/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.eclipse.aether.supplier;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.function.Supplier;
  
  import org.apache.maven.model.building.DefaultModelBuilderFactory;
  import org.apache.maven.model.building.ModelBuilder;
  import org.apache.maven.repository.internal.DefaultArtifactDescriptorReader;
  import org.apache.maven.repository.internal.DefaultModelCacheFactory;
  import org.apache.maven.repository.internal.DefaultVersionRangeResolver;
  import org.apache.maven.repository.internal.DefaultVersionResolver;
  import org.apache.maven.repository.internal.ModelCacheFactory;
  import org.apache.maven.repository.internal.PluginsMetadataGeneratorFactory;
  import org.apache.maven.repository.internal.SnapshotMetadataGeneratorFactory;
  import org.apache.maven.repository.internal.VersionsMetadataGeneratorFactory;
  import org.eclipse.aether.RepositoryListener;
  import org.eclipse.aether.RepositorySystem;
  import org.eclipse.aether.connector.basic.BasicRepositoryConnectorFactory;
  import org.eclipse.aether.impl.ArtifactDescriptorReader;
  import org.eclipse.aether.impl.ArtifactResolver;
  import org.eclipse.aether.impl.DependencyCollector;
  import org.eclipse.aether.impl.Deployer;
  import org.eclipse.aether.impl.Installer;
  import org.eclipse.aether.impl.LocalRepositoryProvider;
  import org.eclipse.aether.impl.MetadataGeneratorFactory;
  import org.eclipse.aether.impl.MetadataResolver;
  import org.eclipse.aether.impl.OfflineController;
  import org.eclipse.aether.impl.RemoteRepositoryFilterManager;
  import org.eclipse.aether.impl.RemoteRepositoryManager;
  import org.eclipse.aether.impl.RepositoryConnectorProvider;
  import org.eclipse.aether.impl.RepositoryEventDispatcher;
  import org.eclipse.aether.impl.RepositorySystemLifecycle;
  import org.eclipse.aether.impl.UpdateCheckManager;
  import org.eclipse.aether.impl.UpdatePolicyAnalyzer;
  import org.eclipse.aether.impl.VersionRangeResolver;
  import org.eclipse.aether.impl.VersionResolver;
  import org.eclipse.aether.internal.impl.DefaultArtifactResolver;
  import org.eclipse.aether.internal.impl.DefaultChecksumPolicyProvider;
  import org.eclipse.aether.internal.impl.DefaultDeployer;
  import org.eclipse.aether.internal.impl.DefaultFileProcessor;
  import org.eclipse.aether.internal.impl.DefaultInstaller;
  import org.eclipse.aether.internal.impl.DefaultLocalPathComposer;
  import org.eclipse.aether.internal.impl.DefaultLocalPathPrefixComposerFactory;
  import org.eclipse.aether.internal.impl.DefaultLocalRepositoryProvider;
  import org.eclipse.aether.internal.impl.DefaultMetadataResolver;
  import org.eclipse.aether.internal.impl.DefaultOfflineController;
  import org.eclipse.aether.internal.impl.DefaultRemoteRepositoryManager;
  import org.eclipse.aether.internal.impl.DefaultRepositoryConnectorProvider;
  import org.eclipse.aether.internal.impl.DefaultRepositoryEventDispatcher;
  import org.eclipse.aether.internal.impl.DefaultRepositoryLayoutProvider;
  import org.eclipse.aether.internal.impl.DefaultRepositorySystem;
  import org.eclipse.aether.internal.impl.DefaultRepositorySystemLifecycle;
  import org.eclipse.aether.internal.impl.DefaultTrackingFileManager;
  import org.eclipse.aether.internal.impl.DefaultTransporterProvider;
  import org.eclipse.aether.internal.impl.DefaultUpdateCheckManager;
  import org.eclipse.aether.internal.impl.DefaultUpdatePolicyAnalyzer;
  import org.eclipse.aether.internal.impl.EnhancedLocalRepositoryManagerFactory;
  import org.eclipse.aether.internal.impl.LocalPathComposer;
  import org.eclipse.aether.internal.impl.LocalPathPrefixComposerFactory;
  import org.eclipse.aether.internal.impl.Maven2RepositoryLayoutFactory;
