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https://github.com/Telecominfraproject/oopt-gnpy.git
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4b94481ecb
The option is only set for gnpy-transmission-main. The spectrum file is a list of of spectrum objects, each defining fmin, fmax and spectrum attributes using the same definition as SI in eqpt_config.json. the object list should be contiguous spectrum definitions and not overlapping. For now, I have not integrated the possibility to directly use transceivers type and mode in the list. user can define sets of contiguous channels and a label to identify the spectrum bands. If no label are defined, th program justs uses the index + baud rate of the spectrum bands as label. Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com> Change-Id: Ibc01e59e461e5e933e95d23dacbc5289e275ccf7
465 lines
22 KiB
Python
465 lines
22 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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'''
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gnpy.tools.cli_examples
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=======================
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Common code for CLI examples
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'''
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import argparse
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import logging
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import os.path
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import sys
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from math import ceil
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from numpy import linspace, mean
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from pathlib import Path
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from copy import deepcopy
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import gnpy.core.ansi_escapes as ansi_escapes
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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.utils import db2lin, lin2db, automatic_nch
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from gnpy.topology.request import (ResultElement, jsontocsv, compute_path_dsjctn, requests_aggregation,
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BLOCKING_NOPATH, correct_json_route_list,
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deduplicate_disjunctions, compute_path_with_disjunction,
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PathRequest, compute_constrained_path, propagate, update_spectrum_power)
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from gnpy.topology.spectrum_assignment import build_oms_list, pth_assign_spectrum
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from gnpy.tools.json_io import load_equipment, load_network, load_json, load_requests, save_network, \
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requests_from_json, disjunctions_from_json, save_json, load_initial_spectrum,\
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_spectrum_from_json
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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 / 'example-data'
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_help_footer = '''
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This program is part of GNPy, https://github.com/TelecomInfraProject/oopt-gnpy
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Learn more at https://gnpy.readthedocs.io/
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'''
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_help_fname_json = 'FILE.json'
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_help_fname_json_csv = 'FILE.(json|csv)'
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def show_example_data_dir():
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print(f'{_examples_dir}/')
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def load_common_data(equipment_filename, topology_filename, simulation_filename, save_raw_network_filename):
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'''Load common configuration from JSON files'''
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try:
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equipment = load_equipment(equipment_filename)
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network = load_network(topology_filename, equipment)
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if save_raw_network_filename is not None:
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save_network(network, save_raw_network_filename)
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print(f'{ansi_escapes.blue}Raw network (no optimizations) saved to {save_raw_network_filename}{ansi_escapes.reset}')
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if not simulation_filename:
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SimParams.default()
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if next((node for node in network if isinstance(node, RamanFiber)), None) is not None:
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print(f'{ansi_escapes.red}Invocation error:{ansi_escapes.reset} '
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f'RamanFiber requires passing simulation params via --sim-params')
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sys.exit(1)
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else:
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SimParams.set_params(load_json(simulation_filename))
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except exceptions.EquipmentConfigError as e:
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print(f'{ansi_escapes.red}Configuration error in the equipment library:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.NetworkTopologyError as e:
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print(f'{ansi_escapes.red}Invalid network definition:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.ParametersError as e:
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print(f'{ansi_escapes.red}Simulation parameters error:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.ConfigurationError as e:
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print(f'{ansi_escapes.red}Configuration error:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.ServiceError as e:
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print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {e}')
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sys.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 _add_common_options(parser: argparse.ArgumentParser, network_default: Path):
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parser.add_argument('topology', nargs='?', type=Path, metavar='NETWORK-TOPOLOGY.(json|xls|xlsx)',
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default=network_default,
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help='Input network topology')
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parser.add_argument('-v', '--verbose', action='count', default=0,
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help='Increase verbosity (can be specified several times)')
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parser.add_argument('-e', '--equipment', type=Path, metavar=_help_fname_json,
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default=_examples_dir / 'eqpt_config.json', help='Equipment library')
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parser.add_argument('--sim-params', type=Path, metavar=_help_fname_json,
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default=None, help='Path to the JSON containing simulation parameters (required for Raman). '
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f'Example: {_examples_dir / "sim_params.json"}')
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parser.add_argument('--save-network', type=Path, metavar=_help_fname_json,
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help='Save the final network as a JSON file')
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parser.add_argument('--save-network-before-autodesign', type=Path, metavar=_help_fname_json,
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help='Dump the network into a JSON file prior to autodesign')
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parser.add_argument('--no-insert-edfas', action='store_true',
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help='Disable insertion of EDFAs after ROADMs and fibers '
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'as well as splitting of fibers by auto-design.')
