package de.akquinet.innovation.play.maven;
import de.akquinet.innovation.play.maven.utils.CopyDependenciesEmbeddedMojo;
import org.apache.commons.io.FileUtils;
import org.apache.maven.archiver.MavenArchiveConfiguration;
import org.apache.maven.archiver.MavenArchiver;
import org.apache.maven.artifact.Artifact;
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.artifact.resolver.ArtifactResolver;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
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.codehaus.plexus.archiver.war.WarArchiver;
import org.codehaus.plexus.util.StringUtils;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
/**
* Packages the Play application as War.
*
* @goal package-war
* @phase package
* @requiresDependencyResolution test
*/
public class WarPackageMojo extends AbstractPlay2Mojo {
private static final String META_INF = "META-INF";
private static final String WEB_INF = "WEB-INF";
public static final String TLD_PATH = "WEB-INF/tld/";
public static final String SERVICES_PATH = "WEB-INF/services/";
public static final String MODULES_PATH = "WEB-INF/modules/";
public static final String EXTENSIONS_PATH = "WEB-INF/extensions/";
public static final String CLASSES_PATH = "WEB-INF/classes/";
public static final String LIB_PATH = "WEB-INF/lib/";
/**
* The directory where the webapp is built.
*
* @parameter default-value="${project.build.directory}/${project.build.finalName}"
*/
File webappDirectory;
/**
* Dependencies of the current plugin.
* This list is used to extract and copy the servlet bridge.
*
* @parameter expression="${plugin.artifacts}"
*/
List pluginArtifacts;
/**
* Used to look up Artifacts in the remote repository.
*
* @component
*/
protected ArtifactFactory factory;
/**
* Used to resolve Artifacts in the remote repository.
*
* @component
*/
protected ArtifactResolver resolver;
/**
* Artifact collector, needed to resolve dependencies.
*
* @component role="org.apache.maven.artifact.resolver.ArtifactCollector"
* @required
* @readonly
*/
protected ArtifactCollector artifactCollector;
/**
* The dependency tree builder to use.
*
* @component
* @required
* @readonly
*/
protected DependencyTreeBuilder dependencyTreeBuilder;
/**
* @component role="org.apache.maven.artifact.metadata.ArtifactMetadataSource" hint="maven"
* @required
* @readonly
*/
protected ArtifactMetadataSource artifactMetadataSource;
/**
* Location of the local repository.
*
* @parameter expression="${localRepository}"
* @readonly
* @required
*/
protected ArtifactRepository local;
/**
* List of Remote Repositories used by the resolver
*
* @parameter expression="${project.remoteArtifactRepositories}"
* @readonly
* @required
*/
protected List<ArtifactRepository> remoteRepos;
/**
* The WAR archiver.
*
* @component role="org.codehaus.plexus.archiver.Archiver" roleHint="war"
*/
protected WarArchiver warArchiver;
/**
* Enables or disabled the packaging of the application as a War file.
*
* @parameter default-value=true
*/
boolean buildWar;
/**
* Sets the war classifier.
*
* @parameter default-value=""
*/
String warClassifier;
/**
* Allows customization of the play packaging. The files specified in this attribute will get added to the distribution
* zip file. This allows, for example, to write your own start script and have it packaged in the distribution.
* This is done post-packaging by the play framework.
*
* This parameter is shared with the package mojo.
*
* @parameter
*/
List<String> additionalFiles = new ArrayList<String>();
DependencyNode treeRoot;
public void execute() throws MojoExecutionException, MojoFailureException {
if (!buildWar) {
getLog().info("Skipped War construction");
return;
}
getLog().info("Build war file");
prepareDependencyTree();
try {
// Create a temporary directory
if (webappDirectory.exists()) {
getLog().info(webappDirectory.getAbsolutePath() + " directory existing - deleting");
FileUtils.deleteDirectory(webappDirectory);
}
// Prepare structure.
prepareWarStructure();
// Copy dependencies to the right folders.
copyDependencies();
copyPlayDependencies();
// Copy class files, it must be the final class files built by Play.
