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 package org.opendaylight.netconf.topology.singleton.impl;
   9
  10 import static com.google.common.base.Preconditions.checkState;
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.annotations.VisibleForTesting;
  14 import com.google.common.collect.Lists;
  15 import com.google.common.util.concurrent.FutureCallback;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import com.google.common.util.concurrent.MoreExecutors;
  19 import java.math.BigDecimal;
  20 import java.net.InetSocketAddress;
  21 import java.net.URL;
  22 import java.util.ArrayList;
  23 import java.util.List;
  24 import java.util.Map;
  25 import java.util.Optional;
  26 import org.opendaylight.aaa.encrypt.AAAEncryptionService;
  27 import org.opendaylight.netconf.api.NetconfMessage;
  28 import org.opendaylight.netconf.client.NetconfClientSessionListener;
  29 import org.opendaylight.netconf.client.conf.NetconfClientConfiguration;
  30 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfiguration;
  31 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfigurationBuilder;
  32 import org.opendaylight.netconf.nettyutil.ReconnectStrategyFactory;
  33 import org.opendaylight.netconf.nettyutil.TimedReconnectStrategyFactory;
  34 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.AuthenticationHandler;
  35 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.LoginPasswordHandler;
  36 import org.opendaylight.netconf.sal.connect.api.DeviceActionFactory;
  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.auth.DatastoreBackedPublicKeyAuth;
  44 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCapabilities;
  45 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCommunicator;
  46 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfSessionPreferences;
  47 import org.opendaylight.netconf.sal.connect.netconf.listener.UserPreferences;
  48 import org.opendaylight.netconf.sal.connect.netconf.sal.KeepaliveSalFacade;
  49 import org.opendaylight.netconf.sal.connect.netconf.sal.NetconfKeystoreAdapter;
  50 import org.opendaylight.netconf.sal.connect.netconf.schema.YangLibrarySchemaYangSourceProvider;
  51 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  52 import org.opendaylight.netconf.sal.connect.util.SslHandlerFactoryImpl;
  53 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
  54 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfConnectorDTO;
  55 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  56 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  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.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.parameters.OdlHelloMessageCapabilities;
  62 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.parameters.Protocol;
  63 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability.CapabilityOrigin;
  64 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
  65 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.KeyAuth;
  66 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPw;
  67 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPwUnencrypted;
  68 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.key.auth.KeyBased;
  69 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.login.pw.LoginPassword;
  70 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.login.pw.unencrypted.LoginPasswordUnencrypted;
  71 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  72 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  73 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  74 import org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource;
  75 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceRegistration;
  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     // Initializes default constant instances for the case when the default schema repository
  84     // directory cache/schema is used.
  85
  86     private final NetconfTopologySetup netconfTopologyDeviceSetup;
  87     private final RemoteDeviceId remoteDeviceId;
  88     private final String privateKeyPath;
  89     private final String privateKeyPassphrase;
