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.base.Strings;
  16 import com.google.common.collect.Lists;
  17 import com.google.common.util.concurrent.FutureCallback;
  18 import com.google.common.util.concurrent.Futures;
  19 import com.google.common.util.concurrent.ListenableFuture;
  20 import io.netty.util.concurrent.EventExecutor;
  21 import java.io.File;
  22 import java.math.BigDecimal;
  23 import java.net.InetSocketAddress;
  24 import java.net.URL;
  25 import java.util.ArrayList;
  26 import java.util.HashMap;
  27 import java.util.List;
  28 import java.util.Map;
  29 import java.util.Optional;
  30 import javax.annotation.Nullable;
  31 import org.opendaylight.netconf.api.NetconfMessage;
  32 import org.opendaylight.netconf.client.NetconfClientSessionListener;
  33 import org.opendaylight.netconf.client.conf.NetconfClientConfiguration;
  34 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfiguration;
  35 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfigurationBuilder;
  36 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.AuthenticationHandler;
  37 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.LoginPassword;
  38 import org.opendaylight.netconf.sal.connect.api.RemoteDevice;
  39 import org.opendaylight.netconf.sal.connect.api.RemoteDeviceHandler;
  40 import org.opendaylight.netconf.sal.connect.netconf.LibraryModulesSchemas;
  41 import org.opendaylight.netconf.sal.connect.netconf.NetconfDevice;
  42 import org.opendaylight.netconf.sal.connect.netconf.NetconfDeviceBuilder;
  43 import org.opendaylight.netconf.sal.connect.netconf.NetconfStateSchemasResolverImpl;
  44 import org.opendaylight.netconf.sal.connect.netconf.SchemalessNetconfDevice;
  45 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCapabilities;
  46 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCommunicator;
  47 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfSessionPreferences;
  48 import org.opendaylight.netconf.sal.connect.netconf.listener.UserPreferences;
  49 import org.opendaylight.netconf.sal.connect.netconf.sal.KeepaliveSalFacade;
  50 import org.opendaylight.netconf.sal.connect.netconf.schema.YangLibrarySchemaYangSourceProvider;
  51 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  52 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
  53 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfConnectorDTO;
  54 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  55 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  56 import org.opendaylight.protocol.framework.ReconnectStrategy;
  57 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  58 import org.opendaylight.protocol.framework.TimedReconnectStrategy;
  59 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Host;
  60 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability.CapabilityOrigin;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
  64 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  65 import org.opendaylight.yangtools.yang.model.repo.api.SchemaContextFactory;
  66 import org.opendaylight.yangtools.yang.model.repo.api.SchemaRepository;
  67 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceFilter;
  68 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  69 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  70 import org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource;
  71 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceRegistration;
  72 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceRegistry;
  73 import org.opendaylight.yangtools.yang.model.repo.util.FilesystemSchemaSourceCache;
  74 import org.opendaylight.yangtools.yang.parser.repo.SharedSchemaRepository;
  75 import org.opendaylight.yangtools.yang.parser.util.TextToASTTransformer;
  76 import org.slf4j.Logger;
  77 import org.slf4j.LoggerFactory;
  78
  79 public class RemoteDeviceConnectorImpl implements RemoteDeviceConnector {
  80
  81     private static final Logger LOG = LoggerFactory.getLogger(RemoteDeviceConnectorImpl.class);
  82
  83     /**
  84      * Keeps track of initialized Schema resources.  A Map is maintained in which the key represents the name
  85      * of the schema cache directory, and the value is a corresponding <code>SchemaResourcesDTO</code>.  The
  86      * <code>SchemaResourcesDTO</code> is essentially a container that allows for the extraction of the
  87      * <code>SchemaRegistry</code> and <code>SchemaContextFactory</code> which should be used for a particular
  88      * Netconf mount.  Access to <code>schemaResourcesDTOs</code> should be surrounded by appropriate
  89      * synchronization locks.
