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