  90     private final AAAEncryptionService encryptionService;
  91     private NetconfConnectorDTO deviceCommunicatorDTO;
  92     private final NetconfKeystoreAdapter keystoreAdapter;
  93     private final DeviceActionFactory deviceActionFactory;
  94
  95     public RemoteDeviceConnectorImpl(final NetconfTopologySetup netconfTopologyDeviceSetup,
  96                                      final RemoteDeviceId remoteDeviceId,
  97                                      final DeviceActionFactory deviceActionFactory) {
  98
  99         this.netconfTopologyDeviceSetup = requireNonNull(netconfTopologyDeviceSetup);
 100         this.remoteDeviceId = remoteDeviceId;
 101         this.deviceActionFactory = requireNonNull(deviceActionFactory);
 102         this.privateKeyPath = netconfTopologyDeviceSetup.getPrivateKeyPath();
 103         this.privateKeyPassphrase = netconfTopologyDeviceSetup.getPrivateKeyPassphrase();
 104         this.encryptionService = netconfTopologyDeviceSetup.getEncryptionService();
 105         keystoreAdapter = new NetconfKeystoreAdapter(netconfTopologyDeviceSetup.getDataBroker());
 106     }
 107
 108     @Override
 109     public void startRemoteDeviceConnection(final RemoteDeviceHandler<NetconfSessionPreferences> deviceHandler) {
 110
 111         final NetconfNode netconfNode = netconfTopologyDeviceSetup.getNode().augmentation(NetconfNode.class);
 112         final NodeId nodeId = netconfTopologyDeviceSetup.getNode().getNodeId();
 113         requireNonNull(netconfNode.getHost());
 114         requireNonNull(netconfNode.getPort());
 115
 116         this.deviceCommunicatorDTO = createDeviceCommunicator(nodeId, netconfNode, deviceHandler);
 117         final NetconfDeviceCommunicator deviceCommunicator = deviceCommunicatorDTO.getCommunicator();
 118         final NetconfClientSessionListener netconfClientSessionListener = deviceCommunicatorDTO.getSessionListener();
 119         final NetconfReconnectingClientConfiguration clientConfig =
 120                 getClientConfig(netconfClientSessionListener, netconfNode);
 121         final ListenableFuture<NetconfDeviceCapabilities> future = deviceCommunicator
 122                 .initializeRemoteConnection(netconfTopologyDeviceSetup.getNetconfClientDispatcher(), clientConfig);
 123
 124         Futures.addCallback(future, new FutureCallback<NetconfDeviceCapabilities>() {
 125             @Override
 126             public void onSuccess(final NetconfDeviceCapabilities result) {
 127                 LOG.debug("{}: Connector started successfully", remoteDeviceId);
 128             }
 129
 130             @Override
 131             public void onFailure(final Throwable throwable) {
 132                 LOG.error("{}: Connector failed", remoteDeviceId, throwable);
 133             }
 134         }, MoreExecutors.directExecutor());
 135     }
 136
 137     @SuppressWarnings("checkstyle:IllegalCatch")
 138     @Override
 139     public void stopRemoteDeviceConnection() {
 140         if (deviceCommunicatorDTO != null) {
 141             try {
 142                 deviceCommunicatorDTO.close();
 143             } catch (final Exception e) {
 144                 LOG.error("{}: Error at closing device communicator.", remoteDeviceId, e);
 145             }
 146         }
 147     }
 148
 149     @VisibleForTesting
 150     NetconfConnectorDTO createDeviceCommunicator(final NodeId nodeId, final NetconfNode node,
 151                                                  final RemoteDeviceHandler<NetconfSessionPreferences> deviceHandler) {
 152         //setup default values since default value is not supported in mdsal
 153         final long defaultRequestTimeoutMillis = node.getDefaultRequestTimeoutMillis() == null
 154                 ? NetconfTopologyUtils.DEFAULT_REQUEST_TIMEOUT_MILLIS : node.getDefaultRequestTimeoutMillis();
 155         final long keepaliveDelay = node.getKeepaliveDelay() == null
 156                 ? NetconfTopologyUtils.DEFAULT_KEEPALIVE_DELAY : node.getKeepaliveDelay();
 157         final boolean reconnectOnChangedSchema = node.isReconnectOnChangedSchema() == null
