netconf/netconf-topology-singleton/src/main/java/org/opendaylight/netconf/topology/singleton/impl/RemoteDeviceConnectorImpl.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
   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
   9 package org.opendaylight.netconf.topology.singleton.impl;
  10
  11 import akka.actor.ActorRef;
  12 import akka.util.Timeout;
  13 import com.google.common.annotations.VisibleForTesting;
  14 import com.google.common.base.Preconditions;
  15 import com.google.common.collect.Lists;
  16 import com.google.common.util.concurrent.FutureCallback;
  17 import com.google.common.util.concurrent.Futures;
  18 import com.google.common.util.concurrent.ListenableFuture;
  19 import io.netty.util.concurrent.EventExecutor;
  20 import java.math.BigDecimal;
  21 import java.net.InetSocketAddress;
  22 import java.net.URL;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.Objects;
  27 import java.util.Optional;
  28 import javax.annotation.Nullable;
  29 import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
  30 import org.opendaylight.netconf.api.NetconfMessage;
  31 import org.opendaylight.netconf.client.NetconfClientSessionListener;
  32 import org.opendaylight.netconf.client.conf.NetconfClientConfiguration;
  33 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfiguration;
  34 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfigurationBuilder;
  35 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.AuthenticationHandler;
  36 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.LoginPassword;
  37 import org.opendaylight.netconf.sal.connect.api.RemoteDevice;
  38 import org.opendaylight.netconf.sal.connect.api.RemoteDeviceHandler;
  39 import org.opendaylight.netconf.sal.connect.netconf.LibraryModulesSchemas;
  40 import org.opendaylight.netconf.sal.connect.netconf.NetconfDevice;
  41 import org.opendaylight.netconf.sal.connect.netconf.NetconfDeviceBuilder;
  42 import org.opendaylight.netconf.sal.connect.netconf.SchemalessNetconfDevice;
  43 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCapabilities;
  44 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCommunicator;
  45 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfSessionPreferences;
  46 import org.opendaylight.netconf.sal.connect.netconf.listener.UserPreferences;
  47 import org.opendaylight.netconf.sal.connect.netconf.sal.KeepaliveSalFacade;
  48 import org.opendaylight.netconf.sal.connect.netconf.schema.YangLibrarySchemaYangSourceProvider;
  49 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  50 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
  51 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfConnectorDTO;
  52 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  53 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  54 import org.opendaylight.protocol.framework.ReconnectStrategy;
  55 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  56 import org.opendaylight.protocol.framework.TimedReconnectStrategy;
  57 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Host;
  58 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability.CapabilityOrigin;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
  62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  63 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  64 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  65 import org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource;
  66 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceRegistration;
  67 import org.slf4j.Logger;
  68 import org.slf4j.LoggerFactory;
  69
  70 public class RemoteDeviceConnectorImpl implements RemoteDeviceConnector {
  71
  72     private static final Logger LOG = LoggerFactory.getLogger(RemoteDeviceConnectorImpl.class);
  73
  74     // Initializes default constant instances for the case when the default schema repository
  75     // directory cache/schema is used.
