io.takari.maven.testing.executor.Embedded3xLauncher Maven / Gradle / Ivy
/**
* Copyright (c) 2014 Takari, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package io.takari.maven.testing.executor;
/*
* 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 static io.takari.maven.testing.executor.MavenInstallationUtils.SYSPROP_MAVEN_HOME;
import java.io.BufferedInputStream;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.StringTokenizer;
import org.codehaus.plexus.classworlds.ClassWorldException;
import org.codehaus.plexus.classworlds.launcher.ConfigurationException;
import org.codehaus.plexus.classworlds.launcher.ConfigurationHandler;
import org.codehaus.plexus.classworlds.launcher.ConfigurationParser;
import org.codehaus.plexus.classworlds.realm.DuplicateRealmException;
import org.codehaus.plexus.classworlds.realm.NoSuchRealmException;
/**
* Launches an embedded Maven 3.x instance from some Maven installation directory.
*
* @author Benjamin Bentmann
*/
class Embedded3xLauncher implements MavenLauncher {
private static class ClassworldsConfiguration implements ConfigurationHandler {
private String mainType;
private String mainRealm;
private LinkedHashMap> realms = new LinkedHashMap<>();
private List curEntries;
@Override
public void setAppMain(String mainType, String mainRealm) {
this.mainType = mainType;
this.mainRealm = mainRealm;
}
@Override
public void addRealm(String realm) throws DuplicateRealmException {
if (!realms.containsKey(realm)) {
curEntries = new ArrayList<>();
realms.put(realm, curEntries);
}
}
@Override
public void addImportFrom(String relamName, String importSpec) throws NoSuchRealmException {
throw new UnsupportedOperationException();
}
@Override
public void addLoadFile(File file) {
if (curEntries == null) {
throw new IllegalStateException();
}
curEntries.add(file.getAbsolutePath());
}
public void addEntries(String realm, List locations) {
List entries = realms.get(realm);
if (entries == null) {
throw new IllegalStateException();
}
entries.addAll(0, locations);
}
@Override
public void addLoadURL(URL url) {
if (curEntries == null) {
throw new IllegalStateException();
}
curEntries.add(url.toExternalForm());
}
public void store(OutputStream os) throws IOException {
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(os, "UTF-8")); //$NON-NLS-1$
out.write(String.format("main is %s from %s\n", mainType, mainRealm));
for (Map.Entry> realm : realms.entrySet()) {
out.write(String.format("[%s]\n", realm.getKey()));
for (String entry : realm.getValue()) {
out.write(String.format("load %s\n", entry));
}
}
out.flush();
}
}
private static class Key {
private final File mavenHome;
private final File classworldConf;
private final List bootclasspath;
private final List extensions;
private final List args;
public Key(File mavenHome, File classworldConf, List bootclasspath, List extensions, List args) {
this.mavenHome = mavenHome;
this.classworldConf = classworldConf;
this.bootclasspath = clone(bootclasspath);
this.extensions = clone(extensions);
this.args = clone(args);
}
@Override
public int hashCode() {
int hash = 17;
hash = hash * 31 + mavenHome.hashCode();
hash = hash * 31 + (classworldConf != null ? classworldConf.hashCode() : 0);
hash = hash * 31 + (bootclasspath != null ? bootclasspath.hashCode() : 0);
hash = hash * 31 + (extensions != null ? extensions.hashCode() : 0);
hash = hash * 31 + (args != null ? args.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Key)) {
return false;
}
Key other = (Key) obj;
return eq(mavenHome, other.mavenHome) && eq(classworldConf, other.classworldConf) && eq(bootclasspath, other.bootclasspath) && eq(extensions, other.extensions) && eq(args, other.args);
}
private static List clone(List origin) {
return origin != null ? new ArrayList<>(origin) : null;
}
private static boolean eq(T a, T b) {
return a != null ? a.equals(b) : b == null;
}
}
private static final Map CACHE = new HashMap<>();
private final File mavenHome;
private final Object classWorld;
private final Object mavenCli;
private final Method doMain;
private final List args;
private Embedded3xLauncher(File mavenHome, Object classWorld, Object mavenCli, Method doMain, List args) {
this.mavenHome = mavenHome;
this.classWorld = classWorld;
this.mavenCli = mavenCli;
this.doMain = doMain;
this.args = args;
}
/**
* Launches an embedded Maven 3.x instance from some Maven installation directory.
