ipv6service/impl/src/main/java/org/opendaylight/netvirt/ipv6service/Ipv6NodeListener.java

   1 /*
   2  * Copyright (c) 2016, 2017 Red Hat, 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.netvirt.ipv6service;
   9
  10 import java.util.ArrayList;
  11 import java.util.List;
  12 import javax.annotation.PostConstruct;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  18 import org.opendaylight.genius.mdsalutil.ActionInfo;
  19 import org.opendaylight.genius.mdsalutil.FlowEntity;
  20 import org.opendaylight.genius.mdsalutil.InstructionInfo;
  21 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  22 import org.opendaylight.genius.mdsalutil.MatchInfo;
  23 import org.opendaylight.genius.mdsalutil.NwConstants;
  24 import org.opendaylight.genius.mdsalutil.actions.ActionNxResubmit;
  25 import org.opendaylight.genius.mdsalutil.instructions.InstructionApplyActions;
  26 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.opendaylight.yangtools.yang.common.Uint64;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 @Singleton
  37 public class Ipv6NodeListener extends AsyncClusteredDataTreeChangeListenerBase<FlowCapableNode, Ipv6NodeListener> {
  38     private static final Logger LOG = LoggerFactory.getLogger(Ipv6NodeListener.class);
  39     private final DataBroker dataBroker;
  40     private final IMdsalApiManager mdsalUtil;
  41     private final Ipv6ServiceEosHandler ipv6ServiceEosHandler;
  42
  43     @Inject
  44     public Ipv6NodeListener(final DataBroker dataBroker, final IMdsalApiManager mdsalUtil,
  45                             final Ipv6ServiceEosHandler ipv6ServiceEosHandler) {
  46         this.dataBroker = dataBroker;
  47         this.mdsalUtil = mdsalUtil;
  48         this.ipv6ServiceEosHandler = ipv6ServiceEosHandler;
  49     }
  50
  51     @PostConstruct
  52     public void init() {
  53         LOG.info("{} init", getClass().getSimpleName());
  54         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  55     }
  56
  57     @Override
  58     protected InstanceIdentifier<FlowCapableNode> getWildCardPath() {
  59         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
  60     }
  61
  62     @Override
  63     protected void update(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModificationBefore,
  64                           FlowCapableNode dataObjectModificationAfter) {
  65         // do nothing
  66     }
  67
  68     @Override
  69     protected void add(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModification) {
  70         LOG.trace("FlowCapableNode Added: key: {}", key);
  71
  72         NodeKey nodeKey = key.firstKeyOf(Node.class);
  73         Uint64 dpnId = MDSALUtil.getDpnIdFromNodeName(nodeKey.getId());
  74         createTableMissEntry(dpnId);
  75     }
  76
  77     private void createTableMissEntry(Uint64 dpnId) {
  78         if (!ipv6ServiceEosHandler.isClusterOwner()) {
  79             LOG.trace("Not a cluster Owner, skip flow programming.");
  80             return;
  81         }
  82
  83         List<MatchInfo> matches = new ArrayList<>();
  84         List<InstructionInfo> instructions = new ArrayList<>();
  85         List<ActionInfo> actionsInfos = new ArrayList<>();
  86         actionsInfos.add(new ActionNxResubmit(NwConstants.LPORT_DISPATCHER_TABLE));
  87         instructions.add(new InstructionApplyActions(actionsInfos));
  88         FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpnId, NwConstants.IPV6_TABLE, "IPv6TableMissFlow",
  89                 0, "IPv6 Table Miss Flow", 0, 0,
  90                 NwConstants.COOKIE_IPV6_TABLE, matches, instructions);
  91         mdsalUtil.installFlow(flowEntity);
  92     }
  93
  94     @Override
  95     protected void remove(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModification) {
  96         // do nothing
  97     }
  98
  99     /* (non-Javadoc)
 100      * @see org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#getDataTreeChangeListener()
 101      */
 102     @Override
 103     protected Ipv6NodeListener getDataTreeChangeListener() {
 104         return Ipv6NodeListener.this;
 105     }
 106
 107 }