Use real IP addresses for the US-based Cassinis

Change-Id: I158bb84261a56d71074155880c4359033b2f1044

.docker-travis.sh

@@ -5,17 +5,16 @@ set -e
 IMAGE_NAME=telecominfraproject/oopt-gnpy
 IMAGE_TAG=$(git describe --tags)
 
+if [[ "${TRAVIS_BRANCH}" == "experimental/2019-summit" ]]; then
+  IMAGE_NAME=telecominfraproject/oopt-gnpy-experimental
+fi
+
 ALREADY_FOUND=0
 docker pull ${IMAGE_NAME}:${IMAGE_TAG} && ALREADY_FOUND=1
 
 if [[ $ALREADY_FOUND == 0 ]]; then
   docker build . -t ${IMAGE_NAME}
   docker tag ${IMAGE_NAME} ${IMAGE_NAME}:${IMAGE_TAG}
-
-  # shared directory setup: do not clobber the real data
-  mkdir trash
-  cd trash
-  docker run -it --rm --volume $(pwd):/shared ${IMAGE_NAME} ./transmission_main_example.py
 else
   echo "Image ${IMAGE_NAME}:${IMAGE_TAG} already available, will just update the other tags"
 fi
@@ -43,5 +42,11 @@ if [[ "${TRAVIS_PULL_REQUEST}" == "false" ]]; then
       docker push ${IMAGE_NAME}:${IMAGE_TAG}
     fi
     docker push ${IMAGE_NAME}:stable
+  elif [[ "${TRAVIS_BRANCH}" == "experimental/2019-summit" ]]; then
+    echo "Publishing ad-hoc image for the TIP Summit demo"
+    do_docker_login
+    if [[ $ALREADY_FOUND == 0 ]]; then
+      docker push ${IMAGE_NAME}:${IMAGE_TAG}
+    fi
   fi
 fi

Dockerfile

@@ -2,6 +2,7 @@ FROM python:3.7-slim
 COPY . /oopt-gnpy
 WORKDIR /oopt-gnpy
 RUN python setup.py install
-WORKDIR /shared/examples
+WORKDIR /shared
 ENTRYPOINT ["/oopt-gnpy/.docker-entry.sh"]
-CMD ["/bin/bash"]
+CMD ["python", "examples/path_requests_run.py", "examples/2019-demo-topology.json", "examples/2019-demo-services.json", "examples/2019-demo-equipment.json", "--rest"]
+EXPOSE 5000

examples/2019-demo-equipment.json

@@ -0,0 +1,124 @@
+{     "Edfa":[
+
+            {
+            "type_variety": "fixed27",
+            "type_def": "fixed_gain",
+            "gain_flatmax": 27,
+            "gain_min": 27,
+            "p_max": 21,
+            "nf0": 5.5,
+            "allowed_for_design": false
+            },
+
+            {
+            "type_variety": "fixed22",
+            "type_def": "fixed_gain",
+            "gain_flatmax": 22,
+            "gain_min": 22,
+            "p_max": 21,
+            "nf0": 5.5,
+            "allowed_for_design": false
+            }
+      ],
+      "Fiber":[{
+            "type_variety": "SSMF",
+            "dispersion": 1.67e-05,
+            "gamma": 0.00127
+            },
+            {
+            "type_variety": "NZDF",
+            "dispersion": 0.5e-05,
+            "gamma": 0.00146
+            },
+            {
+            "type_variety": "LOF",
+            "dispersion": 2.2e-05,
+            "gamma": 0.000843
+            }
+      ],
+      "Span":[{
+            "power_mode": false,
+            "delta_power_range_db": [-2,3,0.5],
+            "max_fiber_lineic_loss_for_raman": 0.25,
+            "target_extended_gain": 2.5,
+            "max_length": 150,
+            "length_units": "km",
+            "max_loss": 28,
+            "padding": 10,
+            "EOL": 0,
+            "con_in": 0,
+            "con_out": 0
+            }
+      ],
+      "Roadm":[{
+            "target_pch_out_db": -25,
+            "add_drop_osnr": 30.00,
+            "restrictions": {
+                            "preamp_variety_list":[],
+                            "booster_variety_list":[]
+                            }            
+            }],
+      "SI":[{
+            "f_min": 191.6e12,
+            "baud_rate": 32e9,
+            "f_max":195.1e12,
+            "spacing": 50e9,
+            "power_dbm": 0,
+            "power_range_db": [0,0,1],
+            "roll_off": 0.15,
+            "tx_osnr": 40,
+            "sys_margins": 2
+            }],
+      "Transceiver":[
+            {
+            "type_variety": "Cassini",
+            "frequency":{
+                        "min": 191.35e12,
+                        "max": 196.1e12
+                        },
+            "mode":[
+                       {
+
+                       "format": "dp-qpsk",
+                       "baud_rate": 32e9,
+                       "OSNR": 11,
+                       "bit_rate": 100e9,
+                       "roll_off": 0.15,
+                       "tx_osnr": 40,
+                       "min_spacing": 37.5e9,
+                       "cost":1
+                       },
+                       {
+                       "format": "16-qam",
+                       "baud_rate": 66e9,
+                       "OSNR": 15,
+                       "bit_rate": 200e9,
+                       "roll_off": 0.15,
+                       "tx_osnr": 40,
+                       "min_spacing": 75e9,
+                       "cost":1
+                       }
+                   ]
+            },
+            {
+            "type_variety": "Voyager",
+            "frequency":{
+                        "min": 191.35e12,
+                        "max": 196.1e12
+                        },
+            "mode":[
+                       {
+                       "format": "mode 1",
+                       "baud_rate": 32e9,
+                       "OSNR": 12,
+                       "bit_rate": 100e9,
+                       "roll_off": 0.15,
+                       "tx_osnr": 40,
+                       "min_spacing": 37.5e9,
+                       "cost":1
+                       }
+                   ]
+            }
+      ]
+
+}

