vpnservice/aclservice/impl/src/main/java/org/opendaylight/netvirt/aclservice/listeners/AclEventListener.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.Iterator;
  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.AclServiceManager;
  21 import org.opendaylight.netvirt.aclservice.api.utils.AclInterface;
  22 import org.opendaylight.netvirt.aclservice.utils.AclClusterUtil;
  23 import org.opendaylight.netvirt.aclservice.utils.AclDataUtil;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.AccessLists;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.Acl;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 @Singleton
  34 public class AclEventListener extends AsyncDataTreeChangeListenerBase<Acl, AclEventListener> implements
  35         ClusteredDataTreeChangeListener<Acl> {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(AclEventListener.class);
  38     private final AclServiceManager aclServiceManager;
  39     private final AclClusterUtil aclClusterUtil;
  40     private final DataBroker dataBroker;
  41
  42     @Inject
  43     public AclEventListener(AclServiceManager aclServiceManager, AclClusterUtil aclClusterUtil, DataBroker dataBroker) {
  44         super(Acl.class, AclEventListener.class);
  45         this.aclServiceManager = aclServiceManager;
  46         this.aclClusterUtil = aclClusterUtil;
  47         this.dataBroker = dataBroker;
  48     }
  49
  50     @Override
  51     @PostConstruct
  52     public void init() {
  53         LOG.info("{} start", getClass().getSimpleName());
  54         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  55     }
  56
  57     @Override
  58     protected InstanceIdentifier<Acl> getWildCardPath() {
  59         return InstanceIdentifier
  60                 .create(AccessLists.class)
  61                 .child(Acl.class);
  62     }
  63
  64     @Override
  65     protected void remove(InstanceIdentifier<Acl> key, Acl acl) {
  66         updateRemoteAclCache(acl.getAccessListEntries().getAce(), acl.getAclName(), AclServiceManager.Action.REMOVE);
  67     }
  68
  69     @Override
  70     protected void update(InstanceIdentifier<Acl> key, Acl aclBefore, Acl aclAfter) {
  71         List<AclInterface> interfaceList = AclDataUtil.getInterfaceList(new Uuid(aclAfter.getAclName()));
  72         // find and update added ace rules in acl
  73         List<Ace> addedAceRules = getChangedAceList(aclAfter, aclBefore);
  74         updateRemoteAclCache(addedAceRules, aclAfter.getAclName(), AclServiceManager.Action.ADD);
  75         if (interfaceList != null && aclClusterUtil.isEntityOwner()) {
  76             updateAceRules(interfaceList, addedAceRules, AclServiceManager.Action.ADD);
  77         }
  78         // find and update deleted ace rules in acl
  79         List<Ace> deletedAceRules = getChangedAceList(aclBefore, aclAfter);
  80         if (interfaceList != null && aclClusterUtil.isEntityOwner()) {
  81             updateAceRules(interfaceList, deletedAceRules, AclServiceManager.Action.REMOVE);
  82         }
  83         updateRemoteAclCache(deletedAceRules, aclAfter.getAclName(), AclServiceManager.Action.REMOVE);
  84
  85     }
  86
  87     private void updateAceRules(List<AclInterface> interfaceList, List<Ace> aceList, AclServiceManager.Action action) {
  88         if (null != aceList && !aceList.isEmpty()) {
  89             LOG.trace("update ace rules - action: {} , ace rules: {}", action.name(), aceList);
  90             for (AclInterface port : interfaceList) {
  91                 for (Ace aceRule : aceList) {
  92                     aclServiceManager.notifyAce(port, action, aceRule);
  93                 }
  94             }
  95         }
  96     }
  97
  98     @Override
  99     protected void add(InstanceIdentifier<Acl> key, Acl acl) {
 100         updateRemoteAclCache(acl.getAccessListEntries().getAce(), acl.getAclName(), AclServiceManager.Action.ADD);
 101     }
 102
 103     private void updateRemoteAclCache(List<Ace> aceList, String aclName, AclServiceManager.Action action) {
 104         if (null == aceList) {
 105             return;
 106         }
 107         for (Ace ace : aceList) {
 108             SecurityRuleAttr aceAttributes = ace.getAugmentation(SecurityRuleAttr.class);
 109             if (aceAttributes != null && aceAttributes.getRemoteGroupId() != null) {
 110                 if (action == AclServiceManager.Action.ADD) {
 111                     AclDataUtil.addRemoteAclId(aceAttributes.getRemoteGroupId(), new Uuid(aclName));
 112                 } else {
 113                     AclDataUtil.removeRemoteAclId(aceAttributes.getRemoteGroupId(), new Uuid(aclName));
 114                 }
 115             }
 116         }
 117     }
 118
 119     @Override
 120     protected AclEventListener getDataTreeChangeListener() {
 121         return this;
 122     }
 123
 124     private List<Ace> getChangedAceList(Acl updatedAcl, Acl currentAcl) {
 125         if (updatedAcl == null) {
 126             return null;
 127         }
 128         List<Ace> updatedAceList = new ArrayList<>(updatedAcl.getAccessListEntries().getAce());
 129         if (currentAcl == null) {
 130             return updatedAceList;
 131         }
 132         List<Ace> currentAceList = new ArrayList<>(currentAcl.getAccessListEntries().getAce());
 133         for (Iterator<Ace> iterator = updatedAceList.iterator(); iterator.hasNext(); ) {
 134             Ace ace1 = iterator.next();
 135             for (Ace ace2 : currentAceList) {
 136                 if (ace1.getRuleName().equals(ace2.getRuleName())) {
 137                     iterator.remove();
 138                 }
 139             }
 140         }
 141         return updatedAceList;
 142     }
 143 }