 158                 ? NetconfTopologyUtils.DEFAULT_RECONNECT_ON_CHANGED_SCHEMA : node.isReconnectOnChangedSchema();
 159
 160         RemoteDeviceHandler<NetconfSessionPreferences> salFacade = deviceHandler;
 161         if (keepaliveDelay > 0) {
 162             LOG.info("{}: Adding keepalive facade.", remoteDeviceId);
 163             salFacade = new KeepaliveSalFacade(remoteDeviceId, salFacade,
 164                     netconfTopologyDeviceSetup.getKeepaliveExecutor(), keepaliveDelay,
 165                     defaultRequestTimeoutMillis);
 166         }
 167
 168         final NetconfDevice.SchemaResourcesDTO schemaResourcesDTO = netconfTopologyDeviceSetup.getSchemaResourcesDTO();
 169
 170         // pre register yang library sources as fallback schemas to schema registry
 171         final List<SchemaSourceRegistration<YangTextSchemaSource>> registeredYangLibSources = Lists.newArrayList();
 172         if (node.getYangLibrary() != null) {
 173             final String yangLibURL = node.getYangLibrary().getYangLibraryUrl().getValue();
 174             final String yangLibUsername = node.getYangLibrary().getUsername();
 175             final String yangLigPassword = node.getYangLibrary().getPassword();
 176
 177             final LibraryModulesSchemas libraryModulesSchemas;
 178             if (yangLibURL != null) {
 179                 if (yangLibUsername != null && yangLigPassword != null) {
 180                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL, yangLibUsername, yangLigPassword);
 181                 } else {
 182                     libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL);
 183                 }
 184
 185                 for (final Map.Entry<SourceIdentifier, URL> sourceIdentifierURLEntry :
 186                         libraryModulesSchemas.getAvailableModels().entrySet()) {
 187                     registeredYangLibSources
 188                             .add(schemaResourcesDTO.getSchemaRegistry().registerSchemaSource(
 189                                     new YangLibrarySchemaYangSourceProvider(remoteDeviceId,
 190                                             libraryModulesSchemas.getAvailableModels()),
 191                                     PotentialSchemaSource
 192                                             .create(sourceIdentifierURLEntry.getKey(), YangTextSchemaSource.class,
 193                                                     PotentialSchemaSource.Costs.REMOTE_IO.getValue())));
 194                 }
 195             }
 196         }
 197
 198         final RemoteDevice<NetconfSessionPreferences, NetconfMessage, NetconfDeviceCommunicator> device;
 199         if (node.isSchemaless()) {
 200             device = new SchemalessNetconfDevice(remoteDeviceId, salFacade);
 201         } else {
 202             device = new NetconfDeviceBuilder()
 203                     .setReconnectOnSchemasChange(reconnectOnChangedSchema)
 204                     .setSchemaResourcesDTO(schemaResourcesDTO)
 205                     .setGlobalProcessingExecutor(netconfTopologyDeviceSetup.getProcessingExecutor())
 206                     .setId(remoteDeviceId)
 207                     .setDeviceActionFactory(deviceActionFactory)
 208                     .setSalFacade(salFacade)
 209                     .build();
 210         }
 211
 212         final Optional<NetconfSessionPreferences> userCapabilities = getUserCapabilities(node);
 213         final int rpcMessageLimit =
 214                 node.getConcurrentRpcLimit() == null
 215                         ? NetconfTopologyUtils.DEFAULT_CONCURRENT_RPC_LIMIT : node.getConcurrentRpcLimit();
 216
 217         if (rpcMessageLimit < 1) {
 218             LOG.info("{}: Concurrent rpc limit is smaller than 1, no limit will be enforced.", remoteDeviceId);
 219         }
 220
 221         NetconfDeviceCommunicator netconfDeviceCommunicator =
 222              userCapabilities.isPresent() ? new NetconfDeviceCommunicator(remoteDeviceId, device,
 223              new UserPreferences(userCapabilities.get(),
 224                  node.getYangModuleCapabilities() == null ? false : node.getYangModuleCapabilities().isOverride(),