  90      */
  91     private static final Map<String, NetconfDevice.SchemaResourcesDTO> schemaResourcesDTOs = new HashMap<>();
  92     private final Timeout actorResponseWaitTime;
  93
  94     // Initializes default constant instances for the case when the default schema repository
  95     // directory cache/schema is used.
  96     static {
  97         schemaResourcesDTOs.put(NetconfTopologyUtils.DEFAULT_CACHE_DIRECTORY,
  98                 new NetconfDevice.SchemaResourcesDTO(NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY,
  99                         NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY,
 100                         NetconfTopologyUtils.DEFAULT_SCHEMA_CONTEXT_FACTORY,
 101                         new NetconfStateSchemasResolverImpl()));
 102         NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY.registerSchemaSourceListener(NetconfTopologyUtils.DEFAULT_CACHE);
 103         NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY.registerSchemaSourceListener(
 104                 TextToASTTransformer.create(NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY,
 105                         NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY));
 106     }
 107
 108     private final NetconfTopologySetup netconfTopologyDeviceSetup;
 109     private final RemoteDeviceId remoteDeviceId;
 110     private SchemaSourceRegistry schemaRegistry = NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY;
 111     private final SchemaRepository schemaRepository = NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY;
 112     private SchemaContextFactory schemaContextFactory = NetconfTopologyUtils.DEFAULT_SCHEMA_CONTEXT_FACTORY;
 113     private NetconfConnectorDTO deviceCommunicatorDTO;
 114
 115     public RemoteDeviceConnectorImpl(final NetconfTopologySetup netconfTopologyDeviceSetup,
 116                                      final RemoteDeviceId remoteDeviceId, final Timeout actorResponseWaitTime) {
 117
 118         this.netconfTopologyDeviceSetup = Preconditions.checkNotNull(netconfTopologyDeviceSetup);
 119         this.remoteDeviceId = remoteDeviceId;
 120         this.actorResponseWaitTime = actorResponseWaitTime;
 121     }
 122
 123     @Override
 124     public void startRemoteDeviceConnection(final ActorRef deviceContextActorRef) {
 125
 126         final NetconfNode netconfNode = netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class);
 127         final NodeId nodeId = netconfTopologyDeviceSetup.getNode().getNodeId();
 128         Preconditions.checkNotNull(netconfNode.getHost());
 129         Preconditions.checkNotNull(netconfNode.getPort());
 130         Preconditions.checkNotNull(netconfNode.isTcpOnly());
 131
 132         this.deviceCommunicatorDTO = createDeviceCommunicator(nodeId, netconfNode, deviceContextActorRef);
 133         final NetconfDeviceCommunicator deviceCommunicator = deviceCommunicatorDTO.getCommunicator();
 134         final NetconfClientSessionListener netconfClientSessionListener = deviceCommunicatorDTO.getSessionListener();
 135         final NetconfReconnectingClientConfiguration clientConfig =
 136                 getClientConfig(netconfClientSessionListener, netconfNode);
 137         final ListenableFuture<NetconfDeviceCapabilities> future = deviceCommunicator
 138                 .initializeRemoteConnection(netconfTopologyDeviceSetup.getNetconfClientDispatcher(), clientConfig);
 139
 140         Futures.addCallback(future, new FutureCallback<NetconfDeviceCapabilities>() {
 141             @Override
 142             public void onSuccess(final NetconfDeviceCapabilities result) {
 143                 LOG.debug("{}: Connector started successfully", remoteDeviceId);
 144             }
 145
 146             @Override
 147             public void onFailure(@Nullable final Throwable throwable) {
 148                 LOG.error("{}: Connector failed, {}", remoteDeviceId, throwable);
 149             }
 150         });
 151     }
 152
 153     @Override
 154     public void stopRemoteDeviceConnection() {
