openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/translator/iaware/impl/NeutronSubnetChangeListener.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications Systems, Inc. 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.ovsdb.openstack.netvirt.translator.iaware.impl;
   9
  10 import java.util.ArrayList;
  11 import java.util.HashSet;
  12 import java.util.List;
  13 import java.util.Map.Entry;
  14 import java.util.Set;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  19 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronPort;
  22 import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronSubnet;
  23 import org.opendaylight.ovsdb.openstack.netvirt.translator.NeutronSubnetIPAllocationPool;
  24 import org.opendaylight.ovsdb.openstack.netvirt.translator.Neutron_IPs;
  25 import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.INeutronPortCRUD;
  26 import org.opendaylight.ovsdb.openstack.netvirt.translator.crud.NeutronCRUDInterfaces;
  27 import org.opendaylight.ovsdb.openstack.netvirt.translator.iaware.INeutronSubnetAware;
  28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.Dhcpv6Base;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.Dhcpv6Off;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.Dhcpv6Slaac;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.Dhcpv6Stateful;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.Dhcpv6Stateless;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.IpVersionBase;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.IpVersionV4;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.constants.rev150712.IpVersionV6;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnet.attributes.AllocationPools;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.Subnets;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.subnets.rev150712.subnets.attributes.subnets.Subnet;
  41 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  42 import org.opendaylight.yangtools.yang.binding.DataObject;
  43 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  44 import org.slf4j.Logger;
  45 import org.slf4j.LoggerFactory;
  46
  47 import com.google.common.collect.ImmutableBiMap;
  48
  49 public class NeutronSubnetChangeListener implements DataChangeListener, AutoCloseable{
  50     private static final Logger LOG = LoggerFactory.getLogger(NeutronSubnetChangeListener.class);
  51
  52     private static final ImmutableBiMap<Class<? extends IpVersionBase>,Integer> IPV_MAP
  53     = new ImmutableBiMap.Builder<Class<? extends IpVersionBase>,Integer>()
  54     .put(IpVersionV4.class, 4)
  55     .put(IpVersionV6.class, 6)
  56     .build();
  57
  58     private static final ImmutableBiMap<Class<? extends Dhcpv6Base>,String> DHCPV6_MAP
  59     = new ImmutableBiMap.Builder<Class<? extends Dhcpv6Base>,String>()
  60     .put(Dhcpv6Off.class,"off")
  61     .put(Dhcpv6Stateful.class,"dhcpv6-stateful")
  62     .put(Dhcpv6Slaac.class,"slaac")
  63     .put(Dhcpv6Stateless.class,"dhcpv6-stateless")
  64     .build();
  65
  66     private ListenerRegistration<DataChangeListener> registration;
  67     private DataBroker db;
  68
  69     public NeutronSubnetChangeListener(DataBroker db){
  70         this.db = db;
  71         InstanceIdentifier<Subnet> path = InstanceIdentifier
  72                 .create(Neutron.class)
  73                 .child(Subnets.class)
  74                 .child(Subnet.class);
  75         LOG.debug("Register listener for Neutron Subnet model data changes");
  76         registration =
  77                 this.db.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION, path, this, DataChangeScope.ONE);
  78
  79     }
  80
  81     @Override
  82     public void onDataChanged(
  83             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
  84         LOG.trace("Data changes : {}",changes);
  85
  86         Object[] subscribers = NeutronIAwareUtil.getInstances(INeutronSubnetAware.class, this);
  87         createSubnet(changes, subscribers);
  88         updateSubnet(changes, subscribers);
  89         deleteSubnet(changes, subscribers);
  90     }
  91
  92     private void createSubnet(
  93             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
  94             Object[] subscribers) {
  95         for (Entry<InstanceIdentifier<?>, DataObject> newSubnet : changes.getCreatedData().entrySet()) {
  96                 if(newSubnet.getValue() instanceof Subnet){
  97                 NeutronSubnet subnet = fromMd((Subnet)newSubnet.getValue());
  98                 for(Object entry: subscribers){
  99                     INeutronSubnetAware subscriber = (INeutronSubnetAware)entry;
 100                     subscriber.neutronSubnetCreated(subnet);
 101                 }
 102                 }
 103         }
 104     }
 105
 106     private void updateSubnet(
 107             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
 108             Object[] subscribers) {
 109         for (Entry<InstanceIdentifier<?>, DataObject> updateSubnet : changes.getUpdatedData().entrySet()) {
 110                 if(updateSubnet.getValue() instanceof Subnet){
 111                 NeutronSubnet subnet = fromMd((Subnet)updateSubnet.getValue());
 112                 for(Object entry: subscribers){
 113                     INeutronSubnetAware subscriber = (INeutronSubnetAware)entry;
 114                     subscriber.neutronSubnetUpdated(subnet);
 115                 }
 116                 }
 117         }
 118     }
 119
 120     private void deleteSubnet(
 121             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,
 122             Object[] subscribers) {
 123         for (InstanceIdentifier<?> deletedSubnetPath : changes.getRemovedPaths()) {
 124                 if(deletedSubnetPath.getTargetType().equals(Subnet.class)){
 125                 NeutronSubnet subnet = fromMd((Subnet)changes.getOriginalData().get(deletedSubnetPath));
 126                 for(Object entry: subscribers){
 127                     INeutronSubnetAware subscriber = (INeutronSubnetAware)entry;
 128                     subscriber.neutronSubnetDeleted(subnet);
 129                 }
 130                 }
 131         }
 132     }
 133
 134     /*
 135      * This method is borrowed from NeutronSubnetInterface.java class of Neutron Northbound class.
