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.Action;
  19 import org.opendaylight.ovsdb.openstack.netvirt.api.BridgeConfigurationManager;
  20 import org.opendaylight.ovsdb.openstack.netvirt.api.TenantNetworkManager;
  21 import org.opendaylight.ovsdb.openstack.netvirt.impl.NeutronL3Adapter;
  22 import org.opendaylight.ovsdb.plugin.api.OvsdbConfigurationService;
  23 import org.opendaylight.ovsdb.plugin.api.OvsdbConnectionService;
  24 import org.opendaylight.ovsdb.plugin.api.OvsdbInventoryListener;
  25 import org.opendaylight.ovsdb.schema.openvswitch.Interface;
  26 import org.opendaylight.ovsdb.schema.openvswitch.Port;
  27
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import java.net.HttpURLConnection;
  32 import java.util.List;
  33 import java.util.concurrent.ConcurrentMap;
  34
  35 /**
  36  * Handle requests for Neutron Network.
  37  */
  38 public class NetworkHandler extends AbstractHandler
  39                             implements INeutronNetworkAware {
  40
  41     public static final String NETWORK_TYPE_VXLAN = "vxlan";
  42     public static final String NETWORK_TYPE_GRE = "gre";
  43     public static final String NETWORK_TYPE_VLAN = "vlan";
  44
  45     /**
  46      * Logger instance.
  47      */
  48     static final Logger logger = LoggerFactory.getLogger(NetworkHandler.class);
  49
  50     // The implementation for each of these services is resolved by the OSGi Service Manager
  51     private volatile TenantNetworkManager tenantNetworkManager;
  52     private volatile BridgeConfigurationManager bridgeConfigurationManager;
  53     private volatile org.opendaylight.ovsdb.openstack.netvirt.api.ConfigurationService configurationService;
  54     private volatile OvsdbConfigurationService ovsdbConfigurationService;
  55     private volatile OvsdbConnectionService connectionService;
  56     private volatile INeutronNetworkCRUD neutronNetworkCache;
  57     private volatile OvsdbInventoryListener ovsdbInventoryListener;
  58     private volatile NeutronL3Adapter neutronL3Adapter;
  59
  60     /**
  61      * Invoked when a network creation is requested
  62      * to indicate if the specified network can be created.
  63      *
  64      * @param network  An instance of proposed new Neutron Network object.
  65      * @return A HTTP status code to the creation request.
  66      */
  67     @Override
  68     public int canCreateNetwork(NeutronNetwork network) {
  69         if (network.isShared()) {
  70             logger.error(" Network shared attribute not supported ");
  71             return HttpURLConnection.HTTP_NOT_ACCEPTABLE;
  72         }
  73
  74         return HttpURLConnection.HTTP_CREATED;
  75     }
  76
  77     /**
  78      * Invoked to take action after a network has been created.
  79      *
  80      * @param network  An instance of new Neutron Network object.
  81      */
  82     @Override
  83     public void neutronNetworkCreated(NeutronNetwork network) {
  84         int result = HttpURLConnection.HTTP_BAD_REQUEST;
  85         logger.trace("neutronNetworkCreated: network: {}", network);
  86         result = canCreateNetwork(network);
  87         if (result != HttpURLConnection.HTTP_CREATED) {
  88             logger.debug("Network creation failed {} ", result);
  89             return;
  90         }
  91
  92         enqueueEvent(new NorthboundEvent(network, Action.ADD));
  93     }
  94     private void doNeutronNetworkCreated(NeutronNetwork network) {
  95         neutronL3Adapter.handleNeutronNetworkEvent(network, Action.ADD);
  96     }
  97
  98     /**
  99      * Invoked when a network update is requested
 100      * to indicate if the specified network can be changed
 101      * using the specified delta.
 102      *
 103      * @param delta     Updates to the network object using patch semantics.
 104      * @param original  An instance of the Neutron Network object
 105      *                  to be updated.
 106      * @return A HTTP status code to the update request.
 107      */
 108     @Override
 109     public int canUpdateNetwork(NeutronNetwork delta,
 110                                 NeutronNetwork original) {
 111         logger.trace("canUpdateNetwork: network delta {} --- original {}", delta, original);
 112         return HttpURLConnection.HTTP_OK;
 113     }
 114
 115     /**
 116      * Invoked to take action after a network has been updated.
 117      *
 118      * @param network An instance of modified Neutron Network object.
 119      */
 120     @Override
 121     public void neutronNetworkUpdated(NeutronNetwork network) {
 122         enqueueEvent(new NorthboundEvent(network, Action.UPDATE));
 123     }
 124     private void doNeutronNetworkUpdated(NeutronNetwork network) {
 125         neutronL3Adapter.handleNeutronNetworkEvent(network, Action.UPDATE);
 126     }
 127
 128     /**
 129      * Invoked when a network deletion is requested
 130      * to indicate if the specified network can be deleted.
