openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/lldp/LLDPSpeaker.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.lldp;
   9
  10 import java.math.BigInteger;
  11 import java.util.Collections;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.Timer;
  15 import java.util.TimerTask;
  16 import java.util.concurrent.ConcurrentHashMap;
  17 import org.opendaylight.controller.liblldp.EtherTypes;
  18 import org.opendaylight.controller.liblldp.Ethernet;
  19 import org.opendaylight.controller.liblldp.HexEncode;
  20 import org.opendaylight.controller.liblldp.LLDP;
  21 import org.opendaylight.controller.liblldp.LLDPTLV;
  22 import org.opendaylight.controller.liblldp.PacketException;
  23 import org.opendaylight.openflowplugin.api.openflow.md.util.OpenflowVersion;
  24 import org.opendaylight.openflowplugin.openflow.md.ModelDrivenSwitch;
  25 import org.opendaylight.openflowplugin.openflow.md.util.InventoryDataServiceUtil;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNodeConnector;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorId;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeConnectorRef;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.node.NodeConnector;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInput;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.packet.service.rev130709.TransmitPacketInputBuilder;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41
  42 public class LLDPSpeaker {
  43     private static Logger LOG = LoggerFactory.getLogger(LLDPSpeaker.class);
  44
  45     private final Map<InstanceIdentifier<NodeConnector>, TransmitPacketInput> nodeConnectorMap = new ConcurrentHashMap<InstanceIdentifier<NodeConnector>, TransmitPacketInput>();
  46     private final Map<InstanceIdentifier<Node>, ModelDrivenSwitch> nodeMap = new ConcurrentHashMap<InstanceIdentifier<Node>, ModelDrivenSwitch>();
  47     private static final LLDPSpeaker instance = new LLDPSpeaker();
  48     private Timer timer = new Timer();
  49     private static final int DELAY = 0;
  50     private static final int PERIOD = 1000 * 5;
  51
  52     private LLDPSpeaker() {
  53         timer.schedule(new LLDPSpeakerTask(), DELAY, PERIOD);
  54     }
  55
  56     public static LLDPSpeaker getInstance() {
  57         return instance;
  58     }
  59
  60     public void addModelDrivenSwitch(InstanceIdentifier<Node> nodeInstanceId, ModelDrivenSwitch sw) {
  61         nodeMap.put(nodeInstanceId, sw);
  62     }
  63
  64     public void removeModelDrivenSwitch(InstanceIdentifier<Node> nodeInstanceId) {
  65         nodeMap.remove(nodeInstanceId);
  66         for (InstanceIdentifier<NodeConnector> nodeConnectorInstanceId : nodeConnectorMap.keySet()) {
  67             if (nodeInstanceId.equals(nodeConnectorInstanceId.firstIdentifierOf(Node.class))) {
  68                 nodeConnectorMap.remove(nodeConnectorInstanceId);
  69             }
  70         }
  71     }
  72
  73     public void addNodeConnector(InstanceIdentifier<NodeConnector> nodeConnectorInstanceId, NodeConnector nodeConnector) {
  74         InstanceIdentifier<Node> nodeInstanceId = nodeConnectorInstanceId.firstIdentifierOf(Node.class);
  75         ModelDrivenSwitch md = nodeMap.get(nodeInstanceId);
  76
  77         NodeKey nodeKey = InstanceIdentifier.keyOf(nodeInstanceId);
  78         NodeId nodeId = nodeKey.getId();
  79         NodeConnectorId nodeConnectorId = nodeConnector.getId();
  80         FlowCapableNodeConnector flowConnector = nodeConnector.<FlowCapableNodeConnector>getAugmentation(FlowCapableNodeConnector.class);
  81         TransmitPacketInputBuilder tpib = new TransmitPacketInputBuilder();
  82         tpib.setEgress(new NodeConnectorRef(nodeConnectorInstanceId));
  83         tpib.setNode(new NodeRef(nodeInstanceId));
  84         tpib.setPayload(lldpDataFrom(nodeInstanceId, nodeConnectorInstanceId, flowConnector.getHardwareAddress(),
  85                 md.getSessionContext().getPrimaryConductor().getVersion()));
  86         nodeConnectorMap.put(nodeConnectorInstanceId, tpib.build());
  87
  88         md.transmitPacket(nodeConnectorMap.get(nodeConnectorInstanceId));
  89     }
  90
  91     public void removeNodeConnector(
  92             InstanceIdentifier<NodeConnector> nodeConnectorInstanceId,
