pcep/server/server-provider/src/main/java/org/opendaylight/bgpcep/pcep/server/provider/PceServerFactory.java

   1 /*
   2  * Copyright (c) 2020 Orange. 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.bgpcep.pcep.server.provider;
  10
  11 import com.google.common.base.Preconditions;
  12 import org.eclipse.jdt.annotation.Nullable;
  13 import org.opendaylight.algo.PathComputationProvider;
  14 import org.opendaylight.bgpcep.pcep.server.PceServerProvider;
  15 import org.opendaylight.graph.ConnectedGraph;
  16 import org.opendaylight.graph.ConnectedGraphProvider;
  17
  18 public class PceServerFactory implements PceServerProvider {
  19
  20     private final ConnectedGraphProvider graphProvider;
  21     private final PathComputationProvider algoProvider;
  22     private ConnectedGraph tedGraph = null;
  23
  24     public PceServerFactory(ConnectedGraphProvider graphProvider, PathComputationProvider pathComputationProvider) {
  25         Preconditions.checkArgument(graphProvider != null);
  26         this.graphProvider = graphProvider;
  27         this.algoProvider = pathComputationProvider;
  28         setTedGraph();
  29     }
  30
  31     /**
  32      * Set Traffic Engineering Graph. This method is necessary as the TedGraph could be available
  33      * after the PathComputationFactory start e.g. manual insertion of a ted Graph, or late tedGraph fulfillment
  34      * from BGP Link State.
  35      */
  36     private void setTedGraph() {
  37         for (ConnectedGraph cgraph : this.graphProvider.getConnectedGraphs()) {
  38             if (cgraph.getGraph().getName().startsWith("ted://")) {
  39                 this.tedGraph = cgraph;
  40                 break;
  41             }
  42         }
  43     }
  44
  45     @Override
  46     public PathComputationImpl getPathComputation() {
  47         /* Leave a change to get a valid Graph */
  48         if (tedGraph == null) {
  49             setTedGraph();
  50         }
  51         return new PathComputationImpl(tedGraph, algoProvider);
  52     }
  53
  54     @Override
  55     public @Nullable ConnectedGraph getTedGraph() {
  56         /* Leave a change to get a valid Graph in case of late fulfillment */
  57         if (tedGraph == null) {
  58             setTedGraph();
  59         }
  60         return this.tedGraph;
  61     }
  62 }