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 java.util.ArrayList;
  11 import java.util.List;
  12 import java.util.Optional;
  13 import java.util.concurrent.ExecutionException;
  14 import java.util.function.Predicate;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.eclipse.jdt.annotation.Nullable;
  18 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  19 import org.opendaylight.mdsal.binding.api.DataBroker;
  20 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  21 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayCache;
  22 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.HwvtepGlobalAugmentation;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.PhysicalSwitchAugmentation;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.global.attributes.Switches;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.hwvtep.rev150901.hwvtep.physical._switch.attributes.TunnelIps;
  28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30
  31 @Singleton
  32 public class DhcpL2GwUtil {
  33
  34     private static final Predicate<List<?>> EMPTY_LIST = (list) -> list == null || list.isEmpty();
  35
  36     private static final Predicate<Optional<Node>> CONTAINS_GLOBAL_AUGMENTATION =
  37         (optionalNode) -> optionalNode.isPresent()
  38                 && optionalNode.get().augmentation(HwvtepGlobalAugmentation.class) != null;
  39
  40     private static final Predicate<Optional<Node>> CONTAINS_SWITCH_AUGMENTATION =
  41         (optionalNode) -> optionalNode.isPresent()
  42                 && optionalNode.get().augmentation(PhysicalSwitchAugmentation.class) != null;
  43
  44     private final DataBroker dataBroker;
  45     private final L2GatewayCache l2GatewayCache;
  46
  47     @Inject
  48     public DhcpL2GwUtil(DataBroker dataBroker, L2GatewayCache l2GatewayCache) {
  49         this.dataBroker = dataBroker;
  50         this.l2GatewayCache = l2GatewayCache;
  51     }
  52
  53     @Nullable
  54     public IpAddress getHwvtepNodeTunnelIp(InstanceIdentifier<Node> nodeIid) {
  55         String nodeId = nodeIid.firstKeyOf(Node.class).getNodeId().getValue();
  56         L2GatewayDevice targetDevice = null;
  57         for (L2GatewayDevice device : l2GatewayCache.getAll()) {
  58             if (nodeId.equals(device.getHwvtepNodeId())) {
  59                 targetDevice = device;
  60                 break;
  61             }
  62         }
  63         return targetDevice != null ? targetDevice.getTunnelIp() : getTunnelIp(nodeIid);
  64     }
  65
  66
  67     @Nullable
  68     private IpAddress getTunnelIp(InstanceIdentifier<Node> nodeIid) {
  69         Optional<Node> nodeOptional;
  70         try {
  71             nodeOptional = SingleTransactionDataBroker.syncReadOptional(dataBroker,
  72                     LogicalDatastoreType.OPERATIONAL, nodeIid);
  73             if (!CONTAINS_GLOBAL_AUGMENTATION.test(nodeOptional)) {
  74                 return null;
  75             }
  76             List<Switches> switchIids = new ArrayList<Switches>(nodeOptional.get()
  77                     .augmentation(HwvtepGlobalAugmentation.class).nonnullSwitches().values());
  78             if (EMPTY_LIST.test(switchIids)) {
  79                 return null;
  80             }
  81             InstanceIdentifier<Node> psIid = (InstanceIdentifier<Node>) switchIids.get(0).getSwitchRef().getValue();
  82             nodeOptional = SingleTransactionDataBroker.syncReadOptional(dataBroker, LogicalDatastoreType.OPERATIONAL,
  83                     psIid);
  84             if (!CONTAINS_SWITCH_AUGMENTATION.test(nodeOptional)) {
  85                 return null;
  86             }
  87             List<TunnelIps> tunnelIps = new ArrayList<TunnelIps>(nodeOptional.get()
  88                     .augmentation(PhysicalSwitchAugmentation.class).nonnullTunnelIps().values());
  89             if (EMPTY_LIST.test(tunnelIps)) {
  90                 return null;
  91             }
  92             return tunnelIps.get(0).key().getTunnelIpsKey();
  93         } catch (ExecutionException | InterruptedException e) {
  94             return null;
  95         }
  96     }
  97
  98 }