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/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, 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.as.server.controller.resources;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.CORE_SERVICE;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.MODULE;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.MODULE_LOADING;
import java.io.File;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.List;
import org.jboss.as.controller.AbstractRuntimeOnlyHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.ModelVersion;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationDefinition;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.SimpleListAttributeDefinition;
import org.jboss.as.controller.SimpleOperationDefinitionBuilder;
import org.jboss.as.controller.SimpleResourceDefinition;
import org.jboss.as.controller.access.management.AccessConstraintDefinition;
import org.jboss.as.controller.access.management.SensitiveTargetAccessConstraintDefinition;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.server.controller.descriptions.ServerDescriptions;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.jboss.modules.LocalModuleFinder;
import org.jboss.modules.LocalModuleLoader;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleClassLoader;
import org.jboss.modules.ModuleIdentifier;
import org.jboss.modules.ModuleLoadException;
import org.jboss.modules.ModuleLoader;
import org.jboss.modules.NativeLibraryResourceLoader;
import org.jboss.modules.ResourceLoader;
import org.jboss.modules.ResourceLoaderSpec;
/**
* Definition of the core-service=module-loading resource.
*
* @author Brian Stansberry (c) 2012 Red Hat Inc.
*/
public class ModuleLoadingResourceDefinition extends SimpleResourceDefinition {
private static final AttributeDefinition MODULE_NAME = new SimpleAttributeDefinitionBuilder(MODULE, ModelType.STRING).build();
private final List accessConstraints;
public ModuleLoadingResourceDefinition() {
super(PathElement.pathElement(CORE_SERVICE, MODULE_LOADING),
ServerDescriptions.getResourceDescriptionResolver("core", MODULE_LOADING));
this.accessConstraints = SensitiveTargetAccessConstraintDefinition.MODULE_LOADING.wrapAsList();
}
@Override
public void registerAttributes(ManagementResourceRegistration resourceRegistration) {
AttributeDefinition ad = SimpleListAttributeDefinition.Builder.of("module-roots",
new SimpleAttributeDefinitionBuilder("module-root", ModelType.STRING).build())
.setStorageRuntime()
.setDeprecated(ModelVersion.create(1, 4, 0))
.build();
resourceRegistration.registerReadOnlyAttribute(ad, new ListModuleRootsHandler());
}
@Override
public void registerOperations(ManagementResourceRegistration resourceRegistration) {
super.registerOperations(resourceRegistration);
final OperationDefinition definition = new SimpleOperationDefinitionBuilder("list-resource-loader-paths", getResourceDescriptionResolver())
.addParameter(MODULE_NAME)
.setRuntimeOnly()
.setReplyType(ModelType.LIST)
.setReplyValueType(ModelType.STRING)
.setDeprecated(ModelVersion.create(1, 4, 0))
.setReadOnly()
.build();
resourceRegistration.registerOperationHandler(definition, new ModuleLocationHandler());
}
@Override
public List getAccessConstraints() {
return accessConstraints;
}
/** Read attribute handler for "module-roots" */
private static class ListModuleRootsHandler extends AbstractRuntimeOnlyHandler {
@Override
protected boolean resourceMustExist(OperationContext context, ModelNode operation) {
return false;
}
@Override
protected void executeRuntimeStep(OperationContext context, ModelNode operation) throws OperationFailedException {
final ModelNode list = context.getResult().setEmptyList();
try {
AccessController.doPrivileged(new PrivilegedExceptionAction() {
@Override
public Void run() throws Exception {
storeRepoRoots(list);
return null;
}
});
} catch (PrivilegedActionException e) {
throw new IllegalStateException(e.getCause());
}
context.stepCompleted();
}
private static void storeRepoRoots(final ModelNode list) throws NoSuchFieldException, IllegalAccessException {
// TODO get a formal API from jboss-modules to replace this reflection
ModuleLoader loader = Module.getBootModuleLoader();
