opendaylight/netconf/netconf-testtool/src/main/java/org/opendaylight/controller/netconf/test/tool/NetconfDeviceSimulator.java

   1 /*
   2  * Copyright (c) 2014 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.controller.netconf.test.tool;
  10
  11 import com.google.common.base.Charsets;
  12 import com.google.common.base.Function;
  13 import com.google.common.base.MoreObjects;
  14 import com.google.common.base.Optional;
  15 import com.google.common.collect.Collections2;
  16 import com.google.common.collect.Lists;
  17 import com.google.common.collect.Maps;
  18 import com.google.common.collect.Sets;
  19 import com.google.common.io.CharStreams;
  20 import com.google.common.util.concurrent.CheckedFuture;
  21 import com.google.common.util.concurrent.Futures;
  22 import com.google.common.util.concurrent.ThreadFactoryBuilder;
  23 import io.netty.channel.Channel;
  24 import io.netty.channel.ChannelFuture;
  25 import io.netty.channel.local.LocalAddress;
  26 import io.netty.channel.nio.NioEventLoopGroup;
  27 import io.netty.util.HashedWheelTimer;
  28 import java.io.Closeable;
  29 import java.io.File;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.io.InputStreamReader;
  33 import java.lang.management.ManagementFactory;
  34 import java.net.BindException;
  35 import java.net.Inet4Address;
  36 import java.net.InetSocketAddress;
  37 import java.net.URI;
  38 import java.net.UnknownHostException;
  39 import java.nio.file.Files;
  40 import java.nio.file.Path;
  41 import java.util.AbstractMap;
  42 import java.util.Date;
  43 import java.util.HashMap;
  44 import java.util.List;
  45 import java.util.Map;
  46 import java.util.Set;
  47 import java.util.TreeMap;
  48 import java.util.concurrent.ExecutionException;
  49 import java.util.concurrent.ExecutorService;
  50 import java.util.concurrent.Executors;
  51 import java.util.concurrent.ScheduledExecutorService;
  52 import org.antlr.v4.runtime.ParserRuleContext;
  53 import org.antlr.v4.runtime.tree.ParseTreeWalker;
  54 import org.apache.sshd.common.util.ThreadUtils;
  55 import org.apache.sshd.server.PasswordAuthenticator;
  56 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  57 import org.apache.sshd.server.session.ServerSession;
  58 import org.opendaylight.controller.netconf.api.Capability;
  59 import org.opendaylight.controller.netconf.api.monitoring.CapabilityListener;
  60 import org.opendaylight.controller.netconf.api.monitoring.NetconfMonitoringService;
  61 import org.opendaylight.controller.netconf.api.xml.XmlNetconfConstants;
  62 import org.opendaylight.controller.netconf.impl.DefaultCommitNotificationProducer;
  63 import org.opendaylight.controller.netconf.impl.NetconfServerDispatcherImpl;
  64 import org.opendaylight.controller.netconf.impl.NetconfServerSessionNegotiatorFactory;
  65 import org.opendaylight.controller.netconf.impl.SessionIdProvider;
  66 import org.opendaylight.controller.netconf.impl.osgi.AggregatedNetconfOperationServiceFactory;
  67 import org.opendaylight.controller.netconf.impl.osgi.NetconfMonitoringServiceImpl;
  68 import org.opendaylight.controller.netconf.mapping.api.NetconfOperation;
  69 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationService;
  70 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceFactory;
  71 import org.opendaylight.controller.netconf.monitoring.osgi.NetconfMonitoringActivator;
  72 import org.opendaylight.controller.netconf.monitoring.osgi.NetconfMonitoringOperationService;
  73 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  74 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfiguration;
  75 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
  76 import org.opendaylight.controller.netconf.test.tool.rpc.DataList;
  77 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedCommit;
  78 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedCreateSubscription;
  79 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedEditConfig;
  80 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedGet;
  81 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedGetConfig;
  82 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedLock;