 225                  node.getNonModuleCapabilities() == null ? false : node.getNonModuleCapabilities().isOverride()),
 226              rpcMessageLimit)
 227             : new NetconfDeviceCommunicator(remoteDeviceId, device, rpcMessageLimit);
 228
 229         if (salFacade instanceof KeepaliveSalFacade) {
 230             ((KeepaliveSalFacade)salFacade).setListener(netconfDeviceCommunicator);
 231         }
 232         return new NetconfConnectorDTO(netconfDeviceCommunicator, salFacade);
 233     }
 234
 235     private static Optional<NetconfSessionPreferences> getUserCapabilities(final NetconfNode node) {
 236         if (node.getYangModuleCapabilities() == null && node.getNonModuleCapabilities() == null) {
 237             return Optional.empty();
 238         }
 239         final List<String> capabilities = new ArrayList<>();
 240
 241         if (node.getYangModuleCapabilities() != null) {
 242             capabilities.addAll(node.getYangModuleCapabilities().getCapability());
 243         }
 244
 245         //non-module capabilities should not exist in yang module capabilities
 246         final NetconfSessionPreferences netconfSessionPreferences = NetconfSessionPreferences.fromStrings(capabilities);
 247         checkState(netconfSessionPreferences.getNonModuleCaps().isEmpty(),
 248                 "List yang-module-capabilities/capability should contain only module based capabilities. "
 249                         + "Non-module capabilities used: " + netconfSessionPreferences.getNonModuleCaps());
 250
 251         if (node.getNonModuleCapabilities() != null) {
 252             capabilities.addAll(node.getNonModuleCapabilities().getCapability());
 253         }
 254
 255         return Optional.of(NetconfSessionPreferences.fromStrings(capabilities, CapabilityOrigin.UserDefined));
 256     }
 257
 258     //TODO: duplicate code
 259     private static InetSocketAddress getSocketAddress(final Host host, final int port) {
 260         if (host.getDomainName() != null) {
 261             return new InetSocketAddress(host.getDomainName().getValue(), port);
 262         } else {
 263             final IpAddress ipAddress = host.getIpAddress();
 264             final String ip = ipAddress.getIpv4Address() != null ? ipAddress.getIpv4Address().getValue() :
 265                     ipAddress.getIpv6Address().getValue();
 266             return new InetSocketAddress(ip, port);
 267         }
 268     }
 269
 270     @VisibleForTesting
 271     NetconfReconnectingClientConfiguration getClientConfig(final NetconfClientSessionListener listener,
 272                                                            final NetconfNode node) {
 273
 274         //setup default values since default value is not supported in mdsal
 275         final long clientConnectionTimeoutMillis = node.getConnectionTimeoutMillis() == null
 276                 ? NetconfTopologyUtils.DEFAULT_CONNECTION_TIMEOUT_MILLIS : node.getConnectionTimeoutMillis();
 277         final long maxConnectionAttempts = node.getMaxConnectionAttempts() == null
 278                 ? NetconfTopologyUtils.DEFAULT_MAX_CONNECTION_ATTEMPTS : node.getMaxConnectionAttempts();
 279         final int betweenAttemptsTimeoutMillis = node.getBetweenAttemptsTimeoutMillis() == null
 280                 ? NetconfTopologyUtils.DEFAULT_BETWEEN_ATTEMPTS_TIMEOUT_MILLIS : node.getBetweenAttemptsTimeoutMillis();
 281         final boolean isTcpOnly = node.isTcpOnly() == null
 282                 ? NetconfTopologyUtils.DEFAULT_IS_TCP_ONLY : node.isTcpOnly();
 283         final BigDecimal sleepFactor = node.getSleepFactor() == null
 284                 ? NetconfTopologyUtils.DEFAULT_SLEEP_FACTOR : node.getSleepFactor();
 285
 286         final InetSocketAddress socketAddress = getSocketAddress(node.getHost(), node.getPort().getValue());
 287
 288         final ReconnectStrategyFactory sf =
 289                 new TimedReconnectStrategyFactory(netconfTopologyDeviceSetup.getEventExecutor(), maxConnectionAttempts,
 290                         betweenAttemptsTimeoutMillis, sleepFactor);
 291
 292
 293         final NetconfReconnectingClientConfigurationBuilder reconnectingClientConfigurationBuilder;