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def transmission_main_example(args=None):
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parser = argparse.ArgumentParser(
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description='Send a full spectrum load through the network from point A to point B',
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epilog=_help_footer,
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formatter_class=argparse.ArgumentDefaultsHelpFormatter,
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)
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_add_common_options(parser, network_default=_examples_dir / 'edfa_example_network.json')
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parser.add_argument('--show-channels', action='store_true', help='Show final per-channel OSNR and GSNR summary')
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parser.add_argument('-pl', '--plot', action='store_true')
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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('-spectrum', '--mixed-rate-spectrum-file', help='user defined mixed rate spectrum json file')
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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(args if args is not None else sys.argv[1:])
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_setup_logging(args)
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(equipment, network) = load_common_data(args.equipment, args.topology, args.sim_params, args.save_network_before_autodesign)
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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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sys.exit('Network has no transceivers!')
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if len(transceivers) < 2:
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sys.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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sys.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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params['effective_freq_slot'] = None
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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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if args.mixed_rate_spectrum_file:
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req.initial_spectrum = load_initial_spectrum(args.mixed_rate_spectrum_file, equipment)
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print('warning: user input for spectrum used for propagation instead of SI')
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nb_channels = len(req.initial_spectrum)
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else:
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nb_channels = req.nb_channel
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print(f'There are {nb_channels} channels propagating')
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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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try:
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build_network(network, equipment, pref_ch_db, pref_total_db, args.no_insert_edfas)
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except exceptions.NetworkTopologyError as e:
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print(f'{ansi_escapes.red}Invalid network definition:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.ConfigurationError as e:
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print(f'{ansi_escapes.red}Configuration error:{ansi_escapes.reset} {e}')
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sys.exit(1)
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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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power_range = [0]
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if power_mode:
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# power cannot be changed in gain mode
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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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if hasattr(req, 'initial_spectrum'):
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record_intial_spectrum = req.initial_spectrum
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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 initial spectrum did not contain any power, now we need to use this one.
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# note the initial power defines a differential wrt req.power so that if req.power is set to 2mW (3dBm)
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# and initial spectrum was set to 0, this sets a initial per channel delta power to -3dB, so that
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# whatever the equalization, -3 dB is applied on all channels (ie initial power in initial spectrum pre-empts
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# pow option)
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if hasattr(req, 'initial_spectrum'):
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# without deepcopy, the previous dp setting is recorded as a user defined and spectrum is not properly
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# updated for the power sweep dp_db
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req.initial_spectrum = deepcopy(record_intial_spectrum)
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update_spectrum_power(req)
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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 = propagate(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 GSNR (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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if args.save_network is not None:
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save_network(network, args.save_network)
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print(f'{ansi_escapes.blue}Network (after autodesign) saved to {args.save_network}{ansi_escapes.reset}')
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if args.show_channels:
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print('\nThe GSNR 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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'GSNR (signal bw, dB)'))
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for final_carrier, ch_osnr, ch_snr_nl, ch_snr in zip(
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infos.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}{:26.5f}{:26.2f}{:28.2f}{:28.2f}{:28.2f}' .format(
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final_carrier.channel_number, round(
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ch_freq, 5), 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)
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def _path_result_json(pathresult):
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return {'response': [n.json for n in pathresult]}
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def path_requests_run(args=None):
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parser = argparse.ArgumentParser(