  83 import org.opendaylight.controller.netconf.test.tool.rpc.SimulatedUnLock;
  84 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  85 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceException;
  86 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceRepresentation;
  87 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  88 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  89 import org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource;
  90 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceListener;
  91 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  92 import org.opendaylight.yangtools.yang.model.repo.util.FilesystemSchemaSourceCache;
  93 import org.opendaylight.yangtools.yang.parser.builder.impl.BuilderUtils;
  94 import org.opendaylight.yangtools.yang.parser.builder.impl.ModuleBuilder;
  95 import org.opendaylight.yangtools.yang.parser.impl.YangParserListenerImpl;
  96 import org.opendaylight.yangtools.yang.parser.repo.SharedSchemaRepository;
  97 import org.opendaylight.yangtools.yang.parser.util.ASTSchemaSource;
  98 import org.opendaylight.yangtools.yang.parser.util.TextToASTTransformer;
  99 import org.slf4j.Logger;
 100 import org.slf4j.LoggerFactory;
 101
 102 public class NetconfDeviceSimulator implements Closeable {
 103
 104     private static final Logger LOG = LoggerFactory.getLogger(NetconfDeviceSimulator.class);
 105
 106     private final NioEventLoopGroup nettyThreadgroup;
 107     private final HashedWheelTimer hashedWheelTimer;
 108     private final List<Channel> devicesChannels = Lists.newArrayList();
 109     private final List<SshProxyServer> sshWrappers = Lists.newArrayList();
 110     private final ScheduledExecutorService minaTimerExecutor;
 111     private final ExecutorService nioExecutor;
 112
 113     private boolean sendFakeSchema = false;
 114
 115     public NetconfDeviceSimulator() {
 116         // TODO make pool size configurable
 117         this(new NioEventLoopGroup(), new HashedWheelTimer(),
 118                 Executors.newScheduledThreadPool(8, new ThreadFactoryBuilder().setNameFormat("netconf-ssh-server-mina-timers-%d").build()),
 119                 ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", 8));
 120     }
 121
 122     private NetconfDeviceSimulator(final NioEventLoopGroup eventExecutors, final HashedWheelTimer hashedWheelTimer, final ScheduledExecutorService minaTimerExecutor, final ExecutorService nioExecutor) {
 123         this.nettyThreadgroup = eventExecutors;
 124         this.hashedWheelTimer = hashedWheelTimer;
 125         this.minaTimerExecutor = minaTimerExecutor;
 126         this.nioExecutor = nioExecutor;
 127     }
 128
 129     private NetconfServerDispatcherImpl createDispatcher(final Map<ModuleBuilder, String> moduleBuilders, final boolean exi, final int generateConfigsTimeout, final Optional<File> notificationsFile) {
 130
 131         final Set<Capability> capabilities = Sets.newHashSet(Collections2.transform(moduleBuilders.keySet(), new Function<ModuleBuilder, Capability>() {
 132             @Override
 133             public Capability apply(final ModuleBuilder input) {
 134                 if (sendFakeSchema) {
 135                     sendFakeSchema = false;
 136                     return new FakeModuleBuilderCapability(input, moduleBuilders.get(input));
 137                 } else {
 138                     return new ModuleBuilderCapability(input, moduleBuilders.get(input));
 139                 }
 140             }
 141         }));
 142
 143         final SessionIdProvider idProvider = new SessionIdProvider();
 144
 145
 146         final AggregatedNetconfOperationServiceFactory aggregatedNetconfOperationServiceFactory = new AggregatedNetconfOperationServiceFactory();
 147         final SimulatedOperationProvider simulatedOperationProvider = new SimulatedOperationProvider(idProvider, capabilities, notificationsFile);
 148
 149         final NetconfMonitoringService monitoringService1 = new NetconfMonitoringServiceImpl(aggregatedNetconfOperationServiceFactory);
 150         final NetconfMonitoringActivator.NetconfMonitoringOperationServiceFactory monitoringService =
