org.eclipse.aether.ant.AntModelResolver.java Source code

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Here is the source code for org.eclipse.aether.ant.AntModelResolver.java

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/*******************************************************************************
 * Copyright (c) 2010, 2012 Sonatype, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Sonatype, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.aether.ant;

import java.io.File;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.apache.maven.model.Repository;
import org.apache.maven.model.building.FileModelSource;
import org.apache.maven.model.building.ModelSource;
import org.apache.maven.model.resolution.InvalidRepositoryException;
import org.apache.maven.model.resolution.ModelResolver;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.DefaultArtifact;
import org.eclipse.aether.impl.RemoteRepositoryManager;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.RepositoryPolicy;
import org.eclipse.aether.resolution.ArtifactRequest;
import org.eclipse.aether.resolution.ArtifactResolutionException;

/**
 * A model resolver to assist building of dependency POMs. This resolver gives priority to those repositories that have
 * been initially specified and repositories discovered in dependency POMs are recessively merged into the search chain.
 * 
 */
class AntModelResolver implements ModelResolver {

    private final RepositorySystemSession session;

    private final String context;

    private List<org.eclipse.aether.repository.RemoteRepository> repositories;

    private final RepositorySystem repoSys;

    private final RemoteRepositoryManager remoteRepositoryManager;

    private final Set<String> repositoryIds;

    public AntModelResolver(RepositorySystemSession session, String context, RepositorySystem repoSys,
            RemoteRepositoryManager remoteRepositoryManager, List<RemoteRepository> repositories) {
        this.session = session;
        this.context = context;
        this.repoSys = repoSys;
        this.remoteRepositoryManager = remoteRepositoryManager;
        this.repositories = repositories;
        this.repositoryIds = new HashSet<String>();
    }

    private AntModelResolver(AntModelResolver original) {
        this.session = original.session;
        this.context = original.context;
        this.repoSys = original.repoSys;
        this.remoteRepositoryManager = original.remoteRepositoryManager;
        this.repositories = original.repositories;
        this.repositoryIds = new HashSet<String>(original.repositoryIds);
    }

    public void addRepository(Repository repository) throws InvalidRepositoryException {
        if (!repositoryIds.add(repository.getId())) {
            return;
        }

        List<RemoteRepository> newRepositories = Collections.singletonList(convert(repository));

        this.repositories = remoteRepositoryManager.aggregateRepositories(session, repositories, newRepositories,
                true);
    }

    static RemoteRepository convert(Repository repository) {
        RemoteRepository.Builder builder = new RemoteRepository.Builder(repository.getId(), repository.getLayout(),
                repository.getUrl());
        builder.setSnapshotPolicy(convert(repository.getSnapshots()));
        builder.setReleasePolicy(convert(repository.getReleases()));
        return builder.build();
    }

    private static RepositoryPolicy convert(org.apache.maven.model.RepositoryPolicy policy) {
        boolean enabled = true;
        String checksums = RepositoryPolicy.CHECKSUM_POLICY_WARN;
        String updates = RepositoryPolicy.UPDATE_POLICY_DAILY;

        if (policy != null) {
            enabled = policy.isEnabled();
            if (policy.getUpdatePolicy() != null) {
                updates = policy.getUpdatePolicy();
            }
            if (policy.getChecksumPolicy() != null) {
                checksums = policy.getChecksumPolicy();
            }
        }

        return new RepositoryPolicy(enabled, updates, checksums);
    }

    public ModelResolver newCopy() {
        return new AntModelResolver(this);
    }

    public ModelSource resolveModel(String groupId, String artifactId, String version)
            throws UnresolvableModelException {
        Artifact pomArtifact = new DefaultArtifact(groupId, artifactId, "", "pom", version);

        try {
            ArtifactRequest request = new ArtifactRequest(pomArtifact, repositories, context);
            pomArtifact = repoSys.resolveArtifact(session, request).getArtifact();
        } catch (ArtifactResolutionException e) {
            throw new UnresolvableModelException("Failed to resolve POM for " + groupId + ":" + artifactId + ":"
                    + version + " due to " + e.getMessage(), groupId, artifactId, version, e);
        }

        File pomFile = pomArtifact.getFile();

        return new FileModelSource(pomFile);
    }

}