cstamas commented on code in PR #161: URL: https://github.com/apache/maven-resolver/pull/161#discussion_r845926544
########## maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/collect/df/DfDependencyCollector.java: ########## @@ -0,0 +1,866 @@ +package org.eclipse.aether.internal.impl.collect.df; + +/* + * 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. + */ + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import static java.util.Objects.requireNonNull; + +import javax.inject.Inject; +import javax.inject.Named; +import javax.inject.Singleton; + +import org.eclipse.aether.DefaultRepositorySystemSession; +import org.eclipse.aether.RepositoryException; +import org.eclipse.aether.RepositorySystemSession; +import org.eclipse.aether.RequestTrace; +import org.eclipse.aether.artifact.Artifact; +import org.eclipse.aether.artifact.ArtifactProperties; +import org.eclipse.aether.collection.CollectRequest; +import org.eclipse.aether.collection.CollectResult; +import org.eclipse.aether.collection.DependencyCollectionException; +import org.eclipse.aether.collection.DependencyGraphTransformer; +import org.eclipse.aether.collection.DependencyManagement; +import org.eclipse.aether.collection.DependencyManager; +import org.eclipse.aether.collection.DependencySelector; +import org.eclipse.aether.collection.DependencyTraverser; +import org.eclipse.aether.collection.VersionFilter; +import org.eclipse.aether.graph.DefaultDependencyNode; +import org.eclipse.aether.graph.Dependency; +import org.eclipse.aether.graph.DependencyNode; +import org.eclipse.aether.graph.Exclusion; +import org.eclipse.aether.impl.ArtifactDescriptorReader; +import org.eclipse.aether.impl.RemoteRepositoryManager; +import org.eclipse.aether.impl.VersionRangeResolver; +import org.eclipse.aether.internal.impl.collect.CachingArtifactTypeRegistry; +import org.eclipse.aether.internal.impl.collect.DataPool; +import org.eclipse.aether.internal.impl.collect.DefaultDependencyCollectionContext; +import org.eclipse.aether.internal.impl.collect.DefaultDependencyCycle; +import org.eclipse.aether.internal.impl.collect.DefaultDependencyGraphTransformationContext; +import org.eclipse.aether.internal.impl.collect.DefaultVersionFilterContext; +import org.eclipse.aether.internal.impl.collect.DependencyCollectorDelegate; +import org.eclipse.aether.repository.ArtifactRepository; +import org.eclipse.aether.repository.RemoteRepository; +import org.eclipse.aether.resolution.ArtifactDescriptorException; +import org.eclipse.aether.resolution.ArtifactDescriptorRequest; +import org.eclipse.aether.resolution.ArtifactDescriptorResult; +import org.eclipse.aether.resolution.VersionRangeRequest; +import org.eclipse.aether.resolution.VersionRangeResolutionException; +import org.eclipse.aether.resolution.VersionRangeResult; +import org.eclipse.aether.spi.locator.Service; +import org.eclipse.aether.util.ConfigUtils; +import org.eclipse.aether.util.graph.manager.DependencyManagerUtils; +import org.eclipse.aether.util.graph.transformer.TransformationContextKeys; +import org.eclipse.aether.version.Version; + +/** + * Depth-first {@link org.eclipse.aether.impl.DependencyCollector} (the "original" default). Originally + * this class was located a package higher (as "default" implementation). + * + * @since 1.8.0 + */ +@Singleton +@Named( DfDependencyCollector.NAME ) +public class DfDependencyCollector + extends DependencyCollectorDelegate implements Service +{ + public static final String NAME = "df"; + + public DfDependencyCollector() + { + // enables default constructor + } + + @Inject + DfDependencyCollector( RemoteRepositoryManager remoteRepositoryManager, + ArtifactDescriptorReader artifactDescriptorReader, + VersionRangeResolver versionRangeResolver ) + { + super( remoteRepositoryManager, artifactDescriptorReader, versionRangeResolver ); + } + + @SuppressWarnings( "checkstyle:methodlength" ) + public CollectResult collectDependencies( RepositorySystemSession session, CollectRequest request ) + throws DependencyCollectionException + { + requireNonNull( session, "session cannot be null" ); + requireNonNull( request, "request cannot be null" ); + session = optimizeSession( session ); + + RequestTrace trace = RequestTrace.newChild( request.getTrace(), request ); + + CollectResult result = new CollectResult( request ); + + DependencySelector depSelector = session.getDependencySelector(); + DependencyManager depManager = session.getDependencyManager(); + DependencyTraverser depTraverser = session.getDependencyTraverser(); + VersionFilter verFilter = session.getVersionFilter(); + + Dependency root = request.getRoot(); + List<RemoteRepository> repositories = request.getRepositories(); + List<Dependency> dependencies = request.getDependencies(); + List<Dependency> managedDependencies = request.getManagedDependencies(); + + Map<String, Object> stats = new LinkedHashMap<>(); + long time1 = System.nanoTime(); + + DefaultDependencyNode