*/
public static Embedded3xLauncher createFromMavenHome(File mavenHome, File classworldConf, List extensions, List args) throws LauncherException {
if (!isValidMavenHome(mavenHome)) {
throw new LauncherException("Invalid Maven home directory " + mavenHome);
}
List bootclasspath = toClasspath(System.getProperty("maven.bootclasspath"));
Properties originalProperties = copy(System.getProperties());
System.setProperty(SYSPROP_MAVEN_HOME, mavenHome.getAbsolutePath());
try {
final Key key = new Key(mavenHome, classworldConf, bootclasspath, extensions, args);
Embedded3xLauncher launcher = CACHE.get(key);
if (launcher == null) {
launcher = createFromMavenHome0(mavenHome, classworldConf, bootclasspath, extensions, args);
CACHE.put(key, launcher);
}
return launcher;
} finally {
System.setProperties(originalProperties);
}
}
private static boolean isValidMavenHome(File mavenHome) {
if (mavenHome == null) {
return false;
}
if ("WORKSPACE".equals(mavenHome.getPath()) || "EMBEDDED".equals(mavenHome.getPath())) {
return true;
}
return mavenHome.isDirectory();
}
private static List toClasspath(String string) throws LauncherException {
if (string == null) {
return null;
}
StringTokenizer st = new StringTokenizer(string, File.pathSeparator);
List classpath = new ArrayList<>();
while (st.hasMoreTokens()) {
try {
classpath.add(new File(st.nextToken()).toURI().toURL());
} catch (MalformedURLException e) {
throw new LauncherException("Invalid launcher classpath " + string, e);
}
}
return classpath;
}
private static Embedded3xLauncher createFromMavenHome0(File mavenHome, File classworldConf, List bootclasspath, List extensions, List args) throws LauncherException {
File configFile = MavenInstallationUtils.getClassworldsConf(mavenHome, classworldConf);
ClassLoader bootLoader = getBootLoader(mavenHome, bootclasspath);
ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(bootLoader);
try {
ClassworldsConfiguration config = new ClassworldsConfiguration();
ConfigurationParser configParser = new ConfigurationParser(config, System.getProperties());
try (InputStream is = new BufferedInputStream(new FileInputStream(configFile))) {
configParser.parse(is);
}
if (extensions != null && !extensions.isEmpty()) {
config.addEntries("plexus.core", extensions);
}
ByteArrayOutputStream buf = new ByteArrayOutputStream();
config.store(buf);
// Launcher launcher = new org.codehaus.plexus.classworlds.launcher.Launcher()
// launcher.configure(buf)
// ClassWorld classWorld = launcher.getWorld()
// MavenCli mavenCli = launcher.getMainClass().newInstance(classWorld)
Class launcherClass = bootLoader.loadClass("org.codehaus.plexus.classworlds.launcher.Launcher");
Object launcher = launcherClass.newInstance();
launcherClass.getMethod("configure", new Class[] {InputStream.class}).invoke(launcher, new ByteArrayInputStream(buf.toByteArray()));
Object classWorld = launcherClass.getMethod("getWorld").invoke(launcher);
Class cliClass = (Class) launcherClass.getMethod("getMainClass").invoke(launcher);
Object mavenCli = cliClass.getConstructor(classWorld.getClass()).newInstance(classWorld);
Method doMain = cliClass.getMethod("doMain", //
String[].class, String.class, PrintStream.class, PrintStream.class);
return new Embedded3xLauncher(mavenHome, classWorld, mavenCli, doMain, args);
} catch (ReflectiveOperationException | IOException | ClassWorldException | ConfigurationException e) {
throw new LauncherException("Invalid Maven home directory " + mavenHome, e);
} finally {
Thread.currentThread().setContextClassLoader(oldClassLoader);
}
}
private static ClassLoader getBootLoader(File mavenHome, List classpath) {
List urls = classpath;
if (urls == null) {
