aclservice/impl/src/main/java/org/opendaylight/netvirt/aclservice/listeners/AclInterfaceListener.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.aclservice.listeners;
   9
  10 import java.util.ArrayList;
  11 import java.util.HashSet;
  12 import java.util.List;
  13 import javax.annotation.PostConstruct;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.netvirt.aclservice.api.AclInterfaceCache;
  21 import org.opendaylight.netvirt.aclservice.api.AclServiceManager;
  22 import org.opendaylight.netvirt.aclservice.api.AclServiceManager.Action;
  23 import org.opendaylight.netvirt.aclservice.api.utils.AclInterface;
  24 import org.opendaylight.netvirt.aclservice.utils.AclClusterUtil;
  25 import org.opendaylight.netvirt.aclservice.utils.AclDataUtil;
  26 import org.opendaylight.netvirt.aclservice.utils.AclServiceUtils;
  27 import org.opendaylight.serviceutils.srm.RecoverableListener;
  28 import org.opendaylight.serviceutils.srm.ServiceRecoveryRegistry;
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.ParentRefs;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionEgress;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionIngress;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.InterfaceAcl;
  36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 @Singleton
  41 public class AclInterfaceListener extends AsyncDataTreeChangeListenerBase<Interface, AclInterfaceListener>
  42         implements ClusteredDataTreeChangeListener<Interface>, RecoverableListener {
  43     private static final Logger LOG = LoggerFactory.getLogger(AclInterfaceListener.class);
  44
  45     private final AclServiceManager aclServiceManager;
  46     private final AclClusterUtil aclClusterUtil;
  47     private final DataBroker dataBroker;
  48     private final AclDataUtil aclDataUtil;
  49     private final AclInterfaceCache aclInterfaceCache;
  50     private final AclServiceUtils aclServiceUtils;
  51
  52     @Inject
  53     public AclInterfaceListener(AclServiceManager aclServiceManager, AclClusterUtil aclClusterUtil,
  54             DataBroker dataBroker, AclDataUtil aclDataUtil, AclInterfaceCache aclInterfaceCache,
  55             AclServiceUtils aclServicUtils, ServiceRecoveryRegistry serviceRecoveryRegistry) {
  56         super(Interface.class, AclInterfaceListener.class);
  57         this.aclServiceManager = aclServiceManager;
  58         this.aclClusterUtil = aclClusterUtil;
  59         this.dataBroker = dataBroker;
  60         this.aclDataUtil = aclDataUtil;
  61         this.aclInterfaceCache = aclInterfaceCache;
  62         this.aclServiceUtils = aclServicUtils;
  63         serviceRecoveryRegistry.addRecoverableListener(AclServiceUtils.getRecoverServiceRegistryKey(), this);
  64     }
  65
  66     @Override
  67     @PostConstruct
  68     public void init() {
  69         LOG.info("{} start", getClass().getSimpleName());
  70         registerListener();
  71     }
  72
  73     @Override
  74     public void registerListener() {
  75         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  76     }
  77
  78     @Override
  79     protected InstanceIdentifier<Interface> getWildCardPath() {
  80         return InstanceIdentifier.create(Interfaces.class).child(Interface.class);
  81     }
  82
  83     @Override
  84     public void remove(InstanceIdentifier<Interface> key, Interface port) {
  85         LOG.trace("Received AclInterface remove event, port={}", port);
  86         String interfaceId = port.getName();
  87         AclInterface aclInterface = aclInterfaceCache.remove(interfaceId);
  88         if (AclServiceUtils.isOfInterest(aclInterface)) {
  89             if (aclClusterUtil.isEntityOwner()) {
  90                 LOG.debug("On remove event, notify ACL unbind/remove for interface: {}", interfaceId);
  91                 aclServiceManager.notify(aclInterface, null, Action.UNBIND);
  92                 if (aclInterface.getDpId() != null) {
  93                     aclServiceManager.notify(aclInterface, null, Action.REMOVE);
  94                 }
  95                 aclServiceUtils.deleteSubnetInfo(interfaceId);
  96             }
  97         }
  98     }
  99
 100     @Override
 101     public void update(InstanceIdentifier<Interface> key, Interface portBefore, Interface portAfter) {
 102         if (portBefore.augmentation(ParentRefs.class) == null
 103                 && portAfter.augmentation(ParentRefs.class) != null) {
