openstack/net-virt/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/NetworkHandler.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, Hsin-Yi Shen
   9  */
  10 package org.opendaylight.ovsdb.openstack.netvirt;
  11
  12 import org.opendaylight.controller.networkconfig.neutron.INeutronNetworkAware;
  13 import org.opendaylight.controller.networkconfig.neutron.INeutronNetworkCRUD;
  14 import org.opendaylight.controller.networkconfig.neutron.NeutronNetwork;
  15 import org.opendaylight.controller.sal.core.Node;
  16 import org.opendaylight.ovsdb.lib.notation.Row;
  17 import org.opendaylight.ovsdb.lib.notation.UUID;
  18 import org.opendaylight.ovsdb.openstack.netvirt.api.BridgeConfigurationManager;
  19 import org.opendaylight.ovsdb.openstack.netvirt.api.TenantNetworkManager;
  20 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  21 import org.opendaylight.ovsdb.plugin.api.OvsdbConfigurationService;
  22 import org.opendaylight.ovsdb.plugin.api.OvsdbConnectionService;
  23 import org.opendaylight.ovsdb.plugin.api.OvsdbInventoryListener;
  24 import org.opendaylight.ovsdb.schema.openvswitch.Interface;
  25 import org.opendaylight.ovsdb.schema.openvswitch.Port;
  26
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import java.net.HttpURLConnection;
  31 import java.util.List;
  32 import java.util.concurrent.ConcurrentMap;
  33
  34 /**
  35  * Handle requests for Neutron Network.
  36  */
  37 public class NetworkHandler extends AbstractHandler
  38                             implements INeutronNetworkAware {
  39
  40     public static final String NETWORK_TYPE_VXLAN = "vxlan";
  41     public static final String NETWORK_TYPE_GRE = "gre";
  42     public static final String NETWORK_TYPE_VLAN = "vlan";
  43
  44     /**
  45      * Logger instance.
  46      */
  47     static final Logger logger = LoggerFactory.getLogger(NetworkHandler.class);
  48
  49     // The implementation for each of these services is resolved by the OSGi Service Manager
  50     private volatile TenantNetworkManager tenantNetworkManager;
  51     private volatile BridgeConfigurationManager bridgeConfigurationManager;
  52     private volatile org.opendaylight.ovsdb.openstack.netvirt.api.ConfigurationService configurationService;
  53     private volatile OvsdbConfigurationService ovsdbConfigurationService;
  54     private volatile OvsdbConnectionService connectionService;
  55     private volatile INeutronNetworkCRUD neutronNetworkCache;
  56     private volatile OvsdbInventoryListener ovsdbInventoryListener;
  57     private volatile NeutronL3Adapter neutronL3Adapter;
  58
  59     /**
  60      * Invoked when a network creation is requested
  61      * to indicate if the specified network can be created.
  62      *
  63      * @param network  An instance of proposed new Neutron Network object.
  64      * @return A HTTP status code to the creation request.
  65      */
  66     @Override
  67     public int canCreateNetwork(NeutronNetwork network) {
  68         if (network.isShared()) {
  69             logger.error(" Network shared attribute not supported ");
  70             return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
  71         }
  72
  73         return HttpURLConnection.HTTP_CREATED;
  74     }
  75
  76     /**
  77      * Invoked to take action after a network has been created.
  78      *
  79      * @param network  An instance of new Neutron Network object.
  80      */
  81     @Override
  82     public void neutronNetworkCreated(NeutronNetwork network) {
  83         int result = HttpURLConnection.HTTP_BAD_REQUEST;
  84         logger.trace("neutronNetworkCreated: network: {}", network);
  85         result = canCreateNetwork(network);
  86         if (result != HttpURLConnection.HTTP_CREATED) {
  87             logger.debug("Network creation failed {} ", result);
  88             return;
  89         }
  90
  91         enqueueEvent(new NorthboundEvent(network, AbstractEvent.Action.ADD));
  92     }
  93     private void doNeutronNetworkCreated(NeutronNetwork network) {
  94         neutronL3Adapter.handleNeutronNetworkEvent(network, AbstractEvent.Action.ADD);
  95     }
  96
  97     /**
  98      * Invoked when a network update is requested
  99      * to indicate if the specified network can be changed
 100      * using the specified delta.
 101      *
 102      * @param delta     Updates to the network object using patch semantics.
 103      * @param original  An instance of the Neutron Network object
 104      *                  to be updated.
 105      * @return A HTTP status code to the update request.
 106      */
 107     @Override
 108     public int canUpdateNetwork(NeutronNetwork delta,
 109                                 NeutronNetwork original) {
 110         logger.trace("canUpdateNetwork: network delta {} --- original {}", delta, original);
 111         return HttpURLConnection.HTTP_OK;
 112     }
 113
 114     /**
 115      * Invoked to take action after a network has been updated.
 116      *
 117      * @param network An instance of modified Neutron Network object.
