package org.apache.maven.plugin.dependency.resolvers;

 /*

  * 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.

  */

 import org.apache.maven.artifact.Artifact;

 import org.apache.maven.artifact.repository.ArtifactRepository;

 import org.apache.maven.artifact.resolver.ArtifactNotFoundException;

 import org.apache.maven.artifact.resolver.ArtifactResolutionException;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.dependency.AbstractResolveMojo;

 import org.apache.maven.plugin.dependency.utils.DependencyUtil;

 import org.apache.maven.plugins.annotations.LifecyclePhase;

 import org.apache.maven.plugins.annotations.Mojo;

 import org.apache.maven.plugins.annotations.Parameter;

 import org.apache.maven.project.ProjectBuildingException;

 import org.apache.maven.project.artifact.InvalidDependencyVersionException;

 import org.apache.maven.shared.artifact.filter.collection.ArtifactsFilter;

 import org.codehaus.plexus.util.IOUtil;

 import java.io.FileWriter;

 import java.io.IOException;

 import java.io.Writer;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Set;

 /**

  * Goal that resolves all project plugins and reports and their dependencies.

  *

  * @author <a href="mailto:brianf@apache.org">Brian Fox</a>

  * @version $Id: ResolvePluginsMojo.java 1400739 2012-10-21 23:05:22Z hboutemy $

  * @since 2.0

  */

 @Mojo( name = "resolve-plugins", defaultPhase = LifecyclePhase.GENERATE_SOURCES, threadSafe = true )

 public class ResolvePluginsMojo

     extends AbstractResolveMojo

 {

     /**

      * Remote repositories which will be searched for plugins.

      */

     @Parameter( defaultValue = "${project.pluginArtifactRepositories}", readonly = true, required = true )

     private List<ArtifactRepository> remotePluginRepositories;

     /**

      * If we should exclude transitive dependencies

      */

     @Parameter( property = "excludeTransitive", defaultValue = "false" )

     private boolean excludeTransitive;

     /**

      * Main entry into mojo. Gets the list of dependencies and iterates through

      * displaying the resolved version.

      *

      * @throws MojoExecutionException with a message if an error occurs.

      */

     public void execute()

         throws MojoExecutionException

     {

         Writer outputWriter = null;

         try

         {

             Set<Artifact> plugins = resolvePluginArtifacts();

             if ( this.outputFile != null )

             {

                 outputFile.getParentFile().mkdirs();

                 outputWriter = new FileWriter( outputFile );

             }

             for ( Artifact plugin : plugins )

             {

                 String logStr = "Plugin Resolved: " + DependencyUtil.getFormattedFileName( plugin, false );

                 if ( !silent )

                 {

                     this.getLog().info( logStr );

                 }

                 if ( outputWriter != null )

                 {

                     outputWriter.write( logStr );

                     outputWriter.write( "\n" );

                 }

                 if ( !excludeTransitive )

                 {

                     for ( Artifact artifact : resolveArtifactDependencies( plugin ) )

                     {

                         logStr =

                             "    Plugin Dependency Resolved: " + DependencyUtil.getFormattedFileName( artifact, false );

                         if ( !silent )

                         {

                             this.getLog().info( logStr );

                         }

                         if ( outputWriter != null )

                         {

                             outputWriter.write( logStr );

                             outputWriter.write( "\n" );

                         }

                     }

                 }

             }

         }

         catch ( IOException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( ArtifactResolutionException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( ArtifactNotFoundException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( ProjectBuildingException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         catch ( InvalidDependencyVersionException e )

         {

             throw new MojoExecutionException( "Nested:", e );

         }

         finally

         {

             IOUtil.close( outputWriter );

         }

     }

     /**

      * This method resolves the plugin artifacts from the project.

      *

      * @return set of resolved plugin artifacts.

      * @throws ArtifactResolutionException

      * @throws ArtifactNotFoundException

      */

     protected Set<Artifact> resolvePluginArtifacts()

         throws ArtifactResolutionException, ArtifactNotFoundException

     {

         @SuppressWarnings( "unchecked" ) Set<Artifact> plugins = project.getPluginArtifacts();

         @SuppressWarnings( "unchecked" ) Set<Artifact> reports = project.getReportArtifacts();

         Set<Artifact> artifacts = new HashSet<Artifact>();

         artifacts.addAll( reports );

         artifacts.addAll( plugins );

         for ( Artifact artifact : artifacts )

         {

             // resolve the new artifact

             this.resolver.resolve( artifact, this.remotePluginRepositories, this.getLocal() );

         }

         return artifacts;

     }

     protected ArtifactsFilter getMarkedArtifactFilter()

     {

         return null;

     }

 }