urls = new ArrayList();
File bootDir = new File(mavenHome, "boot");
addUrls(urls, bootDir);
}
if (urls.isEmpty()) {
throw new IllegalArgumentException("Invalid Maven home directory " + mavenHome);
}
URL[] ucp = urls.toArray(new URL[urls.size()]);
return new URLClassLoader(ucp, ClassLoader.getSystemClassLoader().getParent());
}
private static void addUrls(List urls, File directory) {
File[] jars = directory.listFiles();
if (jars != null) {
for (int i = 0; i < jars.length; i++) {
File jar = jars[i];
if (jar.getName().endsWith(".jar")) {
try {
urls.add(jar.toURI().toURL());
} catch (MalformedURLException e) {
throw (RuntimeException) new IllegalStateException().initCause(e);
}
}
}
}
}
@Override
public int run(String[] cliArgs, File multiModuleProjectDirectory, File workingDirectory, File logFile) throws IOException, LauncherException {
PrintStream out = (logFile != null) ? new PrintStream(new FileOutputStream(logFile)) : System.out;
try {
Properties originalProperties = copy(System.getProperties());
System.setProperties(null);
System.setProperty(SYSPROP_MAVEN_HOME, mavenHome.getAbsolutePath());
System.setProperty("user.dir", workingDirectory.getAbsolutePath());
System.setProperty("maven.multiModuleProjectDirectory", multiModuleProjectDirectory.getAbsolutePath());
ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(mavenCli.getClass().getClassLoader());
try {
Set origRealms = getRealmIds();
List args = new ArrayList<>(this.args);
args.addAll(Arrays.asList(cliArgs));
out.format("Maven Executor implementation: %s\n", getClass().getName());
out.format("Maven home: %s\n", mavenHome);
out.format("Build work directory: %s\n", workingDirectory);
out.format("Execution parameters: %s\n\n", args);
Object result = doMain.invoke(mavenCli, //
args.toArray(new String[args.size()]), workingDirectory.getAbsolutePath(), out, out);
Set realms = getRealmIds();
realms.removeAll(origRealms);
for (String realmId : realms) {
disposeRealm(realmId);
}
return ((Number) result).intValue();
} finally {
Thread.currentThread().setContextClassLoader(originalClassLoader);
System.setProperties(originalProperties);
}
} catch (IllegalAccessException e) {
throw new LauncherException("Failed to run Maven: " + e.getMessage(), e);
} catch (InvocationTargetException e) {
throw new LauncherException("Failed to run Maven: " + e.getMessage(), e);
} finally {
if (logFile != null) {
out.close();
}
}
}
private static Properties copy(Properties properties) {
Properties copy = new Properties();
for (String key : properties.stringPropertyNames()) {
copy.put(key, properties.getProperty(key));
}
return copy;
}
@Override
public String getMavenVersion() throws LauncherException {
try {
String version = MavenInstallationUtils.getMavenVersion(mavenCli.getClass());
if (version != null) {
return version;
}
} catch (IOException e) {
throw new LauncherException("Failed to read Maven version", e);
}
throw new LauncherException("Could not determine embedded Maven version");
}
private Set getRealmIds() {
Set result = new HashSet<>();
try {
Collection realms = (Collection) classWorld.getClass().getMethod("getRealms").invoke(classWorld);
for (Object realm : realms) {
String id = (String) realm.getClass().getMethod("getId").invoke(realm);
result.add(id);
}
} catch (RuntimeException | ReflectiveOperationException e) {
// best-effort, silently ignore failures
}
return result;
}
private void disposeRealm(String id) {
try {
classWorld.getClass().getMethod("disposeRealm", String.class).invoke(classWorld, id);
} catch (RuntimeException | ReflectiveOperationException e) {
// best-effort, silently ignore failures
}
}
}
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