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