/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
|
* or http://forgerock.org/license/CDDLv1.0.html.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at legal-notices/CDDLv1_0.txt.
|
* If applicable, add the following below this CDDL HEADER, with the
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
* information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2015 ForgeRock AS.
|
*/
|
package org.forgerock.opendj.maven;
|
|
import org.apache.maven.artifact.DependencyResolutionRequiredException;
|
import org.apache.maven.plugin.AbstractMojo;
|
import org.apache.maven.plugin.MojoExecutionException;
|
import org.apache.maven.plugin.MojoFailureException;
|
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.plugins.annotations.ResolutionScope;
|
import org.apache.maven.project.MavenProject;
|
|
import java.io.BufferedReader;
|
import java.io.File;
|
import java.io.FileWriter;
|
import java.io.IOException;
|
import java.io.InputStream;
|
import java.io.InputStreamReader;
|
import java.net.MalformedURLException;
|
import java.net.URISyntaxException;
|
import java.net.URL;
|
import java.net.URLClassLoader;
|
import java.util.LinkedHashSet;
|
import java.util.LinkedList;
|
import java.util.List;
|
import java.util.Set;
|
|
/**
|
* Generate DocBook RefEntry source documents for command-line tools man pages.
|
*/
|
@Mojo(name = "generate-refentry", defaultPhase = LifecyclePhase.PREPARE_PACKAGE,
|
requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME)
|
public final class GenerateRefEntriesMojo extends AbstractMojo {
|
|
/** The Maven Project. */
|
@Parameter(property = "project", required = true, readonly = true)
|
private MavenProject project;
|
|
/** Tools for which to generate RefEntry files. */
|
@Parameter
|
private List<CommandLineTool> tools;
|
|
/** Where to write the RefEntry files. */
|
@Parameter(required = true)
|
private File outputDir;
|
|
/**
|
* Writes a RefEntry file to the output directory for each tool.
|
* Files names correspond to script names: {@code man-<name>.xml}.
|
*
|
* @throws MojoExecutionException Encountered a problem writing a file.
|
* @throws MojoFailureException Failed to initialize effectively,
|
* or to write one or more RefEntry files.
|
*/
|
@Override
|
public void execute() throws MojoExecutionException, MojoFailureException {
|
// A Maven plugin classpath does not include project files.
|
// Prepare a ClassLoader capable of loading the command-line tools.
|
URLClassLoader toolsClassLoader = getBootToolsClassLoader();
|
|
if (!isOutputDirAvailable()) {
|
throw new MojoFailureException("Output directory " + outputDir.getPath() + " not available");
|
}
|
|
for (CommandLineTool tool : tools) {
|
generateManPageForTool(toolsClassLoader, tool);
|
}
|
}
|
|
/**
|
* Returns a ClassLoader capable of loading the command-line tools.
|
* @return A ClassLoader capable of loading the command-line tools.
|
* @throws MojoFailureException Failed to build classpath.
|
*/
|
private URLClassLoader getBootToolsClassLoader() throws MojoFailureException {
|
URLClassLoader toolsClassLoader;
|
try {
|
List<String> runtimeClasspathElements = project.getRuntimeClasspathElements();
|
Set<URL> runtimeUrls = new LinkedHashSet<URL>();
|
for (String element : runtimeClasspathElements) {
|
runtimeUrls.add(new File(element).toURI().toURL());
|
}
|
toolsClassLoader = new URLClassLoader(
|
runtimeUrls.toArray(new URL[runtimeClasspathElements.size()]),
|
Thread.currentThread().getContextClassLoader());
|
} catch (DependencyResolutionRequiredException e) {
|
throw new MojoFailureException("Failed to access the runtime classpath.", e);
|
} catch (MalformedURLException e) {
|
throw new MojoFailureException("Failed to add element to classpath.", e);
|
}
|
debugClassPathElements(toolsClassLoader);
|
return toolsClassLoader;
|
}
|
|
/**
|
* Generate a RefEntry file to the output directory for a tool.
|
* The files name corresponds to the tool name: {@code man-<name>.xml}.
|
* @param toolsClassLoader The ClassLoader to run the tool.
|
* @param tool The tool to run in order to generate the page.
|
* @throws MojoExecutionException Failed to run the tool.
|
* @throws MojoFailureException Tool did not exit successfully.
|
*/
|
private void generateManPageForTool(final URLClassLoader toolsClassLoader, final CommandLineTool tool)
|
throws MojoExecutionException, MojoFailureException {
|
final File manPage = new File(outputDir, "man-" + tool.getName() + ".xml");
|
final String toolScript = tool.getName();
|
final String toolSects = pathsToXIncludes(tool.getTrailingSectionPaths());
|
final String toolClass = tool.getApplication();
|
List<String> commands = new LinkedList<String>();
|
commands.add(getJavaCommand());
|
commands.addAll(getJavaArgs(toolScript, toolSects));
|
commands.add("-classpath");
|
commands.add(getClassPath(toolsClassLoader));
|
commands.add(toolClass);
|
commands.add(getUsageArgument(toolScript));
|
getLog().info("Writing man page: " + manPage.getPath());
|
try {
|
// Tools tend to use System.exit() so run them as separate processes.
