pce/src/main/java/org/opendaylight/transportpce/pce/gnpy/GnpyUtilitiesImpl.java

   1 /*
   2  * Copyright © 2018 Orange, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.transportpce.pce.gnpy;
  10
  11 import java.util.List;
  12
  13 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  14 import org.opendaylight.transportpce.pce.constraints.PceConstraints;
  15 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.GnpyApi;
  16 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.GnpyApiBuilder;
  17 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.gnpy.api.ServiceFileBuilder;
  18 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.gnpy.api.TopologyFileBuilder;
  19 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev181214.topo.Connections;
  20 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev181214.topo.Elements;
  21 import org.opendaylight.yang.gen.v1.gnpy.path.rev190502.generic.path.properties.path.properties.PathRouteObjects;
  22 import org.opendaylight.yang.gen.v1.gnpy.path.rev190502.service.PathRequest;
  23 import org.opendaylight.yang.gen.v1.gnpy.path.rev190502.synchronization.info.Synchronization;
  24 import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev190624.PathComputationRequestInput;
  25 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev171017.path.description.AToZDirection;
  26 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev171017.path.description.AToZDirectionBuilder;
  27 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev171017.path.description.ZToADirection;
  28 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.routing.constraints.rev171017.routing.constraints.sp.HardConstraints;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * Class that implements the functions asked to gnpy.
  35  *
  36  * @author Ahmed Triki ( ahmed.triki@orange.com )
  37  *
  38  */
  39
  40 public class GnpyUtilitiesImpl {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(GnpyResult.class);
  43     private NetworkTransactionService networkTransaction;
  44     private PathComputationRequestInput input;
  45     private GnpyTopoImpl gnpyTopo = null;
  46     private GnpyResult gnpyAtoZ;
  47     private GnpyResult gnpyZtoA;
  48     private Long requestId;
  49
  50     public GnpyUtilitiesImpl(NetworkTransactionService networkTransaction, PathComputationRequestInput input) {
  51         this.networkTransaction = networkTransaction;
  52         this.gnpyTopo = new GnpyTopoImpl(networkTransaction);
  53         this.input = input;
  54         this.gnpyAtoZ = null;
  55         this.gnpyZtoA = null;
  56         this.requestId = (long) 0;
  57     }
  58
  59     public boolean verifyComputationByGnpy(AToZDirection atoz, ZToADirection ztoa, PceConstraints pceHardConstraints)
  60         throws Exception {
  61         boolean isPcePathFeasible = false;
  62         List<Elements> elementsList = gnpyTopo.getElements();
  63         List<Connections> connectionsList = gnpyTopo.getConnections();
  64
  65         if (atoz == null || atoz.getAToZ() == null) {
  66             LOG.error("In pceSendingPceRPC: empty atoz path");
  67         } else {
  68             GnpyServiceImpl gnpySvc = new GnpyServiceImpl(input, atoz, requestId, gnpyTopo, pceHardConstraints);
  69             requestId++;
  70             List<PathRequest> pathRequestList1 = gnpySvc.getPathRequest();
  71             List<Synchronization> synchronizationList1 = gnpySvc.getSynchronization();
  72             // Send the computed path A-to-Z to GNPY tool
  73             String gnpyResponse1 = getGnpyResponse(elementsList, connectionsList, pathRequestList1,
  74                 synchronizationList1);
  75             // Analyze the response
  76             if (gnpyResponse1 != null) {
  77                 GnpyResult result = new GnpyResult(gnpyResponse1, gnpyTopo);
  78                 result.analyzeResult();
  79                 this.gnpyAtoZ = result;
  80                 isPcePathFeasible = this.gnpyAtoZ.getPathFeasibility();
  81             } else {
  82                 LOG.error("No response from the GNPy server");
  83             }
  84         }
  85
  86         if (ztoa == null || ztoa.getZToA() == null) {
  87             LOG.error("In pceSendingPceRPC: empty ztoa path");
  88             isPcePathFeasible = false;
  89         } else {