 131      *
 132      * @param network  An instance of the Neutron Network object to be deleted.
 133      * @return A HTTP status code to the deletion request.
 134      */
 135     @Override
 136     public int canDeleteNetwork(NeutronNetwork network) {
 137         return HttpURLConnection.HTTP_OK;
 138     }
 139
 140     /**
 141      * Invoked to take action after a network has been deleted.
 142      *
 143      * @param network  An instance of deleted Neutron Network object.
 144      */
 145     @Override
 146     public void neutronNetworkDeleted(NeutronNetwork network) {
 147         enqueueEvent(new NorthboundEvent(network, Action.DELETE));
 148     }
 149     private void doNeutronNetworkDeleted(NeutronNetwork network) {
 150         neutronL3Adapter.handleNeutronNetworkEvent(network, Action.DELETE);
 151
 152         int result = canDeleteNetwork(network);
 153         logger.trace("canDeleteNetwork: network: {}", network);
 154         if  (result != HttpURLConnection.HTTP_OK) {
 155             logger.error(" deleteNetwork validation failed for result - {} ",
 156                     result);
 157             return;
 158         }
 159         /* Is this the last Neutron tenant network */
 160         List <NeutronNetwork> networks;
 161         if (neutronNetworkCache != null) {
 162             networks = neutronNetworkCache.getAllNetworks();
 163             if (networks.isEmpty()) {
 164                 logger.trace("neutronNetworkDeleted: last tenant network, delete tunnel ports...");
 165                 List<Node> nodes = connectionService.getNodes();
 166
 167                 for (Node node : nodes) {
 168                     List<String> phyIfName = bridgeConfigurationManager.getAllPhysicalInterfaceNames(node);
 169                     try {
 170                         ConcurrentMap<String, Row> ports =
 171                                 this.ovsdbConfigurationService.getRows(node,
 172                                                                 ovsdbConfigurationService.getTableName(node, Port.class));
 173                         if (ports != null) {
 174                             for (Row portRow : ports.values()) {
 175                                 Port port = ovsdbConfigurationService.getTypedRow(node, Port.class, portRow);
 176                                 for (UUID interfaceUuid : port.getInterfacesColumn().getData()) {
 177                                     Interface interfaceRow = (Interface) ovsdbConfigurationService
 178                                             .getRow(node,
 179                                                     ovsdbConfigurationService.getTableName(node, Interface.class),
 180                                                     interfaceUuid.toString());
 181
 182                                     String interfaceType = interfaceRow.getTypeColumn().getData();
 183                                     if (interfaceType.equalsIgnoreCase(NetworkHandler.NETWORK_TYPE_VXLAN)
 184                                         || interfaceType.equalsIgnoreCase(
 185                                             NetworkHandler.NETWORK_TYPE_GRE)) {
 186                                         /* delete tunnel ports on this node */
 187                                         logger.trace("Delete tunnel interface {}", interfaceRow);
 188                                         ovsdbConfigurationService.deleteRow(node,
 189                                                                      ovsdbConfigurationService.getTableName(node, Port.class),
 190                                                                      port.getUuid().toString());
 191                                         break;
 192                                     } else if (!phyIfName.isEmpty() && phyIfName.contains(interfaceRow.getName())) {
 193                                         logger.trace("Delete physical interface {}", interfaceRow);
 194                                         ovsdbConfigurationService.deleteRow(node,
 195                                                                      ovsdbConfigurationService.getTableName(node, Port.class),
 196                                                                      port.getUuid().toString());
 197                                         break;
 198                                     }
 199                                 }
 200                             }
 201                         }
 202                     } catch (Exception e) {
 203                         logger.error("Exception during handlingNeutron network delete");
 204                     }
 205                 }
 206             }
 207         }
 208         tenantNetworkManager.networkDeleted(network.getID());
 209     }
 210
 211     /**
 212      * Process the event.
 213      *
 214      * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
 215      * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
 216      */
 217     @Override
 218     public void processEvent(AbstractEvent abstractEvent) {
 219         if (!(abstractEvent instanceof NorthboundEvent)) {
 220             logger.error("Unable to process abstract event " + abstractEvent);
 221             return;
 222         }
 223         NorthboundEvent ev = (NorthboundEvent) abstractEvent;
 224         switch (ev.getAction()) {
 225             case ADD:
 226                 doNeutronNetworkCreated(ev.getNeutronNetwork());
 227                 break;
 228             case UPDATE:
 229                 doNeutronNetworkUpdated(ev.getNeutronNetwork());
 230                 break;
 231             case DELETE:
 232                 doNeutronNetworkDeleted(ev.getNeutronNetwork());
 233                 break;
 234             default:
 235                 logger.warn("Unable to process event action " + ev.getAction());
 236                 break;
 237         }
 238     }
 239
 240 }