Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.eclipse.aether.internal.impl.collect.bf;
020
021import javax.inject.Inject;
022import javax.inject.Named;
023import javax.inject.Singleton;
024
025import java.io.Closeable;
026import java.util.ArrayDeque;
027import java.util.ArrayList;
028import java.util.Arrays;
029import java.util.Collections;
030import java.util.LinkedHashMap;
031import java.util.List;
032import java.util.Map;
033import java.util.Optional;
034import java.util.Queue;
035import java.util.Set;
036import java.util.concurrent.Callable;
037import java.util.concurrent.CompletableFuture;
038import java.util.concurrent.ConcurrentHashMap;
039import java.util.concurrent.Future;
040import java.util.concurrent.atomic.AtomicReference;
041import java.util.function.Supplier;
042import java.util.stream.Collectors;
043import java.util.stream.Stream;
044
045import org.eclipse.aether.RepositorySystemSession;
046import org.eclipse.aether.RequestTrace;
047import org.eclipse.aether.artifact.Artifact;
048import org.eclipse.aether.collection.CollectRequest;
049import org.eclipse.aether.collection.DependencyCollectionException;
050import org.eclipse.aether.collection.DependencyManager;
051import org.eclipse.aether.collection.DependencySelector;
052import org.eclipse.aether.collection.DependencyTraverser;
053import org.eclipse.aether.collection.VersionFilter;
054import org.eclipse.aether.graph.DefaultDependencyNode;
055import org.eclipse.aether.graph.Dependency;
056import org.eclipse.aether.graph.DependencyNode;
057import org.eclipse.aether.impl.ArtifactDescriptorReader;
058import org.eclipse.aether.impl.RemoteRepositoryManager;
059import org.eclipse.aether.impl.VersionRangeResolver;
060import org.eclipse.aether.internal.impl.collect.DataPool;
061import org.eclipse.aether.internal.impl.collect.DefaultDependencyCollectionContext;
062import org.eclipse.aether.internal.impl.collect.DefaultDependencyCollector;
063import org.eclipse.aether.internal.impl.collect.DefaultVersionFilterContext;
064import org.eclipse.aether.internal.impl.collect.DependencyCollectorDelegate;
065import org.eclipse.aether.internal.impl.collect.PremanagedDependency;
066import org.eclipse.aether.repository.RemoteRepository;
067import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
068import org.eclipse.aether.resolution.ArtifactDescriptorResult;
069import org.eclipse.aether.resolution.VersionRangeRequest;
070import org.eclipse.aether.resolution.VersionRangeResult;
071import org.eclipse.aether.spi.artifact.decorator.ArtifactDecoratorFactory;
072import org.eclipse.aether.util.ConfigUtils;
073import org.eclipse.aether.util.artifact.ArtifactIdUtils;
074import org.eclipse.aether.util.concurrency.SmartExecutor;
075import org.eclipse.aether.util.concurrency.SmartExecutorUtils;
076import org.eclipse.aether.util.graph.manager.DependencyManagerUtils;
077import org.eclipse.aether.version.Version;
078
079import static org.eclipse.aether.internal.impl.collect.DefaultDependencyCycle.find;
080
081/**
082 * Breadth-first {@link org.eclipse.aether.impl.DependencyCollector}
083 *
084 * @since 1.8.0
085 */
086@Singleton
087@Named(BfDependencyCollector.NAME)
088public class BfDependencyCollector extends DependencyCollectorDelegate {
089    public static final String NAME = "bf";
090
091    private static final String CONFIG_PROPS_PREFIX = DefaultDependencyCollector.CONFIG_PROPS_PREFIX + NAME + ".";
092
093    /**
094     * The key in the repository session's {@link RepositorySystemSession#getConfigProperties()
095     * configuration properties} used to store a {@link String} flag controlling the resolver's skip mode.
096     * Supported modes are "versionless" (default), "versioned" and "false" to not use skipper. The first two modes
097     * are defining "function" how to map artifact coordinates to (String) key while deciding "skip" logic.
098     * The "versionless" uses {@code G:A:C:E} coordinate elements only (without version), while "versioned" uses
099     * all {@code G:A:C:E:V} artifact coordinates.
