openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/PortHandler.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 package org.opendaylight.ovsdb.openstack.netvirt;
  11
  12 import java.net.HttpURLConnection;
  13 import java.util.List;
  14
  15 import org.opendaylight.neutron.spi.INeutronPortAware;
  16 import org.opendaylight.neutron.spi.NeutronPort;
  17 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  18 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
  19 import org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher;
  20 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
  21 import org.opendaylight.ovsdb.openstack.netvirt.api.Southbound;
  22 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  23 import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  26 import org.osgi.framework.BundleContext;
  27 import org.osgi.framework.ServiceReference;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 /**
  32  * Handle requests for Neutron Port.
  33  */
  34 public class PortHandler extends AbstractHandler implements INeutronPortAware, ConfigInterface {
  35     private static final Logger LOG = LoggerFactory.getLogger(PortHandler.class);
  36
  37     // The implementation for each of these services is resolved by the OSGi Service Manager
  38     private volatile NodeCacheManager nodeCacheManager;
  39     private volatile NeutronL3Adapter neutronL3Adapter;
  40     private volatile Southbound southbound;
  41
  42     /**
  43      * Invoked when a port creation is requested
  44      * to indicate if the specified port can be created.
  45      *
  46      * @param port     An instance of proposed new Port object.
  47      * @return A HTTP status code to the creation request.
  48      */
  49     @Override
  50     public int canCreatePort(NeutronPort port) {
  51         return HttpURLConnection.HTTP_OK;
  52     }
  53
  54     /**
  55      * Invoked to take action after a port has been created.
  56      *
  57      * @param neutronPort An instance of new Neutron Port object.
  58      */
  59     @Override
  60     public void neutronPortCreated(NeutronPort neutronPort) {
  61         enqueueEvent(new NorthboundEvent(neutronPort, Action.ADD));
  62     }
  63     private void doNeutronPortCreated(NeutronPort neutronPort) {
  64         LOG.debug(" Port-ADD successful for tenant-id - {}, network-id - {}, port-id - {}",
  65                      neutronPort.getTenantID(), neutronPort.getNetworkUUID(),
  66                      neutronPort.getID());
  67         neutronL3Adapter.handleNeutronPortEvent(neutronPort, Action.ADD);
  68     }
  69
  70     /**
  71      * Invoked when a port update is requested
  72      * to indicate if the specified port can be changed
  73      * using the specified delta.
  74      *
  75      * @param delta    Updates to the port object using patch semantics.
  76      * @param original An instance of the Neutron Port object
  77      *                  to be updated.
  78      * @return A HTTP status code to the update request.
  79      */
  80     @Override
  81     public int canUpdatePort(NeutronPort delta,
  82                              NeutronPort original) {
  83         return HttpURLConnection.HTTP_OK;
  84     }
  85
  86     /**
  87      * Invoked to take action after a port has been updated.
  88      *
  89      * @param neutronPort An instance of modified Neutron Port object.
  90      */
  91     @Override
  92     public void neutronPortUpdated(NeutronPort neutronPort) {
  93         enqueueEvent(new NorthboundEvent(neutronPort, Action.UPDATE));
  94     }
  95     private void doNeutronPortUpdated(NeutronPort neutronPort) {
  96         LOG.debug("Handling neutron update port {}", neutronPort);
  97         neutronL3Adapter.handleNeutronPortEvent(neutronPort, Action.UPDATE);
  98     }
  99
 100     /**
 101      * Invoked when a port deletion is requested
 102      * to indicate if the specified port can be deleted.
 103      *
 104      * @param port     An instance of the Neutron Port object to be deleted.
 105      * @return A HTTP status code to the deletion request.
 106      */
 107     @Override
 108     public int canDeletePort(NeutronPort port) {
 109         return HttpURLConnection.HTTP_OK;
 110     }
 111
 112     /**
 113      * Invoked to take action after a port has been deleted.
 114      *
 115      * @param neutronPort  An instance of deleted Neutron Port object.
 116      */
 117     @Override
 118     public void neutronPortDeleted(NeutronPort neutronPort) {
 119         enqueueEvent(new NorthboundEvent(neutronPort, Action.DELETE));
 120     }
 121     private void doNeutronPortDeleted(NeutronPort neutronPort) {
 122         LOG.debug("Handling neutron delete port {}", neutronPort);
 123         neutronL3Adapter.handleNeutronPortEvent(neutronPort, Action.DELETE);
 124         //TODO: Need to implement getNodes
 125         List<Node> nodes = nodeCacheManager.getNodes();
 126         for (Node node : nodes) {
 127             try {
 128                 List<OvsdbTerminationPointAugmentation> ports = southbound.getTerminationPointsOfBridge(node);
 129                 for (OvsdbTerminationPointAugmentation port : ports) {
 130                     String neutronPortId =
 131                             southbound.getInterfaceExternalIdsValue(port, Constants.EXTERNAL_ID_INTERFACE_ID);
 132                     if (neutronPortId != null && neutronPortId.equalsIgnoreCase(neutronPort.getPortUUID())) {
 133                         LOG.trace("neutronPortDeleted: Delete interface {}", port.getName());
 134                         southbound.deleteTerminationPoint(node, port.getName());
 135                         break;
 136                     }
 137                 }
 138             } catch (Exception e) {
 139                 LOG.error("Exception during handlingNeutron port delete", e);
 140             }
 141         }
 142         LOG.debug(" PORT delete successful for tenant-id - {}, network-id - {}, port-id - {}",
 143                      neutronPort.getTenantID(), neutronPort.getNetworkUUID(),
 144                      neutronPort.getID());
 145     }
 146
 147     /**
 148      * Process the event.
 149      *
 150      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
 151      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
 152      */
 153     @Override
 154     public void processEvent(AbstractEvent abstractEvent) {
 155         if (!(abstractEvent instanceof NorthboundEvent)) {
 156             LOG.error("Unable to process abstract event {}", abstractEvent);
 157             return;
 158         }
 159         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
 160         switch (ev.getAction()) {
 161             case ADD:
 162                 doNeutronPortCreated(ev.getPort());
 163                 break;
 164             case DELETE:
 165                 doNeutronPortDeleted(ev.getPort());
 166                 break;
 167             case UPDATE:
 168                 doNeutronPortUpdated(ev.getPort());
 169                 break;
 170             default:
 171                 LOG.warn("Unable to process event action {}", ev.getAction());
 172                 break;
 173         }
 174     }
 175
 176     @Override
 177     public void setDependencies(BundleContext bundleContext, ServiceReference serviceReference) {
 178         nodeCacheManager =
 179                 (NodeCacheManager) ServiceHelper.getGlobalInstance(NodeCacheManager.class, this);
 180         neutronL3Adapter =
 181                 (NeutronL3Adapter) ServiceHelper.getGlobalInstance(NeutronL3Adapter.class, this);
 182         southbound =
 183                 (Southbound) ServiceHelper.getGlobalInstance(Southbound.class, this);
 184         eventDispatcher =
 185                 (EventDispatcher) ServiceHelper.getGlobalInstance(EventDispatcher.class, this);
 186         eventDispatcher.eventHandlerAdded(
 187                 bundleContext.getServiceReference(INeutronPortAware.class.getName()), this);
 188     }
 189
 190     @Override
 191     public void setDependencies(Object impl) {}
 192 }