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 com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.FutureCallback;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.math.BigInteger;
  14 import java.util.ArrayList;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.concurrent.Callable;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  21 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  22 import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
  23 import org.opendaylight.genius.mdsalutil.MDSALDataStoreUtils;
  24 import org.opendaylight.genius.mdsalutil.MDSALUtil;
  25 import org.opendaylight.netvirt.dhcpservice.DhcpExternalTunnelManager;
  26 import org.opendaylight.netvirt.dhcpservice.DhcpManager;
  27 import org.opendaylight.netvirt.dhcpservice.DhcpServiceUtils;
  28 import org.opendaylight.netvirt.elan.arp.responder.ArpResponderInput;
  29 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfTunnel;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.ports.rev150712.ports.attributes.ports.Port;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710.InterfaceNameMacAddresses;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710._interface.name.mac.addresses.InterfaceNameMacAddress;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710._interface.name.mac.addresses.InterfaceNameMacAddressKey;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.dhcpservice.api.rev150710.subnet.dhcp.port.data.SubnetToDhcpPort;
  38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public class DhcpInterfaceRemoveJob implements Callable<List<ListenableFuture<Void>>> {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(DhcpInterfaceRemoveJob.class);
  45
  46     private static final FutureCallback<Void> DEFAULT_CALLBACK = new FutureCallback<Void>() {
  47         @Override
  48         public void onSuccess(Void result) {
  49             LOG.debug("Success in Datastore write operation");
  50         }
  51
  52         @Override
  53         public void onFailure(Throwable error) {
  54             LOG.error("Error in Datastore write operation", error);
  55         }
  56     };
  57
  58     private final DhcpManager dhcpManager;
  59     private final DhcpExternalTunnelManager dhcpExternalTunnelManager;
  60     private final DataBroker dataBroker;
  61     private final ManagedNewTransactionRunner txRunner;
  62     private final Interface interfaceDel;
  63     private final BigInteger dpnId;
  64     private final IInterfaceManager interfaceManager;
  65     private final IElanService elanService;
  66     private final Port port;
  67
  68     public DhcpInterfaceRemoveJob(DhcpManager dhcpManager, DhcpExternalTunnelManager dhcpExternalTunnelManager,
  69                                   DataBroker dataBroker,
  70                                   Interface interfaceDel, BigInteger dpnId, IInterfaceManager interfaceManager,
  71                                   IElanService elanService, Port port) {
  72         this.dhcpManager = dhcpManager;
  73         this.dhcpExternalTunnelManager = dhcpExternalTunnelManager;
  74         this.dataBroker = dataBroker;
  75         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  76         this.interfaceDel = interfaceDel;
  77         this.dpnId = dpnId;
  78         this.interfaceManager = interfaceManager;
  79         this.elanService = elanService;
  80         this.port = port;
  81     }
  82
  83     @Override
  84     public List<ListenableFuture<Void>> call() {
  85         String interfaceName = interfaceDel.getName();
  86         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface iface =
  87                 interfaceManager.getInterfaceInfoFromConfigDataStore(interfaceName);
  88         if (iface != null) {
  89             IfTunnel tunnelInterface = iface.getAugmentation(IfTunnel.class);
  90             if (tunnelInterface != null && !tunnelInterface.isInternal()) {
  91                 IpAddress tunnelIp = tunnelInterface.getTunnelDestination();
  92                 List<BigInteger> dpns = DhcpServiceUtils.getListOfDpns(dataBroker);
  93                 if (dpns.contains(dpnId)) {
  94                     return dhcpExternalTunnelManager.handleTunnelStateDown(tunnelIp, dpnId);
  95                 }
  96                 return Collections.emptyList();
  97             }
  98         }
  99         List<ListenableFuture<Void>> futures = new ArrayList<>();
 100         // Support for VM migration use cases.
 101         futures.add(txRunner.callWithNewWriteOnlyTransactionAndSubmit(
 102             tx -> DhcpServiceUtils.unbindDhcpService(interfaceName, tx)));
 103         java.util.Optional<String> subnetId = DhcpServiceUtils.getNeutronSubnetId(port);
 104         if (subnetId.isPresent()) {
 105             java.util.Optional<SubnetToDhcpPort> subnetToDhcp = DhcpServiceUtils.getSubnetDhcpPortData(dataBroker,
 106                     subnetId.get());
 107             if (subnetToDhcp.isPresent()) {
 108                 LOG.trace("Removing ArpResponder flow for last interface {} on DPN {}", interfaceName, dpnId);
 109                 ArpResponderInput arpInput = new ArpResponderInput.ArpReponderInputBuilder().setDpId(dpnId)
 110                         .setInterfaceName(interfaceName).setSpa(subnetToDhcp.get().getPortFixedip())
 111                         .setLportTag(interfaceDel.getIfIndex()).buildForRemoveFlow();
 112                 elanService.removeArpResponderFlow(arpInput);
 113             }
 114         }
 115         futures.addAll(unInstallDhcpEntries(interfaceDel.getName(), dpnId));
 116         return futures;
 117     }
 118
 119     private List<ListenableFuture<Void>> unInstallDhcpEntries(String interfaceName, BigInteger dpId) {
 120         String vmMacAddress = getAndRemoveVmMacAddress(interfaceName);
 121         return Collections.singletonList(txRunner.callWithNewWriteOnlyTransactionAndSubmit(
 122             tx -> dhcpManager.unInstallDhcpEntries(dpId, vmMacAddress, tx)));
 123     }
 124
 125     private String getAndRemoveVmMacAddress(String interfaceName) {
 126         InstanceIdentifier<InterfaceNameMacAddress> instanceIdentifier =
 127                 InstanceIdentifier.builder(InterfaceNameMacAddresses.class)
 128                         .child(InterfaceNameMacAddress.class, new InterfaceNameMacAddressKey(interfaceName)).build();
 129         Optional<InterfaceNameMacAddress> existingEntry =
 130                 MDSALUtil.read(dataBroker, LogicalDatastoreType.OPERATIONAL, instanceIdentifier);
 131         if (existingEntry.isPresent()) {
 132             String vmMacAddress = existingEntry.get().getMacAddress();
 133             LOG.trace("Entry for interface found in InterfaceNameVmMacAddress map {}, {}", interfaceName, vmMacAddress);
 134             MDSALDataStoreUtils.asyncRemove(dataBroker, LogicalDatastoreType.OPERATIONAL,
 135                     instanceIdentifier, DEFAULT_CALLBACK);
 136             return vmMacAddress;
 137         }
 138         LOG.trace("Entry for interface {} missing in InterfaceNameVmMacAddress map", interfaceName);
 139         return null;
 140     }
 141 }