100     *
101     * @since 1.8.0
102     * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
103     * @configurationType {@link java.lang.String}
104     * @configurationDefaultValue {@link #DEFAULT_SKIPPER}
105     */
106    public static final String CONFIG_PROP_SKIPPER = CONFIG_PROPS_PREFIX + "skipper";
107
108    public static final String NONE_SKIPPER = "false";
109    public static final String VERSIONLESS_SKIPPER = "versionless";
110    public static final String VERSIONED_SKIPPER = "versioned";
111
112    /**
113     * The default value for {@link #CONFIG_PROP_SKIPPER}, {@code true}.
114     *
115     * @since 1.8.0
116     */
117    public static final String DEFAULT_SKIPPER = VERSIONLESS_SKIPPER;
118
119    /**
120     * The count of threads to be used when collecting POMs in parallel.
121     *
122     * @since 1.9.0
123     * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
124     * @configurationType {@link java.lang.Integer}
125     * @configurationDefaultValue {@link #DEFAULT_THREADS}
126     */
127    public static final String CONFIG_PROP_THREADS = CONFIG_PROPS_PREFIX + "threads";
128
129    /**
130     * The default value for {@link #CONFIG_PROP_THREADS}, default value 5.
131     *
132     * @since 1.9.0
133     */
134    public static final int DEFAULT_THREADS = 5;
135
136    @Inject
137    public BfDependencyCollector(
138            RemoteRepositoryManager remoteRepositoryManager,
139            ArtifactDescriptorReader artifactDescriptorReader,
140            VersionRangeResolver versionRangeResolver,
141            Map<String, ArtifactDecoratorFactory> artifactDecoratorFactories) {
142        super(remoteRepositoryManager, artifactDescriptorReader, versionRangeResolver, artifactDecoratorFactories);
143    }
144
145    @SuppressWarnings("checkstyle:parameternumber")
146    @Override
147    protected void doCollectDependencies(
148            RepositorySystemSession session,
149            RequestTrace trace,
150            DataPool pool,
151            DefaultDependencyCollectionContext context,
152            DefaultVersionFilterContext versionContext,
153            CollectRequest request,
154            DependencyNode node,
155            List<RemoteRepository> repositories,
156            List<Dependency> dependencies,
157            List<Dependency> managedDependencies,
158            Results results)
159            throws DependencyCollectionException {
160        String skipperMode = ConfigUtils.getString(session, DEFAULT_SKIPPER, CONFIG_PROP_SKIPPER);
161        Supplier<DependencyResolutionSkipper> skipperSupplier;
162        if (NONE_SKIPPER.equals(skipperMode)) {
163            logger.debug("Collector skip mode disabled");
164            skipperSupplier = DependencyResolutionSkipper::neverSkipper;
165        } else if (VERSIONLESS_SKIPPER.equals(skipperMode)) {
166            logger.debug("Collector skip mode enabled: {} (key function GACE)", skipperMode);
167            skipperSupplier = DependencyResolutionSkipper::defaultGACESkipper;
168        } else if (VERSIONED_SKIPPER.equals(skipperMode)) {
169            logger.debug("Collector skip mode enabled: {} (key function GACEV)", skipperMode);
170            skipperSupplier = DependencyResolutionSkipper::defaultGACEVSkipper;
171        } else {
172            throw new IllegalArgumentException("Unknown skipper mode: " + skipperMode + "; known are "
173                    + Arrays.asList(VERSIONLESS_SKIPPER, VERSIONED_SKIPPER, NONE_SKIPPER));
174        }
175
176        try (DependencyResolutionSkipper skipper = skipperSupplier.get();
177                ParallelDescriptorResolver parallelDescriptorResolver =
178                        new ParallelDescriptorResolver(SmartExecutorUtils.smartExecutor(
179                                session,
180                                null, // we don't know ahead of time; we want global executor
181                                ConfigUtils.getInteger(session, DEFAULT_THREADS, CONFIG_PROP_THREADS),
182                                getClass().getSimpleName() + "-"))) {
183            Args args = new Args(session, pool, context, versionContext, request, skipper, parallelDescriptorResolver);
184
185            DependencySelector rootDepSelector = session.getDependencySelector() != null
186                    ? session.getDependencySelector().deriveChildSelector(context)
187                    : null;
188            DependencyManager rootDepManager = session.getDependencyManager() != null
189                    ? session.getDependencyManager().deriveChildManager(context)
190                    : null;
191            DependencyTraverser rootDepTraverser = session.getDependencyTraverser() != null
192                    ? session.getDependencyTraverser().deriveChildTraverser(context)
193                    : null;
194            VersionFilter rootVerFilter = session.getVersionFilter() != null
195                    ? session.getVersionFilter().deriveChildFilter(context)
196                    : null;
197
198            List<DependencyNode> parents = Collections.singletonList(node);
199            for (Dependency dependency : dependencies) {