  import org.eclipse.aether.internal.impl.SimpleLocalRepositoryManagerFactory;
  import org.eclipse.aether.internal.impl.TrackingFileManager;
  import org.eclipse.aether.internal.impl.checksum.DefaultChecksumAlgorithmFactorySelector;
  import org.eclipse.aether.internal.impl.checksum.Md5ChecksumAlgorithmFactory;
  import org.eclipse.aether.internal.impl.checksum.Sha1ChecksumAlgorithmFactory;
  import org.eclipse.aether.internal.impl.checksum.Sha256ChecksumAlgorithmFactory;
  import org.eclipse.aether.internal.impl.checksum.Sha512ChecksumAlgorithmFactory;
  import org.eclipse.aether.internal.impl.checksum.SparseDirectoryTrustedChecksumsSource;
  import org.eclipse.aether.internal.impl.checksum.SummaryFileTrustedChecksumsSource;
  import org.eclipse.aether.internal.impl.checksum.TrustedToProvidedChecksumsSourceAdapter;
  import org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector;
  import org.eclipse.aether.internal.impl.collect.DependencyCollectorDelegate;
  import org.eclipse.aether.internal.impl.collect.bf.BfDependencyCollector;
  import org.eclipse.aether.internal.impl.collect.df.DfDependencyCollector;
  import org.eclipse.aether.internal.impl.filter.DefaultRemoteRepositoryFilterManager;
  import org.eclipse.aether.internal.impl.filter.GroupIdRemoteRepositoryFilterSource;
  import org.eclipse.aether.internal.impl.filter.PrefixesRemoteRepositoryFilterSource;
  import org.eclipse.aether.internal.impl.resolution.TrustedChecksumsArtifactResolverPostProcessor;
  import org.eclipse.aether.internal.impl.synccontext.DefaultSyncContextFactory;
  import org.eclipse.aether.internal.impl.synccontext.named.NameMapper;
 import org.eclipse.aether.internal.impl.synccontext.named.NameMappers;
 import org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactoryAdapterFactory;
 import org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactoryAdapterFactoryImpl;
 import org.eclipse.aether.named.NamedLockFactory;
 import org.eclipse.aether.named.providers.FileLockNamedLockFactory;
 import org.eclipse.aether.named.providers.LocalReadWriteLockNamedLockFactory;
 import org.eclipse.aether.named.providers.LocalSemaphoreNamedLockFactory;
 import org.eclipse.aether.named.providers.NoopNamedLockFactory;
 import org.eclipse.aether.spi.checksums.ProvidedChecksumsSource;
 import org.eclipse.aether.spi.checksums.TrustedChecksumsSource;
 import org.eclipse.aether.spi.connector.RepositoryConnectorFactory;
 import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactory;
 import org.eclipse.aether.spi.connector.checksum.ChecksumAlgorithmFactorySelector;
 import org.eclipse.aether.spi.connector.checksum.ChecksumPolicyProvider;
 import org.eclipse.aether.spi.connector.filter.RemoteRepositoryFilterSource;
 import org.eclipse.aether.spi.connector.layout.RepositoryLayoutFactory;
 import org.eclipse.aether.spi.connector.layout.RepositoryLayoutProvider;
 import org.eclipse.aether.spi.connector.transport.TransporterFactory;
 import org.eclipse.aether.spi.connector.transport.TransporterProvider;
 import org.eclipse.aether.spi.io.FileProcessor;
 import org.eclipse.aether.spi.localrepo.LocalRepositoryManagerFactory;
 import org.eclipse.aether.spi.resolution.ArtifactResolverPostProcessor;
 import org.eclipse.aether.spi.synccontext.SyncContextFactory;
 import org.eclipse.aether.transport.file.FileTransporterFactory;
 import org.eclipse.aether.transport.http.ChecksumExtractor;
 import org.eclipse.aether.transport.http.HttpTransporterFactory;
 import org.eclipse.aether.transport.http.Nexus2ChecksumExtractor;
 import org.eclipse.aether.transport.http.XChecksumChecksumExtractor;
 import org.eclipse.aether.util.version.GenericVersionScheme;
 import org.eclipse.aether.version.VersionScheme;
 
