org.jasig.maven.notice.AbstractNoticeMojo Maven / Gradle / Ivy
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Generates Apache style NOTICE files
/**
* Licensed to Jasig under one or more contributor license
* agreements. See the NOTICE file distributed with this work
* for additional information regarding copyright ownership.
* Jasig 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.
*/
package org.jasig.maven.notice;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.text.MessageFormat;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.DependencyResolutionRequiredException;
import org.apache.maven.artifact.factory.ArtifactFactory;
import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.ArtifactCollector;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.MavenProjectBuilder;
import org.apache.maven.shared.dependency.tree.DependencyNode;
import org.apache.maven.shared.dependency.tree.DependencyTreeBuilder;
import org.apache.maven.shared.dependency.tree.DependencyTreeBuilderException;
import org.apache.maven.shared.dependency.tree.traversal.DependencyNodeVisitor;
import org.jasig.maven.notice.lookup.ArtifactLicense;
import org.jasig.maven.notice.lookup.LicenseLookup;
import org.jasig.maven.notice.lookup.MappedVersion;
import org.jasig.maven.notice.util.ResourceFinder;
/**
* Common base mojo for notice related plugins
*
* @author Eric Dalquist
* @version $Revision: 22285 $
*/
public abstract class AbstractNoticeMojo extends AbstractMojo {
/* DI configuration of Maven components needed for the plugin */
/**
* The Maven Project.
*
* @parameter expression="${project}"
* @required
* @readonly
*/
protected MavenProject project;
/**
* The dependency tree builder to use.
*
* @component
* @required
* @readonly
*/
protected DependencyTreeBuilder dependencyTreeBuilder;
/**
* The artifact repository to use.
*
* @parameter expression="${localRepository}"
* @required
* @readonly
*/
protected ArtifactRepository localRepository;
/**
* The artifact factory to use.
*
* @component
* @required
* @readonly
*/
protected ArtifactFactory artifactFactory;
/**
* The artifact metadata source to use.
*
* @component
* @required
* @readonly
*/
protected ArtifactMetadataSource artifactMetadataSource;
/**
* The artifact collector to use.
*
* @component
* @required
* @readonly
*/
protected ArtifactCollector artifactCollector;
/**
* Maven Project Builder component.
*
* @component
* @required
* @readonly
*/
protected MavenProjectBuilder mavenProjectBuilder;
/* Mojo Configuration Properties */
/**
* License Lookup XML files / URLs. Lookups are done in-order with
* files being checked top to bottom for matches
*
* @parameter
*/
protected String[] licenseLookup = new String[0];
/**
* Template for NOTICE file generation
*
* @parameter default-value="NOTICE.template"
*/
protected String noticeTemplate = "NOTICE.template";
/**
* Placeholder string in the NOTICE template file
*
* @parameter default-value="#GENERATED_NOTICES#"
*/
protected String noticeTemplatePlaceholder = "#GENERATED_NOTICES#";
/**
* Output location for the generated NOTICE file
*
* @parameter default-value="${basedir}"
*/
protected String outputDir = "";
/**
* Output file name
*
* @parameter default-value="NOTICE"
*/
protected String fileName = "NOTICE";
/**
* @parameter default-value="${project.build.sourceEncoding}"
*/
protected String encoding = "UTF-8";
/**
* Set if the NOTICE file should aggregate all dependencies from all child modules.