  90             GnpyServiceImpl gnpySvc = new GnpyServiceImpl(input, ztoa, requestId, gnpyTopo, pceHardConstraints);
  91             requestId++;
  92             List<PathRequest> pathRequestList2 = gnpySvc.getPathRequest();
  93             List<Synchronization> synchronizationList2 = gnpySvc.getSynchronization();
  94             // Send the computed path Z-to-A to GNPY tool
  95             String gnpyResponse2 = getGnpyResponse(elementsList, connectionsList, pathRequestList2,
  96                 synchronizationList2);
  97             // Analyze the response
  98             if (gnpyResponse2 != null) {
  99                 GnpyResult result = new GnpyResult(gnpyResponse2, gnpyTopo);
 100                 result.analyzeResult();
 101                 this.gnpyZtoA = result;
 102                 isPcePathFeasible &= this.gnpyZtoA.getPathFeasibility();
 103             } else {
 104                 LOG.error("No response from the GNPy server");
 105             }
 106         }
 107         return isPcePathFeasible;
 108     }
 109
 110     public HardConstraints askNewPathFromGnpy(AToZDirection atoz, ZToADirection ztoa,
 111         HardConstraints gnpyPathAsHC, PceConstraints pceHardConstraints) throws Exception {
 112         boolean isPcePathFeasible = false;
 113         List<Elements> elementsList = gnpyTopo.getElements();
 114         List<Connections> connectionsList = gnpyTopo.getConnections();
 115
 116         // Ask a new path A-to-Z
 117         if (atoz.getAToZWavelengthNumber() == null) {
 118             LOG.info("The wavelength is null!");
 119         }
 120
 121         AToZDirection atoztmp = new AToZDirectionBuilder().setRate(atoz.getRate())
 122             .setAToZ(null).build();
 123         GnpyServiceImpl gnpySvc = new GnpyServiceImpl(input, atoztmp, requestId, gnpyTopo, pceHardConstraints);
 124         requestId++;
 125         List<PathRequest> pathRequestList1 = gnpySvc.getPathRequest();
 126         List<Synchronization> synchronizationList1 = gnpySvc.getSynchronization();
 127
 128         // Send the computed path A-to-Z to GNPY tool
 129         String gnpyResponse1 = getGnpyResponse(elementsList, connectionsList, pathRequestList1, synchronizationList1);
 130         // Analyze the response
 131         if (gnpyResponse1 != null) {
 132             GnpyResult result = new GnpyResult(gnpyResponse1, gnpyTopo);
 133             LOG.debug("GNPy result created");
 134             isPcePathFeasible = result.getPathFeasibility();
 135             this.gnpyAtoZ = result;
 136             if (isPcePathFeasible) {
 137                 List<PathRouteObjects> pathRouteObjectList = result.analyzeResult();
 138                 gnpyPathAsHC = result.computeHardConstraintsFromGnpyPath(pathRouteObjectList);
 139             }
 140         } else {
 141             LOG.error("No response from the GNPy server");
 142         }
 143         return gnpyPathAsHC;
 144     }
 145
 146     public String getGnpyResponse(List<Elements> elementsList, List<Connections> connectionsList,
 147         List<PathRequest> pathRequestList, List<Synchronization> synchronizationList) throws Exception {
 148         GnpyApi gnpyApi = new GnpyApiBuilder()
 149             .setTopologyFile(
 150                 new TopologyFileBuilder().setElements(elementsList).setConnections(connectionsList).build())
 151             .setServiceFile(new ServiceFileBuilder().setPathRequest(pathRequestList).build()).build();
 152         InstanceIdentifier<GnpyApi> idGnpyApi = InstanceIdentifier.builder(GnpyApi.class).build();
 153         String gnpyJson;
 154         ServiceDataStoreOperationsImpl sd = new ServiceDataStoreOperationsImpl(networkTransaction);
 155         gnpyJson = sd.createJsonStringFromDataObject(idGnpyApi, gnpyApi);
 156         LOG.debug("GNPy Id: {} / json created : {}", idGnpyApi, gnpyJson);
 157         ConnectToGnpyServer connect = new ConnectToGnpyServer();
 158         String gnpyJsonModified = gnpyJson.replace("gnpy-eqpt-config:", "")
 159             .replace("gnpy-path-computation-simplified:", "").replace("gnpy-network-topology:", "");
 160         String gnpyResponse = connect.gnpyCnx(gnpyJsonModified);
 161         return gnpyResponse;
 162     }
 163
 164     public GnpyResult getGnpyAtoZ() {
 165         return gnpyAtoZ;
 166     }
 167
 168     public GnpyResult getGnpyZtoA() {
 169         return gnpyZtoA;
 170     }
 171 }