  93             NodeConnector nodeConnector) {
  94         nodeConnectorMap.remove(nodeConnectorInstanceId);
  95     }
  96
  97     private byte[] lldpDataFrom(InstanceIdentifier<Node> nodeInstanceId, InstanceIdentifier<NodeConnector> nodeConnectorInstanceId, MacAddress src,
  98                                 Short version) {
  99
 100         NodeId nodeId = InstanceIdentifier.keyOf(nodeInstanceId).getId();
 101         NodeConnectorId nodeConnectorId = InstanceIdentifier.keyOf(nodeConnectorInstanceId).getId();
 102         // Create LLDP TTL TLV
 103         byte[] ttl = new byte[]{(byte) 0, (byte) 120};
 104         LLDPTLV ttlTlv = new LLDPTLV();
 105         ttlTlv.setType(LLDPTLV.TLVType.TTL.getValue()).setLength((short) ttl.length).setValue(ttl);
 106
 107         // Create LLDP ChassisID TLV
 108         BigInteger dataPathId = InventoryDataServiceUtil.dataPathIdFromNodeId(nodeId);
 109         byte[] cidValue = LLDPTLV.createChassisIDTLVValue(
 110                 colonize(InventoryDataServiceUtil.bigIntegerToPaddedHex(dataPathId)));
 111         LLDPTLV chassisIdTlv = new LLDPTLV();
 112         chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue());
 113         chassisIdTlv.setType(LLDPTLV.TLVType.ChassisID.getValue()).setLength((short) cidValue.length)
 114                 .setValue(cidValue);
 115
 116         // Create LLDP SystemName TLV
 117         byte[] snValue = LLDPTLV.createSystemNameTLVValue(nodeId.getValue());
 118         LLDPTLV systemNameTlv = new LLDPTLV();
 119         systemNameTlv.setType(LLDPTLV.TLVType.SystemName.getValue());
 120         systemNameTlv.setType(LLDPTLV.TLVType.SystemName.getValue()).setLength((short) snValue.length)
 121                 .setValue(snValue);
 122
 123         // Create LLDP PortID TL
 124         Long portNo = InventoryDataServiceUtil.portNumberfromNodeConnectorId(OpenflowVersion.get(version), nodeConnectorId);
 125
 126         String hexString = Long.toHexString(portNo);
 127         byte[] pidValue = LLDPTLV.createPortIDTLVValue(hexString);
 128         LLDPTLV portIdTlv = new LLDPTLV();
 129         portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue()).setLength((short) pidValue.length).setValue(pidValue);
 130         portIdTlv.setType(LLDPTLV.TLVType.PortID.getValue());
 131
 132         // Create LLDP Custom TLV
 133         byte[] customValue = LLDPTLV.createCustomTLVValue(nodeConnectorId.getValue());
 134         LLDPTLV customTlv = new LLDPTLV();
 135         customTlv.setType(LLDPTLV.TLVType.Custom.getValue()).setLength((short) customValue.length)
 136                 .setValue(customValue);
 137
 138         // Create LLDP Custom Option list
 139         List<LLDPTLV> customList = Collections.singletonList(customTlv);
 140
 141         // Create discovery pkt
 142         LLDP discoveryPkt = new LLDP();
 143         discoveryPkt.setChassisId(chassisIdTlv).setPortId(portIdTlv).setTtl(ttlTlv).setSystemNameId(systemNameTlv)
 144                 .setOptionalTLVList(customList);
 145
 146         // Create ethernet pkt
 147         byte[] sourceMac = HexEncode.bytesFromHexString(src.getValue());
 148         Ethernet ethPkt = new Ethernet();
 149         ethPkt.setSourceMACAddress(sourceMac).setDestinationMACAddress(LLDP.LLDPMulticastMac)
 150                 .setEtherType(EtherTypes.LLDP.shortValue()).setPayload(discoveryPkt);
 151
 152         try {
 153             byte[] data = ethPkt.serialize();
 154             return data;
 155         } catch (PacketException e) {
 156             LOG.error("Error creating LLDP packet", e);
 157         }
 158         return null;
 159     }
 160
 161     private class LLDPSpeakerTask extends TimerTask {
 162
 163         @Override
 164         public void run() {
 165             for (InstanceIdentifier<NodeConnector> nodeConnectorInstanceId : nodeConnectorMap.keySet()) {
 166                 InstanceIdentifier<Node> nodeInstanceId = nodeConnectorInstanceId.firstIdentifierOf(Node.class);
 167                 ModelDrivenSwitch md = nodeMap.get(nodeInstanceId);
 168                 md.transmitPacket(nodeConnectorMap.get(nodeConnectorInstanceId));
 169             }
 170
 171         }
 172
 173     }
 174
 175     private String colonize(String orig) {
 176         return orig.replaceAll("(?<=..)(..)", ":$1");
 177     }
 178 }