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https://github.com/Telecominfraproject/oopt-gnpy.git
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examples: move transmission_main_example into gnpy.tools
This converts our first free-standing example entry point into a function. It will become very handy when we start distributing these entry points via setuptools. Change-Id: Icd2e4658337f93cd0b0301978e2dc640de0cc72b
This commit is contained in:
Jan Kundrát
@@ -10,238 +10,8 @@ Main example for transmission simulation.
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Reads from network JSON (by default, `edfa_example_network.json`)
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'''
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from argparse import ArgumentParser
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from sys import exit
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from pathlib import Path
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from logging import getLogger, basicConfig, INFO, ERROR, DEBUG
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from numpy import linspace, mean
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from gnpy.core.equipment import trx_mode_params
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from gnpy.core.network import build_network
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from gnpy.core.elements import Transceiver, Fiber, RamanFiber
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from gnpy.core.utils import db2lin, lin2db, write_csv
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import gnpy.core.ansi_escapes as ansi_escapes
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from gnpy.topology.request import PathRequest, compute_constrained_path, propagate2
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import gnpy.tools.cli_examples as cli_examples
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from gnpy.tools.json_io import save_network
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from gnpy.tools.plots import plot_baseline, plot_results
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logger = getLogger(__name__)
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def main(network, equipment, source, destination, req=None):
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result_dicts = {}
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network_data = [{
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'network_name': str(args.filename),
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'source': source.uid,
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'destination': destination.uid
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}]
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result_dicts.update({'network': network_data})
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design_data = [{
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'power_mode': equipment['Span']['default'].power_mode,
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'span_power_range': equipment['Span']['default'].delta_power_range_db,
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'design_pch': equipment['SI']['default'].power_dbm,
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'baud_rate': equipment['SI']['default'].baud_rate
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}]
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result_dicts.update({'design': design_data})
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simulation_data = []
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result_dicts.update({'simulation results': simulation_data})
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power_mode = equipment['Span']['default'].power_mode
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print('\n'.join([f'Power mode is set to {power_mode}',
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f'=> it can be modified in eqpt_config.json - Span']))
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pref_ch_db = lin2db(req.power * 1e3) # reference channel power / span (SL=20dB)
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pref_total_db = pref_ch_db + lin2db(req.nb_channel) # reference total power / span (SL=20dB)
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build_network(network, equipment, pref_ch_db, pref_total_db)
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path = compute_constrained_path(network, req)
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spans = [s.params.length for s in path if isinstance(s, RamanFiber) or isinstance(s, Fiber)]
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print(f'\nThere are {len(spans)} fiber spans over {sum(spans)/1000:.0f} km between {source.uid} '
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f'and {destination.uid}')
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print(f'\nNow propagating between {source.uid} and {destination.uid}:')
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try:
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p_start, p_stop, p_step = equipment['SI']['default'].power_range_db
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p_num = abs(int(round((p_stop - p_start) / p_step))) + 1 if p_step != 0 else 1
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power_range = list(linspace(p_start, p_stop, p_num))
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except TypeError:
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print('invalid power range definition in eqpt_config, should be power_range_db: [lower, upper, step]')
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power_range = [0]
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if not power_mode:
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# power cannot be changed in gain mode
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power_range = [0]
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for dp_db in power_range:
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req.power = db2lin(pref_ch_db + dp_db) * 1e-3
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if power_mode:
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print(f'\nPropagating with input power = {ansi_escapes.cyan}{lin2db(req.power*1e3):.2f} dBm{ansi_escapes.reset}:')
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else:
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print(f'\nPropagating in {ansi_escapes.cyan}gain mode{ansi_escapes.reset}: power cannot be set manually')
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infos = propagate2(path, req, equipment)
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if len(power_range) == 1:
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for elem in path:
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print(elem)
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if power_mode:
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print(f'\nTransmission result for input power = {lin2db(req.power*1e3):.2f} dBm:')
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else:
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print(f'\nTransmission results:')
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print(f' Final SNR total (0.1 nm): {ansi_escapes.cyan}{mean(destination.snr_01nm):.02f} dB{ansi_escapes.reset}')
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else:
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print(path[-1])
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# print(f'\n !!!!!!!!!!!!!!!!! TEST POINT !!!!!!!!!!!!!!!!!!!!!')