node; + if ( root != null ) + { + List<? extends Version> versions; + VersionRangeResult rangeResult; + try + { + VersionRangeRequest rangeRequest = + new VersionRangeRequest( root.getArtifact(), request.getRepositories(), + request.getRequestContext() ); + rangeRequest.setTrace( trace ); + rangeResult = versionRangeResolver.resolveVersionRange( session, rangeRequest ); + versions = filterVersions( root, rangeResult, verFilter, new DefaultVersionFilterContext( session ) ); + } + catch ( VersionRangeResolutionException e ) + { + result.addException( e ); + throw new DependencyCollectionException( result, e.getMessage() ); + } + + Version version = versions.get( versions.size() - 1 ); + root = root.setArtifact( root.getArtifact().setVersion( version.toString() ) ); + + ArtifactDescriptorResult descriptorResult; + try + { + ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest(); + descriptorRequest.setArtifact( root.getArtifact() ); + descriptorRequest.setRepositories( request.getRepositories() ); + descriptorRequest.setRequestContext( request.getRequestContext() ); + descriptorRequest.setTrace( trace ); + if ( isLackingDescriptor( root.getArtifact() ) ) + { + descriptorResult = new ArtifactDescriptorResult( descriptorRequest ); + } + else + { + descriptorResult = descriptorReader.readArtifactDescriptor( session, descriptorRequest ); + } + } + catch ( ArtifactDescriptorException e ) + { + result.addException( e ); + throw new DependencyCollectionException( result, e.getMessage() ); + } + + root = root.setArtifact( descriptorResult.getArtifact() ); + + if ( !session.isIgnoreArtifactDescriptorRepositories() ) + { + repositories = remoteRepositoryManager.aggregateRepositories( session, repositories, + descriptorResult.getRepositories(), + true ); + } + dependencies = mergeDeps( dependencies, descriptorResult.getDependencies() ); + managedDependencies = mergeDeps( managedDependencies, descriptorResult.getManagedDependencies() ); + + node = new DefaultDependencyNode( root ); + node.setRequestContext( request.getRequestContext() ); + node.setRelocations( descriptorResult.getRelocations() ); + node.setVersionConstraint( rangeResult.getVersionConstraint() ); + node.setVersion( version ); + node.setAliases( descriptorResult.getAliases() ); + node.setRepositories( request.getRepositories() ); + } + else + { + node = new DefaultDependencyNode( request.getRootArtifact() ); + node.setRequestContext( request.getRequestContext() ); + node.setRepositories( request.getRepositories() ); + } + + result.setRoot( node ); + + boolean traverse = root == null || depTraverser == null || depTraverser.traverseDependency( root ); + String errorPath = null; + if ( traverse && !dependencies.isEmpty() ) + { + DataPool pool = new DataPool( session ); + + NodeStack nodes = new NodeStack(); + nodes.push( node ); + + DefaultDependencyCollectionContext context = + new DefaultDependencyCollectionContext( session, request.getRootArtifact(), root, managedDependencies ); + + DefaultVersionFilterContext versionContext = new DefaultVersionFilterContext( session ); + + Args args = new Args( session, trace, pool, nodes, context, versionContext, request ); + Results results = new Results( result, session ); + + process( args, results, dependencies, repositories, + depSelector != null ? depSelector.deriveChildSelector( context ) : null, + depManager != null ? depManager.deriveChildManager( context ) : null, + depTraverser != null ? depTraverser.deriveChildTraverser( context ) : null, + verFilter != null ? verFilter.deriveChildFilter( context ) : null ); + + errorPath = results.errorPath; + } + + long time2 = System.nanoTime(); + + DependencyGraphTransformer transformer = session.getDependencyGraphTransformer(); + if ( transformer != null ) + { + try + { + DefaultDependencyGraphTransformationContext context = + new DefaultDependencyGraphTransformationContext( session ); + context.put( TransformationContextKeys.STATS, stats ); + result.setRoot( transformer.transformGraph( node, context ) ); + } + catch ( RepositoryException e ) + { + result.addException( e ); + } + } + + long time3 = System.nanoTime(); + stats.put( "DefaultDependencyCollector.collectTime", time2 - time1 ); + stats.put( "DefaultDependencyCollector.transformTime", time3 - time2 ); + logger.debug( "Dependency collection stats {}", stats ); Review Comment: Same here: this map is sent for a trip around the world (conflict sorter, conflict marker, conflict resolver), and THEN is populated with these two keys and logged. And everything logs in nanos. I am leaving this as is, will put it into `if log.isDebugEnabled` instead for now, but reworking all these to not log in nanos but in ms is IMHO out of the scope of this PR. Also, this is very very technical log output, so I'd not bother making it readable or whatnot. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@maven.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
