dhcpservice/impl/src/main/java/org/opendaylight/netvirt/dhcpservice/DhcpConfigListener.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.dhcpservice;
   9
  10 import javax.annotation.PostConstruct;
  11 import javax.annotation.PreDestroy;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.eclipse.jdt.annotation.Nullable;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  18 import org.opendaylight.netvirt.dhcpservice.api.DhcpMConstants;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.DhcpConfig;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.dhcp.config.Configs;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 @Singleton
  26 public class DhcpConfigListener extends AsyncClusteredDataTreeChangeListenerBase<DhcpConfig, DhcpConfigListener> {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(DhcpConfigListener.class);
  29
  30     private final DhcpManager dhcpManager;
  31     private final DataBroker dataBroker;
  32
  33     @Inject
  34     public DhcpConfigListener(final DataBroker db, final DhcpManager dhcpMgr) {
  35         super(DhcpConfig.class, DhcpConfigListener.class);
  36         dhcpManager = dhcpMgr;
  37         this.dataBroker = db;
  38     }
  39
  40     @PostConstruct
  41     public void init() {
  42         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  43     }
  44
  45     @Override
  46     protected InstanceIdentifier<DhcpConfig> getWildCardPath() {
  47         return InstanceIdentifier.create(DhcpConfig.class);
  48     }
  49
  50     @Override
  51     @PreDestroy
  52     public void close() {
  53         super.close();
  54         LOG.debug("DhcpConfig Listener Closed");
  55     }
  56
  57     @Override
  58     protected void remove(InstanceIdentifier<DhcpConfig> identifier, DhcpConfig del) {
  59         LOG.trace("DhcpConfig removed: {}", del);
  60         updateConfig(null);
  61     }
  62
  63     @Override
  64     protected void update(InstanceIdentifier<DhcpConfig> identifier, DhcpConfig original, DhcpConfig update) {
  65         LOG.trace("DhcpConfig changed to {}", update);
  66         updateConfig(update);
  67     }
  68
  69     @Override
  70     protected void add(InstanceIdentifier<DhcpConfig> identifier, DhcpConfig add) {
  71         LOG.trace("DhcpConfig added {}", add);
  72         updateConfig(add);
  73     }
  74
  75     private void updateConfig(@Nullable DhcpConfig update) {
  76         //TODO: Update operational with actual values
  77         if (update == null || update.getConfigs() == null || update.getConfigs().isEmpty()) {
  78             dhcpManager.setLeaseDuration(DhcpMConstants.DEFAULT_LEASE_TIME);
  79             dhcpManager.setDefaultDomain(DhcpMConstants.DEFAULT_DOMAIN_NAME);
  80             return;
  81         }
  82         Configs config = update.getConfigs().get(0);
  83         if (config.getLeaseDuration() != null) {
  84             dhcpManager.setLeaseDuration(config.getLeaseDuration());
  85         }
  86         if (config.getDefaultDomain() != null) {
  87             dhcpManager.setDefaultDomain(config.getDefaultDomain());
  88             //TODO: What to do if string is ""
  89         }
  90     }
  91
  92     @Override
  93     protected DhcpConfigListener getDataTreeChangeListener() {
  94         return DhcpConfigListener.this;
  95     }
  96 }