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# print(f'carriers ase output of {path[1]} =\n {list(path[1].carriers("out", "nli"))}')
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# => use "in" or "out" parameter
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# => use "nli" or "ase" or "signal" or "total" parameter
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if power_mode:
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simulation_data.append({
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'Pch_dBm': pref_ch_db + dp_db,
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'OSNR_ASE_0.1nm': round(mean(destination.osnr_ase_01nm), 2),
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'OSNR_ASE_signal_bw': round(mean(destination.osnr_ase), 2),
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'SNR_nli_signal_bw': round(mean(destination.osnr_nli), 2),
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'SNR_total_signal_bw': round(mean(destination.snr), 2)
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})
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else:
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simulation_data.append({
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'gain_mode': 'power canot be set',
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'OSNR_ASE_0.1nm': round(mean(destination.osnr_ase_01nm), 2),
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'OSNR_ASE_signal_bw': round(mean(destination.osnr_ase), 2),
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'SNR_nli_signal_bw': round(mean(destination.osnr_nli), 2),
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'SNR_total_signal_bw': round(mean(destination.snr), 2)
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})
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write_csv(result_dicts, 'simulation_result.csv')
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return path, infos
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parser = ArgumentParser()
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parser.add_argument('-e', '--equipment', type=Path,
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default=Path(__file__).parent / 'eqpt_config.json')
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parser.add_argument('--sim-params', type=Path,
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default=None, help='Path to the JSON containing simulation parameters (required for Raman)')
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parser.add_argument('--show-channels', action='store_true', help='Show final per-channel OSNR summary')
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parser.add_argument('-pl', '--plot', action='store_true')
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parser.add_argument('-v', '--verbose', action='count', default=0, help='increases verbosity for each occurence')
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parser.add_argument('-l', '--list-nodes', action='store_true', help='list all transceiver nodes')
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parser.add_argument('-po', '--power', default=0, help='channel ref power in dBm')
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parser.add_argument('-names', '--names-matching', action='store_true',
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help='display network names that are closed matches')
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parser.add_argument('filename', nargs='?', type=Path,
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default=Path(__file__).parent / 'edfa_example_network.json')
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parser.add_argument('source', nargs='?', help='source node')
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parser.add_argument('destination', nargs='?', help='destination node')
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from gnpy.tools.cli_examples import transmission_main_example
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if __name__ == '__main__':
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args = parser.parse_args()
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basicConfig(level={0: ERROR, 1: INFO, 2: DEBUG}.get(args.verbose, DEBUG))
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(equipment, network) = cli_examples.load_common_data(args.equipment, args.filename, args.sim_params,
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fuzzy_name_matching=args.names_matching)
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if args.plot:
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plot_baseline(network)
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transceivers = {n.uid: n for n in network.nodes() if isinstance(n, Transceiver)}
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if not transceivers:
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exit('Network has no transceivers!')
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if len(transceivers) < 2:
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exit('Network has only one transceiver!')
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if args.list_nodes:
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for uid in transceivers:
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print(uid)
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exit()
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# First try to find exact match if source/destination provided
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if args.source:
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source = transceivers.pop(args.source, None)
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valid_source = True if source else False
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else:
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source = None
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logger.info('No source node specified: picking random transceiver')
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if args.destination:
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destination = transceivers.pop(args.destination, None)
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valid_destination = True if destination else False
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else:
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destination = None
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logger.info('No destination node specified: picking random transceiver')
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# If no exact match try to find partial match
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if args.source and not source:
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# TODO code a more advanced regex to find nodes match
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source = next((transceivers.pop(uid) for uid in transceivers
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if args.source.lower() in uid.lower()), None)
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if args.destination and not destination:
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# TODO code a more advanced regex to find nodes match
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destination = next((transceivers.pop(uid) for uid in transceivers
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if args.destination.lower() in uid.lower()), None)
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# If no partial match or no source/destination provided pick random
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if not source:
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source = list(transceivers.values())[0]
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del transceivers[source.uid]
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if not destination:
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destination = list(transceivers.values())[0]
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logger.info(f'source = {args.source!r}')
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logger.info(f'destination = {args.destination!r}')
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params = {}
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params['request_id'] = 0
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params['trx_type'] = ''
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params['trx_mode'] = ''
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params['source'] = source.uid
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params['destination'] = destination.uid
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params['bidir'] = False
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params['nodes_list'] = [destination.uid]
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params['loose_list'] = ['strict']
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params['format'] = ''
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params['path_bandwidth'] = 0
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trx_params = trx_mode_params(equipment)
