org.apache.tuscany.sca.launcher.LauncherMain Maven / Gradle / Ivy
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* 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.
*/
package org.apache.tuscany.sca.launcher;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FilenameFilter;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
public class LauncherMain {
private static final String DEFAULT_PROPERTY_FILENAME = "default.config";
private static final String CONFIG_CLASSPATH = "classpath";
private static final String CONFIG_MAIN_CLASS = "mainClass";
private static final String CONFIG_ARG_JAR_MAIN = "[firstArgJarManifestMainClass]";
private static final String LAUNCHER_ARGS = "launcherArgs";
public static void main(String[] args) throws SecurityException, IllegalArgumentException, ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException, URISyntaxException, IOException {
Properties launcherProperties = getLauncherProperties(args);
setSystemProperties(launcherProperties);
ClassLoader classLoader = getClassLoader(launcherProperties);
String mainClassName = getMainClass(launcherProperties, classLoader);
String[] mainArgs = getMainArgs(launcherProperties);
invokeMainMethod(mainClassName, classLoader, mainArgs);
}
private static void setSystemProperties(Properties launcherProperties) throws URISyntaxException {
for (Enumeration e = launcherProperties.propertyNames(); e.hasMoreElements();) {
String pn = (String) e.nextElement();
if (pn.startsWith("-D")) {
System.setProperty(pn.substring(2), keywordExpand(launcherProperties.getProperty(pn)));
}
}
}
private static String keywordExpand(String property) throws URISyntaxException {
if (property.contains("{TUSCANY_HOME}")) {
property = property.replace("{TUSCANY_HOME}", getLauncherFolder().getParentFile().getAbsolutePath());
}
return property;
}
private static String[] getMainArgs(Properties launcherProperties) {
String[] mainArgs = (String[])launcherProperties.get(LAUNCHER_ARGS);
if (mainArgs == null) {
mainArgs = new String[0];
}
return mainArgs;
}
private static String getMainClass(Properties launcherProperties, ClassLoader classLoader) {
String mainClassName;
String[] args = getMainArgs(launcherProperties);
if (args.length > 0) {
try {
Class.forName(args[0], true, classLoader);
mainClassName = args[0];
String[] args2 = new String[args.length-1];
System.arraycopy(args, 1, args2, 0, args.length-1);
launcherProperties.put(LAUNCHER_ARGS, args2);
} catch (ClassNotFoundException e) {
mainClassName = launcherProperties.getProperty(CONFIG_MAIN_CLASS);
}
} else {
mainClassName = launcherProperties.getProperty(CONFIG_MAIN_CLASS);
}
if (mainClassName.startsWith(CONFIG_ARG_JAR_MAIN + "|")) {
mainClassName = mainClassName.substring(CONFIG_ARG_JAR_MAIN.length()+1);
}
return mainClassName;
}
private static void invokeMainMethod(String className, ClassLoader classLoader, String[] args) throws ClassNotFoundException, SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(classLoader);
Class mainClass = Class.forName(className, true, classLoader);
Method m = mainClass.getMethod("main", new Class[]{ args.getClass() });
m.invoke(null, new Object[]{args});
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
}
private static ClassLoader getClassLoader(Properties launcherProperties) throws URISyntaxException, IOException {
Set jarURLs = new HashSet();
for (Enumeration e = launcherProperties.propertyNames(); e.hasMoreElements();) {
String pn = (String) e.nextElement();
if (pn.startsWith(CONFIG_CLASSPATH)) {
jarURLs.addAll(getJARs(launcherProperties.getProperty(pn), launcherProperties));
} else if (pn.equals(CONFIG_MAIN_CLASS) && launcherProperties.getProperty(pn).startsWith(CONFIG_ARG_JAR_MAIN)) {
if (firstArgJarHasManifestMainClass(launcherProperties)) {
jarURLs.add(firstArgJarManifestMainClass(launcherProperties));
}
}
}
ClassLoader parentCL = Thread.currentThread().getContextClassLoader();
if (parentCL == null) {
parentCL = LauncherMain.class.getClassLoader();
}
return new URLClassLoader(jarURLs.toArray(new URL[]{}), parentCL);
}
private static void argJars(Set jarURLs, Properties launcherProperties) throws IOException {
String[] args = (String[])launcherProperties.get(LAUNCHER_ARGS);
if (args != null && args.length > 0) {
for (String a : args) {
File f = new File(a);
if (!f.exists()) {
throw new FileNotFoundException(args[0]);
}
jarURLs.add(f.toURI().toURL());
}
}
launcherProperties.put(LAUNCHER_ARGS, new String[]{});
}
private static URL firstArgJarManifestMainClass(Properties launcherProperties) throws IOException {
String[] args = (String[])launcherProperties.get(LAUNCHER_ARGS);
if (args.length < 1) {
throw new IllegalArgumentException("must specifiy a jar file");
}
File f = new File(args[0]);
if (!f.exists()) {
throw new FileNotFoundException(args[0]);
}
JarFile jar = new JarFile(f);
String mfc = jar.getManifest().getMainAttributes().getValue("Main-Class");
