jonvolfson commented on a change in pull request #57: URL: https://github.com/apache/maven-dependency-plugin/pull/57#discussion_r441031230
########## File path: src/main/java/org/apache/maven/plugins/dependency/GetClassesMojo.java ########## @@ -0,0 +1,406 @@ +package org.apache.maven.plugins.dependency; + +/* + * 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 java.io.IOException; +import java.util.ArrayList; +import java.util.Enumeration; +import java.util.List; +import java.util.Map; +import java.util.jar.JarEntry; +import java.util.jar.JarFile; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import org.apache.maven.artifact.handler.ArtifactHandler; +import org.apache.maven.artifact.handler.manager.ArtifactHandlerManager; +import org.apache.maven.artifact.repository.ArtifactRepository; +import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy; +import org.apache.maven.artifact.repository.MavenArtifactRepository; +import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout; +import org.apache.maven.execution.MavenSession; +import org.apache.maven.plugin.AbstractMojo; +import org.apache.maven.plugin.MojoExecutionException; +import org.apache.maven.plugin.MojoFailureException; +import org.apache.maven.plugins.annotations.Component; +import org.apache.maven.plugins.annotations.Mojo; +import org.apache.maven.plugins.annotations.Parameter; +import org.apache.maven.project.DefaultProjectBuildingRequest; +import org.apache.maven.project.ProjectBuildingRequest; +import org.apache.maven.repository.RepositorySystem; +import org.apache.maven.settings.Settings; +import org.apache.maven.shared.transfer.artifact.ArtifactCoordinate; +import org.apache.maven.shared.transfer.artifact.DefaultArtifactCoordinate; +import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolver; +import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResolverException; +import org.apache.maven.shared.transfer.artifact.resolve.ArtifactResult; +import org.apache.maven.shared.transfer.dependencies.DefaultDependableCoordinate; +import org.apache.maven.shared.transfer.dependencies.DependableCoordinate; +import org.apache.maven.shared.transfer.dependencies.resolve.DependencyResolver; +import org.apache.maven.shared.transfer.dependencies.resolve.DependencyResolverException; +import org.codehaus.plexus.util.StringUtils; + + +/** + * Retrieves and lists all class dependencies for the specified artifact from the specified remote repositories. + */ +@Mojo( name = "get-classes", requiresProject = false, threadSafe = true ) +public class GetClassesMojo + extends AbstractMojo +{ + private static final Pattern ALT_REPO_SYNTAX_PATTERN = Pattern.compile( "(.+)::(.*)::(.+)" ); + + @Parameter( defaultValue = "${session}", required = true, readonly = true ) + private MavenSession session; + + @Component + private ArtifactResolver artifactResolver; + + @Component + private DependencyResolver dependencyResolver; + + @Component + private ArtifactHandlerManager artifactHandlerManager; + + /** + * Map that contains the layouts. + */ + @Component( role = ArtifactRepositoryLayout.class ) + private Map<String, ArtifactRepositoryLayout> repositoryLayouts; + + /** + * The repository system. + */ + @Component + private RepositorySystem repositorySystem; + + private DefaultDependableCoordinate coordinate = new DefaultDependableCoordinate(); + + /** + * The groupId of the artifact to download. Ignored if {@link #artifact} is used. + */ + @Parameter( property = "groupId" ) + private String groupId; + + /** + * The artifactId of the artifact to download. Ignored if {@link #artifact} is used. + */ + @Parameter( property = "artifactId" ) + private String artifactId; + + /** + * The version of the artifact to download. Ignored if {@link #artifact} is used. + */ + @Parameter( property = "version" ) + private String version; + + /** + * The classifier of the artifact to download. Ignored if {@link #artifact} is used. + * + * @since 2.3 + */ + @Parameter( property = "classifier" ) + private String classifier; + + /** + * The packaging of the artifact to download. Ignored if {@link #artifact} is used. + */ + @Parameter( property = "packaging", defaultValue = "jar" ) + private String packaging = "jar"; + + /** + * Repositories in the format id::[layout]::url or just url, separated by comma. ie. + * central::default::https://repo.maven.apache.org/maven2,myrepo::::https://repo.acme.com,https://repo.acme2.com + */ + @Parameter( property = "remoteRepositories" ) + private String remoteRepositories; + + /** + * A string of the form groupId:artifactId:version[:packaging[:classifier]]. + */ + @Parameter( property = "artifact" ) + private String artifact; + + @Parameter( defaultValue = "${project.remoteArtifactRepositories}", readonly = true, required = true ) + private List<ArtifactRepository> pomRemoteRepositories; + + /** + * Download transitively, retrieving the specified artifact and all