ResolveArtifactMojo.java

/*******************************************************************************
 * Copyright (c) 2010, 2013 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.examples.maven;

import java.util.List;

import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
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.repository.RemoteRepository;
import org.eclipse.aether.resolution.ArtifactRequest;
import org.eclipse.aether.resolution.ArtifactResolutionException;
import org.eclipse.aether.resolution.ArtifactResult;

/**
 * Resolves a single artifact (not including its transitive dependencies).
 * 
 * @goal resolve-artifact
 */
public class ResolveArtifactMojo
    extends AbstractMojo
{

    /**
     * The entry point to Aether, i.e. the component doing all the work.
     * 
     * @component
     */
    private RepositorySystem repoSystem;

    /**
     * The current repository/network configuration of Maven.
     * 
     * @parameter default-value="${repositorySystemSession}"
     * @readonly
     */
    private RepositorySystemSession repoSession;

    /**
     * The project's remote repositories to use for the resolution.
     * 
     * @parameter default-value="${project.remoteProjectRepositories}"
     * @readonly
     */
    private List<RemoteRepository> remoteRepos;

    /**
     * The {@code <groupId>:<artifactId>[:<extension>[:<classifier>]]:<version>} of the artifact to resolve.
     * 
     * @parameter expression="${aether.artifactCoords}"
     */
    private String artifactCoords;

    public void execute()
        throws MojoExecutionException, MojoFailureException
    {
        Artifact artifact;
        try
        {
            artifact = new DefaultArtifact( artifactCoords );
        }
        catch ( IllegalArgumentException e )
        {
            throw new MojoFailureException( e.getMessage(), e );
        }

        ArtifactRequest request = new ArtifactRequest();
        request.setArtifact( artifact );
        request.setRepositories( remoteRepos );

        getLog().info( "Resolving artifact " + artifact + " from " + remoteRepos );

        ArtifactResult result;
        try
        {
            result = repoSystem.resolveArtifact( repoSession, request );
        }
        catch ( ArtifactResolutionException e )
        {
            throw new MojoExecutionException( e.getMessage(), e );
        }

        getLog().info( "Resolved artifact " + artifact + " to " + result.getArtifact().getFile() + " from "
                           + result.getRepository() );
    }

}