 /**
  * A simple {@link Supplier} of {@link org.eclipse.aether.RepositorySystem} instances, that on each call supplies newly
  * constructed instance. For proper shut down, use {@link RepositorySystem#shutdown()} method on supplied instance(s).
  * <p>
  * Extend this class and override methods to customize, if needed.
  *
  * @since 1.9.15
  */
 public class RepositorySystemSupplier implements Supplier<RepositorySystem> {
     protected FileProcessor getFileProcessor() {
         return new DefaultFileProcessor();
     }
 
     protected TrackingFileManager getTrackingFileManager() {
         return new DefaultTrackingFileManager();
     }
 
     protected LocalPathComposer getLocalPathComposer() {
         return new DefaultLocalPathComposer();
     }
 
     protected LocalPathPrefixComposerFactory getLocalPathPrefixComposerFactory() {
         return new DefaultLocalPathPrefixComposerFactory();
     }
 
     protected RepositorySystemLifecycle getRepositorySystemLifecycle() {
         return new DefaultRepositorySystemLifecycle();
     }
 
     protected OfflineController getOfflineController() {
         return new DefaultOfflineController();
     }
 
     protected UpdatePolicyAnalyzer getUpdatePolicyAnalyzer() {
         return new DefaultUpdatePolicyAnalyzer();
     }
 
     protected ChecksumPolicyProvider getChecksumPolicyProvider() {
         return new DefaultChecksumPolicyProvider();
     }
 
     protected UpdateCheckManager getUpdateCheckManager(
             TrackingFileManager trackingFileManager, UpdatePolicyAnalyzer updatePolicyAnalyzer) {
         return new DefaultUpdateCheckManager(trackingFileManager, updatePolicyAnalyzer);
     }
 
     protected Map<String, NamedLockFactory> getNamedLockFactories() {
         HashMap<String, NamedLockFactory> result = new HashMap<>();
         result.put(NoopNamedLockFactory.NAME, new NoopNamedLockFactory());
         result.put(LocalReadWriteLockNamedLockFactory.NAME, new LocalReadWriteLockNamedLockFactory());
         result.put(LocalSemaphoreNamedLockFactory.NAME, new LocalSemaphoreNamedLockFactory());
         result.put(FileLockNamedLockFactory.NAME, new FileLockNamedLockFactory());
         return result;
     }
 
     protected Map<String, NameMapper> getNameMappers() {
         HashMap<String, NameMapper> result = new HashMap<>();
         result.put(NameMappers.STATIC_NAME, NameMappers.staticNameMapper());
         result.put(NameMappers.GAV_NAME, NameMappers.gavNameMapper());
         result.put(NameMappers.DISCRIMINATING_NAME, NameMappers.discriminatingNameMapper());
         result.put(NameMappers.FILE_GAV_NAME, NameMappers.fileGavNameMapper());
         result.put(NameMappers.FILE_HGAV_NAME, NameMappers.fileHashingGavNameMapper());
         return result;
     }
 
     protected NamedLockFactoryAdapterFactory getNamedLockFactoryAdapterFactory(
             Map<String, NamedLockFactory> namedLockFactories,
             Map<String, NameMapper> nameMappers,
             RepositorySystemLifecycle repositorySystemLifecycle) {
         return new NamedLockFactoryAdapterFactoryImpl(namedLockFactories, nameMappers, repositorySystemLifecycle);
     }
 
     protected SyncContextFactory getSyncContextFactory(NamedLockFactoryAdapterFactory namedLockFactoryAdapterFactory) {
         return new DefaultSyncContextFactory(namedLockFactoryAdapterFactory);
     }
 
     protected Map<String, ChecksumAlgorithmFactory> getChecksumAlgorithmFactories() {
         HashMap<String, ChecksumAlgorithmFactory> result = new HashMap<>();
         result.put(Sha512ChecksumAlgorithmFactory.NAME, new Sha512ChecksumAlgorithmFactory());
         result.put(Sha256ChecksumAlgorithmFactory.NAME, new Sha256ChecksumAlgorithmFactory());
         result.put(Sha1ChecksumAlgorithmFactory.NAME, new Sha1ChecksumAlgorithmFactory());
         result.put(Md5ChecksumAlgorithmFactory.NAME, new Md5ChecksumAlgorithmFactory());
         return result;
     }
 