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description='Compute performance for a list of services provided in a json file or an excel sheet',
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epilog=_help_footer,
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formatter_class=argparse.ArgumentDefaultsHelpFormatter,
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)
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_add_common_options(parser, network_default=_examples_dir / 'meshTopologyExampleV2.xls')
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parser.add_argument('service_filename', nargs='?', type=Path, metavar='SERVICES-REQUESTS.(json|xls|xlsx)',
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default=_examples_dir / 'meshTopologyExampleV2.xls',
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help='Input service file')
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parser.add_argument('-bi', '--bidir', action='store_true',
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help='considers that all demands are bidir')
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parser.add_argument('-o', '--output', type=Path, metavar=_help_fname_json_csv,
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help='Store satisifed requests into a JSON or CSV file')
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args = parser.parse_args(args if args is not None else sys.argv[1:])
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_setup_logging(args)
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_logger.info(f'Computing path requests {args.service_filename} into JSON format')
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(equipment, network) = load_common_data(args.equipment, args.topology, args.sim_params, args.save_network_before_autodesign)
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# Build the network once using the default power defined in SI in eqpt config
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# TODO 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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try:
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build_network(network, equipment, p_db, p_total_db, args.no_insert_edfas)
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except exceptions.NetworkTopologyError as e:
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print(f'{ansi_escapes.red}Invalid network definition:{ansi_escapes.reset} {e}')
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sys.exit(1)
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except exceptions.ConfigurationError as e:
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print(f'{ansi_escapes.red}Configuration error:{ansi_escapes.reset} {e}')
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sys.exit(1)
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if args.save_network is not None:
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save_network(network, args.save_network)
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print(f'{ansi_escapes.blue}Network (after autodesign) saved to {args.save_network}{ansi_escapes.reset}')
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oms_list = build_oms_list(network, equipment)
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try:
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data = load_requests(args.service_filename, equipment, bidir=args.bidir,
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network=network, network_filename=args.topology)
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rqs = requests_from_json(data, equipment)
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except exceptions.ServiceError as e:
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print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {e}')
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sys.exit(1)
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# check that request ids are unique. Non unique ids, may
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# mess the computation: better to stop the computation
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all_ids = [r.request_id for r in rqs]
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if len(all_ids) != len(set(all_ids)):
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for item in list(set(all_ids)):
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all_ids.remove(item)
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msg = f'Requests id {all_ids} are not unique'
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_logger.critical(msg)
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sys.exit()
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rqs = correct_json_route_list(network, rqs)
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# pths = compute_path(network, equipment, rqs)
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dsjn = disjunctions_from_json(data)
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print(f'{ansi_escapes.blue}List of disjunctions{ansi_escapes.reset}')
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print(dsjn)
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# need to warn or correct in case of wrong disjunction form
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# disjunction must not be repeated with same or different ids
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dsjn = deduplicate_disjunctions(dsjn)
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# Aggregate demands with same exact constraints
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print(f'{ansi_escapes.blue}Aggregating similar requests{ansi_escapes.reset}')
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rqs, dsjn = requests_aggregation(rqs, dsjn)
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# TODO export novel set of aggregated demands in a json file
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print(f'{ansi_escapes.blue}The following services have been requested:{ansi_escapes.reset}')
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print(rqs)
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print(f'{ansi_escapes.blue}Computing all paths with constraints{ansi_escapes.reset}')
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try:
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pths = compute_path_dsjctn(network, equipment, rqs, dsjn)
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except exceptions.DisjunctionError as this_e:
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print(f'{ansi_escapes.red}Disjunction error:{ansi_escapes.reset} {this_e}')
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sys.exit(1)
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|
|
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print(f'{ansi_escapes.blue}Propagating on selected path{ansi_escapes.reset}')
|
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propagatedpths, reversed_pths, reversed_propagatedpths = compute_path_with_disjunction(network, equipment, rqs, pths)
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# Note that deepcopy used in compute_path_with_disjunction returns
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# a list of nodes which are not belonging to network (they are copies of the node objects).