of its dependencies. + */ + @Parameter( property = "transitive", defaultValue = "true" ) + private boolean transitive = true; + + /** + * Skip plugin execution completely. + * + * @since 2.7 + */ + @Parameter( property = "mdep.skip", defaultValue = "false" ) + private boolean skip; + + @Override + public void execute() throws MojoExecutionException, MojoFailureException + { + ProjectBuildingRequest buildingRequest = buildBuildingRequest(); + DefaultDependableCoordinate coordinate = getCoordinate(); + + try + { + getLog().info( "Retrieving classes of dependencies for " + artifact ); + if ( isTransitive() ) + { + Iterable<ArtifactResult> artifacts = getDependencyResolver() + .resolveDependencies( buildingRequest, coordinate, null ); + + for ( ArtifactResult result : artifacts ) + { + printClassesFromArtifactResult( result ); + } + } + else + { + ArtifactResult result = getArtifactResolver() + .resolveArtifact( buildingRequest, toArtifactCoordinate( coordinate ) ); + + printClassesFromArtifactResult( result ); + } + } + catch ( ArtifactResolverException | DependencyResolverException | IOException e ) + { + throw new MojoExecutionException( "Couldn't download artifact: " + e.getMessage(), e ); + } + } + + public void printClassesFromArtifactResult( ArtifactResult result ) + throws IOException + { + JarFile jarFile = new JarFile( result.getArtifact().getFile() ); + Enumeration e = jarFile.entries(); + + while ( e.hasMoreElements() ) + { + JarEntry entry = (JarEntry) e.nextElement(); + String name = entry.getName(); + + // filter out files that do not end in .class + if ( name.length() <= 6 || !name.substring( name.length() - 6 ).equals( ".class" ) ) + { + continue; + } + + // remove .class from the end and change format to use periods instead of forward slashes + name = name.substring( 0, name.length() - 6 ).replace( '/', '.' ); + getLog().info( name ); + } + jarFile.close(); + } + + public ProjectBuildingRequest buildBuildingRequest() + throws MojoExecutionException, MojoFailureException + { + if ( artifact == null ) + { + throw new MojoFailureException( "You must specify an artifact, " + + "e.g. -Dartifact=org.apache.maven.plugins:maven-downloader-plugin:1.0" ); + } + if ( artifact != null ) + { + String[] tokens = StringUtils.split( artifact, ":" ); + if ( tokens.length < 3 || tokens.length > 5 ) + { + throw new MojoFailureException( "Invalid artifact, you must specify " + + "groupId:artifactId:version[:packaging[:classifier]] " + artifact ); + } + coordinate.setGroupId( tokens[0] ); + coordinate.setArtifactId( tokens[1] ); + coordinate.setVersion( tokens[2] ); + if ( tokens.length >= 4 ) + { + coordinate.setType( tokens[3] ); + } + if ( tokens.length == 5 ) + { + coordinate.setClassifier( tokens[4] ); + } + } + + ArtifactRepositoryPolicy always = + new ArtifactRepositoryPolicy( true, ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS, + ArtifactRepositoryPolicy.CHECKSUM_POLICY_WARN ); + + List<ArtifactRepository> repoList = new ArrayList<>(); + + if ( pomRemoteRepositories != null ) + { + repoList.addAll( pomRemoteRepositories ); + } + + if ( remoteRepositories != null ) + { + // Use the same format as in the deploy plugin id::layout::url + String[] repos = StringUtils.split( remoteRepositories, "," ); + for ( String repo : repos ) + { + repoList.add( parseRepository( repo, always ) ); + } + } + + ProjectBuildingRequest buildingRequest = + new DefaultProjectBuildingRequest( session.getProjectBuildingRequest() ); + + Settings settings = session.getSettings(); + repositorySystem.injectMirror( repoList, settings.getMirrors() ); + repositorySystem.injectProxy( repoList, settings.getProxies() ); + repositorySystem.injectAuthentication( repoList, settings.getServers() ); + + buildingRequest.setRemoteRepositories( repoList ); + + return buildingRequest; + } + + protected ArtifactCoordinate toArtifactCoordinate( DependableCoordinate dependableCoordinate ) + { + ArtifactHandler artifactHandler = artifactHandlerManager.getArtifactHandler( dependableCoordinate.getType() ); + DefaultArtifactCoordinate artifactCoordinate = new DefaultArtifactCoordinate(); + artifactCoordinate.setGroupId( dependableCoordinate.getGroupId() ); + artifactCoordinate.setArtifactId( dependableCoordinate.getArtifactId() ); + artifactCoordinate.setVersion( dependableCoordinate.getVersion() ); + artifactCoordinate.setClassifier( dependableCoordinate.getClassifier() ); + artifactCoordinate.setExtension( artifactHandler.getExtension() ); + return artifactCoordinate; + } + + ArtifactRepository parseRepository( String repo, ArtifactRepositoryPolicy policy ) + throws MojoFailureException + { + // if it's a simple url + String id = "temp"; + ArtifactRepositoryLayout layout = getLayout( "default" ); + String url = repo; Review comment: fixed, removed unneeded variable ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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