if (loader instanceof LocalModuleLoader) {
LocalModuleLoader lml = (LocalModuleLoader) loader;
Field findersField = ModuleLoader.class.getDeclaredField("finders");
Field repoRootsField = null;
findersField.setAccessible(true);
try {
Object[] finders = (Object[]) findersField.get(lml);
if (finders.length > 0 && finders[0] instanceof LocalModuleFinder) {
LocalModuleFinder lmf = (LocalModuleFinder) finders[0];
repoRootsField = LocalModuleFinder.class.getDeclaredField("repoRoots") ;
repoRootsField.setAccessible(true);
File[] repoRoots = (File[]) repoRootsField.get(lmf);
for (File file : repoRoots) {
list.add(file.getAbsolutePath());
}
}
} finally {
findersField.setAccessible(false);
if (repoRootsField != null) {
repoRootsField.setAccessible(false);
}
}
}
}
}
/** Handler for the "list-resource-loader-paths" operation */
private static final class ModuleLocationHandler implements OperationStepHandler {
/** {@inheritDoc} */
@Override
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
context.addStep(new OperationStepHandler() {
@Override
public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
final String moduleName = MODULE_NAME.resolveModelAttribute(context, operation).asString();
try {
List paths = AccessController.doPrivileged(new PrivilegedExceptionAction>() {
@Override
public List run() throws Exception {
return findResourcePaths(moduleName);
}
});
ModelNode list = context.getResult().setEmptyList();
for (String path : paths) {
list.add(path);
}
} catch (PrivilegedActionException e) {
throw new OperationFailedException(e.getCause());
}
context.stepCompleted();
}
}, OperationContext.Stage.RUNTIME);
context.stepCompleted();
}
}
private static List findResourcePaths(String moduleName) throws ModuleLoadException, NoSuchFieldException, IllegalAccessException {
// TODO get a formal API from jboss-modules to replace this reflection
List result = new ArrayList();
Module module = Module.getModuleFromCallerModuleLoader(ModuleIdentifier.fromString(moduleName));
ModuleClassLoader mcl = module.getClassLoader();
Field pathsField = ModuleClassLoader.class.getDeclaredField("paths");
Field sourceListField = null;
Field resourceLoaderField = null;
pathsField.setAccessible(true);
try {
Object paths = pathsField.get(mcl);
sourceListField = paths.getClass().getDeclaredField("sourceList");
sourceListField.setAccessible(true);
Object[] resourceLoaderSpecs = (Object[]) sourceListField.get(paths);
resourceLoaderField = ResourceLoaderSpec.class.getDeclaredField("resourceLoader");
resourceLoaderField.setAccessible(true);
for (Object resourceLoaderSpec : resourceLoaderSpecs) {
ResourceLoader resourceLoader = (ResourceLoader) resourceLoaderField.get(resourceLoaderSpec);
String path = getResourceLoaderPath(resourceLoader);
if (path != null) {
result.add(path);
}
}
return result;
} finally {
pathsField.setAccessible(false);
if (sourceListField != null) {
sourceListField.setAccessible(false);
}
if (resourceLoaderField != null) {
resourceLoaderField.setAccessible(false);
}
}
}
private static String getResourceLoaderPath(ResourceLoader resourceLoader) throws NoSuchFieldException, IllegalAccessException {
if (resourceLoader instanceof NativeLibraryResourceLoader) {
return ((NativeLibraryResourceLoader) resourceLoader).getRoot().getAbsolutePath();
} else if (isInstanceOf(resourceLoader, "org.jboss.modules.JarFileResourceLoader")) {
Field fileOfJarField = resourceLoader.getClass().getDeclaredField("fileOfJar");
fileOfJarField.setAccessible(true);
try {
File fileOfJar = (File) fileOfJarField.get(resourceLoader);
return fileOfJar.getAbsolutePath();
} finally {
fileOfJarField.setAccessible(false);
}
} else if (isInstanceOf(resourceLoader, "org.jboss.modules.FilteredResourceLoader")) {
Field loaderField = resourceLoader.getClass().getDeclaredField("loader");
loaderField.setAccessible(true);
try {
ResourceLoader loader = (ResourceLoader) loaderField.get(resourceLoader);
return getResourceLoaderPath(loader);
} finally {
loaderField.setAccessible(false);
}
}
return null;
}
private static boolean isInstanceOf(Object obj, String className) {
Class clazz = obj.getClass();
while (clazz != null) {
if (clazz.getCanonicalName().equals(className)) {
return true;
}
clazz = clazz.getSuperclass();
}
return false;
}
}