examples/2019-demo-services.json

@@ -0,0 +1,67 @@
+{
+  "path-request": [
+    {
+      "request-id": "first",
+      "source": "netconf:10.0.254.93:830",
+      "destination": "netconf:10.0.254.94:830",
+      "src-tp-id": "trx-Amsterdam",
+      "dst-tp-id": "trx-Bremen",
+      "bidirectional": true,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Cassini",
+          "trx_mode": null,
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 100000000000.0
+        }
+      }
+    },
+    {
+      "request-id": "second",
+      "source": "netconf:10.0.254.93:830",
+      "destination": "netconf:10.0.254.94:830",
+      "src-tp-id": "trx-Amsterdam",
+      "dst-tp-id": "trx-Bremen",
+      "bidirectional": true,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Cassini",
+          "trx_mode": null,
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 100000000000.0
+        }
+      }
+    }
+  ],
+  "synchronization": [
+    {
+      "synchronization-id": "some redundancy please",
+      "svec": {
+        "relaxable": "false",
+        "disjointness": "node link",
+        "request-id-number": [
+          "first",
+          "second"
+        ]
+      }
+    }
+  ]
+}

examples/2019-generate-tip-demo.py

@@ -0,0 +1,179 @@
+# How many nodes in the ring topology? Up to eight is supported, then I ran out of cities..
+HOW_MANY = 3
+
+# city names
+ALL_CITIES = [
+    'Amsterdam',
+    'Bremen',
+    'Cologne',
+    'Dueseldorf',
+    'Eindhoven',
+    'Frankfurt',
+    'Ghent',
+    'Hague',
+]
+# end of configurable parameters
+
+
+J = {
+    "elements": [],
+    "connections": [],
+}
+
+def unidir_join(a, b):
+    global J
+    J["connections"].append(
+        {"from_node": a, "to_node": b}
+    )
+
+def mk_edfa(name, gain, voa=0.0):
+    global J
+    J["elements"].append(
+        {"uid": name, "type": "Edfa", "type_variety": f"fixed{gain}", "operational": {"gain_target": gain, "out_voa": voa}}
+    )
+
+def add_att(a, b, att):
+    global J
+    if att > 0:
+        uid = f"att-({a})-({b})"
+    else:
+        uid = f"splice-({a})-({b})"
+    J["elements"].append(
+        {"uid": uid, "type": "Fused", "params": {"loss": att}},
+    )
+    unidir_join(a, uid)
+    unidir_join(uid, b)
+    return uid
+
+def build_fiber(city1, city2):
+    global J
+    J["elements"].append(
+        {
+            "uid": f"fiber-{city1}-{city2}",
+            "type": "Fiber",
+            "type_variety": "SSMF",
+            "params": {
+                "length": 50,
+                "length_units": "km",
+                "loss_coef": 0.2,
+                "con_in": 1.5,
+                "con_out": 1.5,
+            }
+        }
+    )
+
+def unidir_patch(a, b):
+    global J
+    uid = f"patch-({a})-({b})"
+    J["elements"].append(
+        {
+            "uid": uid,
+            "type": "Fiber",
+            "type_variety": "SSMF",
+            "params": {
+                "length": 0,
+                "length_units": "km",
+                "loss_coef": 0.2,
+                "con_in": 0.5,
+                "con_out": 0.5,
+            }
+        }
+    )
+    add_att(a, uid, 0.0)
+    add_att(uid, b, 0.0)
+
+for CITY in (ALL_CITIES[x] for x in range(0, HOW_MANY)):
+    J["elements"].append(
+        {"uid": f"trx-{CITY}", "type": "Transceiver"}
+    )
+    target_pwr = [
+        {"to_node": f"trx-{CITY}", "target_pch_out_db": -25},
+        {"to_node": f"splice-(roadm-{CITY}-AD)-(patch-(roadm-{CITY}-AD)-(roadm-{CITY}-L1))", "target_pch_out_db": -12},
+        {"to_node": f"splice-(roadm-{CITY}-AD)-(patch-(roadm-{CITY}-AD)-(roadm-{CITY}-L2))", "target_pch_out_db": -12},
+    ]
+    J["elements"].append(
+        {"uid": f"roadm-{CITY}-AD", "type": "Roadm", "params": {"target_pch_out_db": -2.0, "per_degree_target_pch_out_db": target_pwr}}
+    )
+    unidir_join(f"trx-{CITY}", f"roadm-{CITY}-AD")
+    unidir_join(f"roadm-{CITY}-AD", f"trx-{CITY}")
+
+    for n in (1,2):
+        target_pwr = [
+            {"to_node": f"roadm-{CITY}-L{n}-booster", "target_pch_out_db": -23},
+            {"to_node": f"splice-(roadm-{CITY}-L{n})-(patch-(roadm-{CITY}-L{n})-(roadm-{CITY}-AD))", "target_pch_out_db": -12},
+        ]
+        for m in (1,2):
+            if m == n:
+                continue
+            target_pwr.append(
+              {"to_node": f"splice-(roadm-{CITY}-L{n})-(patch-(roadm-{CITY}-L{n})-(roadm-{CITY}-L{m}))", "target_pch_out_db": -12},
+            )
+        J["elements"].append(
+            {"uid": f"roadm-{CITY}-L{n}", "type": "Roadm", "params": {"target_pch_out_db": -23.0, "per_degree_target_pch_out_db": target_pwr}}
+        )
+        mk_edfa(f"roadm-{CITY}-L{n}-booster", 22)
+        mk_edfa(f"roadm-{CITY}-L{n}-preamp", 27)
+        unidir_join(f"roadm-{CITY}-L{n}", f"roadm-{CITY}-L{n}-booster")
+        unidir_join(f"roadm-{CITY}-L{n}-preamp", f"roadm-{CITY}-L{n}")
+
+        unidir_patch(f"roadm-{CITY}-AD", f"roadm-{CITY}-L{n}")
+        unidir_patch(f"roadm-{CITY}-L{n}", f"roadm-{CITY}-AD")
+        for m in (1,2):
+            if m == n:
+                continue
+            #add_att(f"roadm-{CITY}-L{n}", f"roadm-{CITY}-L{m}", 22)
+            unidir_patch(f"roadm-{CITY}-L{n}", f"roadm-{CITY}-L{m}")
+
+for city1, city2 in ((ALL_CITIES[i], ALL_CITIES[i + 1] if i < HOW_MANY - 1 else ALL_CITIES[0]) for i in range(0, HOW_MANY)):
+    build_fiber(city1, city2)
+    unidir_join(f"roadm-{city1}-L1-booster", f"fiber-{city1}-{city2}")
+    unidir_join(f"fiber-{city1}-{city2}", f"roadm-{city2}-L2-preamp")
+    build_fiber(city2, city1)
+    unidir_join(f"roadm-{city2}-L2-booster", f"fiber-{city2}-{city1}")
+    unidir_join(f"fiber-{city2}-{city1}", f"roadm-{city1}-L1-preamp")
+
+
+for _, E in enumerate(J["elements"]):
+    uid = E["uid"]
+    if uid.startswith("roadm-") and (uid.endswith("-L1-booster") or uid.endswith("-L2-booster")):
+        E["operational"]["out_voa"] = 12.0
+    #if uid.endswith("-AD-add"):
+    #    E["operational"]["out_voa"] = 21
+
+translate = {
+    #"trx-Amsterdam": "10.0.254.93",
+    #"trx-Bremen": "10.0.254.94",
+    "trx-Amsterdam": "10.0.254.76",
+    "trx-Bremen": "10.0.254.77",
+
+    # Amsterdam A/D: coherent-v9u
+    "roadm-Amsterdam-AD": "10.0.254.107",
+    # Bremen A/D: -spi
+    "roadm-Bremen-AD": "10.0.254.225",
+
+    # Amsterdam -> Bremen ...QR79
+    "roadm-Amsterdam-L1": "10.0.254.78",
+    # Bremen -> Amsterdam ...QCP9
+    "roadm-Bremen-L2": "10.0.254.102",
+
+    # Bremen -> Cologne ...WKP
+    "roadm-Bremen-L1": "10.0.254.100",
+    # Cologne -> Bremen ...QLK6
+    "roadm-Cologne-L2": "10.0.254.104",
+
+    # Cologne -> Amsterdam ...TQQ
+    "roadm-Cologne-L1": "10.0.254.99",
+    # Amsterdam -> Cologne ...Q7JS
+    "roadm-Amsterdam-L2": "10.0.254.79",
+
+    # spare Line/Degree ...QC8B
+    "spare-line-degree": "10.0.254.101",
+    # spare Add/Drop: ...NNN
+    "spare-add-drop": "10.0.254.228",
+}
+
+import json
+s = json.dumps(J, indent=2)
+for (old, new) in translate.items():
+    s = s.replace(f'"{old}"', f'"netconf:{new}:830"')
+print(s)