 104             LOG.trace("Ignoring event for update in ParentRefs for {} ", portAfter.getName());
 105             return;
 106         }
 107         LOG.trace("Received AclInterface update event, portBefore={}, portAfter={}", portBefore, portAfter);
 108         InterfaceAcl aclInPortAfter = portAfter.augmentation(InterfaceAcl.class);
 109         InterfaceAcl aclInPortBefore = portBefore.augmentation(InterfaceAcl.class);
 110
 111         String interfaceId = portAfter.getName();
 112         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state
 113             .Interface interfaceState = AclServiceUtils.getInterfaceStateFromOperDS(dataBroker, interfaceId);
 114
 115         AclInterface aclInterfaceBefore = aclInterfaceCache.get(interfaceId);
 116         if (aclInterfaceBefore == null || isPortSecurityEnabledNow(aclInPortBefore, aclInPortAfter)) {
 117             // Updating cache now as it might have not updated when
 118             // port-security-enable=false
 119             aclInterfaceBefore = addOrUpdateAclInterfaceCache(interfaceId, aclInPortBefore, true, interfaceState);
 120         }
 121         if (aclInPortAfter != null && aclInPortAfter.isPortSecurityEnabled()
 122                 || aclInPortBefore != null && aclInPortBefore.isPortSecurityEnabled()) {
 123             List<Uuid> sgsBefore = null;
 124             if (aclInPortBefore != null) {
 125                 sgsBefore = aclInPortBefore.getSecurityGroups();
 126             }
 127             boolean isSgChanged = isSecurityGroupsChanged(sgsBefore, aclInPortAfter.getSecurityGroups());
 128             AclInterface aclInterfaceAfter =
 129                     addOrUpdateAclInterfaceCache(interfaceId, aclInPortAfter, isSgChanged, interfaceState);
 130
 131             if (aclClusterUtil.isEntityOwner()) {
 132                 // Handle bind/unbind service irrespective of interface state (up/down)
 133                 boolean isPortSecurityEnable = aclInterfaceAfter.isPortSecurityEnabled();
 134                 boolean isPortSecurityEnableBefore = aclInterfaceBefore.isPortSecurityEnabled();
 135                 // if port security enable is changed and is disabled, unbind ACL service
 136                 if (isPortSecurityEnableBefore != isPortSecurityEnable && !isPortSecurityEnable) {
 137                     LOG.debug("Notify unbind ACL service for interface={}, isPortSecurityEnable={}", interfaceId,
 138                             isPortSecurityEnable);
 139                     aclServiceManager.notify(aclInterfaceAfter, null, Action.UNBIND);
 140                 }
 141                 if (interfaceState != null && interfaceState.getOperStatus().equals(
 142                         org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces
 143                             .state.Interface.OperStatus.Up)) {
 144                     // if port security enable is changed and is enabled, bind ACL service
 145                     if (isPortSecurityEnableBefore != isPortSecurityEnable && isPortSecurityEnable) {
 146                         LOG.debug("Notify bind ACL service for interface={}, isPortSecurityEnable={}", interfaceId,
 147                                 isPortSecurityEnable);
 148                         aclServiceManager.notify(aclInterfaceAfter, null, Action.BIND);
 149                     }
 150                     LOG.debug("On update event, notify ACL service manager to update ACL for interface: {}",
 151                             interfaceId);
 152                     // handle add for AclPortsLookup before processing update
 153                     aclServiceUtils.addAclPortsLookupForInterfaceUpdate(aclInterfaceBefore, aclInterfaceAfter);
 154
 155                     aclServiceManager.notify(aclInterfaceAfter, aclInterfaceBefore, AclServiceManager.Action.UPDATE);
 156                     // handle delete for AclPortsLookup after processing update
 157                     aclServiceUtils.deleteAclPortsLookupForInterfaceUpdate(aclInterfaceBefore, aclInterfaceAfter);
 158                 }
 159             }
 160             updateCacheWithAclChange(aclInterfaceBefore, aclInterfaceAfter);
 161         }
 162     }
 163
 164     private void updateCacheWithAclChange(AclInterface aclInterfaceBefore, AclInterface aclInterfaceAfter) {
 165         List<Uuid> addedAcls = AclServiceUtils.getUpdatedAclList(aclInterfaceAfter.getSecurityGroups(),
 166                 aclInterfaceBefore.getSecurityGroups());