copyClassFiles();
// Copy the servlet bridge.
copyServletBridge();
// Build the war file
File warFile = new File(buildDirectory, project.getBuild().getFinalName() + ".war");
packageWarFile(webappDirectory, warFile);
} catch (IOException e) {
getLog().error("Cannot build the War file : ", e);
throw new MojoExecutionException("Error during War file construction", e);
}
}
private void prepareDependencyTree() throws MojoExecutionException {
try {
getLog().debug("Building dependency tree");
treeRoot =
dependencyTreeBuilder.buildDependencyTree(project, local, factory,
artifactMetadataSource, null, artifactCollector);
} catch (DependencyTreeBuilderException e) {
getLog().error("Cannot build the dependency tree", e);
throw new MojoExecutionException("Cannot build the dependency tree", e);
}
}
public File getWebappDirectory() {
return webappDirectory;
}
public ArtifactFactory getFactory() {
return factory;
}
public ArtifactResolver getResolver() {
return resolver;
}
public ArtifactCollector getArtifactCollector() {
return artifactCollector;
}
public ArtifactMetadataSource getArtifactMetadataSource() {
return artifactMetadataSource;
}
public ArtifactRepository getLocal() {
return local;
}
public List<ArtifactRepository> getRemoteRepos() {
return remoteRepos;
}
public String getWarClassifier() {
return warClassifier;
}
private void copyPlayDependencies() throws IOException {
getLog().info("Copying Play runtime and its dependencies");
CopyDependenciesEmbeddedMojo copy = new CopyDependenciesEmbeddedMojo(this, "play-test");
try {
copy.execute();
} catch (MojoExecutionException e) {
getLog().error("Cannot copy play runtime", e);
throw new IOException("Error during the resolution of Play 2 dependencies", e);
}
}
private void copyServletBridge() throws IOException {
// We need to copy two artifacts : play2-war-core-common_2.9.1 and play2-war-core-servlet30_2.9.1
List<Artifact> artifacts = pluginArtifacts;
URL common = getUrlByArtifactId(artifacts, "play2-war-core-common_2.9.1");
URL servlet = getUrlByArtifactId(artifacts, "play2-war-core-servlet30_2.9.1");
FileUtils.copyURLToFile(common, new File(webappDirectory, LIB_PATH + "play2-war-core-common_2.9.1.jar"));
FileUtils.copyURLToFile(servlet, new File(webappDirectory, LIB_PATH + "play2-war-core-servlet30_2.9.1.jar"));
}
/**
* Gets the artifact's URL from the artifact list.
*
* @param artifacts the list of artifact
* @param artifactId the dependency artifact id.
* @return the artifact's URL or <code>null</code> if the URL cannot
* be found.
*/
private URL getUrlByArtifactId(List<Artifact> artifacts, String artifactId) {
for (Artifact artifact : artifacts) {
if (artifact.getArtifactId().equals(artifactId)) {
try {
return artifact.getFile().toURI().toURL();
} catch (MalformedURLException e) {
getLog().error("Cannot compute the url of the artifact : " + artifactId);
}
}
}
return null;
}
private void prepareWarStructure() {
File webinfDir = new File(webappDirectory, WEB_INF);
webinfDir.mkdirs();
File metainfDir = new File(webappDirectory, META_INF);
metainfDir.mkdirs();
}
private void copyClassFiles() throws IOException {
File scala = findScalaDirectory();
File classes = new File(scala, "classes");
if (classes.exists()) {
getLog().info("Copying classes from " + classes + " to " + CLASSES_PATH);
FileUtils.copyDirectory(classes, new File(webappDirectory, CLASSES_PATH));
}
File managedClasses = new File(scala, "classes_managed");
if (managedClasses.exists()) {
getLog().info("Copying classes from " + managedClasses + " to " + CLASSES_PATH);
FileUtils.copyDirectory(managedClasses, new File(webappDirectory, CLASSES_PATH));
}
File resourceClasses = new File(scala, "resource_managed");
if (resourceClasses.exists()) {
getLog().info("Copying resources from " + resourceClasses + " to " + CLASSES_PATH);
FileUtils.copyDirectory(resourceClasses, new File(webappDirectory, CLASSES_PATH));
}
}
private File findScalaDirectory() throws IOException {
File[] array = buildDirectory.listFiles(new FilenameFilter() {
public boolean accept(File file, String s) {
return s.startsWith("scala-");
}
});
if (array.length == 0) {
throw new IOException("Cannot find Play output files");
}
if (array.length > 1) {
throw new IOException("Cannot find Play output files - too many candidates");
}
return array[0];
}
private void packageWarFile(File war, File warFile) throws IOException {
getLog().info("Build war file " + warFile.getAbsolutePath() + " from " + war.getAbsolutePath());
// We build a Jar from the webappDirectory.