examples/path_requests_run.py

@@ -21,7 +21,7 @@ from json import dumps, loads
 from numpy import mean
 from gnpy.core.service_sheet import convert_service_sheet, Request_element, Element
 from gnpy.core.utils import load_json
-from gnpy.core.network import load_network, build_network, save_network
+from gnpy.core.network import load_network, build_network, save_network, network_from_json
 from gnpy.core.equipment import load_equipment, trx_mode_params, automatic_nch
 from gnpy.core.elements import Transceiver, Roadm
 from gnpy.core.utils import db2lin, lin2db
@@ -38,6 +38,9 @@ from copy import copy, deepcopy
 from textwrap import dedent
 from math import ceil
 
+from flask import Flask, jsonify, make_response, request
+from flask_restful import Api, Resource, reqparse, fields
+
 #EQPT_LIBRARY_FILENAME = Path(__file__).parent / 'eqpt_config.json'
 
 LOGGER = getLogger(__name__)
@@ -58,7 +61,12 @@ PARSER.add_argument('-bi', '--bidir', action='store_true',\
 PARSER.add_argument('-v', '--verbose', action='count', default=0,\
                     help='increases verbosity for each occurence')
 PARSER.add_argument('-o', '--output', type=Path)
+PARSER.add_argument('-r', '--rest', action='count', default=0, help='use the REST API')
 
+NETWORK_FILENAME = 'topoDemov1.json' #'disagregatedTopoDemov1.json' #
+
+APP = Flask(__name__, static_url_path="")
+API = Api(APP)
 
 def requests_from_json(json_data, equipment):
     """ converts the json data into a list of requests elements
@@ -360,32 +368,9 @@ def path_result_json(pathresult):
     }
     return data
 