200                RequestTrace childTrace =
201                        collectStepTrace(trace, args.request.getRequestContext(), parents, dependency);
202                DependencyProcessingContext processingContext = new DependencyProcessingContext(
203                        rootDepSelector,
204                        rootDepManager,
205                        rootDepTraverser,
206                        rootVerFilter,
207                        childTrace,
208                        repositories,
209                        managedDependencies,
210                        parents,
211                        dependency,
212                        PremanagedDependency.create(rootDepManager, dependency, false, args.premanagedState));
213                if (!filter(processingContext)) {
214                    processingContext.withDependency(processingContext.premanagedDependency.getManagedDependency());
215                    resolveArtifactDescriptorAsync(args, processingContext, results);
216                    args.dependencyProcessingQueue.add(processingContext);
217                }
218            }
219
220            while (!args.dependencyProcessingQueue.isEmpty()) {
221                processDependency(
222                        args, results, args.dependencyProcessingQueue.remove(), Collections.emptyList(), false);
223            }
224
225            if (args.interruptedException.get() != null) {
226                throw new DependencyCollectionException(
227                        results.getResult(), "Collection interrupted", args.interruptedException.get());
228            }
229        }
230    }
231
232    @SuppressWarnings("checkstyle:parameternumber")
233    private void processDependency(
234            Args args,
235            Results results,
236            DependencyProcessingContext context,
237            List<Artifact> relocations,
238            boolean disableVersionManagement) {
239        if (Thread.interrupted()) {
240            args.interruptedException.set(new InterruptedException());
241        }
242        if (args.interruptedException.get() != null) {
243            return;
244        }
245        Dependency dependency = context.dependency;
246        PremanagedDependency preManaged = context.premanagedDependency;
247
248        boolean noDescriptor = isLackingDescriptor(args.session, dependency.getArtifact());
249        boolean traverse =
250                !noDescriptor && (context.depTraverser == null || context.depTraverser.traverseDependency(dependency));
251
252        Future<DescriptorResolutionResult> resolutionResultFuture = args.resolver.find(dependency.getArtifact());
253        DescriptorResolutionResult resolutionResult;
254        VersionRangeResult rangeResult;
255        try {
256            resolutionResult = resolutionResultFuture.get();
257            rangeResult = resolutionResult.rangeResult;
258        } catch (Exception e) {
259            results.addException(dependency, e, context.parents);
260            return;
261        }
262
263        Set<Version> versions = resolutionResult.descriptors.keySet();
264        for (Version version : versions) {
265            Artifact originalArtifact = dependency.getArtifact().setVersion(version.toString());
266            Dependency d = dependency.setArtifact(originalArtifact);
267
268            final ArtifactDescriptorResult descriptorResult = resolutionResult.descriptors.get(version);
269            if (descriptorResult != null) {
270                d = d.setArtifact(descriptorResult.getArtifact());
271
272                int cycleEntry = find(context.parents, d.getArtifact());
273                if (cycleEntry >= 0) {
274                    results.addCycle(context.parents, cycleEntry, d);
275                    DependencyNode cycleNode = context.parents.get(cycleEntry);
276                    if (cycleNode.getDependency() != null) {
277                        DefaultDependencyNode child = createDependencyNode(
278                                relocations, preManaged, rangeResult, version, d, descriptorResult, cycleNode);
279                        context.getParent().getChildren().add(child);
280                        continue;
281                    }
282                }
283
284                if (!descriptorResult.getRelocations().isEmpty()) {
285                    boolean disableVersionManagementSubsequently =
286                            originalArtifact.getGroupId().equals(d.getArtifact().getGroupId())
287                                    && originalArtifact
288                                            .getArtifactId()
289                                            .equals(d.getArtifact().getArtifactId());
290
291                    PremanagedDependency premanagedDependency = PremanagedDependency.create(
292                            context.depManager, d, disableVersionManagementSubsequently, args.premanagedState);
293                    DependencyProcessingContext relocatedContext = new DependencyProcessingContext(
294                            context.depSelector,
295                            context.depManager,