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if args.power:
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trx_params['power'] = db2lin(float(args.power)) * 1e-3
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params.update(trx_params)
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req = PathRequest(**params)
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path, infos = main(network, equipment, source, destination, req)
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save_network(args.filename, network)
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if args.show_channels:
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print('\nThe total SNR per channel at the end of the line is:')
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print(
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'{:>5}{:>26}{:>26}{:>28}{:>28}{:>28}' .format(
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'Ch. #',
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'Channel frequency (THz)',
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'Channel power (dBm)',
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'OSNR ASE (signal bw, dB)',
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'SNR NLI (signal bw, dB)',
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'SNR total (signal bw, dB)'))
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for final_carrier, ch_osnr, ch_snr_nl, ch_snr in zip(
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infos[path[-1]][1].carriers, path[-1].osnr_ase, path[-1].osnr_nli, path[-1].snr):
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ch_freq = final_carrier.frequency * 1e-12
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ch_power = lin2db(final_carrier.power.signal * 1e3)
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print(
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'{:5}{:26.2f}{:26.2f}{:28.2f}{:28.2f}{:28.2f}' .format(
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final_carrier.channel_number, round(
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ch_freq, 2), round(
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ch_power, 2), round(
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ch_osnr, 2), round(
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ch_snr_nl, 2), round(
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ch_snr, 2)))
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if not args.source:
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print(f'\n(No source node specified: picked {source.uid})')
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elif not valid_source:
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print(f'\n(Invalid source node {args.source!r} replaced with {source.uid})')
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if not args.destination:
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print(f'\n(No destination node specified: picked {destination.uid})')
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elif not valid_destination:
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print(f'\n(Invalid destination node {args.destination!r} replaced with {destination.uid})')
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if args.plot:
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plot_results(network, path, source, destination, infos)
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transmission_main_example()
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@@ -8,12 +8,26 @@ gnpy.tools.cli_examples
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Common code for CLI examples
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'''
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from argparse import ArgumentParser
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import os.path
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from sys import exit
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from numpy import linspace, mean
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import logging
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from pathlib import Path
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import gnpy.core.ansi_escapes as ansi_escapes
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from gnpy.core.elements import RamanFiber
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from gnpy.core.elements import Transceiver, Fiber, RamanFiber
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from gnpy.core.equipment import trx_mode_params
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import gnpy.core.exceptions as exceptions
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from gnpy.core.network import build_network
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from gnpy.core.parameters import SimParams
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from gnpy.core.science_utils import Simulation
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from gnpy.tools.json_io import load_equipment, load_network, load_json
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from gnpy.core.utils import db2lin, lin2db, write_csv
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from gnpy.tools.json_io import load_equipment, load_network, load_json, save_network
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from gnpy.topology.request import PathRequest, compute_constrained_path, propagate2
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from gnpy.tools.plots import plot_baseline, plot_results
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_logger = logging.getLogger(__name__)
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_examples_dir = Path(__file__).parent.parent.parent / 'examples'
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def load_common_data(equipment_filename, topology_filename, simulation_filename=None, fuzzy_name_matching=False):
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@@ -46,3 +60,220 @@ def load_common_data(equipment_filename, topology_filename, simulation_filename=
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exit(1)
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return (equipment, network)
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def _setup_logging(args):
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logging.basicConfig(level={2: logging.DEBUG, 1: logging.INFO, 0: logging.CRITICAL}.get(args.verbose, logging.DEBUG))
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def transmission_main_example():
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parser = ArgumentParser()
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parser.add_argument('-e', '--equipment', type=Path,
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default=_examples_dir / 'eqpt_config.json')
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parser.add_argument('--sim-params', type=Path,
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default=None, help='Path to the JSON containing simulation parameters (required for Raman)')
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parser.add_argument('--show-channels', action='store_true', help='Show final per-channel OSNR summary')
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parser.add_argument('-pl', '--plot', action='store_true')
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parser.add_argument('-v', '--verbose', action='count', default=0, help='increases verbosity for each occurence')
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parser.add_argument('-l', '--list-nodes', action='store_true', help='list all transceiver nodes')
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parser.add_argument('-po', '--power', default=0, help='channel ref power in dBm')
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parser.add_argument('-names', '--names-matching', action='store_true',
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help='display network names that are closed matches')
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parser.add_argument('filename', nargs='?', type=Path,
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default=_examples_dir / 'edfa_example_network.json')
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parser.add_argument('source', nargs='?', help='source node')
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parser.add_argument('destination', nargs='?', help='destination node')
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args = parser.parse_args()
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_setup_logging(args)
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(equipment, network) = load_common_data(args.equipment, args.filename, args.sim_params, fuzzy_name_matching=args.names_matching)
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if args.plot:
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plot_baseline(network)
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transceivers = {n.uid: n for n in network.nodes() if isinstance(n, Transceiver)}
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if not transceivers:
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exit('Network has no transceivers!')