     protected ChecksumAlgorithmFactorySelector getChecksumAlgorithmFactorySelector(
             Map<String, ChecksumAlgorithmFactory> checksumAlgorithmFactories) {
         return new DefaultChecksumAlgorithmFactorySelector(checksumAlgorithmFactories);
     }
 
     protected Map<String, RepositoryLayoutFactory> getRepositoryLayoutFactories(
             ChecksumAlgorithmFactorySelector checksumAlgorithmFactorySelector) {
         HashMap<String, RepositoryLayoutFactory> result = new HashMap<>();
         result.put(
                 Maven2RepositoryLayoutFactory.NAME,
                 new Maven2RepositoryLayoutFactory(checksumAlgorithmFactorySelector));
         return result;
     }
 
     protected RepositoryLayoutProvider getRepositoryLayoutProvider(
             Map<String, RepositoryLayoutFactory> repositoryLayoutFactories) {
         return new DefaultRepositoryLayoutProvider(repositoryLayoutFactories);
     }
 
     protected LocalRepositoryProvider getLocalRepositoryProvider(
             LocalPathComposer localPathComposer,
             TrackingFileManager trackingFileManager,
             LocalPathPrefixComposerFactory localPathPrefixComposerFactory) {
         HashMap<String, LocalRepositoryManagerFactory> localRepositoryProviders = new HashMap<>(2);
         localRepositoryProviders.put(
                 SimpleLocalRepositoryManagerFactory.NAME, new SimpleLocalRepositoryManagerFactory(localPathComposer));
         localRepositoryProviders.put(
                 EnhancedLocalRepositoryManagerFactory.NAME,
                 new EnhancedLocalRepositoryManagerFactory(
                         localPathComposer, trackingFileManager, localPathPrefixComposerFactory));
         return new DefaultLocalRepositoryProvider(localRepositoryProviders);
     }
 
     protected RemoteRepositoryManager getRemoteRepositoryManager(
             UpdatePolicyAnalyzer updatePolicyAnalyzer, ChecksumPolicyProvider checksumPolicyProvider) {
         return new DefaultRemoteRepositoryManager(updatePolicyAnalyzer, checksumPolicyProvider);
     }
 
     protected Map<String, RemoteRepositoryFilterSource> getRemoteRepositoryFilterSources(
             RepositorySystemLifecycle repositorySystemLifecycle, RepositoryLayoutProvider repositoryLayoutProvider) {
         HashMap<String, RemoteRepositoryFilterSource> result = new HashMap<>();
         result.put(
                 GroupIdRemoteRepositoryFilterSource.NAME,
                 new GroupIdRemoteRepositoryFilterSource(repositorySystemLifecycle));
         result.put(
                 PrefixesRemoteRepositoryFilterSource.NAME,
                 new PrefixesRemoteRepositoryFilterSource(repositoryLayoutProvider));
         return result;
     }
 
     protected RemoteRepositoryFilterManager getRemoteRepositoryFilterManager(
             Map<String, RemoteRepositoryFilterSource> remoteRepositoryFilterSources) {
         return new DefaultRemoteRepositoryFilterManager(remoteRepositoryFilterSources);
     }
 
     protected Map<String, RepositoryListener> getRepositoryListeners() {
         return new HashMap<>();
     }
 
     protected RepositoryEventDispatcher getRepositoryEventDispatcher(
             Map<String, RepositoryListener> repositoryListeners) {
         return new DefaultRepositoryEventDispatcher(repositoryListeners);
     }
 
     protected Map<String, TrustedChecksumsSource> getTrustedChecksumsSources(
             FileProcessor fileProcessor,
             LocalPathComposer localPathComposer,
             RepositorySystemLifecycle repositorySystemLifecycle) {
         HashMap<String, TrustedChecksumsSource> result = new HashMap<>();
         result.put(
                 SparseDirectoryTrustedChecksumsSource.NAME,
                 new SparseDirectoryTrustedChecksumsSource(fileProcessor, localPathComposer));
         result.put(
                 SummaryFileTrustedChecksumsSource.NAME,
                 new SummaryFileTrustedChecksumsSource(localPathComposer, repositorySystemLifecycle));
         return result;
     }
 