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# so there can not be propagation on these nodes.
|
|
|
|
pth_assign_spectrum(pths, rqs, oms_list, reversed_pths)
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|
|
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print(f'{ansi_escapes.blue}Result summary{ansi_escapes.reset}')
|
|
header = ['req id', ' demand', ' GSNR@bandwidth A-Z (Z-A)', ' GSNR@0.1nm A-Z (Z-A)',
|
|
' Receiver minOSNR', ' mode', ' Gbit/s', ' nb of tsp pairs',
|
|
'N,M or blocking reason']
|
|
data = []
|
|
data.append(header)
|
|
for i, this_p in enumerate(propagatedpths):
|
|
rev_pth = reversed_propagatedpths[i]
|
|
if rev_pth and this_p:
|
|
psnrb = f'{round(mean(this_p[-1].snr),2)} ({round(mean(rev_pth[-1].snr),2)})'
|
|
psnr = f'{round(mean(this_p[-1].snr_01nm), 2)}' +\
|
|
f' ({round(mean(rev_pth[-1].snr_01nm),2)})'
|
|
elif this_p:
|
|
psnrb = f'{round(mean(this_p[-1].snr),2)}'
|
|
psnr = f'{round(mean(this_p[-1].snr_01nm),2)}'
|
|
|
|
try:
|
|
if rqs[i].blocking_reason in BLOCKING_NOPATH:
|
|
line = [f'{rqs[i].request_id}', f' {rqs[i].source} to {rqs[i].destination} :',
|
|
f'-', f'-', f'-', f'{rqs[i].tsp_mode}', f'{round(rqs[i].path_bandwidth * 1e-9,2)}',
|
|
f'-', f'{rqs[i].blocking_reason}']
|
|
else:
|
|
line = [f'{rqs[i].request_id}', f' {rqs[i].source} to {rqs[i].destination} : ', psnrb,
|
|
psnr, f'-', f'{rqs[i].tsp_mode}', f'{round(rqs[i].path_bandwidth * 1e-9, 2)}',
|
|
f'-', f'{rqs[i].blocking_reason}']
|
|
except AttributeError:
|
|
line = [f'{rqs[i].request_id}', f' {rqs[i].source} to {rqs[i].destination} : ', psnrb,
|
|
psnr, f'{rqs[i].OSNR + equipment["SI"]["default"].sys_margins}',
|
|
f'{rqs[i].tsp_mode}', f'{round(rqs[i].path_bandwidth * 1e-9,2)}',
|
|
f'{ceil(rqs[i].path_bandwidth / rqs[i].bit_rate) }', f'({rqs[i].N},{rqs[i].M})']
|
|
data.append(line)
|
|
|
|
col_width = max(len(word) for row in data for word in row[2:]) # padding
|
|
firstcol_width = max(len(row[0]) for row in data) # padding
|
|
secondcol_width = max(len(row[1]) for row in data) # padding
|
|
for row in data:
|
|
firstcol = ''.join(row[0].ljust(firstcol_width))
|
|
secondcol = ''.join(row[1].ljust(secondcol_width))
|
|
remainingcols = ''.join(word.center(col_width, ' ') for word in row[2:])
|
|
print(f'{firstcol} {secondcol} {remainingcols}')
|
|
print(f'{ansi_escapes.yellow}Result summary shows mean GSNR and OSNR (average over all channels){ansi_escapes.reset}')
|
|
|
|
if args.output:
|
|
result = []
|
|
# assumes that list of rqs and list of propgatedpths have same order
|
|
for i, pth in enumerate(propagatedpths):
|
|
result.append(ResultElement(rqs[i], pth, reversed_propagatedpths[i]))
|
|
temp = _path_result_json(result)
|
|
if args.output.suffix.lower() == '.json':
|
|
save_json(temp, args.output)
|
|
print(f'{ansi_escapes.blue}Saved JSON to {args.output}{ansi_escapes.reset}')
|
|
elif args.output.suffix.lower() == '.csv':
|
|
with open(args.output, "w", encoding='utf-8') as fcsv:
|
|
jsontocsv(temp, equipment, fcsv)
|
|
print(f'{ansi_escapes.blue}Saved CSV to {args.output}{ansi_escapes.reset}')
|
|
else:
|
|
print(f'{ansi_escapes.red}Cannot save output: neither JSON nor CSV file{ansi_escapes.reset}')
|
|
sys.exit(1)
|