  76
  77     private final NetconfTopologySetup netconfTopologyDeviceSetup;
  78     private final RemoteDeviceId remoteDeviceId;
  79     private final DOMMountPointService mountService;
  80     private final Timeout actorResponseWaitTime;
  81
  82     private NetconfConnectorDTO deviceCommunicatorDTO;
  83
  84     public RemoteDeviceConnectorImpl(final NetconfTopologySetup netconfTopologyDeviceSetup,
  85                                      final RemoteDeviceId remoteDeviceId, final Timeout actorResponseWaitTime,
  86                                      final DOMMountPointService mountService) {
  87
  88         this.netconfTopologyDeviceSetup = Preconditions.checkNotNull(netconfTopologyDeviceSetup);
  89         this.remoteDeviceId = remoteDeviceId;
  90         this.actorResponseWaitTime = actorResponseWaitTime;
  91         this.mountService = mountService;
  92     }
  93
  94     @Override
  95     public void startRemoteDeviceConnection(final ActorRef deviceContextActorRef) {
  96
  97         final NetconfNode netconfNode = netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class);
  98         final NodeId nodeId = netconfTopologyDeviceSetup.getNode().getNodeId();
  99         Preconditions.checkNotNull(netconfNode.getHost());
 100         Preconditions.checkNotNull(netconfNode.getPort());
 101         Preconditions.checkNotNull(netconfNode.isTcpOnly());
 102
 103         this.deviceCommunicatorDTO = createDeviceCommunicator(nodeId, netconfNode, deviceContextActorRef);
 104         final NetconfDeviceCommunicator deviceCommunicator = deviceCommunicatorDTO.getCommunicator();
 105         final NetconfClientSessionListener netconfClientSessionListener = deviceCommunicatorDTO.getSessionListener();
 106         final NetconfReconnectingClientConfiguration clientConfig =
 107                 getClientConfig(netconfClientSessionListener, netconfNode);
 108         final ListenableFuture<NetconfDeviceCapabilities> future = deviceCommunicator
 109                 .initializeRemoteConnection(netconfTopologyDeviceSetup.getNetconfClientDispatcher(), clientConfig);
 110
 111         Futures.addCallback(future, new FutureCallback<NetconfDeviceCapabilities>() {
 112             @Override
 113             public void onSuccess(final NetconfDeviceCapabilities result) {
 114                 LOG.debug("{}: Connector started successfully", remoteDeviceId);
 115             }
 116
 117             @Override
 118             public void onFailure(@Nullable final Throwable throwable) {
 119                 LOG.error("{}: Connector failed, {}", remoteDeviceId, throwable);
 120             }
 121         });
 122     }
 123
 124     @Override
 125     public void stopRemoteDeviceConnection() {
 126         Preconditions.checkNotNull(deviceCommunicatorDTO, remoteDeviceId + ": Device communicator was not created.");
 127         try {
 128             deviceCommunicatorDTO.close();
 129         } catch (final Exception e) {
 130             LOG.error("{}: Error at closing device communicator.", remoteDeviceId, e);
 131         }
 132     }
 133
 134     @VisibleForTesting
 135     NetconfConnectorDTO createDeviceCommunicator(final NodeId nodeId, final NetconfNode node,
 136                                                  final ActorRef deviceContextActorRef) {
 137         //setup default values since default value is not supported in mdsal
 138         final Long defaultRequestTimeoutMillis = node.getDefaultRequestTimeoutMillis() == null
 139                 ? NetconfTopologyUtils.DEFAULT_REQUEST_TIMEOUT_MILLIS : node.getDefaultRequestTimeoutMillis();
 140         final Long keepaliveDelay = node.getKeepaliveDelay() == null
 141                 ? NetconfTopologyUtils.DEFAULT_KEEPALIVE_DELAY : node.getKeepaliveDelay();
 142         final Boolean reconnectOnChangedSchema = node.isReconnectOnChangedSchema() == null
 143                 ? NetconfTopologyUtils.DEFAULT_RECONNECT_ON_CHANGED_SCHEMA : node.isReconnectOnChangedSchema();
 144
 145         RemoteDeviceHandler<NetconfSessionPreferences> salFacade = new MasterSalFacade(remoteDeviceId,
 146                 netconfTopologyDeviceSetup.getActorSystem(), deviceContextActorRef, actorResponseWaitTime,
 147                 mountService, netconfTopologyDeviceSetup.getDataBroker());
 148         if (keepaliveDelay > 0) {
 149             LOG.info("{}: Adding keepalive facade.", remoteDeviceId);
 150             salFacade = new KeepaliveSalFacade(remoteDeviceId, salFacade,
 151                     netconfTopologyDeviceSetup.getKeepaliveExecutor().getExecutor(), keepaliveDelay,
 152                     defaultRequestTimeoutMillis);
 153         }
 154
 155         final NetconfDevice.SchemaResourcesDTO schemaResourcesDTO = netconfTopologyDeviceSetup.getSchemaResourcesDTO();
 156
 157
 158         // pre register yang library sources as fallback schemas to schema registry