     protected Map<String, ProvidedChecksumsSource> getProvidedChecksumsSources(
             Map<String, TrustedChecksumsSource> trustedChecksumsSources) {
         HashMap<String, ProvidedChecksumsSource> result = new HashMap<>();
         result.put(
                 TrustedToProvidedChecksumsSourceAdapter.NAME,
                 new TrustedToProvidedChecksumsSourceAdapter(trustedChecksumsSources));
         return result;
     }
 
     protected Map<String, ChecksumExtractor> getChecksumExtractors() {
         HashMap<String, ChecksumExtractor> result = new HashMap<>();
         result.put(Nexus2ChecksumExtractor.NAME, new Nexus2ChecksumExtractor());
         result.put(XChecksumChecksumExtractor.NAME, new XChecksumChecksumExtractor());
         return result;
     }
 
     protected Map<String, TransporterFactory> getTransporterFactories(Map<String, ChecksumExtractor> extractors) {
         HashMap<String, TransporterFactory> result = new HashMap<>();
         result.put(FileTransporterFactory.NAME, new FileTransporterFactory());
         result.put(HttpTransporterFactory.NAME, new HttpTransporterFactory(extractors));
         return result;
     }
 
     protected TransporterProvider getTransporterProvider(Map<String, TransporterFactory> transporterFactories) {
         return new DefaultTransporterProvider(transporterFactories);
     }
 
     protected BasicRepositoryConnectorFactory getBasicRepositoryConnectorFactory(
             TransporterProvider transporterProvider,
             RepositoryLayoutProvider repositoryLayoutProvider,
             ChecksumPolicyProvider checksumPolicyProvider,
             FileProcessor fileProcessor,
             Map<String, ProvidedChecksumsSource> providedChecksumsSources) {
         return new BasicRepositoryConnectorFactory(
                 transporterProvider,
                 repositoryLayoutProvider,
                 checksumPolicyProvider,
                 fileProcessor,
                 providedChecksumsSources);
     }
 
     protected Map<String, RepositoryConnectorFactory> getRepositoryConnectorFactories(
             BasicRepositoryConnectorFactory basicRepositoryConnectorFactory) {
         HashMap<String, RepositoryConnectorFactory> result = new HashMap<>();
         result.put(BasicRepositoryConnectorFactory.NAME, basicRepositoryConnectorFactory);
         return result;
     }
 
     protected RepositoryConnectorProvider getRepositoryConnectorProvider(
             Map<String, RepositoryConnectorFactory> repositoryConnectorFactories,
             RemoteRepositoryFilterManager remoteRepositoryFilterManager) {
         return new DefaultRepositoryConnectorProvider(repositoryConnectorFactories, remoteRepositoryFilterManager);
     }
 
     protected Installer getInstaller(
             FileProcessor fileProcessor,
             RepositoryEventDispatcher repositoryEventDispatcher,
             Map<String, MetadataGeneratorFactory> metadataGeneratorFactories,
             SyncContextFactory syncContextFactory) {
         return new DefaultInstaller(
                 fileProcessor, repositoryEventDispatcher, metadataGeneratorFactories, syncContextFactory);
     }
 
     @SuppressWarnings("checkstyle:parameternumber")
     protected Deployer getDeployer(
             FileProcessor fileProcessor,
             RepositoryEventDispatcher repositoryEventDispatcher,
             RepositoryConnectorProvider repositoryConnectorProvider,
             RemoteRepositoryManager remoteRepositoryManager,
             UpdateCheckManager updateCheckManager,
             Map<String, MetadataGeneratorFactory> metadataGeneratorFactories,
             SyncContextFactory syncContextFactory,
             OfflineController offlineController) {
         return new DefaultDeployer(
                 fileProcessor,
                 repositoryEventDispatcher,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 updateCheckManager,
                 metadataGeneratorFactories,
                 syncContextFactory,
                 offlineController);
     }
 