-def main(args):
-    """ main function that calls all functions
+def compute_requests(network, data, equipment):
+    """ Main program calling functions
     """
-    LOGGER.info(f'Computing path requests {args.service_filename} into JSON format')
-    print('\x1b[1;34;40m' +\
-          f'Computing path requests {args.service_filename} into JSON format'+ '\x1b[0m')
-    # for debug
-    # print( args.eqpt_filename)
-
-    try:
-        data = load_requests(args.service_filename, args.eqpt_filename, args.bidir)
-        equipment = load_equipment(args.eqpt_filename)
-        network = load_network(args.network_filename, equipment)
-    except EquipmentConfigError as this_e:
-        print(f'{ansi_escapes.red}Configuration error in the equipment library:{ansi_escapes.reset} {this_e}')
-        exit(1)
-    except NetworkTopologyError as this_e:
-        print(f'{ansi_escapes.red}Invalid network definition:{ansi_escapes.reset} {this_e}')
-        exit(1)
-    except ConfigurationError as this_e:
-        print(f'{ansi_escapes.red}Configuration error:{ansi_escapes.reset} {this_e}')
-        exit(1)
-    except ServiceError as this_e:
-        print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {this_e}')
-        exit(1)
-
     # Build the network once using the default power defined in SI in eqpt config
     # TODO power density: db2linp(ower_dbm": 0)/power_dbm": 0 * nb channels as defined by
     # spacing, f_min and f_max
@@ -394,7 +379,7 @@ def main(args):
     p_total_db = p_db + lin2db(automatic_nch(equipment['SI']['default'].f_min,\
         equipment['SI']['default'].f_max, equipment['SI']['default'].spacing))
     build_network(network, equipment, p_db, p_total_db)
-    save_network(args.network_filename, network)
+    save_network(ARGS.network_filename, network)
 
     oms_list = build_oms_list(network, equipment)
 
@@ -402,7 +387,7 @@ def main(args):
         rqs = requests_from_json(data, equipment)
     except ServiceError as this_e:
         print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {this_e}')
-        exit(1)
+        raise this_e
     # check that request ids are unique. Non unique ids, may
     # mess the computation: better to stop the computation
     all_ids = [r.request_id for r in rqs]
@@ -411,12 +396,13 @@ def main(args):
             all_ids.remove(item)
         msg = f'Requests id {all_ids} are not unique'
         LOGGER.critical(msg)
-        exit()
+        raise ServiceError(msg)
     try:
         rqs = correct_route_list(network, rqs)
     except ServiceError as this_e:
         print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {this_e}')
-        exit(1)
+        raise this_e
+        #exit(1)
     # pths = compute_path(network, equipment, rqs)
     dsjn = disjunctions_from_json(data)
 
@@ -440,7 +426,7 @@ def main(args):
         pths = compute_path_dsjctn(network, equipment, rqs, dsjn)
     except DisjunctionError as this_e:
         print(f'{ansi_escapes.red}Disjunction error:{ansi_escapes.reset} {this_e}')
-        exit(1)
+        raise this_e
 
     print('\x1b[1;34;40m' + f'Propagating on selected path' + '\x1b[0m')
     propagatedpths, reversed_pths, reversed_propagatedpths = \
@@ -493,20 +479,89 @@ def main(args):
     print('\x1b[1;33;40m'+f'Result summary shows mean SNR and OSNR (average over all channels)' +\
           '\x1b[0m')
 
-    if args.output:
+    return propagatedpths, reversed_propagatedpths, rqs
+
+
+def launch_cli(network, data, equipment):
+    """ Compute requests using network, data and equipment with client line interface
+    """
+    propagatedpths, reversed_propagatedpths, rqs = compute_requests(network, data, equipment)
+    #Generate the output
+    if ARGS.output :
         result = []
         # assumes that list of rqs and list of propgatedpths have same order
         for i, pth in enumerate(propagatedpths):
             result.append(Result_element(rqs[i], pth, reversed_propagatedpths[i]))
         temp = path_result_json(result)
-        fnamecsv = f'{str(args.output)[0:len(str(args.output))-len(str(args.output.suffix))]}.csv'
-        fnamejson = f'{str(args.output)[0:len(str(args.output))-len(str(args.output.suffix))]}.json'
+        fnamecsv = f'{str(ARGS.output)[0:len(str(ARGS.output))-len(str(ARGS.output.suffix))]}.csv'
+        fnamejson = f'{str(ARGS.output)[0:len(str(ARGS.output))-len(str(ARGS.output.suffix))]}.json'
         with open(fnamejson, 'w', encoding='utf-8') as fjson:
             fjson.write(dumps(path_result_json(result), indent=2, ensure_ascii=False))
             with open(fnamecsv, "w", encoding='utf-8') as fcsv:
                 jsontocsv(temp, equipment, fcsv)
-                print('\x1b[1;34;40m'+f'saving in {args.output} and {fnamecsv}'+ '\x1b[0m')
+                print('\x1b[1;34;40m'+f'saving in {ARGS.output} and {fnamecsv}'+ '\x1b[0m')
 
+class GnpyAPI(Resource):
+    """ Compute requests using network, data and equipment with rest api
+    """
+    def get(self):
+        return {"ping": True}, 200
+
+    def post(self):
+        data = request.get_json()
+        equipment = load_equipment('examples/2019-demo-equipment.json')
+        topo_json = load_json('examples/2019-demo-topology.json')
+        network = network_from_json(topo_json, equipment)
+        try:
+            propagatedpths, reversed_propagatedpths, rqs = compute_requests(network, data, equipment)
+            # Generate the output
+            result = []
+            #assumes that list of rqs and list of propgatedpths have same order
+            for i, pth in enumerate(propagatedpths):
+                result.append(Result_element(rqs[i], pth, reversed_propagatedpths[i]))
+
+            return {"result":path_result_json(result)}, 201
+        except ServiceError as this_e:
+            msg = f'Service error: {this_e}'
+            return {"result": msg}, 400
+
+API.add_resource(GnpyAPI, '/gnpy-experimental')
+
+def main(args):
+    """ main function that calls all functions
+    """
+    LOGGER.info(f'Computing path requests {args.service_filename} into JSON format')
+    print('\x1b[1;34;40m' +\
+          f'Computing path requests {args.service_filename} into JSON format'+ '\x1b[0m')
+    # for debug
+    # print( args.eqpt_filename)
+
+    try:
+        data = load_requests(args.service_filename, args.eqpt_filename, args.bidir)
+        equipment = load_equipment(args.eqpt_filename)
+        network = load_network(args.network_filename, equipment)
+    except EquipmentConfigError as this_e:
+        print(f'{ansi_escapes.red}Configuration error in the equipment library:{ansi_escapes.reset} {this_e}')
+        exit(1)
+    except NetworkTopologyError as this_e:
+        print(f'{ansi_escapes.red}Invalid network definition:{ansi_escapes.reset} {this_e}')
+        exit(1)
+    except ConfigurationError as this_e:
+        print(f'{ansi_escapes.red}Configuration error:{ansi_escapes.reset} {this_e}')
+        exit(1)
+    except ServiceError as this_e:
+        print(f'{ansi_escapes.red}Service error:{ansi_escapes.reset} {this_e}')
+        exit(1)
+    # input_str = raw_input("How will you use your program: c:[cli] , a:[api] ?")
+    # print(input_str)
+    #
+    if ((args.rest == 1) and (args.output is None)):
+        print('you have chosen the rest mode')
+        APP.run(host='0.0.0.0', port=5000, debug=True)
+    elif ((args.rest > 1) or ((args.rest == 1) and (args.output is not None))):
+        print('command is not well formulated')
+    else:
+        launch_cli(network, data, equipment)
 
