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 org.opendaylight.neutron.spi.INeutronPortAware;
  13 import org.opendaylight.neutron.spi.NeutronPort;
  14 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  15 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
  16 import org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher;
  17 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
  18 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  19 import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  22 import org.osgi.framework.BundleContext;
  23 import org.osgi.framework.ServiceReference;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import java.net.HttpURLConnection;
  28 import java.util.List;
  29
  30 /**
  31  * Handle requests for Neutron Port.
  32  */
  33 public class PortHandler extends AbstractHandler implements INeutronPortAware, ConfigInterface {
  34     static final Logger logger = LoggerFactory.getLogger(PortHandler.class);
  35
  36     // The implementation for each of these services is resolved by the OSGi Service Manager
  37     private volatile NodeCacheManager nodeCacheManager;
  38     private volatile NeutronL3Adapter neutronL3Adapter;
  39     private volatile EventDispatcher eventDispatcher;
  40
  41     /**
  42      * Invoked when a port creation is requested
  43      * to indicate if the specified port can be created.
  44      *
  45      * @param port     An instance of proposed new Port object.
  46      * @return A HTTP status code to the creation request.
  47      */
  48     @Override
  49     public int canCreatePort(NeutronPort port) {
  50         return HttpURLConnection.HTTP_OK;
  51     }
  52
  53     /**
  54      * Invoked to take action after a port has been created.
  55      *
  56      * @param neutronPort An instance of new Neutron Port object.
  57      */
  58     @Override
  59     public void neutronPortCreated(NeutronPort neutronPort) {
  60         enqueueEvent(new NorthboundEvent(neutronPort, Action.ADD));
  61     }
  62     private void doNeutronPortCreated(NeutronPort neutronPort) {
  63         logger.debug(" Port-ADD successful for tenant-id - {}," +
  64                      " 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         logger.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         logger.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 = MdsalUtils.getTerminationPointsOfBridge(node);
 129                 for (OvsdbTerminationPointAugmentation port : ports) {
 130                     String neutronPortId =
 131                             MdsalUtils.getInterfaceExternalIdsValue(port, Constants.EXTERNAL_ID_INTERFACE_ID);
 132                     if (neutronPortId != null && neutronPortId.equalsIgnoreCase(neutronPort.getPortUUID())) {
 133                         logger.trace("neutronPortDeleted: Delete interface {}", port.getName());
 134                         MdsalUtils.deleteTerminationPoint(node, port.getName());
 135                         break;
 136                     }
 137                 }
 138             } catch (Exception e) {
 139                 logger.error("Exception during handlingNeutron port delete", e);
 140             }
 141         }
 142         logger.debug(" PORT delete successful for tenant-id - {}, " +
 143                      " network-id - {}, port-id - {}",
 144                      neutronPort.getTenantID(), neutronPort.getNetworkUUID(),
 145                      neutronPort.getID());
 146     }
 147
 148     /**
 149      * Process the event.
 150      *
 151      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
 152      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
 153      */
 154     @Override
 155     public void processEvent(AbstractEvent abstractEvent) {
 156         if (!(abstractEvent instanceof NorthboundEvent)) {
 157             logger.error("Unable to process abstract event " + abstractEvent);
 158             return;
 159         }
 160         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
 161         switch (ev.getAction()) {
 162             case ADD:
 163                 doNeutronPortCreated(ev.getPort());
 164                 break;
 165             case DELETE:
 166                 doNeutronPortDeleted(ev.getPort());
 167                 break;
 168             case UPDATE:
 169                 doNeutronPortUpdated(ev.getPort());
 170                 break;
 171             default:
 172                 logger.warn("Unable to process event action " + ev.getAction());
 173                 break;
 174         }
 175     }
 176
 177     @Override
 178     public void setDependencies(BundleContext bundleContext, ServiceReference serviceReference) {
 179         nodeCacheManager =
 180                 (NodeCacheManager) ServiceHelper.getGlobalInstance(NodeCacheManager.class, this);
 181         neutronL3Adapter =
 182                 (NeutronL3Adapter) ServiceHelper.getGlobalInstance(NeutronL3Adapter.class, this);
 183         eventDispatcher =
 184                 (EventDispatcher) ServiceHelper.getGlobalInstance(EventDispatcher.class, this);
 185         eventDispatcher.eventHandlerAdded(
 186                 bundleContext.getServiceReference(INeutronPortAware.class.getName()), this);
 187         super.setDispatcher(eventDispatcher);
 188     }
 189
 190     @Override
 191     public void setDependencies(Object impl) {}
 192 }