 151                 new NetconfMonitoringActivator.NetconfMonitoringOperationServiceFactory(new NetconfMonitoringOperationService(monitoringService1));
 152         aggregatedNetconfOperationServiceFactory.onAddNetconfOperationServiceFactory(simulatedOperationProvider);
 153         aggregatedNetconfOperationServiceFactory.onAddNetconfOperationServiceFactory(monitoringService);
 154
 155         final DefaultCommitNotificationProducer commitNotifier = new DefaultCommitNotificationProducer(ManagementFactory.getPlatformMBeanServer());
 156
 157         final Set<String> serverCapabilities = exi
 158                 ? NetconfServerSessionNegotiatorFactory.DEFAULT_BASE_CAPABILITIES
 159                 : Sets.newHashSet(XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_0, XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_1);
 160
 161         final NetconfServerSessionNegotiatorFactory serverNegotiatorFactory = new NetconfServerSessionNegotiatorFactory(
 162                 hashedWheelTimer, aggregatedNetconfOperationServiceFactory, idProvider, generateConfigsTimeout, commitNotifier, monitoringService1, serverCapabilities);
 163
 164         final NetconfServerDispatcherImpl.ServerChannelInitializer serverChannelInitializer = new NetconfServerDispatcherImpl.ServerChannelInitializer(
 165                 serverNegotiatorFactory);
 166         return new NetconfServerDispatcherImpl(serverChannelInitializer, nettyThreadgroup, nettyThreadgroup);
 167     }
 168
 169     private Map<ModuleBuilder, String> toModuleBuilders(final Map<SourceIdentifier, Map.Entry<ASTSchemaSource, YangTextSchemaSource>> sources) {
 170         final Map<SourceIdentifier, ParserRuleContext> asts = Maps.transformValues(sources, new Function<Map.Entry<ASTSchemaSource, YangTextSchemaSource>, ParserRuleContext>() {
 171             @Override
 172             public ParserRuleContext apply(final Map.Entry<ASTSchemaSource, YangTextSchemaSource> input) {
 173                 return input.getKey().getAST();
 174             }
 175         });
 176         final Map<String, TreeMap<Date, URI>> namespaceContext = BuilderUtils.createYangNamespaceContext(
 177                 asts.values(), Optional.<SchemaContext>absent());
 178
 179         final ParseTreeWalker walker = new ParseTreeWalker();
 180         final Map<ModuleBuilder, String> sourceToBuilder = new HashMap<>();
 181
 182         for (final Map.Entry<SourceIdentifier, ParserRuleContext> entry : asts.entrySet()) {
 183             final ModuleBuilder moduleBuilder = YangParserListenerImpl.create(namespaceContext, entry.getKey().getName(),
 184                     walker, entry.getValue()).getModuleBuilder();
 185
 186             try(InputStreamReader stream = new InputStreamReader(sources.get(entry.getKey()).getValue().openStream(), Charsets.UTF_8)) {
 187                 sourceToBuilder.put(moduleBuilder, CharStreams.toString(stream));
 188             } catch (final IOException e) {
 189                 throw new RuntimeException(e);
 190             }
 191         }
 192
 193         return sourceToBuilder;
 194     }
 195
 196
 197     public List<Integer> start(final Main.Params params) {
 198         LOG.info("Starting {}, {} simulated devices starting on port {}", params.deviceCount, params.ssh ? "SSH" : "TCP", params.startingPort);
 199
 200         final Map<ModuleBuilder, String> moduleBuilders = parseSchemasToModuleBuilders(params);
 201
 202         final NetconfServerDispatcherImpl dispatcher = createDispatcher(moduleBuilders, params.exi, params.generateConfigsTimeout, Optional.fromNullable(params.notificationFile));
 203
 204         int currentPort = params.startingPort;
 205
 206         final List<Integer> openDevices = Lists.newArrayList();
 207
 208         // Generate key to temp folder
 209         final PEMGeneratorHostKeyProvider keyPairProvider = getPemGeneratorHostKeyProvider();
 210
 211         for (int i = 0; i < params.deviceCount; i++) {
 212             if (currentPort > 65535) {
 213                 LOG.warn("Port cannot be greater than 65535, stopping further attempts.");
 214                 break;
 215             }
 216             final InetSocketAddress address = getAddress(currentPort);
 217
 218             final ChannelFuture server;
