org.jboss.demos.maven.classpath.deployer.ArtifactDependencyResolver.java Source code

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Here is the source code for org.jboss.demos.maven.classpath.deployer.ArtifactDependencyResolver.java

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/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.demos.maven.classpath.deployer;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.DefaultArtifactRepository;
import org.apache.maven.artifact.repository.layout.DefaultRepositoryLayout;
import org.apache.maven.embedder.Configuration;
import org.apache.maven.embedder.ConfigurationValidationResult;
import org.apache.maven.embedder.DefaultConfiguration;
import org.apache.maven.embedder.MavenEmbedder;
import org.apache.maven.embedder.MavenEmbedderLogger;
import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenExecutionResult;
import org.apache.maven.project.MavenProject;
import org.apache.maven.settings.Profile;
import org.apache.maven.settings.Repository;

/**
 * The internal maven dependency resolver, delegating the work to the
 * <code>MavenEmbedder</code> to do the actual work.
 * 
 * @author Emanuel Muckenhuber
 * @version $Revision$
 */
public class ArtifactDependencyResolver {

    /** The logger plugin. */
    private static final MavenEmbedderLogger logger = new MavenEmbedderLoggerPlugin();

    /** The user settings file. */
    private final File userSettings;

    /** The local repository file. */
    private final File localRepository;

    public ArtifactDependencyResolver(File userSettings, File localRepository) {
        if (userSettings == null) {
            throw new IllegalArgumentException("null user settings file");
        }
        if (localRepository == null) {
            throw new IllegalArgumentException("null local file repository");
        }
        this.userSettings = userSettings;
        this.localRepository = localRepository;
    }

    /**
     * Resolve the dependencies of a maven project.
     * 
     * @param mavenProject the file to the mvn project pom
     * @return the included artifacts
     * @throws Exception for any error
     */
    public IncludedArtifacts resolveDependencies(File mavenProject) throws Exception {
        // Create and validate the configuration
        Configuration configuration = createConfiguration();
        // Create the embedder
        MavenEmbedder embedder = new MavenEmbedder(configuration);
        embedder.setLogger(logger);

        // Read classpath pom
        MavenProject project = embedder.readProject(mavenProject);

        MavenExecutionRequest request = new DefaultMavenExecutionRequest();
        request.setBaseDirectory(project.getBasedir());

        MavenExecutionResult executionResult = embedder.readProjectWithDependencies(request);
        Set<Artifact> artifacts = executionResult.getArtifactResolutionResult().getArtifacts();

        // Process the project dependencies
        IncludedArtifacts included = new IncludedArtifacts();
        for (Artifact artifact : artifacts) {
            // Add the artifact 
            included.addArtifact(artifact);
        }
        return included;
    }

    /**
     * Create and validate the configuration
     * 
     * @return the configuration
     * @throws IllegalStateException in case there went something wrong
     */
    Configuration createConfiguration() {
        // Create the configuration
        Configuration configuration = new DefaultConfiguration();
        configuration.setUserSettingsFile(userSettings);
        configuration.setLocalRepository(localRepository);

        // Validate the configuration
        ConfigurationValidationResult validateConfiguration = MavenEmbedder.validateConfiguration(configuration);
        if (validateConfiguration.isValid() == false) {
            throw new IllegalStateException("invalid configuration" + validateConfiguration);
        }
        return configuration;
    }

    /**
     * Create the remote repositories, based on the settings.
     * 
     * @param embedder the embedder
     * @return a collection of remote artifact repositories
     */
    @SuppressWarnings("unchecked")
    List<ArtifactRepository> resolveRepositories(MavenEmbedder embedder) {
        // Create the remote repositories
        List<ArtifactRepository> repos = new ArrayList<ArtifactRepository>();
        // Get the first profile ?
        Profile profile = (Profile) embedder.getSettings().getProfiles().get(0);
        // Process the repositories
        List<Repository> repositories = profile.getRepositories();
        for (Repository repo : repositories) {
            // Create a new default artifact repository
            ArtifactRepository ar = new DefaultArtifactRepository(repo.getId(), repo.getUrl(),
                    new DefaultRepositoryLayout());

            // Add it
            repos.add(ar);
        }
        return repos;
    }

}