     protected Map<String, DependencyCollectorDelegate> getDependencyCollectorDelegates(
             RemoteRepositoryManager remoteRepositoryManager,
             ArtifactDescriptorReader artifactDescriptorReader,
             VersionRangeResolver versionRangeResolver) {
         HashMap<String, DependencyCollectorDelegate> result = new HashMap<>();
         result.put(
                 DfDependencyCollector.NAME,
                 new DfDependencyCollector(remoteRepositoryManager, artifactDescriptorReader, versionRangeResolver));
         result.put(
                 BfDependencyCollector.NAME,
                 new BfDependencyCollector(remoteRepositoryManager, artifactDescriptorReader, versionRangeResolver));
         return result;
     }
 
     protected DependencyCollector getDependencyCollector(
             Map<String, DependencyCollectorDelegate> dependencyCollectorDelegates) {
         return new DefaultDependencyCollector(dependencyCollectorDelegates);
     }
 
     protected Map<String, ArtifactResolverPostProcessor> getArtifactResolverPostProcessors(
             ChecksumAlgorithmFactorySelector checksumAlgorithmFactorySelector,
             Map<String, TrustedChecksumsSource> trustedChecksumsSources) {
         HashMap<String, ArtifactResolverPostProcessor> result = new HashMap<>();
         result.put(
                 TrustedChecksumsArtifactResolverPostProcessor.NAME,
                 new TrustedChecksumsArtifactResolverPostProcessor(
                         checksumAlgorithmFactorySelector, trustedChecksumsSources));
         return result;
     }
 
     @SuppressWarnings("checkstyle:parameternumber")
     protected ArtifactResolver getArtifactResolver(
             FileProcessor fileProcessor,
             RepositoryEventDispatcher repositoryEventDispatcher,
             VersionResolver versionResolver,
             UpdateCheckManager updateCheckManager,
             RepositoryConnectorProvider repositoryConnectorProvider,
             RemoteRepositoryManager remoteRepositoryManager,
             SyncContextFactory syncContextFactory,
             OfflineController offlineController,
             Map<String, ArtifactResolverPostProcessor> artifactResolverPostProcessors,
             RemoteRepositoryFilterManager remoteRepositoryFilterManager) {
         return new DefaultArtifactResolver(
                 fileProcessor,
                 repositoryEventDispatcher,
                 versionResolver,
                 updateCheckManager,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 syncContextFactory,
                 offlineController,
                 artifactResolverPostProcessors,
                 remoteRepositoryFilterManager);
     }
 
     protected MetadataResolver getMetadataResolver(
             RepositoryEventDispatcher repositoryEventDispatcher,
             UpdateCheckManager updateCheckManager,
             RepositoryConnectorProvider repositoryConnectorProvider,
             RemoteRepositoryManager remoteRepositoryManager,
             SyncContextFactory syncContextFactory,
             OfflineController offlineController,
             RemoteRepositoryFilterManager remoteRepositoryFilterManager) {
         return new DefaultMetadataResolver(
                 repositoryEventDispatcher,
                 updateCheckManager,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 syncContextFactory,
                 offlineController,
                 remoteRepositoryFilterManager);
     }
 
     protected VersionScheme getVersionScheme() {
         return new GenericVersionScheme();
     }
 
     // Maven provided
 
     protected Map<String, MetadataGeneratorFactory> getMetadataGeneratorFactories() {
         // from maven-resolver-provider
         HashMap<String, MetadataGeneratorFactory> result = new HashMap<>();
         result.put(PluginsMetadataGeneratorFactory.NAME, new PluginsMetadataGeneratorFactory());
         result.put(VersionsMetadataGeneratorFactory.NAME, new VersionsMetadataGeneratorFactory());
         result.put(SnapshotMetadataGeneratorFactory.NAME, new SnapshotMetadataGeneratorFactory());
         return result;
     }
 