296                            context.depTraverser,
297                            context.verFilter,
298                            context.trace,
299                            context.repositories,
300                            descriptorResult.getManagedDependencies(),
301                            context.parents,
302                            d,
303                            premanagedDependency);
304
305                    if (!filter(relocatedContext)) {
306                        relocatedContext.withDependency(premanagedDependency.getManagedDependency());
307                        resolveArtifactDescriptorAsync(args, relocatedContext, results);
308                        processDependency(
309                                args,
310                                results,
311                                relocatedContext,
312                                descriptorResult.getRelocations(),
313                                disableVersionManagementSubsequently);
314                    }
315
316                    return;
317                } else {
318                    d = args.pool.intern(d.setArtifact(args.pool.intern(d.getArtifact())));
319
320                    List<RemoteRepository> repos =
321                            getRemoteRepositories(rangeResult.getRepository(version), context.repositories);
322
323                    DefaultDependencyNode child = createDependencyNode(
324                            relocations,
325                            preManaged,
326                            rangeResult,
327                            version,
328                            d,
329                            descriptorResult.getAliases(),
330                            repos,
331                            args.request.getRequestContext());
332
333                    context.getParent().getChildren().add(child);
334
335                    boolean recurse =
336                            traverse && !descriptorResult.getDependencies().isEmpty();
337                    DependencyProcessingContext parentContext = context.withDependency(d);
338                    if (recurse) {
339                        doRecurse(args, parentContext, descriptorResult, child, results, disableVersionManagement);
340                    } else if (!args.skipper.skipResolution(child, parentContext.parents)) {
341                        List<DependencyNode> parents = new ArrayList<>(parentContext.parents.size() + 1);
342                        parents.addAll(parentContext.parents);
343                        parents.add(child);
344                        args.skipper.cache(child, parents);
345                    }
346                }
347            } else {
348                List<RemoteRepository> repos =
349                        getRemoteRepositories(rangeResult.getRepository(version), context.repositories);
350                DefaultDependencyNode child = createDependencyNode(
351                        relocations,
352                        preManaged,
353                        rangeResult,
354                        version,
355                        d,
356                        null,
357                        repos,
358                        args.request.getRequestContext());
359                context.getParent().getChildren().add(child);
360            }
361        }
362    }
363
364    @SuppressWarnings("checkstyle:parameternumber")
365    private void doRecurse(
366            Args args,
367            DependencyProcessingContext parentContext,
368            ArtifactDescriptorResult descriptorResult,
369            DefaultDependencyNode child,
370            Results results,
371            boolean disableVersionManagement) {
372        DefaultDependencyCollectionContext context = args.collectionContext.get();
373        args.collectionContext.compareAndSet(
374                context, context.set(parentContext.dependency, descriptorResult.getManagedDependencies()));
375        context = args.collectionContext.get();
376
377        DependencySelector childSelector =
378                parentContext.depSelector != null ? parentContext.depSelector.deriveChildSelector(context) : null;
379        DependencyManager childManager =
380                parentContext.depManager != null ? parentContext.depManager.deriveChildManager(context) : null;
381        DependencyTraverser childTraverser =
382                parentContext.depTraverser != null ? parentContext.depTraverser.deriveChildTraverser(context) : null;
383        VersionFilter childFilter =
384                parentContext.verFilter != null ? parentContext.verFilter.deriveChildFilter(context) : null;
385
386        final List<RemoteRepository> childRepos = args.ignoreRepos
387                ? parentContext.repositories
388                : remoteRepositoryManager.aggregateRepositories(
389                        args.session, parentContext.repositories, descriptorResult.getRepositories(), true);
390
391        Object key = args.pool.toKey(
392                parentContext.dependency.getArtifact(),
393                childRepos,
394                childSelector,
395                childManager,
396                childTraverser,