 159         final List<SchemaSourceRegistration<YangTextSchemaSource>> registeredYangLibSources = Lists.newArrayList();
 160         if (node.getYangLibrary() != null) {
 161             final String yangLibURL = node.getYangLibrary().getYangLibraryUrl().getValue();
 162             final String yangLibUsername = node.getYangLibrary().getUsername();
 163             final String yangLigPassword = node.getYangLibrary().getPassword();
 164
 165             final LibraryModulesSchemas libraryModulesSchemas;
 166             if (yangLibURL != null) {
 167                 if (yangLibUsername != null && yangLigPassword != null) {
 168                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL, yangLibUsername, yangLigPassword);
 169                 } else {
 170                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL);
 171                 }
 172
 173                 for (final Map.Entry<SourceIdentifier, URL> sourceIdentifierURLEntry :
 174                         libraryModulesSchemas.getAvailableModels().entrySet()) {
 175                     registeredYangLibSources
 176                             .add(schemaResourcesDTO.getSchemaRegistry().registerSchemaSource(
 177                                     new YangLibrarySchemaYangSourceProvider(remoteDeviceId,
 178                                             libraryModulesSchemas.getAvailableModels()),
 179                                     PotentialSchemaSource
 180                                             .create(sourceIdentifierURLEntry.getKey(), YangTextSchemaSource.class,
 181                                                     PotentialSchemaSource.Costs.REMOTE_IO.getValue())));
 182                 }
 183             }
 184         }
 185
 186         final RemoteDevice<NetconfSessionPreferences, NetconfMessage, NetconfDeviceCommunicator> device;
 187         if (node.isSchemaless()) {
 188             device = new SchemalessNetconfDevice(remoteDeviceId, salFacade);
 189         } else {
 190             device = new NetconfDeviceBuilder()
 191                     .setReconnectOnSchemasChange(reconnectOnChangedSchema)
 192                     .setSchemaResourcesDTO(schemaResourcesDTO)
 193                     .setGlobalProcessingExecutor(netconfTopologyDeviceSetup.getProcessingExecutor().getExecutor())
 194                     .setId(remoteDeviceId)
 195                     .setSalFacade(salFacade)
 196                     .build();
 197         }
 198
 199         final Optional<NetconfSessionPreferences> userCapabilities = getUserCapabilities(node);
 200         final int rpcMessageLimit =
 201                 node.getConcurrentRpcLimit() == null
 202                         ? NetconfTopologyUtils.DEFAULT_CONCURRENT_RPC_LIMIT : node.getConcurrentRpcLimit();
 203
 204         if (rpcMessageLimit < 1) {
 205             LOG.info("{}: Concurrent rpc limit is smaller than 1, no limit will be enforced.", remoteDeviceId);
 206         }
 207
 208         return new NetconfConnectorDTO(
 209                 userCapabilities.isPresent() ? new NetconfDeviceCommunicator(remoteDeviceId, device,
 210                         new UserPreferences(userCapabilities.get(),
 211                                 Objects.isNull(node.getYangModuleCapabilities())
 212                                         ? false : node.getYangModuleCapabilities().isOverride(),
 213                                 Objects.isNull(node.getNonModuleCapabilities())
 214                                         ? false : node.getNonModuleCapabilities().isOverride()), rpcMessageLimit)
 215                         : new NetconfDeviceCommunicator(remoteDeviceId, device, rpcMessageLimit), salFacade);
 216     }
 217
 218     private Optional<NetconfSessionPreferences> getUserCapabilities(final NetconfNode node) {
 219         if (node.getYangModuleCapabilities() == null && node.getNonModuleCapabilities() == null) {
 220             return Optional.empty();
 221         }
 222         final List<String> capabilities = new ArrayList<>();
 223
 224         if (node.getYangModuleCapabilities() != null) {
 225             capabilities.addAll(node.getYangModuleCapabilities().getCapability());
 226         }
 227
 228         //non-module capabilities should not exist in yang module capabilities
 229         final NetconfSessionPreferences netconfSessionPreferences = NetconfSessionPreferences.fromStrings(capabilities);
 230         Preconditions.checkState(netconfSessionPreferences.getNonModuleCaps().isEmpty(), "List yang-module-capabilities/capability " +
 231                 "should contain only module based capabilities. Non-module capabilities used: " +
 232                 netconfSessionPreferences.getNonModuleCaps());
 233
 234         if (node.getNonModuleCapabilities() != null) {
 235             capabilities.addAll(node.getNonModuleCapabilities().getCapability());
 236         }
 237
