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.annotation.PreDestroy;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  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.datastoreutils.AsyncDataTreeChangeListenerBase;
  21 import org.opendaylight.netvirt.aclservice.api.AclServiceManager;
  22 import org.opendaylight.netvirt.aclservice.api.utils.AclInterface;
  23 import org.opendaylight.netvirt.aclservice.utils.AclClusterUtil;
  24 import org.opendaylight.netvirt.aclservice.utils.AclDataUtil;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.AccessLists;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.Acl;
  27 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
  30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 @Singleton
  35 public class AclEventListener extends AsyncDataTreeChangeListenerBase<Acl, AclEventListener> implements
  36         ClusteredDataTreeChangeListener<Acl> {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(AclEventListener.class);
  39     private final AclServiceManager aclServiceManager;
  40     private final AclClusterUtil aclClusterUtil;
  41     private final DataBroker dataBroker;
  42
  43     @Inject
  44     public AclEventListener(AclServiceManager aclServiceManager, AclClusterUtil aclClusterUtil, DataBroker dataBroker) {
  45         super(Acl.class, AclEventListener.class);
  46         this.aclServiceManager = aclServiceManager;
  47         this.aclClusterUtil = aclClusterUtil;
  48         this.dataBroker = dataBroker;
  49     }
  50
  51     @PostConstruct
  52     // TODO new interface Lifecyle
  53     public void start() {
  54         LOG.info("{} start", getClass().getSimpleName());
  55         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  56     }
  57
  58     @Override
  59     @PreDestroy
  60     // TODO make AsyncDataTreeChangeListenerBase implement new interface Lifecyle
  61     public void close() throws Exception {
  62         super.close();
  63     }
  64
  65     @Override
  66     protected InstanceIdentifier<Acl> getWildCardPath() {
  67         return InstanceIdentifier
  68                 .create(AccessLists.class)
  69                 .child(Acl.class);
  70     }
  71
  72     @Override
  73     protected void remove(InstanceIdentifier<Acl> key, Acl acl) {
  74         updateRemoteAclCache(acl.getAccessListEntries().getAce(), acl.getAclName(), AclServiceManager.Action.REMOVE);
  75     }
  76
  77     @Override
  78     protected void update(InstanceIdentifier<Acl> key, Acl aclBefore, Acl aclAfter) {
  79         List<AclInterface> interfaceList = AclDataUtil.getInterfaceList(new Uuid(aclAfter.getAclName()));
  80         // find and update added ace rules in acl
  81         List<Ace> addedAceRules = getChangedAceList(aclAfter, aclBefore);
  82         updateRemoteAclCache(addedAceRules, aclAfter.getAclName(), AclServiceManager.Action.ADD);
  83         if (interfaceList != null && aclClusterUtil.isEntityOwner()) {
  84             updateAceRules(interfaceList, addedAceRules, AclServiceManager.Action.ADD);
  85         }
  86         // find and update deleted ace rules in acl
  87         List<Ace> deletedAceRules = getChangedAceList(aclBefore, aclAfter);
  88         if (interfaceList != null && aclClusterUtil.isEntityOwner()) {
  89             updateAceRules(interfaceList, deletedAceRules, AclServiceManager.Action.REMOVE);
  90         }
  91         updateRemoteAclCache(deletedAceRules, aclAfter.getAclName(), AclServiceManager.Action.REMOVE);
  92
  93     }
  94
  95     private void updateAceRules(List<AclInterface> interfaceList, List<Ace> aceList, AclServiceManager.Action action) {
  96         if (null != aceList && !aceList.isEmpty()) {
  97             LOG.trace("update ace rules - action: {} , ace rules: {}", action.name(), aceList);
  98             for (AclInterface port : interfaceList) {
  99                 for (Ace aceRule : aceList) {
 100                     aclServiceManager.notifyAce(port, action, aceRule);
 101                 }
 102             }
 103         }
 104     }
 105
 106     @Override
 107     protected void add(InstanceIdentifier<Acl> key, Acl acl) {
 108         updateRemoteAclCache(acl.getAccessListEntries().getAce(), acl.getAclName(), AclServiceManager.Action.ADD);
 109     }
 110
 111     private void updateRemoteAclCache(List<Ace> aceList, String aclName, AclServiceManager.Action action) {
 112         if (null == aceList) {
 113             return;
 114         }
 115         for (Ace ace : aceList) {
 116             SecurityRuleAttr aceAttributes = ace.getAugmentation(SecurityRuleAttr.class);
 117             if (aceAttributes != null && aceAttributes.getRemoteGroupId() != null) {
 118                 if (action == AclServiceManager.Action.ADD) {
 119                     AclDataUtil.addRemoteAclId(aceAttributes.getRemoteGroupId(), new Uuid(aclName));
 120                 } else {
 121                     AclDataUtil.removeRemoteAclId(aceAttributes.getRemoteGroupId(), new Uuid(aclName));
 122                 }
 123             }
 124         }
 125     }
 126
 127     @Override
 128     protected AclEventListener getDataTreeChangeListener() {
 129         return this;
 130     }
 131
 132     private List<Ace> getChangedAceList(Acl updatedAcl, Acl currentAcl) {
 133         if (updatedAcl == null) {
 134             return null;
 135         }
 136         List<Ace> updatedAceList = new ArrayList<>(updatedAcl.getAccessListEntries().getAce());
 137         if (currentAcl == null) {
 138             return updatedAceList;
 139         }
 140         List<Ace> currentAceList = new ArrayList<>(currentAcl.getAccessListEntries().getAce());
 141         for (Iterator<Ace> iterator = updatedAceList.iterator(); iterator.hasNext(); ) {
 142             Ace ace1 = iterator.next();
 143             for (Ace ace2 : currentAceList) {
 144                 if (ace1.getRuleName().equals(ace2.getRuleName())) {
 145                     iterator.remove();
 146                 }
 147             }
 148         }
 149         return updatedAceList;
 150     }
 151 }