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if len(transceivers) < 2:
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exit('Network has only one transceiver!')
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if args.list_nodes:
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for uid in transceivers:
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print(uid)
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exit()
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# First try to find exact match if source/destination provided
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if args.source:
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source = transceivers.pop(args.source, None)
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valid_source = True if source else False
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else:
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source = None
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_logger.info('No source node specified: picking random transceiver')
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if args.destination:
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destination = transceivers.pop(args.destination, None)
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valid_destination = True if destination else False
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else:
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destination = None
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_logger.info('No destination node specified: picking random transceiver')
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# If no exact match try to find partial match
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if args.source and not source:
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# TODO code a more advanced regex to find nodes match
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source = next((transceivers.pop(uid) for uid in transceivers
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if args.source.lower() in uid.lower()), None)
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if args.destination and not destination:
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# TODO code a more advanced regex to find nodes match
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destination = next((transceivers.pop(uid) for uid in transceivers
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if args.destination.lower() in uid.lower()), None)
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# If no partial match or no source/destination provided pick random
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if not source:
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source = list(transceivers.values())[0]
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del transceivers[source.uid]
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if not destination:
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destination = list(transceivers.values())[0]
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_logger.info(f'source = {args.source!r}')
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_logger.info(f'destination = {args.destination!r}')
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params = {}
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params['request_id'] = 0
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params['trx_type'] = ''
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params['trx_mode'] = ''
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params['source'] = source.uid
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params['destination'] = destination.uid
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params['bidir'] = False
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params['nodes_list'] = [destination.uid]
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params['loose_list'] = ['strict']
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params['format'] = ''
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params['path_bandwidth'] = 0
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trx_params = trx_mode_params(equipment)
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if args.power:
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trx_params['power'] = db2lin(float(args.power)) * 1e-3
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params.update(trx_params)
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req = PathRequest(**params)
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result_dicts = {}
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network_data = [{
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'network_name': str(args.filename),
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'source': source.uid,
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'destination': destination.uid
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}]
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result_dicts.update({'network': network_data})
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design_data = [{
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'power_mode': equipment['Span']['default'].power_mode,
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'span_power_range': equipment['Span']['default'].delta_power_range_db,
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'design_pch': equipment['SI']['default'].power_dbm,
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'baud_rate': equipment['SI']['default'].baud_rate
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}]
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result_dicts.update({'design': design_data})
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simulation_data = []
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result_dicts.update({'simulation results': simulation_data})
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power_mode = equipment['Span']['default'].power_mode
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print('\n'.join([f'Power mode is set to {power_mode}',
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f'=> it can be modified in eqpt_config.json - Span']))
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pref_ch_db = lin2db(req.power * 1e3) # reference channel power / span (SL=20dB)
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pref_total_db = pref_ch_db + lin2db(req.nb_channel) # reference total power / span (SL=20dB)
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build_network(network, equipment, pref_ch_db, pref_total_db)
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path = compute_constrained_path(network, req)
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spans = [s.params.length for s in path if isinstance(s, RamanFiber) or isinstance(s, Fiber)]
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print(f'\nThere are {len(spans)} fiber spans over {sum(spans)/1000:.0f} km between {source.uid} '
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f'and {destination.uid}')
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print(f'\nNow propagating between {source.uid} and {destination.uid}:')
|
||||
|
||||
try:
|
||||
p_start, p_stop, p_step = equipment['SI']['default'].power_range_db
|
||||
p_num = abs(int(round((p_stop - p_start) / p_step))) + 1 if p_step != 0 else 1
|
||||
power_range = list(linspace(p_start, p_stop, p_num))
|
||||
except TypeError:
|
||||
print('invalid power range definition in eqpt_config, should be power_range_db: [lower, upper, step]')
|
||||
power_range = [0]
|
||||
|
||||
if not power_mode:
|
||||
# power cannot be changed in gain mode
|
||||
power_range = [0]
|
||||
for dp_db in power_range:
|
||||
req.power = db2lin(pref_ch_db + dp_db) * 1e-3
|
||||
if power_mode:
|
||||
print(f'\nPropagating with input power = {ansi_escapes.cyan}{lin2db(req.power*1e3):.2f} dBm{ansi_escapes.reset}:')
|
||||
else:
|
||||
print(f'\nPropagating in {ansi_escapes.cyan}gain mode{ansi_escapes.reset}: power cannot be set manually')
|
||||
infos = propagate2(path, req, equipment)
|
||||
if len(power_range) == 1:
|
||||
for elem in path:
|
||||
print(elem)
|
||||
if power_mode:
|
||||
print(f'\nTransmission result for input power = {lin2db(req.power*1e3):.2f} dBm:')
|
||||
else:
|
||||
print(f'\nTransmission results:')
|
||||
print(f' Final SNR total (0.1 nm): {ansi_escapes.cyan}{mean(destination.snr_01nm):.02f} dB{ansi_escapes.reset}')
|
||||
else:
|
||||
print(path[-1])
