.15,
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"tx_osnr": 45,
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"min_spacing": 50e9,
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"cost": 1
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},
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{
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"format": "mode 2",
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"baud_rate": 66e9,
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"OSNR": 25,
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"bit_rate": 400e9,
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"roll_off": 0.15,
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"tx_osnr": 45,
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"min_spacing": 75e9,
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"cost": 1
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}]
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# change default ROADM PDL so that crossing 2 ROADMs leasd to inifinte penalty for mode 1
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eqpt_roadm = next(r for r in json_data['Roadm'] if 'type_variety' not in r)
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eqpt_roadm['pdl'] = 0.5
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equipment = _equipment_from_json(json_data, eqpt_library_name)
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network = load_network(network_file_name, equipment)
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data = load_requests(filename=Path(__file__).parent.parent / 'tests/data/testTopology_services_expected.json',
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eqpt=eqpt_library_name, bidir=False, network=network, network_filename=network_file_name)
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# remove the mode from request, change it to larger spacing
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data['path-request'][1]['path-constraints']['te-bandwidth']['trx_mode'] = None
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data['path-request'][1]['path-constraints']['te-bandwidth']['spacing'] = 75e9
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assert_allclose(watt2dbm(data['path-request'][1]['path-constraints']['te-bandwidth']['output-power']), 1, rtol=1e-9)
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# use the request power for design, or there will be inconsistencies with the gain
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build_network(network, equipment, 1, 21)
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rqs = requests_from_json(data, equipment)
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rqs = correct_json_route_list(network, rqs)
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[path] = compute_path_dsjctn(network, equipment, [rqs[1]], [])
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total_path, mode = propagate_and_optimize_mode(path, rqs[1], equipment)
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assert round(min(path[-1].snr_01nm), 2) == 22.22
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assert mode['format'] == 'mode 1'
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assert rqs[1].blocking_reason == 'NO_FEASIBLE_MODE'
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expected_mesg = '\tWarning! Request 1: no mode satisfies path SNR requirement.'
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# Last log records mustcontain the message about the las explored mode
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assert expected_mesg in caplog.records[-1].message
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