 155         Preconditions.checkNotNull(deviceCommunicatorDTO, remoteDeviceId + ": Device communicator was not created.");
 156         try {
 157             deviceCommunicatorDTO.close();
 158         } catch (final Exception e) {
 159             LOG.error("{}: Error at closing device communicator.", remoteDeviceId, e);
 160         }
 161     }
 162
 163     @VisibleForTesting
 164     NetconfConnectorDTO createDeviceCommunicator(final NodeId nodeId, final NetconfNode node,
 165                                                  final ActorRef deviceContextActorRef) {
 166         //setup default values since default value is not supported in mdsal
 167         final Long defaultRequestTimeoutMillis = node.getDefaultRequestTimeoutMillis() == null
 168                 ? NetconfTopologyUtils.DEFAULT_REQUEST_TIMEOUT_MILLIS : node.getDefaultRequestTimeoutMillis();
 169         final Long keepaliveDelay = node.getKeepaliveDelay() == null
 170                 ? NetconfTopologyUtils.DEFAULT_KEEPALIVE_DELAY : node.getKeepaliveDelay();
 171         final Boolean reconnectOnChangedSchema = node.isReconnectOnChangedSchema() == null
 172                 ? NetconfTopologyUtils.DEFAULT_RECONNECT_ON_CHANGED_SCHEMA : node.isReconnectOnChangedSchema();
 173
 174         RemoteDeviceHandler<NetconfSessionPreferences> salFacade = new MasterSalFacade(remoteDeviceId,
 175                 netconfTopologyDeviceSetup.getDomBroker(), netconfTopologyDeviceSetup.getBindingAwareBroker(),
 176                 netconfTopologyDeviceSetup.getActorSystem(), deviceContextActorRef, actorResponseWaitTime);
 177         if (keepaliveDelay > 0) {
 178             LOG.info("{}: Adding keepalive facade.", remoteDeviceId);
 179             salFacade = new KeepaliveSalFacade(remoteDeviceId, salFacade,
 180                     netconfTopologyDeviceSetup.getKeepaliveExecutor().getExecutor(), keepaliveDelay,
 181                     defaultRequestTimeoutMillis);
 182         }
 183
 184         // pre register yang library sources as fallback schemas to schema registry
 185         final List<SchemaSourceRegistration<YangTextSchemaSource>> registeredYangLibSources = Lists.newArrayList();
 186         if (node.getYangLibrary() != null) {
 187             final String yangLibURL = node.getYangLibrary().getYangLibraryUrl().getValue();
 188             final String yangLibUsername = node.getYangLibrary().getUsername();
 189             final String yangLigPassword = node.getYangLibrary().getPassword();
 190
 191             final LibraryModulesSchemas libraryModulesSchemas;
 192             if (yangLibURL != null) {
 193                 if (yangLibUsername != null && yangLigPassword != null) {
 194                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL, yangLibUsername, yangLigPassword);
 195                 } else {
 196                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL);
 197                 }
 198
 199                 for (final Map.Entry<SourceIdentifier, URL> sourceIdentifierURLEntry :
 200                         libraryModulesSchemas.getAvailableModels().entrySet()) {
 201                     registeredYangLibSources
 202                             .add(schemaRegistry.registerSchemaSource(
 203                                     new YangLibrarySchemaYangSourceProvider(remoteDeviceId,
 204                                             libraryModulesSchemas.getAvailableModels()),
 205                                     PotentialSchemaSource
 206                                             .create(sourceIdentifierURLEntry.getKey(), YangTextSchemaSource.class,
 207                                                     PotentialSchemaSource.Costs.REMOTE_IO.getValue())));
 208                 }
 209             }
 210         }
 211
 212         final NetconfDevice.SchemaResourcesDTO schemaResourcesDTO = setupSchemaCacheDTO(nodeId, node);
 213         final RemoteDevice<NetconfSessionPreferences, NetconfMessage, NetconfDeviceCommunicator> device;
 214         if (node.isSchemaless()) {
