vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanNodeListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.netvirt.elan.internal;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  12 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker;
  13 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  14 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  15 import org.opendaylight.genius.mdsalutil.AbstractDataChangeListener;
  16 import org.opendaylight.genius.mdsalutil.*;
  17 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import java.math.BigInteger;
  27 import java.util.ArrayList;
  28 import java.util.List;
  29
  30 public class ElanNodeListener extends AbstractDataChangeListener<Node> {
  31
  32     private static final Logger logger = LoggerFactory.getLogger(ElanNodeListener.class);
  33     private static volatile ElanNodeListener elanNodeListener = null;
  34     private ElanServiceProvider elanServiceProvider = null;
  35     private ListenerRegistration<DataChangeListener> listenerRegistration;
  36     public static ElanNodeListener getElanNodeListener(ElanServiceProvider elanServiceProvider) {
  37         if (elanNodeListener == null)
  38             synchronized (ElanNodeListener.class) {
  39                 if (elanNodeListener == null)
  40                 {
  41                     ElanNodeListener elanNodeListener = new ElanNodeListener(elanServiceProvider);
  42                     return elanNodeListener;
  43
  44                 }
  45             }
  46         return elanNodeListener;
  47     }
  48
  49     public ElanNodeListener(ElanServiceProvider elanServiceProvider) {
  50         super(Node.class);
  51         this.elanServiceProvider= elanServiceProvider;
  52         registerListener(this.elanServiceProvider.getBroker());
  53     }
  54
  55     private void registerListener(final DataBroker db) {
  56         try {
  57             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  58                 getWildCardPath(), ElanNodeListener.this, AsyncDataBroker.DataChangeScope.SUBTREE);
  59         } catch (final Exception e) {
  60             logger.error("ElanNodeListener: DataChange listener registration fail!", e);
  61             throw new IllegalStateException("ElanNodeListener: registration Listener failed.", e);
  62         }
  63     }
  64
  65     private InstanceIdentifier<Node> getWildCardPath() {
  66         return InstanceIdentifier.create(Nodes.class).child(Node.class);
  67     }
  68
  69
  70     @Override
  71     protected void remove(InstanceIdentifier<Node> identifier, Node del) {
  72
  73     }
  74
  75     @Override
  76     protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
  77
  78     }
  79
  80     @Override
  81     protected void add(InstanceIdentifier<Node> identifier, Node add) {
  82         NodeId nodeId = add.getId();
  83         String[] node =  nodeId.getValue().split(":");
  84         if (node.length < 2) {
  85             logger.warn("Unexpected nodeId {}", nodeId.getValue());
  86             return;
  87         }
  88         BigInteger dpId = new BigInteger(node[1]);
  89         createTableMissEntry(dpId);
  90     }
  91
  92     public void createTableMissEntry(BigInteger dpnId) {
  93         setupTableMissSmacFlow(dpnId);
  94         setupTableMissDmacFlow(dpnId);
  95     }
  96
  97     private void setupTableMissSmacFlow(BigInteger dpId) {
  98         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
  99         List<InstructionInfo> mkInstructions = new ArrayList<InstructionInfo>();
 100         List <ActionInfo> actionsInfos = new ArrayList <ActionInfo> ();
 101         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller, new String[] {}));
 102         mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 103         mkInstructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { ElanConstants.ELAN_DMAC_TABLE }));
 104
 105         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, ElanConstants.ELAN_SMAC_TABLE, getTableMissFlowRef(ElanConstants.ELAN_SMAC_TABLE),
 106             0, "ELAN sMac Table Miss Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_SMAC,
 107             mkMatches, mkInstructions);
 108         this.elanServiceProvider.getMdsalManager().installFlow(flowEntity);
 109     }
 110
 111     private void setupTableMissDmacFlow(BigInteger dpId) {
 112         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
 113
 114         List<InstructionInfo> mkInstructions = new ArrayList<InstructionInfo>();
 115         mkInstructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { ElanConstants.ELAN_UNKNOWN_DMAC_TABLE }));
 116
 117         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, ElanConstants.ELAN_DMAC_TABLE, getTableMissFlowRef(ElanConstants.ELAN_DMAC_TABLE),
 118             0, "ELAN dMac Table Miss Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_DMAC,
 119             mkMatches, mkInstructions);
 120         this.elanServiceProvider.getMdsalManager().installFlow(flowEntity);
 121     }
 122
 123     private String getTableMissFlowRef(long tableId) {
 124         return new StringBuffer().append(tableId).toString();
 125     }
 126
 127
 128 }