 if __name__ == '__main__':
     ARGS = PARSER.parse_args()

examples/serviceDemov1.json

@@ -0,0 +1,180 @@
+{
+  "path-request": [
+    {
+      "request-id": "0",
+      "source": "trx site_a",
+      "destination": "trx site_b",
+      "src-tp-id": "trx site_a",
+      "dst-tp-id": "trx site_b",
+      "bidirectional": false,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Voyager",
+          "trx_mode": null,
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 100000000000.0
+        }
+      }
+    },
+    {
+      "request-id": "1",
+      "source": "trx site_a",
+      "destination": "trx site_b",
+      "src-tp-id": "trx site_a",
+      "dst-tp-id": "trx site_b",
+      "bidirectional": false,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Voyager",
+          "trx_mode": "mode 1",
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 200000000000.0
+        }
+      },
+      "explicit-route-objects": {
+        "route-object-include-exclude": [
+          {
+            "explicit-route-usage": "route-include-ero",
+            "index": 0,
+            "num-unnum-hop": {
+              "node-id": "Span1ab",
+              "link-tp-id": "link-tp-id is not used",
+              "hop-type": "STRICT"
+            }
+          }
+        ]
+      }
+    },
+    {
+      "request-id": "2",
+      "source": "trx site_a",
+      "destination": "trx site_b",
+      "src-tp-id": "trx site_a",
+      "dst-tp-id": "trx site_b",
+      "bidirectional": false,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Voyager",
+          "trx_mode": "mode 1",
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 200000000000.0
+        }
+      },
+      "explicit-route-objects": {
+        "route-object-include-exclude": [
+          {
+            "explicit-route-usage": "route-include-ero",
+            "index": 0,
+            "num-unnum-hop": {
+              "node-id": "roadm site_c",
+              "link-tp-id": "link-tp-id is not used",
+              "hop-type": "STRICT"
+            }
+          }
+        ]
+      }
+    },
+    {
+      "request-id": "3",
+      "source": "trx site_a",
+      "destination": "trx site_b",
+      "src-tp-id": "trx site_a",
+      "dst-tp-id": "trx site_b",
+      "bidirectional": false,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Voyager",
+          "trx_mode": null,
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 100000000000.0
+        }
+      }
+    },
+    {
+      "request-id": "4",
+      "source": "trx site_a",
+      "destination": "trx site_b",
+      "src-tp-id": "trx site_a",
+      "dst-tp-id": "trx site_b",
+      "bidirectional": false,
+      "path-constraints": {
+        "te-bandwidth": {
+          "technology": "flexi-grid",
+          "trx_type": "Voyager",
+          "trx_mode": null,
+          "effective-freq-slot": [
+            {
+              "N": "null",
+              "M": "null"
+            }
+          ],
+          "spacing": 50000000000.0,
+          "max-nb-of-channel": null,
+          "output-power": null,
+          "path_bandwidth": 100000000000.0
+        }
+      }
+    }
+  ],
+  "synchronization": [
+    {
+      "synchronization-id": "x",
+      "svec": {
+        "relaxable": "false",
+        "disjointness": "node link",
+        "request-id-number": [
+          "3",
+          "0"
+        ]
+      }
+    },
+    {
+      "synchronization-id": "y",
+      "svec": {
+        "relaxable": "false",
+        "disjointness": "node link",
+        "request-id-number": [
+          "4",
+          "3",
+          "0"
+        ]
+      }
+    }
+  ]
+}