 294         final Protocol protocol = node.getProtocol();
 295         if (isTcpOnly) {
 296             reconnectingClientConfigurationBuilder = NetconfReconnectingClientConfigurationBuilder.create()
 297                     .withProtocol(NetconfClientConfiguration.NetconfClientProtocol.TCP)
 298                     .withAuthHandler(getHandlerFromCredentials(node.getCredentials()));
 299         } else if (protocol == null || protocol.getName() == Protocol.Name.SSH) {
 300             reconnectingClientConfigurationBuilder = NetconfReconnectingClientConfigurationBuilder.create()
 301                     .withProtocol(NetconfClientConfiguration.NetconfClientProtocol.SSH)
 302                     .withAuthHandler(getHandlerFromCredentials(node.getCredentials()));
 303         } else if (protocol.getName() == Protocol.Name.TLS) {
 304             reconnectingClientConfigurationBuilder = NetconfReconnectingClientConfigurationBuilder.create()
 305                     .withSslHandlerFactory(new SslHandlerFactoryImpl(keystoreAdapter, protocol.getSpecification()))
 306                     .withProtocol(NetconfClientConfiguration.NetconfClientProtocol.TLS);
 307         } else {
 308             throw new IllegalStateException("Unsupported protocol type: " + protocol.getName());
 309         }
 310
 311         final List<Uri> odlHelloCapabilities = getOdlHelloCapabilities(node);
 312         if (odlHelloCapabilities != null) {
 313             reconnectingClientConfigurationBuilder.withOdlHelloCapabilities(odlHelloCapabilities);
 314         }
 315
 316         return reconnectingClientConfigurationBuilder
 317                 .withAddress(socketAddress)
 318                 .withConnectionTimeoutMillis(clientConnectionTimeoutMillis)
 319                 .withReconnectStrategy(sf.createReconnectStrategy())
 320                 .withConnectStrategyFactory(sf)
 321                 .withSessionListener(listener)
 322                 .build();
 323     }
 324
 325     private static List<Uri> getOdlHelloCapabilities(final NetconfNode node) {
 326         final OdlHelloMessageCapabilities helloCapabilities = node.getOdlHelloMessageCapabilities();
 327         return helloCapabilities != null ? helloCapabilities.getCapability() : null;
 328     }
 329
 330     private AuthenticationHandler getHandlerFromCredentials(final Credentials credentials) {
 331         if (credentials instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
 332                 .rev150114.netconf.node.credentials.credentials.LoginPassword) {
 333             final org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
 334                     .rev150114.netconf.node.credentials.credentials.LoginPassword loginPassword
 335                     = (org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
 336                     .rev150114.netconf.node.credentials.credentials.LoginPassword) credentials;
 337             return new LoginPasswordHandler(loginPassword.getUsername(), loginPassword.getPassword());
 338         }
 339         if (credentials instanceof LoginPwUnencrypted) {
 340             final LoginPasswordUnencrypted loginPassword =
 341                     ((LoginPwUnencrypted) credentials).getLoginPasswordUnencrypted();
 342             return new LoginPasswordHandler(loginPassword.getUsername(), loginPassword.getPassword());
 343         }
 344         if (credentials instanceof LoginPw) {
 345             final LoginPassword loginPassword = ((LoginPw) credentials).getLoginPassword();
 346             return new LoginPasswordHandler(loginPassword.getUsername(),
 347                     encryptionService.decrypt(loginPassword.getPassword()));
 348         }
 349         if (credentials instanceof KeyAuth) {
 350             final KeyBased keyPair = ((KeyAuth) credentials).getKeyBased();
 351             return new DatastoreBackedPublicKeyAuth(keyPair.getUsername(), keyPair.getKeyId(),
 352                     keystoreAdapter, encryptionService);
 353         }
 354         throw new IllegalStateException("Unsupported credential type: " + credentials.getClass());
 355     }
 356 }