openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/SubnetHandler.java

   1 /*
   2  * Copyright (C) 2013 Red Hat, Inc.
   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  * Authors : Madhu Venugopal, Brent Salisbury
   9  */
  10
  11 package org.opendaylight.ovsdb.openstack.netvirt;
  12
  13 import org.opendaylight.neutron.spi.INeutronSubnetAware;
  14 import org.opendaylight.neutron.spi.NeutronSubnet;
  15 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  16 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  17
  18 import com.google.common.base.Preconditions;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 import java.net.HttpURLConnection;
  23
  24 public class SubnetHandler extends AbstractHandler implements INeutronSubnetAware {
  25
  26     static final Logger logger = LoggerFactory.getLogger(SubnetHandler.class);
  27
  28     // The implementation for each of these services is resolved by the OSGi Service Manager
  29     private volatile NeutronL3Adapter neutronL3Adapter;
  30
  31     @Override
  32     public int canCreateSubnet(NeutronSubnet subnet) {
  33         return HttpURLConnection.HTTP_OK;
  34     }
  35
  36     @Override
  37     public void neutronSubnetCreated(NeutronSubnet subnet) {
  38         enqueueEvent(new NorthboundEvent(subnet, Action.ADD));
  39     }
  40
  41     @Override
  42     public int canUpdateSubnet(NeutronSubnet delta, NeutronSubnet original) {
  43         return HttpURLConnection.HTTP_OK;
  44     }
  45
  46     @Override
  47     public void neutronSubnetUpdated(NeutronSubnet subnet) {
  48         enqueueEvent(new NorthboundEvent(subnet, Action.UPDATE));
  49     }
  50
  51     @Override
  52     public int canDeleteSubnet(NeutronSubnet subnet) {
  53         return HttpURLConnection.HTTP_OK;
  54     }
  55
  56     @Override
  57     public void neutronSubnetDeleted(NeutronSubnet subnet) {
  58         enqueueEvent(new NorthboundEvent(subnet, Action.DELETE));
  59     }
  60
  61     /**
  62      * Process the event.
  63      *
  64      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
  65      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
  66      */
  67     @Override
  68     public void processEvent(AbstractEvent abstractEvent) {
  69         if (!(abstractEvent instanceof NorthboundEvent)) {
  70             logger.error("Unable to process abstract event " + abstractEvent);
  71             return;
  72         }
  73         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
  74         switch (ev.getAction()) {
  75             case ADD:
  76                 // fall through
  77             case DELETE:
  78                 // fall through
  79             case UPDATE:
  80                 Preconditions.checkNotNull(neutronL3Adapter);
  81                 neutronL3Adapter.handleNeutronSubnetEvent(ev.getSubnet(), ev.getAction());
  82                 break;
  83             default:
  84                 logger.warn("Unable to process event action " + ev.getAction());
  85                 break;
  86         }
  87     }
  88 }