 219             if(params.ssh) {
 220                 final InetSocketAddress bindingAddress = InetSocketAddress.createUnresolved("0.0.0.0", currentPort);
 221                 final LocalAddress tcpLocalAddress = new LocalAddress(address.toString());
 222
 223                 server = dispatcher.createLocalServer(tcpLocalAddress);
 224                 try {
 225                     final SshProxyServer sshServer = new SshProxyServer(minaTimerExecutor, nettyThreadgroup, nioExecutor);
 226                     sshServer.bind(getSshConfiguration(bindingAddress, tcpLocalAddress, keyPairProvider));
 227                     sshWrappers.add(sshServer);
 228                 } catch (final BindException e) {
 229                     LOG.warn("Cannot start simulated device on {}, port already in use. Skipping.", address);
 230                     // Close local server and continue
 231                     server.cancel(true);
 232                     if(server.isDone()) {
 233                         server.channel().close();
 234                     }
 235                     continue;
 236                 } catch (final IOException e) {
 237                     LOG.warn("Cannot start simulated device on {} due to IOException.", address, e);
 238                     break;
 239                 } finally {
 240                     currentPort++;
 241                 }
 242
 243                 try {
 244                     server.get();
 245                 } catch (final InterruptedException e) {
 246                     throw new RuntimeException(e);
 247                 } catch (final ExecutionException e) {
 248                     LOG.warn("Cannot start ssh simulated device on {}, skipping", address, e);
 249                     continue;
 250                 }
 251
 252                 LOG.debug("Simulated SSH device started on {}", address);
 253
 254             } else {
 255                 server = dispatcher.createServer(address);
 256                 currentPort++;
 257
 258                 try {
 259                     server.get();
 260                 } catch (final InterruptedException e) {
 261                     throw new RuntimeException(e);
 262                 } catch (final ExecutionException e) {
 263                     LOG.warn("Cannot start tcp simulated device on {}, skipping", address, e);
 264                     continue;
 265                 }
 266
 267                 LOG.debug("Simulated TCP device started on {}", address);
 268             }
 269
 270             devicesChannels.add(server.channel());
 271             openDevices.add(currentPort - 1);
 272         }
 273
 274         if(openDevices.size() == params.deviceCount) {
 275             LOG.info("All simulated devices started successfully from port {} to {}", params.startingPort, currentPort - 1);
 276         } else if (openDevices.size() == 0) {
 277             LOG.warn("No simulated devices started.");
 278         } else {
 279             LOG.warn("Not all simulated devices started successfully. Started devices ar on ports {}", openDevices);
 280         }
 281
 282         return openDevices;
 283     }
 284
 285     private SshProxyServerConfiguration getSshConfiguration(final InetSocketAddress bindingAddress, final LocalAddress tcpLocalAddress, final PEMGeneratorHostKeyProvider keyPairProvider) throws IOException {
 286         return new SshProxyServerConfigurationBuilder()
 287                 .setBindingAddress(bindingAddress)
 288                 .setLocalAddress(tcpLocalAddress)
 289                 .setAuthenticator(new PasswordAuthenticator() {
 290                     @Override
 291                     public boolean authenticate(final String username, final String password, final ServerSession session) {
 292                         return true;
 293                     }
 294                 })
 295                 .setKeyPairProvider(keyPairProvider)
 296                 .setIdleTimeout(Integer.MAX_VALUE)
 297                 .createSshProxyServerConfiguration();
 298     }
 299
 300     private PEMGeneratorHostKeyProvider getPemGeneratorHostKeyProvider() {
 301         try {
