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.api.EventDispatcher;
  17 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  18
  19 import com.google.common.base.Preconditions;
  20 import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
  21 import org.osgi.framework.BundleContext;
  22 import org.osgi.framework.ServiceReference;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 import java.net.HttpURLConnection;
  27
  28 public class SubnetHandler extends AbstractHandler implements INeutronSubnetAware, ConfigInterface {
  29
  30     static final Logger logger = LoggerFactory.getLogger(SubnetHandler.class);
  31
  32     // The implementation for each of these services is resolved by the OSGi Service Manager
  33     private volatile NeutronL3Adapter neutronL3Adapter;
  34     private EventDispatcher eventDispatcher;
  35
  36     @Override
  37     public int canCreateSubnet(NeutronSubnet subnet) {
  38         return HttpURLConnection.HTTP_OK;
  39     }
  40
  41     @Override
  42     public void neutronSubnetCreated(NeutronSubnet subnet) {
  43         enqueueEvent(new NorthboundEvent(subnet, Action.ADD));
  44     }
  45
  46     @Override
  47     public int canUpdateSubnet(NeutronSubnet delta, NeutronSubnet original) {
  48         return HttpURLConnection.HTTP_OK;
  49     }
  50
  51     @Override
  52     public void neutronSubnetUpdated(NeutronSubnet subnet) {
  53         enqueueEvent(new NorthboundEvent(subnet, Action.UPDATE));
  54     }
  55
  56     @Override
  57     public int canDeleteSubnet(NeutronSubnet subnet) {
  58         return HttpURLConnection.HTTP_OK;
  59     }
  60
  61     @Override
  62     public void neutronSubnetDeleted(NeutronSubnet subnet) {
  63         enqueueEvent(new NorthboundEvent(subnet, Action.DELETE));
  64     }
  65
  66     /**
  67      * Process the event.
  68      *
  69      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
  70      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
  71      */
  72     @Override
  73     public void processEvent(AbstractEvent abstractEvent) {
  74         if (!(abstractEvent instanceof NorthboundEvent)) {
  75             logger.error("Unable to process abstract event " + abstractEvent);
  76             return;
  77         }
  78         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
  79         switch (ev.getAction()) {
  80             case ADD:
  81                 // fall through
  82             case DELETE:
  83                 // fall through
  84             case UPDATE:
  85                 Preconditions.checkNotNull(neutronL3Adapter);
  86                 neutronL3Adapter.handleNeutronSubnetEvent(ev.getSubnet(), ev.getAction());
  87                 break;
  88             default:
  89                 logger.warn("Unable to process event action " + ev.getAction());
  90                 break;
  91         }
  92     }
  93
  94     @Override
  95     public void setDependencies(BundleContext bundleContext, ServiceReference serviceReference) {
  96         neutronL3Adapter =
  97                 (NeutronL3Adapter) ServiceHelper.getGlobalInstance(NeutronL3Adapter.class, this);
  98         eventDispatcher =
  99                 (EventDispatcher) ServiceHelper.getGlobalInstance(EventDispatcher.class, this);
 100         eventDispatcher.eventHandlerAdded(
 101                 bundleContext.getServiceReference(INeutronSubnetAware.class.getName()), this);
 102         super.setDispatcher(eventDispatcher);
 103     }
 104
 105     @Override
 106     public void setDependencies(Object impl) {
 107
 108     }
 109 }