 118      */
 119     @Override
 120     public void neutronNetworkUpdated(NeutronNetwork network) {
 121         enqueueEvent(new NorthboundEvent(network, AbstractEvent.Action.UPDATE));
 122     }
 123     private void doNeutronNetworkUpdated(NeutronNetwork network) {
 124         neutronL3Adapter.handleNeutronNetworkEvent(network, AbstractEvent.Action.UPDATE);
 125     }
 126
 127     /**
 128      * Invoked when a network deletion is requested
 129      * to indicate if the specified network can be deleted.
 130      *
 131      * @param network  An instance of the Neutron Network object to be deleted.
 132      * @return A HTTP status code to the deletion request.
 133      */
 134     @Override
 135     public int canDeleteNetwork(NeutronNetwork network) {
 136         return HttpURLConnection.HTTP_OK;
 137     }
 138
 139     /**
 140      * Invoked to take action after a network has been deleted.
 141      *
 142      * @param network  An instance of deleted Neutron Network object.
 143      */
 144     @Override
 145     public void neutronNetworkDeleted(NeutronNetwork network) {
 146         enqueueEvent(new NorthboundEvent(network, AbstractEvent.Action.DELETE));
 147     }
 148     private void doNeutronNetworkDeleted(NeutronNetwork network) {
 149         neutronL3Adapter.handleNeutronNetworkEvent(network, AbstractEvent.Action.DELETE);
 150
 151         int result = canDeleteNetwork(network);
 152         logger.trace("canDeleteNetwork: network: {}", network);
 153         if  (result != HttpURLConnection.HTTP_OK) {
 154             logger.error(" deleteNetwork validation failed for result - {} ",
 155                     result);
 156             return;
 157         }
 158         /* Is this the last Neutron tenant network */
 159         List <NeutronNetwork> networks;
 160         if (neutronNetworkCache != null) {
 161             networks = neutronNetworkCache.getAllNetworks();
 162             if (networks.isEmpty()) {
 163                 logger.trace("neutronNetworkDeleted: last tenant network, delete tunnel ports...");
 164                 List<Node> nodes = connectionService.getNodes();
 165
 166                 for (Node node : nodes) {
 167                     List<String> phyIfName = bridgeConfigurationManager.getAllPhysicalInterfaceNames(node);
 168                     try {
 169                         ConcurrentMap<String, Row> ports =
 170                                 this.ovsdbConfigurationService.getRows(node,
 171                                                                 ovsdbConfigurationService.getTableName(node, Port.class));
 172                         if (ports != null) {
 173                             for (Row portRow : ports.values()) {
 174                                 Port port = ovsdbConfigurationService.getTypedRow(node, Port.class, portRow);
 175                                 for (UUID interfaceUuid : port.getInterfacesColumn().getData()) {
 176                                     Interface interfaceRow = (Interface) ovsdbConfigurationService
 177                                             .getRow(node,
 178                                                     ovsdbConfigurationService.getTableName(node, Interface.class),
 179                                                     interfaceUuid.toString());
 180
 181                                     String interfaceType = interfaceRow.getTypeColumn().getData();
 182                                     if (interfaceType.equalsIgnoreCase(NetworkHandler.NETWORK_TYPE_VXLAN)
 183                                         || interfaceType.equalsIgnoreCase(
 184                                             NetworkHandler.NETWORK_TYPE_GRE)) {
 185                                         /* delete tunnel ports on this node */
 186                                         logger.trace("Delete tunnel interface {}", interfaceRow);
 187                                         ovsdbConfigurationService.deleteRow(node,
 188                                                                      ovsdbConfigurationService.getTableName(node, Port.class),
 189                                                                      port.getUuid().toString());
 190                                         break;
 191                                     } else if (!phyIfName.isEmpty() && phyIfName.contains(interfaceRow.getName())) {
 192                                         logger.trace("Delete physical interface {}", interfaceRow);
 193                                         ovsdbConfigurationService.deleteRow(node,
 194                                                                      ovsdbConfigurationService.getTableName(node, Port.class),
 195                                                                      port.getUuid().toString());
 196                                         break;
 197                                     }
 198                                 }
 199                             }
 200                         }
 201                     } catch (Exception e) {
 202                         logger.error("Exception during handlingNeutron network delete");
 203                     }
 204                 }
 205             }
 206         }
 207         tenantNetworkManager.networkDeleted(network.getID());
 208     }
 209
 210     /**
 211      * Process the event.
 212      *
 213      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
 214      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
 215      */
 216     @Override
 217     public void processEvent(AbstractEvent abstractEvent) {
 218         if (!(abstractEvent instanceof NorthboundEvent)) {
 219             logger.error("Unable to process abstract event " + abstractEvent);
 220             return;
 221         }
 222         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
 223         switch (ev.getAction()) {
 224             case ADD:
 225                 doNeutronNetworkCreated(ev.getNeutronNetwork());
 226                 break;
 227             case UPDATE:
 228                 doNeutronNetworkUpdated(ev.getNeutronNetwork());
 229                 break;
 230             case DELETE:
 231                 doNeutronNetworkDeleted(ev.getNeutronNetwork());
 232                 break;
 233             default:
 234                 logger.warn("Unable to process event action " + ev.getAction());
 235                 break;
 236         }
 237     }
 238
 239 }