dhcpservice/impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpL2GwUtil.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.dhcpservice;
   9
  10 import com.google.common.base.Optional;
  11 import java.util.List;
  12 import java.util.function.Predicate;
  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.mdsalutil.MDSALUtil;
  18 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayCache;
  19 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.PhysicalSwitchAugmentation;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.Switches;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical._switch.attributes.TunnelIps;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27
  28 @Singleton
  29 public class DhcpL2GwUtil {
  30
  31     private static final Predicate<List<?>> EMPTY_LIST = (list) -> list == null || list.isEmpty();
  32
  33     private static final Predicate<Optional<Node>> CONTAINS_GLOBAL_AUGMENTATION =
  34         (optionalNode) -> optionalNode.isPresent()
  35                 && optionalNode.get().getAugmentation(HwvtepGlobalAugmentation.class) != null;
  36
  37     private static final Predicate<Optional<Node>> CONTAINS_SWITCH_AUGMENTATION =
  38         (optionalNode) -> optionalNode.isPresent()
  39                 && optionalNode.get().getAugmentation(PhysicalSwitchAugmentation.class) != null;
  40
  41     private final DataBroker dataBroker;
  42     private final L2GatewayCache l2GatewayCache;
  43
  44     @Inject
  45     public DhcpL2GwUtil(DataBroker dataBroker, L2GatewayCache l2GatewayCache) {
  46         this.dataBroker = dataBroker;
  47         this.l2GatewayCache = l2GatewayCache;
  48     }
  49
  50     public IpAddress getHwvtepNodeTunnelIp(InstanceIdentifier<Node> nodeIid) {
  51         String nodeId = nodeIid.firstKeyOf(Node.class).getNodeId().getValue();
  52         L2GatewayDevice targetDevice = null;
  53         for (L2GatewayDevice device : l2GatewayCache.getAll()) {
  54             if (nodeId.equals(device.getHwvtepNodeId())) {
  55                 targetDevice = device;
  56                 break;
  57             }
  58         }
  59         return targetDevice != null ? targetDevice.getTunnelIp() : getTunnelIp(nodeIid);
  60     }
  61
  62
  63     private IpAddress getTunnelIp(InstanceIdentifier<Node> nodeIid) {
  64         Optional<Node> nodeOptional =
  65                 MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, nodeIid);
  66         if (!CONTAINS_GLOBAL_AUGMENTATION.test(nodeOptional)) {
  67             return null;
  68         }
  69         List<Switches> switchIids = nodeOptional.get().getAugmentation(HwvtepGlobalAugmentation.class).getSwitches();
  70         if (EMPTY_LIST.test(switchIids)) {
  71             return null;
  72         }
  73         InstanceIdentifier<Node> psIid = (InstanceIdentifier<Node>) switchIids.get(0).getSwitchRef().getValue();
  74         nodeOptional = MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, psIid);
  75         if (!CONTAINS_SWITCH_AUGMENTATION.test(nodeOptional)) {
  76             return null;
  77         }
  78         List<TunnelIps> tunnelIps = nodeOptional.get().getAugmentation(PhysicalSwitchAugmentation.class).getTunnelIps();
  79         if (EMPTY_LIST.test(tunnelIps)) {
  80             return null;
  81         }
  82         return tunnelIps.get(0).getKey().getTunnelIpsKey();
  83     }
  84
  85 }