*
* @parameter default-value="true"
*/
protected boolean aggregating = true;
/**
* The {@link MessageFormat} syntax string used to generate each license line in the NOTICE file
* {0} - artifact name
* {1} - license name
*
* @parameter default-value=" {0} under {1}"
*/
protected String noticeMessage = " {0} under {1}";
private MessageFormat parsedNoticeMessage;
/**
* ArtifactIds of child modules to exclude
*
* @parameter
*/
protected Set excludedModules = new LinkedHashSet();
/* (non-Javadoc)
* @see org.apache.maven.plugin.Mojo#execute()
*/
public final void execute() throws MojoExecutionException, MojoFailureException {
final Log logger = this.getLog();
//If aggregating skip child modules
if (aggregating && !this.project.isExecutionRoot()) {
return;
}
final ResourceFinder finder = this.getResourceFinder();
final LicenseLookupHelper licenseLookupHelper = new LicenseLookupHelper(logger, finder, licenseLookup);
final List remoteArtifactRepositories = project.getRemoteArtifactRepositories();
final LicenseResolvingNodeVisitor visitor = new LicenseResolvingNodeVisitor(
logger,
licenseLookupHelper, remoteArtifactRepositories,
this.mavenProjectBuilder, this.localRepository);
this.parseProject(logger, this.project, visitor);
//Check for any unresolved artifacts
final Set unresolvedArtifacts = visitor.getUnresolvedArtifacts();
this.checkUnresolved(logger, unresolvedArtifacts);
//Convert the resovled notice data into a String
final Map resolvedLicenses = visitor.getResolvedLicenses();
final String noticeLines = this.generateNoticeLines(resolvedLicenses);
final String noticeTemplateContents = this.readNoticeTemplate(finder);
//Replace the template placeholder with the generated notice data
final String noticeContents = noticeTemplateContents.replaceAll(Pattern.quote(this.noticeTemplatePlaceholder), noticeLines);
//Let the subclass deal with the generated NOTICE file
this.handleNotice(logger, finder, noticeContents);
}
/**
* Called with the expected NOTICE file contents for this project.
*/
protected abstract void handleNotice(Log logger, ResourceFinder finder, String noticeContents) throws MojoFailureException;
/**
* Loads the dependency tree for the project via {@link #loadDependencyTree(MavenProject)} and then uses
* the {@link DependencyNodeVisitor} to load the license data. If {@link #aggregating} is enabled the method
* recurses on each child module.
*/
@SuppressWarnings("unchecked")
protected void parseProject(Log logger, MavenProject project, DependencyNodeVisitor visitor) throws MojoExecutionException, MojoFailureException {
logger.info("Parsing Dependencies for: " + project.getName());
//Load and parse immediate dependencies
final DependencyNode tree = this.loadDependencyTree(project);
tree.accept(visitor);
//If not aggregating don't recurse on modules
if (!this.aggregating) {
return;
}
//No child modules, return
final List collectedProjects = project.getCollectedProjects();
if (collectedProjects == null) {
return;
}
//Find all sub-modules for the project
for (final MavenProject moduleProject : collectedProjects) {
final String artifactId = moduleProject.getArtifactId();
if (this.excludedModules.contains(artifactId)) {
logger.info("Skipping aggregation of child module " + moduleProject.getName() + " with excluded artifactId: " + artifactId);
continue;
}
this.parseProject(logger, moduleProject, visitor);
}
}
/**
* Check if there are any unresolved artifacts in the Set. If there are print a helpful error
* message and then throw a {@link MojoFailureException}
*/
protected void checkUnresolved(Log logger, Set unresolvedArtifacts) throws MojoFailureException {
if (unresolvedArtifacts.isEmpty()) {
return;
}
final LicenseLookup licenseLookup = new LicenseLookup();
final List artifacts = licenseLookup.getArtifact();
logger.error("Failed to find Licenses for the following dependencies: ");
for (final Artifact unresolvedArtifact : unresolvedArtifacts) {
logger.error("\t" + unresolvedArtifact);
//Build LicenseLookup data model for artifacts that failed resolution
final ArtifactLicense artifactLicense = new ArtifactLicense();
artifactLicense.setGroupId(unresolvedArtifact.getGroupId());