examples/topoDemov1.json

@@ -0,0 +1,703 @@
+{
+  "elements": [
+    {
+      "uid": "trx site_a",
+      "type": "Transceiver",
+      "metadata": {
+        "location": {
+          "latitude": 0,
+          "longitude": 0,
+          "city": "Site a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "roadm site_a",
+      "type": "Roadm",
+      "params": {
+        "target_pch_out_db": -20,
+        "restrictions": {
+          "preamp_variety_list": [],
+          "booster_variety_list": []
+        }
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0,
+          "longitude": 0,
+          "city": "Site a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1ab",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 100.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1ba",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 100.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span2ab",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span2ba",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "roadm site_b",
+      "type": "Roadm",
+      "params": {
+        "target_pch_out_db": -20,
+        "restrictions": {
+          "preamp_variety_list": [],
+          "booster_variety_list": []
+        }
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0,
+          "longitude": 0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "trx site_b",
+      "type": "Transceiver",
+      "metadata": {
+        "location": {
+          "latitude": 2,
+          "longitude": 0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster1 site_a",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp site_b",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster1 site_b",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp1 site_a",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster2 site_a",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp2 site_b",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster2 site_b",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp2 site_a",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster3 site_a",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp3 site_b",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster3 site_b",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site b",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp3 site_a",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_a",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "roadm site_c",
+      "type": "Roadm",
+      "params": {
+        "target_pch_out_db": -20,
+        "restrictions": {
+          "preamp_variety_list": [],
+          "booster_variety_list": []
+        }
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0,
+          "longitude": 0,
+          "city": "Site c",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster1 site_c",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site c",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp1 site_c",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_c",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "booster2 site_c",
+      "type": "Edfa",
+      "type_variety": "std_medium_gain",
+      "operational": {
+        "gain_target": 19.0,
+        "delta_p": -1.0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site c",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "preamp2 site_c",
+      "type": "Edfa",
+      "type_variety": "std_low_gain",
+      "operational": {
+        "gain_target": 18.0,
+        "delta_p": 0,
+        "tilt_target": 0,
+        "out_voa": 0
+      },
+      "metadata": {
+        "location": {
+          "latitude": 0.5,
+          "longitude": 0.0,
+          "city": "Site_c",
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1ac",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1ca",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1bc",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    },
+    {
+      "uid": "Span1cb",
+      "type": "Fiber",
+      "type_variety": "SSMF",
+      "params": {
+        "type_variety": "SSMF",
+        "length": 80.0,
+        "loss_coef": 0.2,
+        "length_units": "km",
+        "att_in": 0,
+        "con_in": 0.5,
+        "con_out": 0.5
+      },
+      "metadata": {
+        "location": {
+          "latitude": 1,
+          "longitude": 0,
+          "city": null,
+          "region": ""
+        }
+      }
+    }
+  ],
+  "connections": [
+    {
+      "from_node": "trx site_a",
+      "to_node": "roadm site_a"
+    },
+    {
+      "from_node": "roadm site_a",
+      "to_node": "booster1 site_a"
+    },
+    {
+      "from_node": "booster1 site_a",
+      "to_node": "Span1ab"
+    },
+    {
+      "from_node": "Span1ab",
+      "to_node": "preamp site_b"
+    },
+    {
+      "from_node": "preamp site_b",
+      "to_node": "roadm site_b"
+    },
+    {
+      "from_node": "roadm site_b",
+      "to_node": "trx site_b"
+    },
+    {
+      "from_node": "roadm site_a",
+      "to_node": "booster2 site_a"
+    },
+    {
+      "from_node": "booster2 site_a",
+      "to_node": "Span2ab"
+    },
+    {
+      "from_node": "Span2ab",
+      "to_node": "preamp2 site_b"
+    },
+    {
+      "from_node": "preamp2 site_b",
+      "to_node": "roadm site_b"
+    },
+    {
+      "from_node": "roadm site_b",
+      "to_node": "booster1 site_b"
+    },
+    {
+      "from_node": "booster1 site_b",
+      "to_node": "Span1ba"
+    },
+    {
+      "from_node": "Span1ba",
+      "to_node": "preamp1 site_a"
+    },
+    {
+      "from_node": "preamp1 site_a",
+      "to_node": "roadm site_a"
+    },
+    {
+      "from_node": "roadm site_b",
+      "to_node": "booster2 site_b"
+    },
+    {
+      "from_node": "booster2 site_b",
+      "to_node": "Span2ba"
+    },
+    {
+      "from_node": "Span2ba",
+      "to_node": "preamp2 site_a"
+    },
+    {
+      "from_node": "preamp2 site_a",
+      "to_node": "roadm site_a"
+    },
+    {
+      "from_node": "roadm site_a",
+      "to_node": "booster3 site_a"
+    },
+    {
+      "from_node": "booster3 site_a",
+      "to_node": "Span1ac"
+    },
+    {
+      "from_node": "Span1ac",
+      "to_node": "preamp1 site_c"
+    },
+    {
+      "from_node": "preamp1 site_c",
+      "to_node": "roadm site_c"
+    },
+    {
+      "from_node": "roadm site_c",
+      "to_node": "booster1 site_c"
+    },
+    {
+      "from_node": "booster1 site_c",
+      "to_node": "Span1cb"
+    },
+    {
+      "from_node": "Span1cb",
+      "to_node": "preamp3 site_b"
+    },
+    {
+      "from_node": "preamp3 site_b",
+      "to_node": "roadm site_b"
+    },
+    {
+      "from_node": "roadm site_b",
+      "to_node": "booster3 site_b"
+    },
+    {
+      "from_node": "booster3 site_b",
+      "to_node": "Span1bc"
+    },
+    {
+      "from_node": "Span1bc",
+      "to_node": "preamp2 site_c"
+    },
+    {
+      "from_node": "preamp2 site_c",
+      "to_node": "roadm site_c"
+    },
+    {
+      "from_node": "roadm site_c",
+      "to_node": "booster2 site_c"
+    },
+    {
+      "from_node": "booster2 site_c",
+      "to_node": "Span1ca"
+    },
+    {
+      "from_node": "Span1ca",
+      "to_node": "preamp3 site_a"
+    },
+    {
+      "from_node": "preamp3 site_a",
+      "to_node": "roadm site_a"
+    }
+  ]
+}

gnpy/core/elements.py

@@ -118,16 +118,19 @@ class Transceiver(Node):
         self._calc_snr(spectral_info)
         return spectral_info
 