|
ProcessBuilder builder = new ProcessBuilder(commands);
|
Process process = builder.start();
|
writeToFile(process.getInputStream(), manPage);
|
process.waitFor();
|
final int result = process.exitValue();
|
if (result != 0) {
|
throw new MojoFailureException("Failed to write page. Tool exit code: " + result);
|
}
|
} catch (InterruptedException e) {
|
throw new MojoExecutionException(toolClass + " interrupted", e);
|
} catch (IOException e) {
|
throw new MojoExecutionException(toolClass + " not found", e);
|
}
|
}
|
|
/**
|
* Returns true if the output directory is available.
|
* Attempts to create the directory if it does not exist.
|
* @return True if the output directory is available.
|
*/
|
private boolean isOutputDirAvailable() {
|
return outputDir != null && (outputDir.exists() && outputDir.isDirectory() || outputDir.mkdirs());
|
}
|
|
/**
|
* Returns the path to the current Java executable.
|
* @return The path to the current Java executable.
|
*/
|
private String getJavaCommand() {
|
return System.getProperty("java.home") + File.separator + "bin" + File.separator + "java";
|
}
|
|
/**
|
* Returns the Java args for running a tool.
|
* @param scriptName The name of the tool.
|
* @param trailingSections The man page sections to Xinclude.
|
* @return The Java args for running a tool.
|
*/
|
private List<String> getJavaArgs(final String scriptName, final String trailingSections) {
|
List<String> args = new LinkedList<String>();
|
args.add("-Dorg.forgerock.opendj.gendoc=true");
|
args.add("-Dorg.opends.server.ServerRoot=" + System.getProperty("java.io.tmpdir"));
|
args.add("-Dcom.forgerock.opendj.ldap.tools.scriptName=" + scriptName);
|
args.add("-Dorg.forgerock.opendj.gendoc.trailing=" + trailingSections + "");
|
return args;
|
}
|
|
/**
|
* Returns the classpath for the class loader.
|
* @param classLoader Contains the URLs of the class path to return.
|
* @return The classpath for the class loader.
|
*/
|
private String getClassPath(final URLClassLoader classLoader) {
|
final StringBuilder stringBuilder = new StringBuilder();
|
final URL[] urls = classLoader.getURLs();
|
for (int i = 0; i < urls.length; i++) {
|
if (i > 0) {
|
stringBuilder.append(File.pathSeparator);
|
}
|
try {
|
stringBuilder.append(new File(urls[i].toURI()).getPath());
|
} catch (URISyntaxException e) {
|
getLog().info("Failed to add classpath element", e);
|
}
|
}
|
return stringBuilder.toString();
|
}
|
|
/**
|
* Logs what is on the classpath for debugging.
|
* @param classLoader The ClassLoader with the classpath.
|
*/
|
private void debugClassPathElements(ClassLoader classLoader) {
|
if (null == classLoader) {
|
return;
|
}
|
getLog().debug("--------------------");
|
getLog().debug(classLoader.toString());
|
if (classLoader instanceof URLClassLoader) {
|
final URLClassLoader ucl = (URLClassLoader) classLoader;
|
int i = 0;
|
for (URL url : ucl.getURLs()) {
|
getLog().debug("url[" + (i++) + "]=" + url);
|
}
|
}
|
debugClassPathElements(classLoader.getParent());
|
}
|
|
/**
|
* Translates relative paths to XML files into XInclude elements.
|
*
|
* @param paths Paths to XInclude'd files, relative to the RefEntry.
|
* @return String of XInclude elements corresponding to the paths.
|
*/
|
private String pathsToXIncludes(final List<String> paths) {
|
if (paths == null) {
|
return "";
|
}
|
|
// Assume xmlns:xinclude="http://www.w3.org/2001/XInclude",
|
// as in the declaration of resources/templates/refEntry.ftl.
|
final String nameSpace = "xinclude";
|
final StringBuilder result = new StringBuilder();
|
for (String path : paths) {
|
result.append("<").append(nameSpace).append(":include href='").append(path).append("' />");
|
}
|
return result.toString();
|
}
|
|
/**
|
* Returns the usage argument.
|
* @param scriptName The name of the tool.
|
* @return The usage argument.
|
*/
|
private String getUsageArgument(final String scriptName) {
|
return scriptName.equals("dsjavaproperties") ? "-H" : "-?";
|
}
|
|
/**
|
* Write the content of the input stream to the output file.
|
* @param input The input stream to write.
|
* @param output The file to write it to.
|
* @throws IOException Failed to write the content of the input stream.
|
*/
|
private void writeToFile(final InputStream input, final File output) throws IOException {
|
FileWriter writer = null;
|
try {
|
writer = new FileWriter(output);
|
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
|
String line;
|
while ((line = reader.readLine()) != null) {
|
writer.write(line);
|
writer.write(System.getProperty("line.separator"));
|
}
|
} finally {
|
if (writer != null) {
|
writer.close();
|
}
|
}
|
}
|
}
|