     protected ArtifactDescriptorReader getArtifactDescriptorReader(
             RemoteRepositoryManager remoteRepositoryManager,
             VersionResolver versionResolver,
             VersionRangeResolver versionRangeResolver,
             ArtifactResolver artifactResolver,
             ModelBuilder modelBuilder,
             RepositoryEventDispatcher repositoryEventDispatcher,
             ModelCacheFactory modelCacheFactory) {
         // from maven-resolver-provider
         return new DefaultArtifactDescriptorReader(
                 remoteRepositoryManager,
                 versionResolver,
                 versionRangeResolver,
                 artifactResolver,
                 modelBuilder,
                 repositoryEventDispatcher,
                 modelCacheFactory);
     }
 
     protected VersionResolver getVersionResolver(
             MetadataResolver metadataResolver,
             SyncContextFactory syncContextFactory,
             RepositoryEventDispatcher repositoryEventDispatcher) {
         // from maven-resolver-provider
         return new DefaultVersionResolver(metadataResolver, syncContextFactory, repositoryEventDispatcher);
     }
 
     protected VersionRangeResolver getVersionRangeResolver(
             MetadataResolver metadataResolver,
             SyncContextFactory syncContextFactory,
             RepositoryEventDispatcher repositoryEventDispatcher,
             VersionScheme versionScheme) {
         // from maven-resolver-provider
         return new DefaultVersionRangeResolver(
                 metadataResolver, syncContextFactory, repositoryEventDispatcher, versionScheme);
     }
 
     protected ModelBuilder getModelBuilder() {
         // from maven-model-builder
         return new DefaultModelBuilderFactory().newInstance();
     }
 
     protected ModelCacheFactory getModelCacheFactory() {
         // from maven-resolver-provider
         return new DefaultModelCacheFactory();
     }
 
     @Override
     public RepositorySystem get() {
         FileProcessor fileProcessor = getFileProcessor();
         TrackingFileManager trackingFileManager = getTrackingFileManager();
         LocalPathComposer localPathComposer = getLocalPathComposer();
         LocalPathPrefixComposerFactory localPathPrefixComposerFactory = getLocalPathPrefixComposerFactory();
         RepositorySystemLifecycle repositorySystemLifecycle = getRepositorySystemLifecycle();
         OfflineController offlineController = getOfflineController();
         UpdatePolicyAnalyzer updatePolicyAnalyzer = getUpdatePolicyAnalyzer();
         ChecksumPolicyProvider checksumPolicyProvider = getChecksumPolicyProvider();
 
         UpdateCheckManager updateCheckManager = getUpdateCheckManager(trackingFileManager, updatePolicyAnalyzer);
 
         Map<String, NamedLockFactory> namedLockFactories = getNamedLockFactories();
         Map<String, NameMapper> nameMappers = getNameMappers();
         NamedLockFactoryAdapterFactory namedLockFactoryAdapterFactory =
                 getNamedLockFactoryAdapterFactory(namedLockFactories, nameMappers, repositorySystemLifecycle);
         SyncContextFactory syncContextFactory = getSyncContextFactory(namedLockFactoryAdapterFactory);
 
         Map<String, ChecksumAlgorithmFactory> checksumAlgorithmFactories = getChecksumAlgorithmFactories();
         ChecksumAlgorithmFactorySelector checksumAlgorithmFactorySelector =
                 getChecksumAlgorithmFactorySelector(checksumAlgorithmFactories);
 
         Map<String, RepositoryLayoutFactory> repositoryLayoutFactories =
                 getRepositoryLayoutFactories(checksumAlgorithmFactorySelector);
         RepositoryLayoutProvider repositoryLayoutProvider = getRepositoryLayoutProvider(repositoryLayoutFactories);
 
         LocalRepositoryProvider localRepositoryProvider =
                 getLocalRepositoryProvider(localPathComposer, trackingFileManager, localPathPrefixComposerFactory);
 
         RemoteRepositoryManager remoteRepositoryManager =
                 getRemoteRepositoryManager(updatePolicyAnalyzer, checksumPolicyProvider);
         Map<String, RemoteRepositoryFilterSource> remoteRepositoryFilterSources =
                 getRemoteRepositoryFilterSources(repositorySystemLifecycle, repositoryLayoutProvider);
         RemoteRepositoryFilterManager remoteRepositoryFilterManager =
                 getRemoteRepositoryFilterManager(remoteRepositoryFilterSources);
 
