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.rev190103.GnpyApi;
  18 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.GnpyApiBuilder;
  19 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.gnpy.api.ServiceFileBuilder;
  20 import org.opendaylight.yang.gen.v1.gnpy.gnpy.api.rev190103.gnpy.api.TopologyFileBuilder;
  21 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev181214.topo.Connections;
  22 import org.opendaylight.yang.gen.v1.gnpy.gnpy.network.topology.rev181214.topo.Elements;
  23 import org.opendaylight.yang.gen.v1.gnpy.path.rev200909.Result;
  24 import org.opendaylight.yang.gen.v1.gnpy.path.rev200909.generic.path.properties.path.properties.PathRouteObjects;
  25 import org.opendaylight.yang.gen.v1.gnpy.path.rev200909.service.PathRequest;
  26 import org.opendaylight.yang.gen.v1.gnpy.path.rev200909.synchronization.info.Synchronization;
  27 import org.opendaylight.yang.gen.v1.http.org.opendaylight.transportpce.pce.rev200128.PathComputationRequestInput;
  28 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev201210.path.description.AToZDirection;
  29 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev201210.path.description.AToZDirectionBuilder;
  30 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.pathdescription.rev201210.path.description.ZToADirection;
  31 import org.opendaylight.yang.gen.v1.http.org.transportpce.b.c._interface.routing.constraints.rev171017.routing.constraints.sp.HardConstraints;
  32 import org.opendaylight.yangtools.yang.common.Uint32;
  33
  34 /**
  35  * Class that implements the functions asked to gnpy.
  36  *
  37  * @author Ahmed Triki ( ahmed.triki@orange.com )
  38  *
  39  */
  40
  41 public class GnpyUtilitiesImpl {
  42
  43     private PathComputationRequestInput input;
  44     private GnpyTopoImpl gnpyTopo = null;
  45     private GnpyResult gnpyAtoZ;
  46     private GnpyResult gnpyZtoA;
  47     private Uint32 requestId;
  48     private final GnpyConsumer gnpyConsumer;
  49
  50     public GnpyUtilitiesImpl(NetworkTransactionService networkTransaction, PathComputationRequestInput input,
  51             GnpyConsumer gnpyConsumer)
  52         throws GnpyException {
  53         this.gnpyTopo = new GnpyTopoImpl(networkTransaction);
  54         this.input = input;
  55         this.gnpyAtoZ = null;
  56         this.gnpyZtoA = null;
  57         this.requestId = Uint32.valueOf(0);
  58         this.gnpyConsumer = gnpyConsumer;
  59     }
  60
  61     public boolean verifyComputationByGnpy(AToZDirection atoz, ZToADirection ztoa, PceConstraints pceHardConstraints)
  62         throws GnpyException {
  63
  64         if (atoz == null || atoz.getAToZ() == null || ztoa == null || ztoa.getZToA() == null) {
  65             throw new GnpyException("In GnpyUtilities: the path transmitted to Gnpy is null");
  66         }
  67
  68         GnpyServiceImpl gnpySvc1 = new GnpyServiceImpl(input, atoz, requestId, gnpyTopo, pceHardConstraints);
  69         this.gnpyAtoZ = gnpyResponseOneDirection(gnpySvc1);
  70         boolean isPcePathFeasible = false;
  71         isPcePathFeasible = this.gnpyAtoZ.getPathFeasibility();
  72         GnpyServiceImpl gnpySvc2 = new GnpyServiceImpl(input, ztoa, requestId, gnpyTopo, pceHardConstraints);
  73         this.gnpyZtoA = gnpyResponseOneDirection(gnpySvc2);
  74         isPcePathFeasible &= this.gnpyZtoA.getPathFeasibility();
  75         return isPcePathFeasible;
  76     }
  77
  78     @SuppressWarnings("checkstyle:illegalcatch")
  79     public GnpyResult gnpyResponseOneDirection(GnpyServiceImpl gnpySvc) throws GnpyException {
  80         requestId = Uint32.valueOf((requestId.toJava()) + 1);
  81         List<PathRequest> pathRequestList = new ArrayList<>(gnpySvc.getPathRequest().values());
  82         List<Synchronization> synchronizationList = gnpySvc.getSynchronization();
  83         // Send the computed path to GNPY tool
  84         List<Elements> elementsList = new ArrayList<>(gnpyTopo.getElements().values());
  85         List<Connections> connectionsList = gnpyTopo.getConnections();
  86         Result gnpyResponse = getGnpyResponse(elementsList, connectionsList, pathRequestList,
  87                 synchronizationList);
  88         // Analyze the response
  89         if (gnpyResponse == null) {
  90             throw new GnpyException("In GnpyUtilities: no response from GNPy server");
  91         }
  92         GnpyResult result = new GnpyResult(gnpyResponse, gnpyTopo);
  93         result.analyzeResult();
  94         return result;
  95     }
  96
  97     public HardConstraints askNewPathFromGnpy(PceConstraints pceHardConstraints)
  98             throws GnpyException {
  99
 100         AToZDirection atoztmp = new AToZDirectionBuilder()
 101             .setRate(input.getServiceAEnd().getServiceRate())
 102             .build();
 103         GnpyServiceImpl gnpySvc = new GnpyServiceImpl(input, atoztmp, requestId, gnpyTopo, pceHardConstraints);
 104         GnpyResult result = gnpyResponseOneDirection(gnpySvc);
 105
 106         if (result == null) {
 107             throw new GnpyException("In GnpyUtilities: no result from the GNPy server");
 108         }
 109
 110         if (!result.getPathFeasibility()) {
 111             return null;
 112         }
 113         List<PathRouteObjects> pathRouteObjectList = result.analyzeResult();
 114         return result.computeHardConstraintsFromGnpyPath(pathRouteObjectList);
 115     }
 116
 117     public Result getGnpyResponse(List<Elements> elementsList, List<Connections> connectionsList,
 118         List<PathRequest> pathRequestList, List<Synchronization> synchronizationList) {
 119         GnpyApi gnpyApi = new GnpyApiBuilder()
 120             .setTopologyFile(
 121                 new TopologyFileBuilder()
 122                 .setElements(elementsList.stream().collect(Collectors.toMap(Elements::key, element -> element)))
 123                 .setConnections(connectionsList).build())
 124             .setServiceFile(
 125                 new ServiceFileBuilder()
 126                 .setPathRequest(pathRequestList.stream()
 127                         .collect(Collectors.toMap(PathRequest::key, pathRequest -> pathRequest)))
 128                 .build())
 129             .build();
 130         return gnpyConsumer.computePaths(gnpyApi);
 131     }
 132
 133     public GnpyResult getGnpyAtoZ() {
 134         return gnpyAtoZ;
 135     }
 136
 137     public GnpyResult getGnpyZtoA() {
 138         return gnpyZtoA;
 139     }
 140 }