/
MavenSessionBuilderSupplier.java
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/
MavenSessionBuilderSupplier.java
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/*
* 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.apache.maven.internal.impl.resolver;
import java.util.Arrays;
import java.util.function.Supplier;
import org.apache.maven.api.DependencyScope;
import org.apache.maven.internal.impl.resolver.artifact.FatArtifactTraverser;
import org.apache.maven.internal.impl.resolver.scopes.Maven4ScopeManagerConfiguration;
import org.apache.maven.internal.impl.resolver.type.DefaultTypeProvider;
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RepositorySystemSession.CloseableSession;
import org.eclipse.aether.RepositorySystemSession.SessionBuilder;
import org.eclipse.aether.artifact.ArtifactTypeRegistry;
import org.eclipse.aether.collection.DependencyGraphTransformer;
import org.eclipse.aether.collection.DependencyManager;
import org.eclipse.aether.collection.DependencySelector;
import org.eclipse.aether.collection.DependencyTraverser;
import org.eclipse.aether.impl.scope.InternalScopeManager;
import org.eclipse.aether.internal.impl.scope.ManagedDependencyContextRefiner;
import org.eclipse.aether.internal.impl.scope.ManagedScopeDeriver;
import org.eclipse.aether.internal.impl.scope.ManagedScopeSelector;
import org.eclipse.aether.internal.impl.scope.OptionalDependencySelector;
import org.eclipse.aether.internal.impl.scope.ScopeDependencySelector;
import org.eclipse.aether.internal.impl.scope.ScopeManagerImpl;
import org.eclipse.aether.resolution.ArtifactDescriptorPolicy;
import org.eclipse.aether.util.artifact.DefaultArtifactTypeRegistry;
import org.eclipse.aether.util.graph.manager.ClassicDependencyManager;
import org.eclipse.aether.util.graph.selector.AndDependencySelector;
import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
import org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
import org.eclipse.aether.util.graph.transformer.ConflictResolver;
import org.eclipse.aether.util.graph.transformer.NearestVersionSelector;
import org.eclipse.aether.util.graph.transformer.SimpleOptionalitySelector;
import org.eclipse.aether.util.repository.SimpleArtifactDescriptorPolicy;
import static java.util.Objects.requireNonNull;
/**
* A simple {@link Supplier} of {@link SessionBuilder} instances, that on each call supplies newly
* constructed instance. To create session out of builder, use {@link SessionBuilder#build()}. For proper closing
* of sessions, use {@link CloseableSession#close()} method on built instance(s).
* <p>
* Extend this class and override methods to customize, if needed.
*
* @since 4.0.0
*/
public class MavenSessionBuilderSupplier implements Supplier<SessionBuilder> {
protected final RepositorySystem repositorySystem;
protected final InternalScopeManager scopeManager;
public MavenSessionBuilderSupplier(RepositorySystem repositorySystem) {
this.repositorySystem = requireNonNull(repositorySystem);
this.scopeManager = new ScopeManagerImpl(Maven4ScopeManagerConfiguration.INSTANCE);
}
protected DependencyTraverser getDependencyTraverser() {
return new FatArtifactTraverser();
}
protected InternalScopeManager getScopeManager() {
return scopeManager;
}
protected DependencyManager getDependencyManager() {
return getDependencyManager(true); // same default as in Maven4
}
public DependencyManager getDependencyManager(boolean transitive) {
return new ClassicDependencyManager(transitive, getScopeManager());
}
protected DependencySelector getDependencySelector() {
return new AndDependencySelector(
ScopeDependencySelector.legacy(
null, Arrays.asList(DependencyScope.TEST.id(), DependencyScope.PROVIDED.id())),
OptionalDependencySelector.fromDirect(),
new ExclusionDependencySelector());
}
protected DependencyGraphTransformer getDependencyGraphTransformer() {
return new ChainedDependencyGraphTransformer(
new ConflictResolver(
new NearestVersionSelector(), new ManagedScopeSelector(getScopeManager()),
new SimpleOptionalitySelector(), new ManagedScopeDeriver(getScopeManager())),
new ManagedDependencyContextRefiner(getScopeManager()));
}
/**
* This method produces "surrogate" type registry that is static: it aims users that want to use
* Maven-Resolver without involving Maven Core and related things.
* <p>
* This type registry is NOT used by Maven Core: Maven replaces it during Session creation with a type registry
* that supports extending it (i.e. via Maven Extensions).
* <p>
* Important: this "static" list of types should be in-sync with core provided types.
*/
protected ArtifactTypeRegistry getArtifactTypeRegistry() {
DefaultArtifactTypeRegistry stereotypes = new DefaultArtifactTypeRegistry();
new DefaultTypeProvider().types().forEach(stereotypes::add);
return stereotypes;
}
protected ArtifactDescriptorPolicy getArtifactDescriptorPolicy() {
return new SimpleArtifactDescriptorPolicy(true, true);
}
protected void configureSessionBuilder(SessionBuilder session) {
session.setDependencyTraverser(getDependencyTraverser());
session.setDependencyManager(getDependencyManager());
session.setDependencySelector(getDependencySelector());
session.setDependencyGraphTransformer(getDependencyGraphTransformer());
session.setArtifactTypeRegistry(getArtifactTypeRegistry());
session.setArtifactDescriptorPolicy(getArtifactDescriptorPolicy());
session.setScopeManager(getScopeManager());
}
/**
* Creates a new Maven-like repository system session by initializing the session with values typical for
* Maven-based resolution. In more detail, this method configures settings relevant for the processing of dependency
* graphs, most other settings remain at their generic default value. Use the various setters to further configure
* the session with authentication, mirror, proxy and other information required for your environment. At least,
* local repository manager needs to be configured to make session be able to create session instance.
*
* @return SessionBuilder configured with minimally required things for "Maven-based resolution". At least LRM must
* be set on builder to make it able to create session instances.
*/
@Override
public SessionBuilder get() {
requireNonNull(repositorySystem, "repositorySystem");
SessionBuilder builder = repositorySystem.createSessionBuilder();
configureSessionBuilder(builder);
return builder;
}
}