dhcpservice/impl/src/main/java/org/opendaylight/netvirt/dhcpservice/jobs/DhcpInterfaceRemoveJob.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.jobs;
   9
  10 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11 import static org.opendaylight.genius.infra.Datastore.OPERATIONAL;
  12
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import java.math.BigInteger;
  15 import java.util.ArrayList;
  16 import java.util.Collections;
  17 import java.util.List;
  18 import java.util.concurrent.Callable;
  19 import java.util.concurrent.ExecutionException;
  20 import org.eclipse.jdt.annotation.Nullable;
  21 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  22 import org.opendaylight.genius.infra.Datastore;
  23 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  24 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  25 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  26 import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
  27 import org.opendaylight.netvirt.dhcpservice.DhcpExternalTunnelManager;
  28 import org.opendaylight.netvirt.dhcpservice.DhcpManager;
  29 import org.opendaylight.netvirt.dhcpservice.DhcpServiceUtils;
  30 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderInput;
  31 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfTunnel;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710.InterfaceNameMacAddresses;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710._interface.name.mac.addresses.InterfaceNameMacAddress;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710._interface.name.mac.addresses.InterfaceNameMacAddressKey;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710.subnet.dhcp.port.data.SubnetToDhcpPort;
  40 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 public class DhcpInterfaceRemoveJob implements Callable<List<ListenableFuture<Void>>> {
  45
  46     private static final Logger LOG = LoggerFactory.getLogger(DhcpInterfaceRemoveJob.class);
  47
  48     private final DhcpManager dhcpManager;
  49     private final DhcpExternalTunnelManager dhcpExternalTunnelManager;
  50     private final DataBroker dataBroker;
  51     private final ManagedNewTransactionRunner txRunner;
  52     private final Interface interfaceDel;
  53     private final BigInteger dpnId;
  54     private final IInterfaceManager interfaceManager;
  55     private final IElanService elanService;
  56     private final Port port;
  57
  58     public DhcpInterfaceRemoveJob(DhcpManager dhcpManager, DhcpExternalTunnelManager dhcpExternalTunnelManager,
  59                                   DataBroker dataBroker,
  60                                   Interface interfaceDel, BigInteger dpnId, IInterfaceManager interfaceManager,
  61                                   IElanService elanService, Port port) {
  62         this.dhcpManager = dhcpManager;
  63         this.dhcpExternalTunnelManager = dhcpExternalTunnelManager;
  64         this.dataBroker = dataBroker;
  65         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  66         this.interfaceDel = interfaceDel;
  67         this.dpnId = dpnId;
  68         this.interfaceManager = interfaceManager;
  69         this.elanService = elanService;
  70         this.port = port;
  71     }
  72
  73     @Override
  74     public List<ListenableFuture<Void>> call() throws ExecutionException, InterruptedException {
  75         String interfaceName = interfaceDel.getName();
  76         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface iface =
  77                 interfaceManager.getInterfaceInfoFromConfigDataStore(interfaceName);
  78         if (iface != null) {
  79             IfTunnel tunnelInterface = iface.augmentation(IfTunnel.class);
  80             if (tunnelInterface != null && !tunnelInterface.isInternal()) {
  81                 IpAddress tunnelIp = tunnelInterface.getTunnelDestination();
  82                 List<BigInteger> dpns = DhcpServiceUtils.getListOfDpns(dataBroker);
  83                 if (dpns.contains(dpnId)) {
  84                     return dhcpExternalTunnelManager.handleTunnelStateDown(tunnelIp, dpnId);
  85                 }
  86                 return Collections.emptyList();
  87             }
  88         }
  89         List<ListenableFuture<Void>> futures = new ArrayList<>();
  90         // Support for VM migration use cases.
  91         futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(CONFIGURATION,
  92             tx -> DhcpServiceUtils.unbindDhcpService(interfaceName, tx)));
  93         java.util.Optional<String> subnetId = DhcpServiceUtils.getNeutronSubnetId(port);
  94         if (subnetId.isPresent()) {
  95             java.util.Optional<SubnetToDhcpPort> subnetToDhcp = DhcpServiceUtils.getSubnetDhcpPortData(dataBroker,
  96                     subnetId.get());
  97             if (subnetToDhcp.isPresent()) {
  98                 LOG.trace("Removing ArpResponder flow for last interface {} on DPN {}", interfaceName, dpnId);
  99                 ArpResponderInput arpInput = new ArpResponderInput.ArpReponderInputBuilder().setDpId(dpnId)
 100                         .setInterfaceName(interfaceName).setSpa(subnetToDhcp.get().getPortFixedip())
 101                         .setLportTag(interfaceDel.getIfIndex()).buildForRemoveFlow();
 102                 elanService.removeArpResponderFlow(arpInput);
 103             }
 104         }
 105         futures.addAll(unInstallDhcpEntries(interfaceDel.getName(), dpnId));
 106         return futures;
 107     }
 108
 109     private List<ListenableFuture<Void>> unInstallDhcpEntries(String interfaceName, BigInteger dpId)
 110         throws ExecutionException, InterruptedException {
 111         String vmMacAddress = txRunner.applyWithNewReadWriteTransactionAndSubmit(OPERATIONAL,
 112             tx -> getAndRemoveVmMacAddress(tx, interfaceName)).get();
 113         return Collections.singletonList(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 114             tx -> dhcpManager.unInstallDhcpEntries(dpId, vmMacAddress, tx)));
 115     }
 116
 117     @Nullable
 118     private String getAndRemoveVmMacAddress(TypedReadWriteTransaction<Datastore.Operational> tx, String interfaceName)
 119         throws ExecutionException, InterruptedException {
 120         InstanceIdentifier<InterfaceNameMacAddress> instanceIdentifier =
 121                 InstanceIdentifier.builder(InterfaceNameMacAddresses.class)
 122                         .child(InterfaceNameMacAddress.class, new InterfaceNameMacAddressKey(interfaceName)).build();
 123         return tx.read(instanceIdentifier).get().toJavaUtil().map(
 124             interfaceNameMacAddress -> {
 125                 String vmMacAddress = interfaceNameMacAddress.getMacAddress();
 126                 LOG.trace("Entry for interface found in InterfaceNameVmMacAddress map {}, {}", interfaceName,
 127                         vmMacAddress);
 128                 tx.delete(instanceIdentifier);
 129                 return vmMacAddress;
 130             }).orElseGet(() -> {
 131                 LOG.trace("Entry for interface {} missing in InterfaceNameVmMacAddress map", interfaceName);
 132                 return null;
 133             });
 134     }
 135 }