|
||||
|
||||
# print(f'\n !!!!!!!!!!!!!!!!! TEST POINT !!!!!!!!!!!!!!!!!!!!!')
|
||||
# print(f'carriers ase output of {path[1]} =\n {list(path[1].carriers("out", "nli"))}')
|
||||
# => use "in" or "out" parameter
|
||||
# => use "nli" or "ase" or "signal" or "total" parameter
|
||||
if power_mode:
|
||||
simulation_data.append({
|
||||
'Pch_dBm': pref_ch_db + dp_db,
|
||||
'OSNR_ASE_0.1nm': round(mean(destination.osnr_ase_01nm), 2),
|
||||
'OSNR_ASE_signal_bw': round(mean(destination.osnr_ase), 2),
|
||||
'SNR_nli_signal_bw': round(mean(destination.osnr_nli), 2),
|
||||
'SNR_total_signal_bw': round(mean(destination.snr), 2)
|
||||
})
|
||||
else:
|
||||
simulation_data.append({
|
||||
'gain_mode': 'power canot be set',
|
||||
'OSNR_ASE_0.1nm': round(mean(destination.osnr_ase_01nm), 2),
|
||||
'OSNR_ASE_signal_bw': round(mean(destination.osnr_ase), 2),
|
||||
'SNR_nli_signal_bw': round(mean(destination.osnr_nli), 2),
|
||||
'SNR_total_signal_bw': round(mean(destination.snr), 2)
|
||||
})
|
||||
write_csv(result_dicts, 'simulation_result.csv')
|
||||
|
||||
save_network(args.filename, network)
|
||||
|
||||
if args.show_channels:
|
||||
print('\nThe total SNR per channel at the end of the line is:')
|
||||
print(
|
||||
'{:>5}{:>26}{:>26}{:>28}{:>28}{:>28}' .format(
|
||||
'Ch. #',
|
||||
'Channel frequency (THz)',
|
||||
'Channel power (dBm)',
|
||||
'OSNR ASE (signal bw, dB)',
|
||||
'SNR NLI (signal bw, dB)',
|
||||
'SNR total (signal bw, dB)'))
|
||||
for final_carrier, ch_osnr, ch_snr_nl, ch_snr in zip(
|
||||
infos[path[-1]][1].carriers, path[-1].osnr_ase, path[-1].osnr_nli, path[-1].snr):
|
||||
ch_freq = final_carrier.frequency * 1e-12
|
||||
ch_power = lin2db(final_carrier.power.signal * 1e3)
|
||||
print(
|
||||
'{:5}{:26.2f}{:26.2f}{:28.2f}{:28.2f}{:28.2f}' .format(
|
||||
final_carrier.channel_number, round(
|
||||
ch_freq, 2), round(
|
||||
ch_power, 2), round(
|
||||
ch_osnr, 2), round(
|
||||
ch_snr_nl, 2), round(
|
||||
ch_snr, 2)))
|
||||
|
||||
if not args.source:
|
||||
print(f'\n(No source node specified: picked {source.uid})')
|
||||
elif not valid_source:
|
||||
print(f'\n(Invalid source node {args.source!r} replaced with {source.uid})')
|
||||
|
||||
if not args.destination:
|
||||
print(f'\n(No destination node specified: picked {destination.uid})')
|
||||
elif not valid_destination:
|
||||
print(f'\n(Invalid destination node {args.destination!r} replaced with {destination.uid})')
|
||||
|
||||
if args.plot:
|
||||
plot_results(network, path, source, destination, infos)
|
||||
|
||||
Reference in New Issue
Block a user