 302             final Path tempFile = Files.createTempFile("tempKeyNetconfTest", "suffix");
 303             return new PEMGeneratorHostKeyProvider(tempFile.toAbsolutePath().toString());
 304         } catch (final IOException e) {
 305             LOG.error("Unable to generate PEM key", e);
 306             throw new RuntimeException(e);
 307         }
 308     }
 309
 310     private Map<ModuleBuilder, String> parseSchemasToModuleBuilders(final Main.Params params) {
 311         final SharedSchemaRepository consumer = new SharedSchemaRepository("netconf-simulator");
 312         consumer.registerSchemaSourceListener(TextToASTTransformer.create(consumer, consumer));
 313
 314         final Set<SourceIdentifier> loadedSources = Sets.newHashSet();
 315
 316         consumer.registerSchemaSourceListener(new SchemaSourceListener() {
 317             @Override
 318             public void schemaSourceEncountered(final SchemaSourceRepresentation schemaSourceRepresentation) {}
 319
 320             @Override
 321             public void schemaSourceRegistered(final Iterable<PotentialSchemaSource<?>> potentialSchemaSources) {
 322                 for (final PotentialSchemaSource<?> potentialSchemaSource : potentialSchemaSources) {
 323                     loadedSources.add(potentialSchemaSource.getSourceIdentifier());
 324                 }
 325             }
 326
 327             @Override
 328             public void schemaSourceUnregistered(final PotentialSchemaSource<?> potentialSchemaSource) {}
 329         });
 330
 331         if(params.schemasDir != null) {
 332             final FilesystemSchemaSourceCache<YangTextSchemaSource> cache = new FilesystemSchemaSourceCache<>(consumer, YangTextSchemaSource.class, params.schemasDir);
 333             consumer.registerSchemaSourceListener(cache);
 334         }
 335
 336         addDefaultSchemas(consumer);
 337
 338         final Map<SourceIdentifier, Map.Entry<ASTSchemaSource, YangTextSchemaSource>> asts = Maps.newHashMap();
 339         for (final SourceIdentifier loadedSource : loadedSources) {
 340             try {
 341                 final CheckedFuture<ASTSchemaSource, SchemaSourceException> ast = consumer.getSchemaSource(loadedSource, ASTSchemaSource.class);
 342                 final CheckedFuture<YangTextSchemaSource, SchemaSourceException> text = consumer.getSchemaSource(loadedSource, YangTextSchemaSource.class);
 343                 asts.put(loadedSource, new AbstractMap.SimpleEntry<>(ast.get(), text.get()));
 344             } catch (final InterruptedException e) {
 345                 throw new RuntimeException(e);
 346             } catch (final ExecutionException e) {
 347                 throw new RuntimeException("Cannot parse schema context", e);
 348             }
 349         }
 350         return toModuleBuilders(asts);
 351     }
 352
 353     private void addDefaultSchemas(final SharedSchemaRepository consumer) {
 354         SourceIdentifier sId = new SourceIdentifier("ietf-netconf-monitoring", "2010-10-04");
 355         registerSource(consumer, "/META-INF/yang/ietf-netconf-monitoring.yang", sId);
 356
 357         sId = new SourceIdentifier("ietf-yang-types", "2013-07-15");
 358         registerSource(consumer, "/META-INF/yang/ietf-yang-types@2013-07-15.yang", sId);
 359
 360         sId = new SourceIdentifier("ietf-inet-types", "2010-09-24");
 361         registerSource(consumer, "/META-INF/yang/ietf-inet-types.yang", sId);
 362     }
 363
 364     private void registerSource(final SharedSchemaRepository consumer, final String resource, final SourceIdentifier sourceId) {
 365         consumer.registerSchemaSource(new SchemaSourceProvider<SchemaSourceRepresentation>() {
 366             @Override
 367             public CheckedFuture<? extends SchemaSourceRepresentation, SchemaSourceException> getSource(final SourceIdentifier sourceIdentifier) {
 368                 return Futures.immediateCheckedFuture(new YangTextSchemaSource(sourceId) {
 369                     @Override
 370                     protected MoreObjects.ToStringHelper addToStringAttributes(final MoreObjects.ToStringHelper toStringHelper) {
 371                         return toStringHelper;
 372                     }
 373
