cloud-servicechain/impl/src/main/java/org/opendaylight/netvirt/cloudservicechain/listeners/CloudScVpnInterfaceListener.java

   1 /*
   2  * Copyright © 2017 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.cloudservicechain.listeners;
   9
  10 import java.util.Optional;
  11 import javax.annotation.PostConstruct;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.opendaylight.mdsal.binding.api.DataBroker;
  15 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  16 import org.opendaylight.mdsal.common.api.ReadFailedException;
  17 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  18 import org.opendaylight.netvirt.cloudservicechain.VPNServiceChainHandler;
  19 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.VpnInterfaces;
  20 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.VpnInterface;
  21 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.vpn._interface.VpnInstanceNames;
  22 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.interfaces.vpn._interface.VpnInstanceNames.AssociatedSubnetType;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.cloud.servicechain.state.rev160711.vpn.to.pseudo.port.list.VpnToPseudoPortData;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 @Singleton
  29 public class CloudScVpnInterfaceListener
  30         extends AsyncDataTreeChangeListenerBase<VpnInterface, CloudScVpnInterfaceListener> {
  31
  32     private static final Logger LOG = LoggerFactory.getLogger(CloudScVpnInterfaceListener.class);
  33     private final DataBroker dataBroker;
  34     private final VPNServiceChainHandler vpnScHandler;
  35
  36     @Inject
  37     public CloudScVpnInterfaceListener(final DataBroker dataBroker, final VPNServiceChainHandler vpnScHandler) {
  38         super(VpnInterface.class, CloudScVpnInterfaceListener.class);
  39
  40         this.dataBroker = dataBroker;
  41         this.vpnScHandler = vpnScHandler;
  42     }
  43
  44     @Override
  45     @PostConstruct
  46     public void init() {
  47         LOG.info("{} init", getClass().getSimpleName());
  48         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  49     }
  50
  51     @Override
  52     protected CloudScVpnInterfaceListener getDataTreeChangeListener() {
  53         return CloudScVpnInterfaceListener.this;
  54     }
  55
  56     @Override
  57     protected InstanceIdentifier<VpnInterface> getWildCardPath() {
  58         return InstanceIdentifier.create(VpnInterfaces.class).child(VpnInterface.class);
  59     }
  60
  61     @Override
  62     protected void remove(InstanceIdentifier<VpnInterface> key, VpnInterface vpnIfaceRemoved) {
  63         for (VpnInstanceNames vpnInstance : vpnIfaceRemoved.getVpnInstanceNames()) {
  64             String vpnName = vpnInstance.getVpnName();
  65             if (!vpnInstance.getAssociatedSubnetType().equals(AssociatedSubnetType.V4AndV6Subnets)
  66                 && !vpnInstance.getAssociatedSubnetType().equals(AssociatedSubnetType.V4Subnet)) {
  67                 continue;
  68             }
  69             try {
  70                 Optional<VpnToPseudoPortData> optScfInfoForVpn = vpnScHandler.getScfInfoForVpn(vpnName);
  71                 if (!optScfInfoForVpn.isPresent()) {
  72                     LOG.trace("Vpn {} is not related to ServiceChaining. No further action", vpnName);
  73                     return;
  74                 }
  75             } catch (InterruptedException | ExecutionException e) {
  76                 LOG.error("Error reading the ServiceChaining information for VPN {}", vpnName, e);
  77             }
  78             break;
  79         }
  80         vpnScHandler.unbindScfOnVpnInterface(vpnIfaceRemoved.key().getName());
  81     }
  82
  83     @Override
  84     protected void update(InstanceIdentifier<VpnInterface> key, VpnInterface dataObjectModificationBefore,
  85                           VpnInterface dataObjectModificationAfter) {
  86     }
  87
  88     @Override
  89     protected void add(InstanceIdentifier<VpnInterface> key, VpnInterface vpnIfaceAdded) {
  90         for (VpnInstanceNames vpnInstance : vpnIfaceAdded.getVpnInstanceNames()) {
  91             String vpnName = vpnInstance.getVpnName();
  92             if (!vpnInstance.getAssociatedSubnetType().equals(AssociatedSubnetType.V4AndV6Subnets)
  93                 && !vpnInstance.getAssociatedSubnetType().equals(AssociatedSubnetType.V4Subnet)) {
  94                 continue;
  95             }
  96             try {
  97                 Optional<VpnToPseudoPortData> optScfInfoForVpn = vpnScHandler.getScfInfoForVpn(vpnName);
  98                 if (!optScfInfoForVpn.isPresent()) {
  99                     LOG.trace("Vpn {} is not related to ServiceChaining. No further action", vpnName);
 100                     return;
 101                 }
 102                 vpnScHandler.bindScfOnVpnInterface(vpnIfaceAdded.key().getName(),
 103                         optScfInfoForVpn.get().getScfTag());
 104             } catch (InterruptedException | ExecutionException e) {
 105                 LOG.error("Error reading the ServiceChaining information for VPN {}", vpnName, e);
 106             }
 107         }
 108     }
 109
 110 }