openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/core/MessageFactory.java

   1 /**
   2  * Copyright (c) 2013 Cisco Systems, 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 package org.opendaylight.openflowplugin.openflow.md.core;
   9
  10 import java.util.ArrayList;
  11 import java.util.List;
  12
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.HelloElementType;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInput;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInputBuilder;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInput;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInputBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.Elements;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.ElementsBuilder;
  20
  21 /**
  22  * @author mirehak
  23  *
  24  */
  25 public abstract class MessageFactory {
  26
  27     /**
  28      * @param helloVersion
  29      * @param helloXid
  30      * @return HelloInput without elements
  31      */
  32     public static HelloInput createHelloInput(short helloVersion, long helloXid) {
  33         return createHelloInput(helloVersion, helloXid, null);
  34     }
  35
  36     /**
  37      * @param highestVersion
  38      * @param xid
  39      * @return builder with prepared header
  40      */
  41     private static HelloInputBuilder prepareHelloInputBuilder(
  42             short highestVersion, long xid) {
  43         HelloInputBuilder helloInputbuilder = new HelloInputBuilder();
  44         helloInputbuilder.setVersion(highestVersion);
  45         helloInputbuilder.setXid(xid);
  46         return helloInputbuilder;
  47     }
  48
  49     /**
  50      * @param helloVersion
  51      * @param helloXid
  52      * @param versionOrder
  53      * @return HelloInput with elements (version bitmap)
  54      */
  55     public static HelloInput createHelloInput(short helloVersion, long helloXid, List<Short> versionOrder) {
  56         HelloInputBuilder helloInputbuilder = prepareHelloInputBuilder(helloVersion, helloXid);
  57         if (versionOrder != null) {
  58             List<Elements> elementList = new ArrayList<>();
  59
  60             ElementsBuilder elementsBuilder = new ElementsBuilder();
  61             elementsBuilder.setType(HelloElementType.VERSIONBITMAP);
  62             List<Boolean> booleanList = new ArrayList<>();
  63
  64             int versionOrderIndex = versionOrder.size() - 1;
  65
  66             while (versionOrderIndex >= 0) {
  67                 short version = versionOrder.get(versionOrderIndex);
  68                 if (version == booleanList.size()) {
  69                     booleanList.add(true);
  70                     versionOrderIndex--;
  71                 } else {
  72                     booleanList.add(false);
  73                 }
  74             }
  75
  76             elementsBuilder.setVersionBitmap(booleanList);
  77             elementList.add(elementsBuilder.build());
  78             helloInputbuilder.setElements(elementList);
  79         }
  80         return helloInputbuilder.build();
  81     }
  82
  83     /**
  84      * @param elements
  85      * @return version boolean list
  86      */
  87     public static List<Boolean> digVersions(List<Elements> elements) {
  88         List<Boolean> result = null;
  89         if (elements != null && !elements.isEmpty()) {
  90             for (Elements elm : elements) {
  91                 if (HelloElementType.VERSIONBITMAP.equals(elm.getType())) {
  92                     result = elm.getVersionBitmap();
  93                 }
  94             }
  95         }
  96         return result;
  97     }
  98
  99     /**
 100      * @param ofVersion
 101      * @param ofXid
 102      * @return barrier message
 103      */
 104     public static BarrierInput createBarrier(short ofVersion, long ofXid) {
 105         BarrierInputBuilder barrierInput = new BarrierInputBuilder();
 106         barrierInput.setVersion(ofVersion);
 107         barrierInput.setXid(ofXid);
 108         return barrierInput.build();
 109     }
 110
 111 //    /**
 112 //     * @param input
 113 //     * @param cookie
 114 //     * @param session
 115 //     * @param messageService
 116 //     * @return barrier result
 117 //     */
 118 //    public static Future<RpcResult<BarrierOutput>> sendBarrier(
 119 //            SwitchConnectionDistinguisher cookie, SessionContext session,
 120 //            IMessageDispatchService messageService) {
 121 //        BarrierInputBuilder barrierInput = new BarrierInputBuilder();
 122 //        barrierInput.setVersion(session.getFeatures().getVersion());
 123 //        barrierInput.setXid(session.getNextXid());
 124 //        return messageService.barrier(barrierInput.build(), cookie);
 125 //    }
 126 }