pce/src/main/java/org/opendaylight/transportpce/pce/graph/InAlgoPathValidator.java

   1 /*
   2  * Copyright © 2017 AT&T, 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.graph;
  10
  11 import org.jgrapht.GraphPath;
  12 import org.jgrapht.alg.shortestpath.PathValidator;
  13 import org.opendaylight.yang.gen.v1.http.org.openroadm.network.types.rev230526.OpenroadmLinkType;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 public class InAlgoPathValidator implements PathValidator<String, PceGraphEdge> {
  18     /* Logging. */
  19     private static final Logger LOG = LoggerFactory.getLogger(InAlgoPathValidator.class);
  20     private static final String IN_CHECK_PATH_DROPPED_MSG = "in checkPath dropped {} {} ";
  21
  22     public InAlgoPathValidator() {
  23         super();
  24     }
  25
  26     @Override
  27     public boolean isValidPath(GraphPath<String, PceGraphEdge> partialPath, PceGraphEdge edge) {
  28         int size = partialPath.getEdgeList().size();
  29         if (size == 0) {
  30             return true;
  31         }
  32         LOG.debug("InAlgoPathValidator: partialPath size: {} prev edge {} new edge {}",
  33             size, edge.link().getlinkType(), partialPath.getEdgeList().get(size - 1).link().getlinkType());
  34
  35         return (checkTurn(partialPath.getEdgeList().get(size - 1).link().getlinkType(), edge.link().getlinkType()));
  36     }
  37
  38     @SuppressWarnings("java:S1541")
  39     //sonar issue The Cyclomatic Complexity of this method "checkTurn" is 13 which is greater than 10 authorized.
  40     //here we have clear conditional, so for the moment no need to manage this issue
  41     private boolean checkTurn(OpenroadmLinkType prevType, OpenroadmLinkType nextType) {
  42
  43         if (nextType == OpenroadmLinkType.ADDLINK && prevType != OpenroadmLinkType.XPONDEROUTPUT) {
  44             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  45             return false;
  46         }
  47
  48         if (nextType == OpenroadmLinkType.EXPRESSLINK && prevType != OpenroadmLinkType.ROADMTOROADM) {
  49             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  50             return false;
  51         }
  52
  53         if (nextType == OpenroadmLinkType.DROPLINK && prevType != OpenroadmLinkType.ROADMTOROADM) {
  54             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  55             return false;
  56         }
  57
  58         if (nextType == OpenroadmLinkType.XPONDERINPUT && prevType != OpenroadmLinkType.DROPLINK) {
  59             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  60             return false;
  61         }
  62
  63         if (prevType == OpenroadmLinkType.EXPRESSLINK && nextType != OpenroadmLinkType.ROADMTOROADM) {
  64             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  65             return false;
  66         }
  67
  68         if (prevType == OpenroadmLinkType.ADDLINK && nextType != OpenroadmLinkType.ROADMTOROADM) {
  69             LOG.debug(IN_CHECK_PATH_DROPPED_MSG, prevType, nextType);
  70             return false;
  71         }
  72
  73         return true;
  74     }
  75 }
  76