 215             device = new SchemalessNetconfDevice(remoteDeviceId, salFacade);
 216         } else {
 217             device = new NetconfDeviceBuilder()
 218                     .setReconnectOnSchemasChange(reconnectOnChangedSchema)
 219                     .setSchemaResourcesDTO(schemaResourcesDTO)
 220                     .setGlobalProcessingExecutor(netconfTopologyDeviceSetup.getProcessingExecutor().getExecutor())
 221                     .setId(remoteDeviceId)
 222                     .setSalFacade(salFacade)
 223                     .build();
 224         }
 225
 226         final Optional<NetconfSessionPreferences> userCapabilities = getUserCapabilities(node);
 227         final int rpcMessageLimit =
 228                 node.getConcurrentRpcLimit() == null
 229                         ? NetconfTopologyUtils.DEFAULT_CONCURRENT_RPC_LIMIT : node.getConcurrentRpcLimit();
 230
 231         if (rpcMessageLimit < 1) {
 232             LOG.info("{}: Concurrent rpc limit is smaller than 1, no limit will be enforced.", remoteDeviceId);
 233         }
 234
 235         return new NetconfConnectorDTO(
 236                 userCapabilities.isPresent()
 237                         ? new NetconfDeviceCommunicator(
 238                         remoteDeviceId, device, new UserPreferences(userCapabilities.get(),
 239                         node.getYangModuleCapabilities().isOverride(), node.getNonModuleCapabilities().isOverride()),
 240                         rpcMessageLimit)
 241                         : new NetconfDeviceCommunicator(remoteDeviceId, device, rpcMessageLimit), salFacade);
 242     }
 243
 244     private Optional<NetconfSessionPreferences> getUserCapabilities(final NetconfNode node) {
 245         if (node.getYangModuleCapabilities() == null && node.getNonModuleCapabilities() == null) {
 246             return Optional.empty();
 247         }
 248         final List<String> capabilities = new ArrayList<>();
 249
 250         if (node.getYangModuleCapabilities() != null) {
 251             capabilities.addAll(node.getYangModuleCapabilities().getCapability());
 252         }
 253
 254         //non-module capabilities should not exist in yang module capabilities
 255         final NetconfSessionPreferences netconfSessionPreferences = NetconfSessionPreferences.fromStrings(capabilities);
 256         Preconditions.checkState(netconfSessionPreferences.getNonModuleCaps().isEmpty(), "List yang-module-capabilities/capability " +
 257                 "should contain only module based capabilities. Non-module capabilities used: " +
 258                 netconfSessionPreferences.getNonModuleCaps());
 259
 260         if (node.getNonModuleCapabilities() != null) {
 261             capabilities.addAll(node.getNonModuleCapabilities().getCapability());
 262         }
 263
 264         return Optional.of(NetconfSessionPreferences.fromStrings(capabilities, CapabilityOrigin.UserDefined));
 265     }
 266
 267     private NetconfDevice.SchemaResourcesDTO setupSchemaCacheDTO(final NodeId nodeId, final NetconfNode node) {
 268         // Setup information related to the SchemaRegistry, SchemaResourceFactory, etc.
 269         NetconfDevice.SchemaResourcesDTO schemaResourcesDTO = null;
 270         final String moduleSchemaCacheDirectory = node.getSchemaCacheDirectory();
 271         // Only checks to ensure the String is not empty or null;  further checks related to directory accessibility
 272         // and file permissions are handled during the FilesystemSchemaSourceCache initialization.
 273         if (!Strings.isNullOrEmpty(moduleSchemaCacheDirectory)) {
 274             // If a custom schema cache directory is specified, create the backing DTO; otherwise, the SchemaRegistry
 275             // and SchemaContextFactory remain the default values.
 276             if (!moduleSchemaCacheDirectory.equals(NetconfTopologyUtils.DEFAULT_CACHE_DIRECTORY)) {
 277                 // Multiple modules may be created at once;  synchronize to avoid issues with data consistency among
 278                 // threads.