 136      * We will be utilizing similar code from other classes from the same package of neutron project.
 137      */
 138     private NeutronSubnet fromMd(Subnet subnet) {
 139         NeutronSubnet result = new NeutronSubnet();
 140         result.setName(subnet.getName());
 141         if (subnet.getTenantId() != null) {
 142             result.setTenantID(String.valueOf(subnet.getTenantId().getValue()).replace("-",""));
 143         }
 144         result.setNetworkUUID(subnet.getNetworkId().getValue());
 145         result.setIpVersion(IPV_MAP.get(subnet.getIpVersion()));
 146         result.setCidr(subnet.getCidr());
 147         if (subnet.getGatewayIp() != null) {
 148             result.setGatewayIP(String.valueOf(subnet.getGatewayIp().getValue()));
 149         }
 150         if (subnet.getIpv6RaMode() != null) {
 151             result.setIpV6RaMode(DHCPV6_MAP.get(subnet.getIpv6RaMode()));
 152         }
 153         if (subnet.getIpv6AddressMode() != null) {
 154             result.setIpV6AddressMode(DHCPV6_MAP.get(subnet.getIpv6AddressMode()));
 155         }
 156         result.setEnableDHCP(subnet.isEnableDhcp());
 157         if (subnet.getAllocationPools() != null) {
 158             List<NeutronSubnetIPAllocationPool> allocationPools = new ArrayList<>();
 159             for (AllocationPools allocationPool : subnet.getAllocationPools()) {
 160                 NeutronSubnetIPAllocationPool pool = new NeutronSubnetIPAllocationPool();
 161                 pool.setPoolStart(allocationPool.getStart());
 162                 pool.setPoolEnd(allocationPool.getEnd());
 163                 allocationPools.add(pool);
 164             }
 165             result.setAllocationPools(allocationPools);
 166         }
 167         if (subnet.getDnsNameservers() != null) {
 168             List<String> dnsNameServers = new ArrayList<>();
 169             for (IpAddress dnsNameServer : subnet.getDnsNameservers()) {
 170                 dnsNameServers.add(String.valueOf(dnsNameServer.getValue()));
 171             }
 172             result.setDnsNameservers(dnsNameServers);
 173         }
 174         result.setID(subnet.getUuid().getValue());
 175
 176         // read through the ports and put the ones in this subnet into the internal
 177         // myPorts object.
 178        Set<NeutronPort> allPorts = new HashSet<>();
 179         NeutronCRUDInterfaces interfaces = new NeutronCRUDInterfaces()
 180             .fetchINeutronPortCRUD(this);
 181         INeutronPortCRUD portIf = interfaces.getPortInterface();
 182         for (NeutronPort port : portIf.getAllPorts()) {
 183             if (port.getFixedIPs() != null) {
 184                 for (Neutron_IPs ip : port.getFixedIPs()) {
 185                     if (ip.getSubnetUUID().equals(result.getID())) {
 186                         allPorts.add(port);
 187                     }
 188                 }
 189             }
 190         }
 191         List<NeutronPort> ports = new ArrayList<>();
 192         ports.addAll(allPorts);
 193         result.setPorts(ports);
 194         return result;
 195     }
 196
 197     @Override
 198     public void close() throws Exception {
 199         registration.close();
 200     }
 201
 202 }