397                childFilter);
398
399        List<DependencyNode> children = args.pool.getChildren(key);
400        if (children == null) {
401            boolean skipResolution = args.skipper.skipResolution(child, parentContext.parents);
402            if (!skipResolution) {
403                List<DependencyNode> parents = new ArrayList<>(parentContext.parents.size() + 1);
404                parents.addAll(parentContext.parents);
405                parents.add(child);
406                for (Dependency dependency : descriptorResult.getDependencies()) {
407                    RequestTrace childTrace = collectStepTrace(
408                            parentContext.trace, args.request.getRequestContext(), parents, dependency);
409                    PremanagedDependency premanagedDependency = PremanagedDependency.create(
410                            childManager, dependency, disableVersionManagement, args.premanagedState);
411                    DependencyProcessingContext processingContext = new DependencyProcessingContext(
412                            childSelector,
413                            childManager,
414                            childTraverser,
415                            childFilter,
416                            childTrace,
417                            childRepos,
418                            descriptorResult.getManagedDependencies(),
419                            parents,
420                            dependency,
421                            premanagedDependency);
422                    if (!filter(processingContext)) {
423                        // resolve descriptors ahead for managed dependency
424                        processingContext.withDependency(processingContext.premanagedDependency.getManagedDependency());
425                        resolveArtifactDescriptorAsync(args, processingContext, results);
426                        args.dependencyProcessingQueue.add(processingContext);
427                    }
428                }
429                args.pool.putChildren(key, child.getChildren());
430                args.skipper.cache(child, parents);
431            }
432        } else {
433            child.setChildren(children);
434        }
435    }
436
437    private boolean filter(DependencyProcessingContext context) {
438        return context.depSelector != null && !context.depSelector.selectDependency(context.dependency);
439    }
440
441    private void resolveArtifactDescriptorAsync(Args args, DependencyProcessingContext context, Results results) {
442        Dependency dependency = context.dependency;
443        args.resolver.resolveDescriptors(dependency.getArtifact(), () -> {
444            VersionRangeRequest rangeRequest = createVersionRangeRequest(
445                    args.request.getRequestContext(), context.trace, context.repositories, dependency);
446            VersionRangeResult rangeResult = cachedResolveRangeResult(rangeRequest, args.pool, args.session);
447            List<? extends Version> versions =
448                    filterVersions(dependency, rangeResult, context.verFilter, args.versionContext);
449
450            // resolve newer version first to maximize benefits of skipper
451            Collections.reverse(versions);
452
453            Map<Version, ArtifactDescriptorResult> descriptors = new ConcurrentHashMap<>(versions.size());
454            Stream<? extends Version> stream = versions.size() > 1 ? versions.parallelStream() : versions.stream();
455            stream.forEach(version -> Optional.ofNullable(
456                            resolveDescriptorForVersion(args, context, results, dependency, version))
457                    .ifPresent(r -> descriptors.put(version, r)));
458
459            DescriptorResolutionResult resolutionResult =
460                    new DescriptorResolutionResult(dependency.getArtifact(), rangeResult);
461            // keep original sequence
462            versions.forEach(version -> resolutionResult.descriptors.put(version, descriptors.get(version)));
463            // populate for versions in version range
464            resolutionResult.flatten().forEach(dr -> args.resolver.cacheVersionRangeDescriptor(dr.artifact, dr));
465
466            return resolutionResult;
467        });
468    }
469
470    private ArtifactDescriptorResult resolveDescriptorForVersion(
471            Args args, DependencyProcessingContext context, Results results, Dependency dependency, Version version) {
472        Artifact original = dependency.getArtifact();
473        Artifact newArtifact = original.setVersion(version.toString());
474        Dependency newDependency =
475                new Dependency(newArtifact, dependency.getScope(), dependency.isOptional(), dependency.getExclusions());
476        DependencyProcessingContext newContext = context.copy();
477
478        ArtifactDescriptorRequest descriptorRequest = createArtifactDescriptorRequest(
479                args.request.getRequestContext(), context.trace, newContext.repositories, newDependency);
480        return isLackingDescriptor(args.session, newArtifact)
481                ? new ArtifactDescriptorResult(descriptorRequest)