 279                 synchronized (schemaResourcesDTOs) {
 280                     // Look for the cached DTO to reuse SchemaRegistry and SchemaContextFactory variables if
 281                     // they already exist
 282                     schemaResourcesDTO = schemaResourcesDTOs.get(moduleSchemaCacheDirectory);
 283                     if (schemaResourcesDTO == null) {
 284                         schemaResourcesDTO = createSchemaResourcesDTO(moduleSchemaCacheDirectory);
 285                         schemaResourcesDTO.getSchemaRegistry().registerSchemaSourceListener(
 286                                 TextToASTTransformer.create((SchemaRepository) schemaResourcesDTO.getSchemaRegistry(),
 287                                         schemaResourcesDTO.getSchemaRegistry())
 288                         );
 289                         schemaResourcesDTOs.put(moduleSchemaCacheDirectory, schemaResourcesDTO);
 290                     }
 291                 }
 292                 LOG.info("{} : netconf connector will use schema cache directory {} instead of {}",
 293                         remoteDeviceId, moduleSchemaCacheDirectory, NetconfTopologyUtils.DEFAULT_CACHE_DIRECTORY);
 294             }
 295         } else {
 296             LOG.info("{} : using the default directory {}",
 297                     remoteDeviceId, NetconfTopologyUtils.QUALIFIED_DEFAULT_CACHE_DIRECTORY);
 298         }
 299
 300         if (schemaResourcesDTO == null) {
 301             schemaResourcesDTO =
 302                     new NetconfDevice.SchemaResourcesDTO(schemaRegistry, schemaRepository, schemaContextFactory,
 303                             new NetconfStateSchemasResolverImpl());
 304         }
 305
 306         return schemaResourcesDTO;
 307     }
 308
 309     /**
 310      * Creates the backing Schema classes for a particular directory.
 311      *
 312      * @param moduleSchemaCacheDirectory The string directory relative to "cache"
 313      * @return A DTO containing the Schema classes for the Netconf mount.
 314      */
 315     private NetconfDevice.SchemaResourcesDTO createSchemaResourcesDTO(final String moduleSchemaCacheDirectory) {
 316         final SharedSchemaRepository repository = new SharedSchemaRepository(moduleSchemaCacheDirectory);
 317         final SchemaContextFactory schemaContextFactory
 318                 = repository.createSchemaContextFactory(SchemaSourceFilter.ALWAYS_ACCEPT);
 319         this.schemaRegistry = repository;
 320         this.schemaContextFactory = schemaContextFactory;
 321
 322         final FilesystemSchemaSourceCache<YangTextSchemaSource> deviceCache =
 323                 createDeviceFilesystemCache(moduleSchemaCacheDirectory);
 324         repository.registerSchemaSourceListener(deviceCache);
 325         return new NetconfDevice.SchemaResourcesDTO(repository, repository, schemaContextFactory,
 326                 new NetconfStateSchemasResolverImpl());
 327     }
 328
 329     /**
 330      * Creates a <code>FilesystemSchemaSourceCache</code> for the custom schema cache directory.
 331      *
 332      * @param schemaCacheDirectory The custom cache directory relative to "cache"
 333      * @return A <code>FilesystemSchemaSourceCache</code> for the custom schema cache directory
 334      */
 335     private FilesystemSchemaSourceCache<YangTextSchemaSource> createDeviceFilesystemCache(
 336             final String schemaCacheDirectory) {
 337         final String relativeSchemaCacheDirectory =
 338                 NetconfTopologyUtils.CACHE_DIRECTORY + File.separator + schemaCacheDirectory;
 339         return new FilesystemSchemaSourceCache<>(schemaRegistry, YangTextSchemaSource.class,
 340                 new File(relativeSchemaCacheDirectory));
 341     }
 342
 343     //TODO: duplicate code
 344     private InetSocketAddress getSocketAddress(final Host host, final int port) {
 345         if (host.getDomainName() != null) {
 346             return new InetSocketAddress(host.getDomainName().getValue(), port);
 347         } else {
 348             final IpAddress ipAddress = host.getIpAddress();
 349             final String ip = ipAddress.getIpv4Address() != null ? ipAddress.getIpv4Address().getValue() :
 350                     ipAddress.getIpv6Address().getValue();
 351             return new InetSocketAddress(ip, port);
 352         }
 353     }
 354