 167         List<Uuid> deletedAcls = AclServiceUtils.getUpdatedAclList(aclInterfaceBefore.getSecurityGroups(),
 168                 aclInterfaceAfter.getSecurityGroups());
 169         if (deletedAcls != null && !deletedAcls.isEmpty()) {
 170             aclDataUtil.removeAclInterfaceMap(deletedAcls, aclInterfaceAfter);
 171         }
 172         if (addedAcls != null && !addedAcls.isEmpty()) {
 173             aclDataUtil.addOrUpdateAclInterfaceMap(addedAcls, aclInterfaceAfter);
 174         }
 175     }
 176
 177     private boolean isPortSecurityEnabledNow(InterfaceAcl aclInPortBefore, InterfaceAcl aclInPortAfter) {
 178         return aclInPortBefore != null && !aclInPortBefore.isPortSecurityEnabled() && aclInPortAfter != null
 179                 && aclInPortAfter.isPortSecurityEnabled();
 180     }
 181
 182     private boolean isSecurityGroupsChanged(List<Uuid> sgsBefore, List<Uuid> sgsAfter) {
 183         if (sgsBefore == null && sgsAfter == null) {
 184             return false;
 185         }
 186         if ((sgsBefore == null && sgsAfter != null) || (sgsBefore != null && sgsAfter == null)) {
 187             return true;
 188         }
 189         if (sgsBefore != null && sgsAfter != null) {
 190             return !(new HashSet<>(sgsBefore)).equals(new HashSet<>(sgsAfter));
 191         }
 192         return true;
 193     }
 194
 195     private AclInterface addOrUpdateAclInterfaceCache(String interfaceId, InterfaceAcl aclInPort) {
 196         return addOrUpdateAclInterfaceCache(interfaceId, aclInPort, true, null);
 197     }
 198
 199     private AclInterface addOrUpdateAclInterfaceCache(String interfaceId, InterfaceAcl aclInPort, boolean isSgChanged,
 200             org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state
 201                     .Interface interfaceState) {
 202         AclInterface aclInterface = aclInterfaceCache.addOrUpdate(interfaceId, (prevAclInterface, builder) -> {
 203             List<Uuid> sgs = new ArrayList<>();
 204             if (aclInPort != null) {
 205                 sgs = aclInPort.getSecurityGroups();
 206                 builder.portSecurityEnabled(aclInPort.isPortSecurityEnabled()).securityGroups(sgs)
 207                         .allowedAddressPairs(aclInPort.getAllowedAddressPairs());
 208             }
 209
 210             if ((prevAclInterface == null || prevAclInterface.getLPortTag() == null) && interfaceState != null) {
 211                 builder.dpId(AclServiceUtils.getDpIdFromIterfaceState(interfaceState))
 212                         .lPortTag(interfaceState.getIfIndex()).isMarkedForDelete(false);
 213             }
 214
 215             builder.subnetInfo(aclServiceUtils.getSubnetInfo(interfaceId));
 216             if (prevAclInterface == null || prevAclInterface.getElanId() == null) {
 217                 builder.elanId(AclServiceUtils.getElanIdFromInterface(interfaceId, dataBroker));
 218             }
 219             if (prevAclInterface == null || isSgChanged) {
 220                 builder.ingressRemoteAclTags(aclServiceUtils.getRemoteAclTags(sgs, DirectionIngress.class))
 221                         .egressRemoteAclTags(aclServiceUtils.getRemoteAclTags(sgs, DirectionEgress.class));
 222             }
 223         });
 224         // Clone and return the ACL interface object
 225         return AclInterface.builder(aclInterface).build();
 226     }
 227
 228     @Override
 229     public void add(InstanceIdentifier<Interface> key, Interface port) {
 230         LOG.trace("Received AclInterface add event, port={}", port);
 231         InterfaceAcl aclInPort = port.augmentation(InterfaceAcl.class);
 232         if (aclInPort != null && aclInPort.isPortSecurityEnabled()) {
 233             String interfaceId = port.getName();
 234             AclInterface aclInterface = addOrUpdateAclInterfaceCache(interfaceId, aclInPort);
 235
 236             // if interface state event comes first followed by interface config event.
 237             if (aclInterface.getDpId() != null && aclInterface.getElanId() != null && aclClusterUtil.isEntityOwner()) {
 238                 LOG.debug("On add event, notify ACL bind/add for interface: {}", interfaceId);
 239                 aclServiceManager.notify(aclInterface, null, Action.BIND);
 240                 aclServiceManager.notify(aclInterface, null, Action.ADD);
 241             }
 242         }
 243     }
 244
 245     @Override
 246     protected AclInterfaceListener getDataTreeChangeListener() {
 247         return this;
 248     }
 249 }