482                : resolveCachedArtifactDescriptor(
483                        args.pool,
484                        descriptorRequest,
485                        args.session,
486                        newContext.withDependency(newDependency).dependency,
487                        results,
488                        context.parents);
489    }
490
491    static class ParallelDescriptorResolver implements Closeable {
492        private final SmartExecutor smartExecutor;
493
494        /**
495         * Artifact ID -> Future of DescriptorResolutionResult
496         */
497        private final Map<String, Future<DescriptorResolutionResult>> results = new ConcurrentHashMap<>(256);
498
499        ParallelDescriptorResolver(SmartExecutor smartExecutor) {
500            this.smartExecutor = smartExecutor;
501        }
502
503        void resolveDescriptors(Artifact artifact, Callable<DescriptorResolutionResult> callable) {
504            results.computeIfAbsent(ArtifactIdUtils.toId(artifact), key -> smartExecutor.submit(callable));
505        }
506
507        void cacheVersionRangeDescriptor(Artifact artifact, DescriptorResolutionResult resolutionResult) {
508            results.computeIfAbsent(
509                    ArtifactIdUtils.toId(artifact), key -> CompletableFuture.completedFuture(resolutionResult));
510        }
511
512        Future<DescriptorResolutionResult> find(Artifact artifact) {
513            return results.get(ArtifactIdUtils.toId(artifact));
514        }
515
516        @Override
517        public void close() {
518            smartExecutor.close();
519        }
520    }
521
522    static class DescriptorResolutionResult {
523        Artifact artifact;
524
525        VersionRangeResult rangeResult;
526
527        Map<Version, ArtifactDescriptorResult> descriptors;
528
529        DescriptorResolutionResult(Artifact artifact, VersionRangeResult rangeResult) {
530            this.artifact = artifact;
531            this.rangeResult = rangeResult;
532            this.descriptors = new LinkedHashMap<>(rangeResult.getVersions().size());
533        }
534
535        DescriptorResolutionResult(
536                VersionRangeResult rangeResult, Version version, ArtifactDescriptorResult descriptor) {
537            // NOTE: In case of A1 -> A2 relocation this happens:
538            // ArtifactDescriptorResult read by ArtifactDescriptorResultReader for A1
539            // will return instance that will have artifact = A2 (as RelocatedArtifact).
540            // So to properly "key" this instance, we need to use "originally requested" A1 instead!
541            // In short:
542            // ArtifactDescriptorRequest.artifact != ArtifactDescriptorResult.artifact WHEN relocation in play
543            // otherwise (no relocation), they are EQUAL.
544            this(descriptor.getRequest().getArtifact(), rangeResult);
545            this.descriptors.put(version, descriptor);
546        }
547
548        List<DescriptorResolutionResult> flatten() {
549            if (descriptors.size() > 1) {
550                return descriptors.entrySet().stream()
551                        .map(e -> new DescriptorResolutionResult(rangeResult, e.getKey(), e.getValue()))
552                        .collect(Collectors.toList());
553            } else {
554                return Collections.emptyList();
555            }
556        }
557    }
558
559    static class Args {
560
561        final RepositorySystemSession session;
562
563        final boolean ignoreRepos;
564
565        final boolean premanagedState;
566
567        final DataPool pool;
568
569        final Queue<DependencyProcessingContext> dependencyProcessingQueue = new ArrayDeque<>(128);
570
571        final AtomicReference<DefaultDependencyCollectionContext> collectionContext;
572
573        final DefaultVersionFilterContext versionContext;
574
575        final CollectRequest request;
576
577        final DependencyResolutionSkipper skipper;
578
579        final ParallelDescriptorResolver resolver;
580
581        final AtomicReference<InterruptedException> interruptedException;
582
583        Args(
584                RepositorySystemSession session,
585                DataPool pool,
586                DefaultDependencyCollectionContext collectionContext,
587                DefaultVersionFilterContext versionContext,
588                CollectRequest request,
589                DependencyResolutionSkipper skipper,
590                ParallelDescriptorResolver resolver) {
591            this.session = session;
592            this.request = request;
593            this.ignoreRepos = session.isIgnoreArtifactDescriptorRepositories();
594            this.premanagedState = ConfigUtils.getBoolean(session, false, DependencyManagerUtils.CONFIG_PROP_VERBOSE);
595            this.pool = pool;
596            this.collectionContext = new AtomicReference<>(collectionContext);
597            this.versionContext = versionContext;
598            this.skipper = skipper;
599            this.resolver = resolver;
600            this.interruptedException = new AtomicReference<>(null);
601        }
602    }
603}