 355     @VisibleForTesting
 356     NetconfReconnectingClientConfiguration getClientConfig(final NetconfClientSessionListener listener,
 357                                                            final NetconfNode node) {
 358
 359         //setup default values since default value is not supported in mdsal
 360         final long clientConnectionTimeoutMillis = node.getConnectionTimeoutMillis() == null
 361                 ? NetconfTopologyUtils.DEFAULT_CONNECTION_TIMEOUT_MILLIS : node.getConnectionTimeoutMillis();
 362         final long maxConnectionAttempts = node.getMaxConnectionAttempts() == null
 363                 ? NetconfTopologyUtils.DEFAULT_MAX_CONNECTION_ATTEMPTS : node.getMaxConnectionAttempts();
 364         final int betweenAttemptsTimeoutMillis = node.getBetweenAttemptsTimeoutMillis() == null
 365                 ? NetconfTopologyUtils.DEFAULT_BETWEEN_ATTEMPTS_TIMEOUT_MILLIS : node.getBetweenAttemptsTimeoutMillis();
 366         final BigDecimal sleepFactor = node.getSleepFactor() == null
 367                 ? NetconfTopologyUtils.DEFAULT_SLEEP_FACTOR : node.getSleepFactor();
 368
 369         final InetSocketAddress socketAddress = getSocketAddress(node.getHost(), node.getPort().getValue());
 370
 371         final ReconnectStrategyFactory sf =
 372                 new TimedReconnectStrategyFactory(netconfTopologyDeviceSetup.getEventExecutor(), maxConnectionAttempts,
 373                         betweenAttemptsTimeoutMillis, sleepFactor);
 374         final ReconnectStrategy strategy = sf.createReconnectStrategy();
 375
 376         final AuthenticationHandler authHandler;
 377         final Credentials credentials = node.getCredentials();
 378         if (credentials instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) {
 379             authHandler = new LoginPassword(
 380                     ((org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) credentials).getUsername(),
 381                     ((org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPassword) credentials).getPassword());
 382         } else {
 383             throw new IllegalStateException(remoteDeviceId + ": Only login/password authentication is supported");
 384         }
 385
 386         return NetconfReconnectingClientConfigurationBuilder.create()
 387                 .withAddress(socketAddress)
 388                 .withConnectionTimeoutMillis(clientConnectionTimeoutMillis)
 389                 .withReconnectStrategy(strategy)
 390                 .withAuthHandler(authHandler)
 391                 .withProtocol(node.isTcpOnly()
 392                         ? NetconfClientConfiguration.NetconfClientProtocol.TCP
 393                         : NetconfClientConfiguration.NetconfClientProtocol.SSH)
 394                 .withConnectStrategyFactory(sf)
 395                 .withSessionListener(listener)
 396                 .build();
 397     }
 398
 399     @VisibleForTesting
 400     Map<String, NetconfDevice.SchemaResourcesDTO> getSchemaResourcesDTOs() {
 401         return schemaResourcesDTOs;
 402     }
 403
 404     private static final class TimedReconnectStrategyFactory implements ReconnectStrategyFactory {
 405         private final Long connectionAttempts;
 406         private final EventExecutor executor;
 407         private final double sleepFactor;
 408         private final int minSleep;
 409
 410         TimedReconnectStrategyFactory(final EventExecutor executor, final Long maxConnectionAttempts,
 411                                       final int minSleep, final BigDecimal sleepFactor) {
 412             if (maxConnectionAttempts != null && maxConnectionAttempts > 0) {
 413                 connectionAttempts = maxConnectionAttempts;
 414             } else {
 415                 connectionAttempts = null;
 416             }
 417
 418             this.sleepFactor = sleepFactor.doubleValue();
 419             this.executor = executor;
 420             this.minSleep = minSleep;
 421         }
 422
 423         @Override
 424         public ReconnectStrategy createReconnectStrategy() {
 425             final Long maxSleep = null;
 426             final Long deadline = null;
 427
 428             return new TimedReconnectStrategy(executor, minSleep,
 429                     minSleep, sleepFactor, maxSleep, connectionAttempts, deadline);
 430         }
 431     }
 432 }