artifactLicense.setArtifactId(unresolvedArtifact.getArtifactId());
final List mappedVersions = artifactLicense.getVersion();
final MappedVersion mappedVersion = new MappedVersion();
mappedVersion.setValue(unresolvedArtifact.getVersion());
mappedVersions.add(mappedVersion);
artifacts.add(artifactLicense);
}
logger.error("Try adding them to a 'licenseLookup' file.");
final File buildDir = new File(project.getBuild().getDirectory());
final File mappingsfile = new File(buildDir, "license-mappings.xml");
//Make sure the target directory exists
try {
FileUtils.forceMkdir(buildDir);
}
catch (IOException e) {
logger.warn("Failed to write stub license-mappings.xml file to: " + mappingsfile, e);
}
//Write the example mappings file
final Marshaller marshaller = LicenseLookupContext.getMarshaller();
try {
marshaller.marshal(licenseLookup, mappingsfile);
logger.error("A stub license mapping file has been written to: " + mappingsfile);
}
catch (JAXBException e) {
logger.warn("Failed to write stub license-mappings.xml file to: " + mappingsfile, e);
}
throw new MojoFailureException("Failed to find Licenses for " + unresolvedArtifacts.size() + " artifacts");
}
/**
* Create the generated part of the NOTICE file based on the resolved license data
*/
protected String generateNoticeLines(Map resolvedLicenses) {
final StringBuilder builder = new StringBuilder();
final MessageFormat messageFormat = getNoticeMessageFormat();
for (final Map.Entry resolvedEntry : resolvedLicenses.entrySet()) {
final String line = messageFormat.format(new Object[] { resolvedEntry.getKey(), resolvedEntry.getValue()});
builder.append(line).append("\n");
}
return builder.toString();
}
/**
* Get the {@link MessageFormat} of the configured {@link #noticeMessage}
*/
protected final MessageFormat getNoticeMessageFormat() {
final MessageFormat messageFormat;
synchronized (this) {
if (this.parsedNoticeMessage == null || !this.noticeMessage.equals(this.parsedNoticeMessage.toPattern())) {
this.parsedNoticeMessage = new MessageFormat(this.noticeMessage);
}
messageFormat = this.parsedNoticeMessage;
}
return messageFormat;
}
/**
* Read the template notice file into a string
*/
protected String readNoticeTemplate(ResourceFinder finder) throws MojoFailureException {
final URL inputFile = finder.findResource(this.noticeTemplate);
final String noticeTemplateContents;
InputStream inputStream = null;
try {
inputStream = inputFile.openStream();
noticeTemplateContents = IOUtils.toString(inputStream, this.encoding);
}
catch (IOException e) {
throw new MojoFailureException("Failed to open NOTICE Template File '" + this.noticeTemplate + "' from: " + inputFile, e);
}
finally {
IOUtils.closeQuietly(inputStream);
}
return noticeTemplateContents;
}
/**
* Resolve the {@link File} to write the generated NOTICE file to
*/
protected File getNoticeOutputFile() {
if (this.outputDir == null) {
this.outputDir = "";
}
File outputPath = new File(this.outputDir);
if (!outputPath.isAbsolute()) {
outputPath = new File(project.getBasedir(), this.outputDir);
}
return new File(outputPath, this.fileName);
}
/**
* Create the {@link ResourceFinder} for the project
*/
@SuppressWarnings("unchecked")
protected ResourceFinder getResourceFinder() throws MojoExecutionException {
final ResourceFinder finder = new ResourceFinder(this.project.getBasedir());
try {
final List classpathElements = this.project.getCompileClasspathElements();
finder.setCompileClassPath(classpathElements);
}
catch (DependencyResolutionRequiredException e) {
throw new MojoExecutionException(e.getMessage(), e);
}
finder.setPluginClassPath(getClass().getClassLoader());
return finder;
}
/**
* Load the dependency tree for the specified project
*/
protected DependencyNode loadDependencyTree(MavenProject project) throws MojoExecutionException {
try {
return this.dependencyTreeBuilder.buildDependencyTree(
project, this.localRepository,
this.artifactFactory, this.artifactMetadataSource,
null, this.artifactCollector);
}
catch (DependencyTreeBuilderException e) {
throw new MojoExecutionException("Cannot build project dependency tree for project: " + project, e );
}
}
}