 238         return Optional.of(NetconfSessionPreferences.fromStrings(capabilities, CapabilityOrigin.UserDefined));
 239     }
 240
 241     //TODO: duplicate code
 242     private InetSocketAddress getSocketAddress(final Host host, final int port) {
 243         if (host.getDomainName() != null) {
 244             return new InetSocketAddress(host.getDomainName().getValue(), port);
 245         } else {
 246             final IpAddress ipAddress = host.getIpAddress();
 247             final String ip = ipAddress.getIpv4Address() != null ? ipAddress.getIpv4Address().getValue() :
 248                     ipAddress.getIpv6Address().getValue();
 249             return new InetSocketAddress(ip, port);
 250         }
 251     }
 252
 253     @VisibleForTesting
 254     NetconfReconnectingClientConfiguration getClientConfig(final NetconfClientSessionListener listener,
 255                                                            final NetconfNode node) {
 256
 257         //setup default values since default value is not supported in mdsal
 258         final long clientConnectionTimeoutMillis = node.getConnectionTimeoutMillis() == null
 259                 ? NetconfTopologyUtils.DEFAULT_CONNECTION_TIMEOUT_MILLIS : node.getConnectionTimeoutMillis();
 260         final long maxConnectionAttempts = node.getMaxConnectionAttempts() == null
 261                 ? NetconfTopologyUtils.DEFAULT_MAX_CONNECTION_ATTEMPTS : node.getMaxConnectionAttempts();
 262         final int betweenAttemptsTimeoutMillis = node.getBetweenAttemptsTimeoutMillis() == null
 263                 ? NetconfTopologyUtils.DEFAULT_BETWEEN_ATTEMPTS_TIMEOUT_MILLIS : node.getBetweenAttemptsTimeoutMillis();
 264         final BigDecimal sleepFactor = node.getSleepFactor() == null
 265                 ? NetconfTopologyUtils.DEFAULT_SLEEP_FACTOR : node.getSleepFactor();
 266
 267         final InetSocketAddress socketAddress = getSocketAddress(node.getHost(), node.getPort().getValue());
 268
 269         final ReconnectStrategyFactory sf =
 270                 new TimedReconnectStrategyFactory(netconfTopologyDeviceSetup.getEventExecutor(), maxConnectionAttempts,
 271                         betweenAttemptsTimeoutMillis, sleepFactor);
 272         final ReconnectStrategy strategy = sf.createReconnectStrategy();
 273
 274         final AuthenticationHandler authHandler;
 275         final Credentials credentials = node.getCredentials();
 276         if (credentials instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) {
 277             authHandler = new LoginPassword(
 278                     ((org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) credentials).getUsername(),
 279                     ((org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) credentials).getPassword());
 280         } else {
 281             throw new IllegalStateException(remoteDeviceId + ": Only login/password authentication is supported");
 282         }
 283
 284         return NetconfReconnectingClientConfigurationBuilder.create()
 285                 .withAddress(socketAddress)
 286                 .withConnectionTimeoutMillis(clientConnectionTimeoutMillis)
 287                 .withReconnectStrategy(strategy)
 288                 .withAuthHandler(authHandler)
 289                 .withProtocol(node.isTcpOnly()
 290                         ? NetconfClientConfiguration.NetconfClientProtocol.TCP
 291                         : NetconfClientConfiguration.NetconfClientProtocol.SSH)
 292                 .withConnectStrategyFactory(sf)
 293                 .withSessionListener(listener)
 294                 .build();
 295     }
 296
 297     private static final class TimedReconnectStrategyFactory implements ReconnectStrategyFactory {
 298         private final Long connectionAttempts;
 299         private final EventExecutor executor;
 300         private final double sleepFactor;
 301         private final int minSleep;
 302
 303         TimedReconnectStrategyFactory(final EventExecutor executor, final Long maxConnectionAttempts,
 304                                       final int minSleep, final BigDecimal sleepFactor) {
 305             if (maxConnectionAttempts != null && maxConnectionAttempts > 0) {
 306                 connectionAttempts = maxConnectionAttempts;
 307             } else {
 308                 connectionAttempts = null;
 309             }
 310
 311             this.sleepFactor = sleepFactor.doubleValue();
 312             this.executor = executor;
 313             this.minSleep = minSleep;
 314         }
 315
 316         @Override
 317         public ReconnectStrategy createReconnectStrategy() {
 318             final Long maxSleep = null;
 319             final Long deadline = null;
 320
 321             return new TimedReconnectStrategy(executor, minSleep,
 322                     minSleep, sleepFactor, maxSleep, connectionAttempts, deadline);
 323         }
 324     }
 325 }