if (mfc == null || mfc.length() < 1) {
throw new IllegalArgumentException("first jar file missing manifest Main-Class attribute");
}
launcherProperties.setProperty(CONFIG_MAIN_CLASS, mfc);
return f.toURL();
}
private static boolean firstArgJarHasManifestMainClass(Properties launcherProperties) throws IOException {
String[] args = (String[])launcherProperties.get(LAUNCHER_ARGS);
if (args.length < 1) {
return false;
}
File f = new File(args[0]);
if (!f.exists() || f.isDirectory()) {
return false;
}
JarFile jar = new JarFile(f);
Manifest mf = jar.getManifest();
if (mf != null) {
String mfc = jar.getManifest().getMainAttributes().getValue("Main-Class");
return mfc != null && mfc.length() > 0;
} else {
return false;
}
}
/**
* Gets the jars matching a config classpath property
* property values may be an explicit jar name or use an asterix wildcard for
* all jars in a folder, or a double asterix '**' for all jars in a folder and its subfolders
* @throws URISyntaxException
*/
private static Set getJARs(String classpathValue, Properties launcherProperties) throws URISyntaxException {
Set jarURLs = new HashSet();
if (classpathValue.endsWith("**")) {
File folder = new File(classpathValue.substring(0, classpathValue.length()-2));
if (!folder.isAbsolute()) {
folder = new File(getLauncherFolder().getParent(), folder.getName());
}
jarURLs.addAll(getFolderJars(folder));
jarURLs.addAll(getSubFolderJars(folder));
} else if (classpathValue.endsWith("*")) {
File folder = new File(classpathValue.substring(0, classpathValue.length()-1));
if (!folder.isAbsolute()) {
folder = new File(getLauncherFolder(), folder.getName());
}
jarURLs.addAll(getFolderJars(folder));
} else {
File f = new File(classpathValue);
if (!f.isAbsolute()) {
f = new File(getLauncherFolder(), classpathValue);
}
try {
jarURLs.add(f.toURI().toURL());
} catch (MalformedURLException e) {
throw new RuntimeException("Exception getting JAR URL", e);
}
}
return jarURLs;
}
/**
* Gets all the jars in a folder
*/
private static Set getFolderJars(File folder) {
Set jarURLs = new HashSet();
if (folder.exists() && folder.isDirectory()) {
File[] files = folder.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name) {
return name.endsWith(".jar");
}});
for (File f : files) {
try {
jarURLs.add(f.toURI().toURL());
} catch (MalformedURLException e) {
throw new RuntimeException("Exception getting JAR URL", e);
}
}
}
return jarURLs;
}
/**
* Recursively gets all the jars in a folder and its subfolders
*/
private static Set getSubFolderJars(File folder) {
Set jarURLs = new HashSet();
if (folder.exists() && folder.isDirectory()) {
File[] files = folder.listFiles(new FileFilter(){
public boolean accept(File pathname) {
return pathname.isDirectory();
}});
for (File f : files) {
jarURLs.addAll(getFolderJars(f));
jarURLs.addAll(getSubFolderJars(f));
}
}
return jarURLs;
}
/**
* Read the config properties for this launcher invocation
* (Either default.config or the 1st cmd line argument suffixed with ".config" if that file exists
*/
private static Properties getLauncherProperties(String[] args) throws URISyntaxException, FileNotFoundException {
Properties properties = new Properties();
File f;
if (args.length > 0) {
f = new File(getLauncherFolder(), args[0] + ".config");
if (f.exists()) {
String[] args2 = new String[args.length-1];
System.arraycopy(args, 1, args2, 0, args.length-1);
args = args2;
} else {
f = new File(getLauncherFolder(), DEFAULT_PROPERTY_FILENAME);
}
} else {
f = new File(getLauncherFolder(), DEFAULT_PROPERTY_FILENAME);
}
if (!f.exists()) {
// throw new FileNotFoundException(f.getName());
if (args.length > 0 && "client".equals(args[0])) {
properties.put("mainClass", "org.apache.tuscany.sca.client.javascript.TuscanyShell");
String[] args2 = new String[args.length-1];
System.arraycopy(args, 1, args2, 0, args.length-1);
args = args2;
} else {
properties.put("mainClass", "[firstArgJarManifestMainClass]|org.apache.tuscany.sca.domain.node.DomainNodeMain");
}
} else {
try {
FileInputStream fis = new FileInputStream(f);
properties.load(fis);
fis.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
properties.put(LAUNCHER_ARGS, args);
return properties;
}
/**
* Find the folder that contains the launcher jar
*/
private static File getLauncherFolder() throws URISyntaxException {
File folder = null;
String resource = LauncherMain.class.getName().replace('.', '/') + ".class";
URL url = LauncherMain.class.getClassLoader().getResource(resource);
if (url != null) {
URI uri = url.toURI();
String scheme = uri.getScheme();
if (uri.getScheme().equals("jar")) {
String path = uri.toString().substring(4);
int i = path.indexOf("!/");
if (i != -1) {
path = path.substring(0, i);
uri = URI.create(path);
}
File file = new File(uri);
if (file.exists()) {
File jarDirectory = file.getParentFile();
if (jarDirectory != null && jarDirectory.exists()) {
folder = file;
}
}
}
}
folder = folder.getParentFile();
return folder;
}
}