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/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.modules;
import org.jboss.modules.filter.PathFilters;
import java.io.File;
import java.security.AccessController;
import java.util.jar.JarFile;
/**
* Date: 06.05.2011
*
* @author James R. Perkins
*/
final class ClassPathModuleLoader extends ModuleLoader {
private static final String[] NO_STRINGS = new String[0];
private final ModuleLoader delegateLoader;
private final String classPath;
private final String dependencies;
private final String mainClass;
ClassPathModuleLoader(final ModuleLoader delegateLoader, final String mainClass, String classPath, final String dependencies) {
this.delegateLoader = delegateLoader;
this.dependencies = dependencies;
if (isEmpty(classPath)) {
classPath = System.getenv().get("CLASSPATH");
}
this.classPath = classPath;
AccessController.doPrivileged(new PropertyWriteAction("java.class.path", classPath));
this.mainClass = mainClass;
}
private static boolean isEmpty(final String classPath) {
return classPath == null || classPath.isEmpty();
}
@Override
protected Module preloadModule(final ModuleIdentifier identifier) throws ModuleLoadException {
if (identifier.equals(ModuleIdentifier.CLASSPATH)) {
return loadModuleLocal(identifier);
} else if (delegateLoader != null) {
return preloadModule(identifier, delegateLoader);
} else {
return null;
}
}
@Override
protected ModuleSpec findModule(final ModuleIdentifier moduleIdentifier) throws ModuleLoadException {
ModuleSpec.Builder builder = ModuleSpec.build(moduleIdentifier);
builder.setMainClass(mainClass);
// Process the classpath
addClassPath(builder, classPath);
// Add the dependencies
final String[] dependencyEntries = (dependencies == null ? NO_STRINGS : dependencies.split(","));
for (String dependencyEntry : dependencyEntries) {
dependencyEntry = dependencyEntry.trim();
if (! dependencyEntry.isEmpty()) {
final ModuleIdentifier depModId = ModuleIdentifier.fromString(dependencyEntry);
final DependencySpec spec = DependencySpec.createModuleDependencySpec(
PathFilters.getMetaInfSubdirectoriesWithoutMetaInfFilter(),
PathFilters.rejectAll(),
delegateLoader,
depModId,
false);
builder.addDependency(spec);
}
}
builder.addDependency(DependencySpec.createSystemDependencySpec(JDKPaths.JDK));
builder.addDependency(DependencySpec.createLocalDependencySpec());
return builder.create();
}
@Override
public String toString() {
return "Class path module loader for path '" + classPath + "'";
}
/**
* Adds the class path entries as dependencies on the builder.
*
* @param builder the builder to add the dependency entries to.
* @param classPath the class path to process
*
* @throws ModuleLoadException if the class path entry is not found or the entry is a directory.
*/
private void addClassPath(final ModuleSpec.Builder builder, final String classPath) throws ModuleLoadException {
String[] classPathEntries = (classPath == null ? NO_STRINGS : classPath.split(File.pathSeparator));
final File workingDir = new File(System.getProperty("user.dir"));
for (String entry : classPathEntries) {
if (!entry.isEmpty()) {
try {
// Find the directory
File root = new File(entry);
if (! root.isAbsolute()) {
root = new File(workingDir, root.getPath());
}
if (root.isFile()) {
try {
builder.addResourceRoot(ResourceLoaderSpec.createResourceLoaderSpec(ResourceLoaders.createJarResourceLoader(root.getParent(), new JarFile(root, true))));
} catch (Exception e) {
Module.log.trace(e, "Resource %s does not appear to be a valid JAR. Loaded as file resource.", root);
builder.addResourceRoot(ResourceLoaderSpec.createResourceLoaderSpec(ResourceLoaders.createFileResourceLoader(entry, root)));
}
} else {
builder.addResourceRoot(ResourceLoaderSpec.createResourceLoaderSpec(ResourceLoaders.createFileResourceLoader(entry, root)));
}
} catch (Exception e) {
throw new ModuleLoadException(String.format("File %s in class path not valid.", entry), e);
}
}
}
}
}
