elanmanager/elanmanager-impl/src/main/java/org/opendaylight/vpnservice/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.vpnservice.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.vpnservice.mdsalutil.AbstractDataChangeListener;
  15 import org.opendaylight.vpnservice.elan.utils.ElanConstants;
  16 import org.opendaylight.vpnservice.mdsalutil.*;
  17 import org.opendaylight.vpnservice.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
  34     private IMdsalApiManager mdsalManager;
  35     private ListenerRegistration<DataChangeListener> listenerRegistration;
  36     private final DataBroker broker;
  37
  38     public ElanNodeListener(final DataBroker db, IMdsalApiManager mdsalManager) {
  39         super(Node.class);
  40         broker = db;
  41         this.mdsalManager = mdsalManager;
  42         registerListener(db);
  43     }
  44
  45     private void registerListener(final DataBroker db) {
  46         try {
  47             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  48                     getWildCardPath(), ElanNodeListener.this, AsyncDataBroker.DataChangeScope.SUBTREE);
  49         } catch (final Exception e) {
  50             logger.error("IfmNodeConnectorListener: DataChange listener registration fail!", e);
  51             throw new IllegalStateException("IfmNodeConnectorListener: registration Listener failed.", e);
  52         }
  53     }
  54
  55     private InstanceIdentifier<Node> getWildCardPath() {
  56         return InstanceIdentifier.create(Nodes.class).child(Node.class);
  57     }
  58
  59
  60     @Override
  61     protected void remove(InstanceIdentifier<Node> identifier, Node del) {
  62
  63     }
  64
  65     @Override
  66     protected void update(InstanceIdentifier<Node> identifier, Node original, Node update) {
  67
  68     }
  69
  70     @Override
  71     protected void add(InstanceIdentifier<Node> identifier, Node add) {
  72         NodeId nodeId = add.getId();
  73         String[] node =  nodeId.getValue().split(":");
  74         if(node.length < 2) {
  75             logger.warn("Unexpected nodeId {}", nodeId.getValue());
  76             return;
  77         }
  78         BigInteger dpId = new BigInteger(node[1]);
  79         createTableMissEntry(dpId);
  80     }
  81
  82     public void createTableMissEntry(BigInteger dpnId) {
  83         setupTableMissSmacFlow(dpnId);
  84         setupTableMissDmacFlow(dpnId);
  85     }
  86
  87     private void setupTableMissSmacFlow(BigInteger dpId) {
  88         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
  89         List<InstructionInfo> mkInstructions = new ArrayList<InstructionInfo>();
  90         List <ActionInfo> actionsInfos = new ArrayList <ActionInfo> ();
  91         actionsInfos.add(new ActionInfo(ActionType.punt_to_controller, new String[] {}));
  92         mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
  93         mkInstructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { ElanConstants.ELAN_DMAC_TABLE }));
  94
  95         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, ElanConstants.ELAN_SMAC_TABLE, getTableMissFlowRef(ElanConstants.ELAN_SMAC_TABLE),
  96                 0, "ELAN sMac Table Miss Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_SMAC,
  97                 mkMatches, mkInstructions);
  98         mdsalManager.installFlow(flowEntity);
  99     }
 100
 101     private void setupTableMissDmacFlow(BigInteger dpId) {
 102         List<MatchInfo> mkMatches = new ArrayList<MatchInfo>();
 103
 104         List<InstructionInfo> mkInstructions = new ArrayList<InstructionInfo>();
 105         mkInstructions.add(new InstructionInfo(InstructionType.goto_table, new long[] { ElanConstants.ELAN_UNKNOWN_DMAC_TABLE }));
 106
 107         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, ElanConstants.ELAN_DMAC_TABLE, getTableMissFlowRef(ElanConstants.ELAN_DMAC_TABLE),
 108                 0, "ELAN dMac Table Miss Flow", 0, 0, ElanConstants.COOKIE_ELAN_KNOWN_DMAC,
 109                 mkMatches, mkInstructions);
 110         mdsalManager.installFlow(flowEntity);
 111     }
 112
 113     private String getTableMissFlowRef(long tableId) {
 114         return new StringBuffer().append(tableId).toString();
 115     }
 116 }