-RoadmParams = namedtuple('RoadmParams', 'target_pch_out_db add_drop_osnr restrictions')
+RoadmParams = namedtuple('RoadmParams', 'target_pch_out_db add_drop_osnr restrictions per_degree_target_pch_out_db')
 
 class Roadm(Node):
     def __init__(self, *args, params, **kwargs):
+        if 'per_degree_target_pch_out_db' not in params.keys():
+            params['per_degree_target_pch_out_db'] = []
         super().__init__(*args, params=RoadmParams(**params), **kwargs)
         self.loss = 0 #auto-design interest
         self.effective_loss = None
         self.effective_pch_out_db = self.params.target_pch_out_db
         self.passive = True
         self.restrictions = self.params.restrictions
+        self.per_degree_target_pch_out_db = self.params.per_degree_target_pch_out_db
 
     @property
     def to_json(self):
@@ -135,7 +138,8 @@ class Roadm(Node):
                 'type'      : type(self).__name__,
                 'params'    : {
                     'target_pch_out_db' : self.effective_pch_out_db,
-                    'restrictions'      : self.restrictions
+                    'restrictions'      : self.restrictions,
+                    'per_degree_target_pch_out_db': self.per_degree_target_pch_out_db
                     },
                 'metadata'      : {
                     'location': self.metadata['location']._asdict()
@@ -150,15 +154,26 @@ class Roadm(Node):
                           f'  effective loss (dB):  {self.effective_loss:.2f}',
                           f'  pch out (dBm):        {self.effective_pch_out_db!r}'])
 
-    def propagate(self, pref, *carriers):
+    def propagate(self, pref, *carriers, degree):
         #pin_target and loss are read from eqpt_config.json['Roadm']
         #all ingress channels in xpress are set to this power level
         #but add channels are not, so we define an effective loss
         #in the case of add channels
-        self.effective_pch_out_db = min(pref.p_spani, self.params.target_pch_out_db)
+        if self.per_degree_target_pch_out_db:
+            # find the target power on this degree
+            try:
+                temp = next(el['target_pch_out_db'] \
+                    for el in self.per_degree_target_pch_out_db if el['to_node']==degree)
+            except StopIteration:
+                # if no target power is defined on this degree use the global one
+                temp = self.params.target_pch_out_db
+        else:
+            # if no per degree target power are defined, use the global one
+            temp = self.params.target_pch_out_db
+        self.effective_pch_out_db = min(pref.p_spani, temp)
         self.effective_loss = pref.p_spani - self.effective_pch_out_db
         carriers_power = array([c.power.signal +c.power.nli+c.power.ase for c in carriers])
-        carriers_att = list(map(lambda x : lin2db(x*1e3)-self.params.target_pch_out_db, carriers_power))
+        carriers_att = list(map(lambda x : lin2db(x*1e3)-self.effective_pch_out_db, carriers_power))
         exceeding_att = -min(list(filter(lambda x: x < 0, carriers_att)), default = 0)
         carriers_att = list(map(lambda x: db2lin(x+exceeding_att), carriers_att))
         for carrier_att, carrier in zip(carriers_att, carriers) :
@@ -171,8 +186,8 @@ class Roadm(Node):
     def update_pref(self, pref):
         return pref._replace(p_span0=pref.p_span0, p_spani=self.effective_pch_out_db)
 
-    def __call__(self, spectral_info):
-        carriers = tuple(self.propagate(spectral_info.pref, *spectral_info.carriers))
+    def __call__(self, spectral_info, degree):
+        carriers = tuple(self.propagate(spectral_info.pref, *spectral_info.carriers, degree=degree))
         pref = self.update_pref(spectral_info.pref)
         return spectral_info._replace(carriers=carriers, pref=pref)
 

gnpy/core/network.py

@@ -233,7 +233,7 @@ def prev_node_generator(network, node):
     except StopIteration:
         raise NetworkTopologyError(f'Node {node.uid} is not properly connected, please check network topology')
     # yield and re-iterate
-    if isinstance(prev_node, Fused) or isinstance(node, Fused):
+    if isinstance(prev_node, Fused) or isinstance(node, Fused) and not isinstance(prev_node, Roadm):
         yield prev_node
         yield from prev_node_generator(network, prev_node)
     else:
@@ -247,7 +247,7 @@ def next_node_generator(network, node):
     except StopIteration:
         raise NetworkTopologyError('Node {node.uid} is not properly connected, please check network topology')
     # yield and re-iterate
-    if isinstance(next_node, Fused) or isinstance(node, Fused):
+    if isinstance(next_node, Fused) or isinstance(node, Fused) and not isinstance(next_node, Roadm):
         yield next_node
         yield from next_node_generator(network, next_node)
     else:
@@ -315,6 +315,17 @@ def set_egress_amplifier(network, roadm, equipment, pref_total_db):
         #     node = find_last_node(next_node)
         #     next_node = next(n for n in network.successors(node))
         #     next_node = find_last_node(next_node)
+        
+        if node.per_degree_target_pch_out_db:
+            # find the target power on this degree
+            try:
+                prev_dp = next(el["target_pch_out_db"] for el in \
+                    node.per_degree_target_pch_out_db if el["to_node"]==next_node.uid)
+            except StopIteration:
+                # if no target power is defined on this degree use the global one
+                prev_dp = getattr(node.params, 'target_pch_out_db', 0)
+        else:
+            # if no per degree target power is given use the global one
             prev_dp = getattr(node.params, 'target_pch_out_db', 0)
         dp = prev_dp
         prev_voa = 0

gnpy/core/request.py

@@ -122,6 +122,15 @@ BLOCKING_NOPATH = ['NO_PATH', 'NO_PATH_WITH_CONSTRAINT',\
 BLOCKING_NOMODE = ['NO_FEASIBLE_MODE', 'MODE_NOT_FEASIBLE']
 BLOCKING_NOSPECTRUM = 'NO_SPECTRUM'
 
