vpnservice/policyservice/impl/src/main/java/org/opendaylight/netvirt/policyservice/listeners/UnderlayNetworkDpnListener.java

   1 /*
   2  * Copyright (c) 2017 Hewlett Packard Enterprise, Co. 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
   9 package org.opendaylight.netvirt.policyservice.listeners;
  10
  11 import java.math.BigInteger;
  12 import java.util.List;
  13 import java.util.Optional;
  14
  15 import javax.annotation.PostConstruct;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  22 import org.opendaylight.genius.mdsalutil.NwConstants;
  23 import org.opendaylight.netvirt.policyservice.PolicyAceFlowProgrammer;
  24 import org.opendaylight.netvirt.policyservice.util.PolicyServiceUtil;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.policy.rev170207.UnderlayNetworks;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.policy.rev170207.underlay.networks.UnderlayNetwork;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.policy.rev170207.underlay.networks.underlay.network.DpnToInterface;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.policy.rev170207.underlay.networks.underlay.network.PolicyProfile;
  30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  * Listen on {@link DpnToInterface} operational updates for each underlay
  36  * network. When new DPN is added/removed, all policy pipeline associated flows
  37  * and groups will be populated to the new DPN.<br>
  38  * When new tunnel interfaces are added/removed from underlay network, the
  39  * corresponding policy classifier group buckets would be updated accordingly.
  40  */
  41 @Singleton
  42 public class UnderlayNetworkDpnListener
  43         extends AsyncDataTreeChangeListenerBase<DpnToInterface, UnderlayNetworkDpnListener> {
  44     private static final Logger LOG = LoggerFactory.getLogger(UnderlayNetworkDpnListener.class);
  45
  46     private final DataBroker dataBroker;
  47     private final PolicyServiceUtil policyServiceUtil;
  48     private final PolicyAceFlowProgrammer aceFlowProgrammer;
  49
  50     @Inject
  51     public UnderlayNetworkDpnListener(final DataBroker dataBroker, final PolicyServiceUtil policyServiceUtil,
  52             final PolicyAceFlowProgrammer aceFlowProgrammer) {
  53         this.dataBroker = dataBroker;
  54         this.policyServiceUtil = policyServiceUtil;
  55         this.aceFlowProgrammer = aceFlowProgrammer;
  56     }
  57
  58     @Override
  59     @PostConstruct
  60     public void init() {
  61         LOG.info("init");
  62         registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
  63     }
  64
  65     @Override
  66     protected InstanceIdentifier<DpnToInterface> getWildCardPath() {
  67         return InstanceIdentifier.create(UnderlayNetworks.class).child(UnderlayNetwork.class)
  68                 .child(DpnToInterface.class);
  69     }
  70
  71     @Override
  72     protected UnderlayNetworkDpnListener getDataTreeChangeListener() {
  73         return this;
  74     }
  75
  76     @Override
  77     protected void remove(InstanceIdentifier<DpnToInterface> key, DpnToInterface dpnToInterface) {
  78     }
  79
  80     @Override
  81     protected void update(InstanceIdentifier<DpnToInterface> key, DpnToInterface origDpnToInterface,
  82             DpnToInterface updatedDpnToInterface) {
  83     }
  84
  85     @Override
  86     protected void add(InstanceIdentifier<DpnToInterface> key, DpnToInterface dpnToInterface) {
  87         String underlayNetwork = key.firstKeyOf(UnderlayNetwork.class).getNetworkName();
  88         BigInteger dpId = dpnToInterface.getDpId();
  89         LOG.info("DPN {} added to underlay network {}", dpId, underlayNetwork);
  90         populatePolicyRulesToDpn(underlayNetwork, dpId);
  91
  92     }
  93
  94     private void populatePolicyRulesToDpn(String underlayNetwork, BigInteger dpId) {
  95         List<PolicyProfile> profiles = policyServiceUtil.getUnderlayNetworkPolicyProfiles(underlayNetwork);
  96         if (profiles == null || profiles.isEmpty()) {
  97             LOG.debug("No policy profiles found for underlay network {}", underlayNetwork);
  98             return;
  99         }
 100
 101         profiles.forEach(profile -> {
 102             String policyClassifier = profile.getPolicyClassifier();
 103
 104             Optional.ofNullable(policyServiceUtil.getPolicyClassifierAclRules(policyClassifier)).ifPresent(aclRules -> {
 105                 aclRules.forEach(aclRule -> {
 106                     Optional.ofNullable(aclRule.getAceRule()).ifPresent(aceRules -> {
 107                         aceRules.forEach(aceRule -> {
 108                             com.google.common.base.Optional<Ace> policyAceOpt = policyServiceUtil
 109                                     .getPolicyAce(aclRule.getAclName(), aceRule.getRuleName());
 110                             if (policyAceOpt.isPresent()) {
 111                                 aceFlowProgrammer.programAceFlows(policyAceOpt.get(), dpId, NwConstants.ADD_FLOW);
 112                             } else {
 113                                 LOG.warn("Failed to get ACL {} rule {}", aclRule.getAclName(), aceRule.getRuleName());
 114                             }
 115                         });
 116                     });
 117                 });
 118             });
 119         });
 120     }
 121
 122 }