 374                     @Override
 375                     public InputStream openStream() throws IOException {
 376                         return getClass().getResourceAsStream(resource);
 377                     }
 378                 });
 379             }
 380         }, PotentialSchemaSource.create(sourceId, YangTextSchemaSource.class, PotentialSchemaSource.Costs.IMMEDIATE.getValue()));
 381     }
 382
 383     private static InetSocketAddress getAddress(final int port) {
 384         try {
 385             // TODO make address configurable
 386             return new InetSocketAddress(Inet4Address.getByName("0.0.0.0"), port);
 387         } catch (final UnknownHostException e) {
 388             throw new RuntimeException(e);
 389         }
 390     }
 391
 392     @Override
 393     public void close() {
 394         for (final SshProxyServer sshWrapper : sshWrappers) {
 395             sshWrapper.close();
 396         }
 397         for (final Channel deviceCh : devicesChannels) {
 398             deviceCh.close();
 399         }
 400         nettyThreadgroup.shutdownGracefully();
 401         minaTimerExecutor.shutdownNow();
 402         nioExecutor.shutdownNow();
 403         // close Everything
 404     }
 405
 406     private static class SimulatedOperationProvider implements NetconfOperationServiceFactory {
 407         private final Set<Capability> caps;
 408         private final SimulatedOperationService simulatedOperationService;
 409
 410
 411         public SimulatedOperationProvider(final SessionIdProvider idProvider, final Set<Capability> caps, final Optional<File> notificationsFile) {
 412             this.caps = caps;
 413             simulatedOperationService = new SimulatedOperationService(idProvider.getCurrentSessionId(), notificationsFile);
 414         }
 415
 416         @Override
 417         public Set<Capability> getCapabilities() {
 418             return caps;
 419         }
 420
 421         @Override
 422         public AutoCloseable registerCapabilityListener(final CapabilityListener listener) {
 423             return new AutoCloseable() {
 424                 @Override
 425                 public void close() throws Exception {}
 426             };
 427         }
 428
 429         @Override
 430         public NetconfOperationService createService(final String netconfSessionIdForReporting) {
 431             return simulatedOperationService;
 432         }
 433
 434         static class SimulatedOperationService implements NetconfOperationService {
 435             private final long currentSessionId;
 436             private final Optional<File> notificationsFile;
 437
 438             public SimulatedOperationService(final long currentSessionId, final Optional<File> notificationsFile) {
 439                 this.currentSessionId = currentSessionId;
 440                 this.notificationsFile = notificationsFile;
 441             }
 442
 443             @Override
 444             public Set<NetconfOperation> getNetconfOperations() {
 445                 final DataList storage = new DataList();
 446                 final SimulatedGet sGet = new SimulatedGet(String.valueOf(currentSessionId), storage);
 447                 final SimulatedEditConfig sEditConfig = new SimulatedEditConfig(String.valueOf(currentSessionId), storage);
 448                 final SimulatedGetConfig sGetConfig = new SimulatedGetConfig(String.valueOf(currentSessionId), storage);
 449                 final SimulatedCommit sCommit = new SimulatedCommit(String.valueOf(currentSessionId));
 450                 final SimulatedLock sLock = new SimulatedLock(String.valueOf(currentSessionId));
 451                 final SimulatedUnLock sUnlock = new SimulatedUnLock(String.valueOf(currentSessionId));
 452                 final SimulatedCreateSubscription sCreateSubs = new SimulatedCreateSubscription(String.valueOf(currentSessionId), notificationsFile);
 453                 return Sets.<NetconfOperation>newHashSet(sGet,  sGetConfig, sEditConfig, sCommit, sLock, sUnlock, sCreateSubs);
 454             }
 455
 456             @Override
 457             public void close() {
 458             }
 459
 460         }
 461     }
 462
 463 }