2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.openflowplugin.impl.util;
10 import java.util.ArrayList;
11 import java.util.Collections;
12 import java.util.List;
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.HelloInput;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.HelloInputBuilder;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.Elements;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.hello.ElementsBuilder;
19 public abstract class MessageFactory {
22 * @param helloVersion openflow version for hello message to send to switch
23 * @param helloXid transaction id for hello message
24 * @return HelloInput without elements
26 public static HelloInput createHelloInput(short helloVersion, long helloXid) {
27 return createHelloInput(helloVersion, helloXid, null);
31 * @param highestVersion highest openflow version
32 * @param xid transaction id
33 * @return builder with prepared header
35 private static HelloInputBuilder prepareHelloInputBuilder(
36 short highestVersion, long xid) {
37 HelloInputBuilder helloInputbuilder = new HelloInputBuilder();
38 helloInputbuilder.setVersion(highestVersion);
39 helloInputbuilder.setXid(xid);
40 return helloInputbuilder;
44 * @param helloVersion openflow version for hello message to send to switch
45 * @param helloXid transaction id for hello message
46 * @param versionOrder list of openflow version in order
47 * @return HelloInput with elements (version bitmap)
49 public static HelloInput createHelloInput(short helloVersion, long helloXid, List<Short> versionOrder) {
50 HelloInputBuilder helloInputbuilder = prepareHelloInputBuilder(helloVersion, helloXid);
51 if (versionOrder != null) {
53 ElementsBuilder elementsBuilder = new ElementsBuilder();
54 elementsBuilder.setType(HelloElementType.VERSIONBITMAP);
55 int resultVersionListSize = 0;
56 if (!versionOrder.isEmpty()) {
57 resultVersionListSize = versionOrder.get(0) + 1;
59 List<Boolean> booleanList = new ArrayList<>(resultVersionListSize);
61 int versionOrderIndex = versionOrder.size() - 1;
63 while (versionOrderIndex >= 0) {
64 short version = versionOrder.get(versionOrderIndex);
65 if (version == booleanList.size()) {
66 booleanList.add(true);
69 booleanList.add(false);
73 elementsBuilder.setVersionBitmap(booleanList);
75 List<Elements> elementList = Collections.singletonList(elementsBuilder.build());
76 helloInputbuilder.setElements(elementList);
78 return helloInputbuilder.build();
82 * @param elements list of versions
83 * @return version boolean list
85 public static List<Boolean> digVersions(List<Elements> elements) {
86 List<Boolean> result = null;
87 if (elements != null && !elements.isEmpty()) {
88 for (Elements elm : elements) {
89 if (HelloElementType.VERSIONBITMAP.equals(elm.getType())) {
90 result = elm.getVersionBitmap();