+def element_to_node_type(element):
+    if isinstance(element, Transceiver):
+        return "transceiver"
+    if isinstance(element, Edfa):
+        return "EDFA"
+    if isinstance(element, Roadm):
+        return "ROADM"
+    return None
+
 class Result_element(Element):
     def __init__(self, path_request, computed_path, reversed_computed_path=None):
         self.path_id = path_request.request_id
@@ -131,13 +140,13 @@ class Result_element(Element):
         if reversed_computed_path is not None:
             self.reversed_computed_path = reversed_computed_path
     uid = property(lambda self: repr(self))
-    @property
-    def detailed_path_json(self):
+
+    def detailed_path_json(self, path):
         """ a function that builds path object for normal and blocking cases
         """
         index = 0
         pro_list = []
-        for element in self.computed_path:
+        for element in path:
             temp = {
                 'path-route-object': {
                     'index': index,
@@ -148,6 +157,9 @@ class Result_element(Element):
                         }
                     }
                 }
+            node_type = element_to_node_type(element)
+            if (node_type is not None):
+                temp['path-route-object']['num-unnum-hop']['gnpy-node-type'] = node_type
             pro_list.append(temp)
             index += 1
             if self.path_request.M > 0:
@@ -180,6 +192,31 @@ class Result_element(Element):
                     }
                 pro_list.append(temp)
                 index += 1
+            if isinstance(element, Roadm):
+                temp = {
+                    'path-route-object': {
+                        'index': index,
+                        'target-channel-power' : {
+                           'value' : element.effective_pch_out_db,
+                            }
+                        }
+                    }
+                pro_list.append(temp)
+                index += 1
+            if isinstance(element, Edfa):
+                temp = {
+                    'path-route-object': {
+                        'index': index,
+                        'target-channel-power' : {
+                            'value': element.effective_pch_out_db,
+                        },
+                        'output-voa':  {
+                            'value': element.out_voa,
+                        }
+                    }
+                }
+                pro_list.append(temp)
+                index += 1
         return pro_list
     @property
     def path_properties(self):
@@ -218,12 +255,13 @@ class Result_element(Element):
             path_properties = {
                 'path-metric': path_metric(self.computed_path, self.path_request),
                 'z-a-path-metric': path_metric(self.reversed_computed_path, self.path_request),
-                'path-route-objects': self.detailed_path_json
+                'path-route-objects': self.detailed_path_json(self.computed_path),
+                'reversed-path-route-objects': self.detailed_path_json(self.reversed_computed_path),
                 }
         else:
             path_properties = {
                 'path-metric': path_metric(self.computed_path, self.path_request),
-                'path-route-objects': self.detailed_path_json
+                'path-route-objects': self.detailed_path_json(self.computed_path)
                 }
         return path_properties
 
@@ -383,8 +421,13 @@ def propagate(path, req, equipment):
     si = create_input_spectral_information(
         req.f_min, req.f_max, req.roll_off, req.baud_rate,
         req.power, req.spacing)
-    for el in path:
+    for i, el in enumerate(path):
+        if isinstance(el, Roadm):
+            next_el = path[i+1]
+            si = el(si, degree=next_el.uid)
+        else:
             si = el(si)
+        print(el)
     path[-1].update_snr(req.tx_osnr, equipment['Roadm']['default'].add_drop_osnr)
     return path
 
@@ -393,8 +436,12 @@ def propagate2(path, req, equipment):
         req.f_min, req.f_max, req.roll_off, req.baud_rate,
         req.power, req.spacing)
     infos = {}
-    for el in path:
+    for i, el in enumerate(path):
         before_si = si
+        if isinstance(el, Roadm):
+            next_el = path[i+1]
+            after_si  = si = el(si, degree=next_el.uid)
+        else:
             after_si  = si = el(si)
         infos[el] = before_si, after_si
     path[-1].update_snr(req.tx_osnr, equipment['Roadm']['default'].add_drop_osnr)
@@ -424,7 +471,11 @@ def propagate_and_optimize_mode(path, req, equipment):
             spc_info = create_input_spectral_information(req.f_min, req.f_max,
                                                    equipment['SI']['default'].roll_off,
                                                    this_br, req.power, req.spacing)
-            for el in path:
+            for i, el in enumerate(path):
+                if isinstance(el, Roadm):
+                    next_el = path[i+1]
+                    spc_info = el(spc_info, degree=next_el.uid)
+                else:
                     spc_info = el(spc_info)
             for this_mode in modes_to_explore:
                 if path[-1].snr is not None:

path_result_template.json

@@ -59,6 +59,4 @@
           }
         ]
       }
-    }
-  ]
-}
+    },      

requirements.txt

@@ -1,5 +1,7 @@
 alabaster>=0.7.12,<1
 docutils==0.15.2
+flask==1.0.2
+flask-restful==0.3.7
 matplotlib>=3.1.0,<4
 networkx>=2.3,<3
 numpy>=1.16.1,<2

service-template.json

@@ -47,24 +47,25 @@
       "path-constraints": {
         "te-bandwidth": {
           "technology": "flexi-grid",
-          "trx_type": null,
-          "trx_mode": null,
+          "trx_type": "name of the tsp type_variety as listed in the library",
+          "trx_mode": "optional, name of the mode as listed in the tsp type_variety",
           "effective-freq-slot": [
             {
               "n": "null",
               "m": "null"
             }
           ],
-          "spacing": null,
-          "max-nb-of-channel": null,
-          "output-power": null,
-          "path_bandwidth": null
+          "spacing": mandatory decimal Hz,
+          "max-nb-of-channel": optional integer,
+          "output-power": optional decimal W,
+          "path_bandwidth": optional bit/s
         }
       }
-    }],
-  "synchronization": [
+    }
+  ],
+  "synchronization": [   list of disjunctions, optional
     {
-      "synchronization-id": null,
+      "synchronization-id": "3",
       "svec": {
         "relaxable": "True",
         "disjointness": "node link",