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.ArrayList;
  12 import java.util.List;
  13 import java.util.stream.Collectors;
  14 import org.opendaylight.transportpce.common.network.NetworkTransactionService;
  15 import org.opendaylight.transportpce.pce.constraints.PceConstraints;
  16 import org.opendaylight.transportpce.pce.gnpy.consumer.GnpyConsumer;
  17 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev220221.RequestBuilder;
  18 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev220221.request.ServiceBuilder;
  19 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev220221.request.TopologyBuilder;
  20 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev220221.topo.Connections;
  21 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev220221.topo.Elements;
  22 import org.opendaylight.yang.gen.v1.gnpy.path.rev220221.Result;
  23 import org.opendaylight.yang.gen.v1.gnpy.path.rev220221.generic.path.properties.path.properties.PathRouteObjects;
  24 import org.opendaylight.yang.gen.v1.gnpy.path.rev220221.service.PathRequest;
  25 import org.opendaylight.yang.gen.v1.gnpy.path.rev220221.synchronization.info.Synchronization;
  26 import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev220118.PathComputationRequestInput;
  27 import org.opendaylight.yang.gen.v1.http.org.openroadm.routing.constrains.rev190329.routing.constraints.HardConstraints;
  28 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.AToZDirection;
  29 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.AToZDirectionBuilder;
  30 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev210705.path.description.ZToADirection;
  31 import org.opendaylight.yangtools.yang.common.Uint32;
  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 PathComputationRequestInput input;
  43     private GnpyTopoImpl gnpyTopo = null;
  44     private GnpyResult gnpyAtoZ;
  45     private GnpyResult gnpyZtoA;
  46     private Uint32 requestId;
  47     private final GnpyConsumer gnpyConsumer;
  48
  49     public GnpyUtilitiesImpl(NetworkTransactionService networkTransaction, PathComputationRequestInput input,
  50             GnpyConsumer gnpyConsumer)
  51         throws GnpyException {
  52         this.gnpyTopo = new GnpyTopoImpl(networkTransaction);
  53         this.input = input;
  54         this.gnpyAtoZ = null;
  55         this.gnpyZtoA = null;
  56         this.requestId = Uint32.valueOf(0);
  57         this.gnpyConsumer = gnpyConsumer;
  58     }
  59
  60     public boolean verifyComputationByGnpy(AToZDirection atoz, ZToADirection ztoa, PceConstraints pceHardConstraints)
  61         throws GnpyException {
  62
  63         if (atoz == null || atoz.getAToZ() == null || ztoa == null || ztoa.getZToA() == null) {
  64             throw new GnpyException("In GnpyUtilities: the path transmitted to Gnpy is null");
  65         }
  66
  67         GnpyServiceImpl gnpySvc1 = new GnpyServiceImpl(input, atoz, requestId, gnpyTopo, pceHardConstraints);
  68         this.gnpyAtoZ = gnpyResponseOneDirection(gnpySvc1);
  69         boolean isPcePathFeasible = false;
  70         isPcePathFeasible = this.gnpyAtoZ.getPathFeasibility();
  71         GnpyServiceImpl gnpySvc2 = new GnpyServiceImpl(input, ztoa, requestId, gnpyTopo, pceHardConstraints);
  72         this.gnpyZtoA = gnpyResponseOneDirection(gnpySvc2);
  73         isPcePathFeasible &= this.gnpyZtoA.getPathFeasibility();
  74         return isPcePathFeasible;
  75     }
  76
  77     public GnpyResult gnpyResponseOneDirection(GnpyServiceImpl gnpySvc) throws GnpyException {
  78         requestId = Uint32.valueOf((requestId.toJava()) + 1);
  79         List<PathRequest> pathRequestList = new ArrayList<>(gnpySvc.getPathRequest().values());
  80         List<Synchronization> synchronizationList = gnpySvc.getSynchronization();
  81         // Send the computed path to GNPY tool
  82         List<Elements> elementsList = new ArrayList<>(gnpyTopo.getElements().values());
  83         List<Connections> connectionsList = gnpyTopo.getConnections();
  84         Result gnpyResponse = getGnpyResponse(elementsList, connectionsList, pathRequestList,
  85                 synchronizationList);
  86         // Analyze the response
  87         if (gnpyResponse == null) {
  88             throw new GnpyException("In GnpyUtilities: no response from GNPy server");
  89         }
  90         GnpyResult result = new GnpyResult(gnpyResponse, gnpyTopo);
  91         result.analyzeResult();
  92         return result;
  93     }
  94
  95     public HardConstraints askNewPathFromGnpy(PceConstraints pceHardConstraints)
  96             throws GnpyException {
  97
  98         AToZDirection atoztmp = new AToZDirectionBuilder()
  99             .setRate(input.getServiceAEnd().getServiceRate())
 100             .build();
 101         GnpyServiceImpl gnpySvc = new GnpyServiceImpl(input, atoztmp, requestId, gnpyTopo, pceHardConstraints);
 102         GnpyResult result = gnpyResponseOneDirection(gnpySvc);
 103
 104         if (result == null) {
 105             throw new GnpyException("In GnpyUtilities: no result from the GNPy server");
 106         }
 107
 108         if (!result.getPathFeasibility()) {
 109             return null;
 110         }
 111         List<PathRouteObjects> pathRouteObjectList = result.analyzeResult();
 112         return result.computeHardConstraintsFromGnpyPath(pathRouteObjectList);
 113     }
 114
 115     public Result getGnpyResponse(List<Elements> elementsList, List<Connections> connectionsList,
 116             List<PathRequest> pathRequestList, List<Synchronization> synchronizationList) {
 117
 118         return gnpyConsumer.computePaths(new RequestBuilder()
 119             .setTopology(
 120                 new TopologyBuilder()
 121                 .setElements(elementsList.stream().collect(Collectors.toMap(Elements::key, element -> element)))
 122                 .setConnections(connectionsList).build())
 123             .setService(
 124                 new ServiceBuilder()
 125                 .setPathRequest(pathRequestList.stream()
 126                         .collect(Collectors.toMap(PathRequest::key, pathRequest -> pathRequest)))
 127                 .build())
 128             .build());
 129     }
 130
 131     public GnpyResult getGnpyAtoZ() {
 132         return gnpyAtoZ;
 133     }
 134
 135     public GnpyResult getGnpyZtoA() {
 136         return gnpyZtoA;
 137     }
 138 }