git.opendaylight Code Review - netvirt.git/blob

   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.dhcpservice;
   9
  10 import java.math.BigInteger;
  11 import java.util.List;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  16 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundConstants;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.LogicalSwitches;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class DhcpHwvtepListener
  29         extends AsyncDataTreeChangeListenerBase<Node, DhcpHwvtepListener>
  30         implements AutoCloseable {
  31
  32     private static final Logger LOG = LoggerFactory.getLogger(DhcpHwvtepListener.class);
  33     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  34     private DataBroker dataBroker;
  35
  36     public DhcpHwvtepListener(DataBroker dataBroker, DhcpExternalTunnelManager dhcpManager) {
  37         super(Node.class, DhcpHwvtepListener.class);
  38         this.dhcpExternalTunnelManager = dhcpManager;
  39         this.dataBroker = dataBroker;
  40     }
  41
  42     public void init() {
  43         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  44     }
  45
  46     @Override
  47     public void close() throws Exception {
  48         super.close();
  49         LOG.info("DhcpHwvtepListener Closed");
  50     }
  51
  52     @Override
  53     protected void remove(InstanceIdentifier<Node> identifier,
  54             Node del) {
  55         LOG.trace("Received Hwvtep remove DCN {}", del);
  56         HwvtepGlobalAugmentation hwvtepNode = del.getAugmentation(HwvtepGlobalAugmentation.class);
  57         if (hwvtepNode == null) {
  58             LOG.trace("LogicalSwitch is not present");
  59             return;
  60         }
  61         List<LogicalSwitches> logicalSwitches = hwvtepNode.getLogicalSwitches();
  62         if (logicalSwitches == null || logicalSwitches.isEmpty()) {
  63             LOG.trace("LogicalSwitch is not added");
  64             return;
  65         }
  66         for (LogicalSwitches logicalSwitch : logicalSwitches) {
  67             String elanInstanceName = logicalSwitch.getHwvtepNodeName().getValue();
  68             IpAddress tunnelIp = hwvtepNode.getConnectionInfo().getRemoteIp();
  69             handleLogicalSwitchRemove(elanInstanceName, tunnelIp);
  70         }
  71     }
  72
  73     @Override
  74     protected void update(InstanceIdentifier<Node> identifier,
  75             Node original, Node update) {
  76     }
  77
  78     @Override
  79     protected void add(InstanceIdentifier<Node> identifier,
  80             Node add) {
  81     }
  82
  83     private void handleLogicalSwitchRemove(String elanInstanceName, IpAddress tunnelIp) {
  84         BigInteger designatedDpnId;
  85         designatedDpnId = dhcpExternalTunnelManager.readDesignatedSwitchesForExternalTunnel(tunnelIp, elanInstanceName);
  86         if (designatedDpnId == null) {
  87             LOG.info("Could not find designated DPN ID elanInstanceName {}, tunnelIp {}", elanInstanceName, tunnelIp);
  88             return;
  89         }
  90         dhcpExternalTunnelManager.removeDesignatedSwitchForExternalTunnel(designatedDpnId, tunnelIp, elanInstanceName);
  91     }
  92
  93     @Override
  94     protected InstanceIdentifier<Node> getWildCardPath() {
  95         return InstanceIdentifier.create(NetworkTopology.class)
  96                 .child(Topology.class, new TopologyKey(HwvtepSouthboundConstants.HWVTEP_TOPOLOGY_ID)).child(Node.class);
  97     }
  98
  99     @Override
 100     protected DhcpHwvtepListener getDataTreeChangeListener() {
 101         return DhcpHwvtepListener.this;
 102     }
 103 }