MavenArchiver archiver = new MavenArchiver();
archiver.setArchiver(warArchiver);
archiver.setOutputFile(warFile);
try {
warArchiver.addDirectory(webappDirectory);
// Manage additional files if any
if (! additionalFiles.isEmpty()) {
getLog().info("Adding additional files to War file : " + additionalFiles);
for (String file : additionalFiles) {
File fileToAdd = new File(project.getBasedir(), file);
if (!fileToAdd.exists()) {
throw new IOException(fileToAdd.getCanonicalPath() + " not found, can't add to war file");
}
warArchiver.addFile(fileToAdd, fileToAdd.getName());
}
}
warArchiver.setIgnoreWebxml(false);
MavenArchiveConfiguration archive = new MavenArchiveConfiguration();
archiver.createArchive(session, project, archive);
} catch (Exception e) {
getLog().error("Error during the construction of the War file with the archiving process", e);
throw new IOException("Cannot build the War file", e);
}
if (!StringUtils.isBlank(warClassifier)) {
projectHelper.attachArtifact(project, "war", warClassifier, warFile);
} else {
Artifact artifact = project.getArtifact();
if (project.getFile() == null || !project.getFile().exists()) {
artifact.setFile(warFile);
} else {
projectHelper.attachArtifact(project, "war", warFile);
}
}
}
private boolean mustBeEmbedded(Artifact artifact) {
return !artifact.isOptional() &&
EMBEDDED_SCOPES.contains(artifact.getScope()) &&
!artifact.getArtifactId().contains("servlet-api");
}
private List<String> EMBEDDED_SCOPES = Arrays.asList("compile");
public void copyDependencies()
throws IOException {
Set<Artifact> artifacts = project.getDependencyArtifacts();
for (Artifact artifact : artifacts) {
// The file name is just the artifact's file name.
String targetFileName = artifact.getFile().getName();
getLog().info("Processing: " + targetFileName);
if (mustBeEmbedded(artifact)) {
String type = artifact.getType();
if ("tld".equals(type)) {
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory, TLD_PATH + targetFileName));
} else if ("aar".equals(type)) {
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory, SERVICES_PATH + targetFileName));
} else if ("mar".equals(type)) {
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory, MODULES_PATH + targetFileName));
} else if ("xar".equals(type)) {
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory,
EXTENSIONS_PATH + targetFileName));
} else if ("jar".equals(type) || "ejb".equals(type) || "ejb-client".equals(type)
|| "test-jar".equals(type)) {
getLog().info("Copying " + targetFileName + " to " + LIB_PATH);
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory,
LIB_PATH + targetFileName));
} else if ("par".equals(type)) {
targetFileName = targetFileName.substring(0, targetFileName.lastIndexOf('.')) + ".jar";
FileUtils.copyFile(artifact.getFile(), new File(webappDirectory,
LIB_PATH + targetFileName));
} else if ("war".equals(type)) {
getLog().warn("Not supported dependency type : war");
} else if ("zip".equals(type)) {
getLog().warn("Not supported dependency type : zip");
} else {
getLog().debug(
"Artifact of type [" + type + "] is not supported, ignoring [" + artifact + "]");
}
}
}
}
public DependencyNode getDependencyTreeRoot() {
return treeRoot;
}
}