         Map<String, RepositoryListener> repositoryListeners = getRepositoryListeners();
         RepositoryEventDispatcher repositoryEventDispatcher = getRepositoryEventDispatcher(repositoryListeners);
 
         Map<String, TrustedChecksumsSource> trustedChecksumsSources =
                 getTrustedChecksumsSources(fileProcessor, localPathComposer, repositorySystemLifecycle);
         Map<String, ProvidedChecksumsSource> providedChecksumsSources =
                 getProvidedChecksumsSources(trustedChecksumsSources);
 
         Map<String, ChecksumExtractor> checksumExtractors = getChecksumExtractors();
         Map<String, TransporterFactory> transporterFactories = getTransporterFactories(checksumExtractors);
         TransporterProvider transporterProvider = getTransporterProvider(transporterFactories);
 
         BasicRepositoryConnectorFactory basic = getBasicRepositoryConnectorFactory(
                 transporterProvider,
                 repositoryLayoutProvider,
                 checksumPolicyProvider,
                 fileProcessor,
                 providedChecksumsSources);
         Map<String, RepositoryConnectorFactory> repositoryConnectorFactories = getRepositoryConnectorFactories(basic);
         RepositoryConnectorProvider repositoryConnectorProvider =
                 getRepositoryConnectorProvider(repositoryConnectorFactories, remoteRepositoryFilterManager);
 
         Map<String, MetadataGeneratorFactory> metadataGeneratorFactories = getMetadataGeneratorFactories();
 
         Installer installer =
                 getInstaller(fileProcessor, repositoryEventDispatcher, metadataGeneratorFactories, syncContextFactory);
         Deployer deployer = getDeployer(
                 fileProcessor,
                 repositoryEventDispatcher,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 updateCheckManager,
                 metadataGeneratorFactories,
                 syncContextFactory,
                 offlineController);
 
         MetadataResolver metadataResolver = getMetadataResolver(
                 repositoryEventDispatcher,
                 updateCheckManager,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 syncContextFactory,
                 offlineController,
                 remoteRepositoryFilterManager);
 
         VersionScheme versionScheme = getVersionScheme();
         VersionResolver versionResolver =
                 getVersionResolver(metadataResolver, syncContextFactory, repositoryEventDispatcher);
         VersionRangeResolver versionRangeResolver =
                 getVersionRangeResolver(metadataResolver, syncContextFactory, repositoryEventDispatcher, versionScheme);
 
         Map<String, ArtifactResolverPostProcessor> artifactResolverPostProcessors =
                 getArtifactResolverPostProcessors(checksumAlgorithmFactorySelector, trustedChecksumsSources);
         ArtifactResolver artifactResolver = getArtifactResolver(
                 fileProcessor,
                 repositoryEventDispatcher,
                 versionResolver,
                 updateCheckManager,
                 repositoryConnectorProvider,
                 remoteRepositoryManager,
                 syncContextFactory,
                 offlineController,
                 artifactResolverPostProcessors,
                 remoteRepositoryFilterManager);
 
         ModelBuilder modelBuilder = getModelBuilder();
         ModelCacheFactory modelCacheFactory = getModelCacheFactory();
 
         ArtifactDescriptorReader artifactDescriptorReader = getArtifactDescriptorReader(
                 remoteRepositoryManager,
                 versionResolver,
                 versionRangeResolver,
                 artifactResolver,
                 modelBuilder,
                 repositoryEventDispatcher,
                 modelCacheFactory);
 
         Map<String, DependencyCollectorDelegate> dependencyCollectorDelegates = getDependencyCollectorDelegates(
                 remoteRepositoryManager, artifactDescriptorReader, versionRangeResolver);
         DependencyCollector dependencyCollector = getDependencyCollector(dependencyCollectorDelegates);
 
         return new DefaultRepositorySystem(
                 versionResolver,
                 versionRangeResolver,
                 artifactResolver,
                 metadataResolver,
                 artifactDescriptorReader,
                 dependencyCollector,
                 installer,
                 deployer,
                 localRepositoryProvider,
                 syncContextFactory,
                 remoteRepositoryManager,
                 repositorySystemLifecycle);
     }
 }