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/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.moduleservice;
import java.util.ArrayList;
import java.util.List;
import org.jboss.as.server.ServerMessages;
import org.jboss.as.server.Services;
import org.jboss.as.server.deployment.module.ModuleDependency;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleIdentifier;
import org.jboss.modules.ModuleLoadException;
import org.jboss.modules.ModuleNotFoundException;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceController.Mode;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import static org.jboss.as.server.ServerLogger.PRIVATE_DEP_LOGGER;
import static org.jboss.as.server.ServerLogger.UNSUPPORTED_DEP_LOGGER;
import static org.jboss.msc.service.ServiceBuilder.DependencyType.OPTIONAL;
import static org.jboss.msc.service.ServiceBuilder.DependencyType.REQUIRED;
/**
* Service that loads and re-links a module once all the modules dependencies are available.
*
* @author Stuart Douglas
*/
public class ModuleLoadService implements Service {
private final InjectedValue serviceModuleLoader = new InjectedValue();
private final InjectedValue moduleDefinitionInjectedValue = new InjectedValue();
private final List dependencies;
private volatile Module module;
private ModuleLoadService(final List dependencies) {
this.dependencies = dependencies;
}
@Override
public synchronized void start(StartContext context) throws StartException {
try {
final ServiceModuleLoader moduleLoader = serviceModuleLoader.getValue();
final Module module = moduleLoader.loadModule(moduleDefinitionInjectedValue.getValue().getModuleIdentifier());
moduleLoader.relinkModule(module);
for (ModuleDependency dependency : dependencies) {
if (dependency.isUserSpecified()) {
final ModuleIdentifier id = dependency.getIdentifier();
try {
String val = moduleLoader.loadModule(id).getProperty("jboss.api");
if (val != null) {
if (val.equals("private")) {
PRIVATE_DEP_LOGGER.privateApiUsed(moduleDefinitionInjectedValue.getValue().getModuleIdentifier().getName(), id);
} else if (val.equals("unsupported")) {
UNSUPPORTED_DEP_LOGGER.unsupportedApiUsed(moduleDefinitionInjectedValue.getValue().getModuleIdentifier().getName(), id);
}
}
} catch (ModuleNotFoundException ignore) {
//can happen with optional dependencies
}
}
}
this.module = module;
} catch (ModuleLoadException e) {
throw ServerMessages.MESSAGES.failedToLoadModule(moduleDefinitionInjectedValue.getValue().getModuleIdentifier(), e);
}
}
@Override
public synchronized void stop(StopContext context) {
// we don't actually unload the module, that is taken care of by the service module loader
module = null;
}
@Override
public Module getValue() throws IllegalStateException, IllegalArgumentException {
return module;
}
public static ServiceName install(final ServiceTarget target, final ModuleIdentifier identifier, final List dependencies) {
final ModuleLoadService service = new ModuleLoadService(dependencies);
final ServiceName serviceName = ServiceModuleLoader.moduleServiceName(identifier);
final ServiceBuilder builder = target.addService(serviceName, service);
builder.addDependency(Services.JBOSS_SERVICE_MODULE_LOADER, ServiceModuleLoader.class, service.getServiceModuleLoader());
builder.addDependency(ServiceModuleLoader.moduleSpecServiceName(identifier), ModuleDefinition.class, service.getModuleDefinitionInjectedValue());
builder.addDependency(ServiceModuleLoader.moduleResolvedServiceName(identifier)); //don't attempt to load until all dependent module specs are up, even transitive ones
for (ModuleDependency dependency : dependencies) {
final ModuleIdentifier moduleIdentifier = dependency.getIdentifier();
if (moduleIdentifier.getName().startsWith(ServiceModuleLoader.MODULE_PREFIX)) {
builder.addDependency(dependency.isOptional() ? OPTIONAL : REQUIRED, ServiceModuleLoader.moduleSpecServiceName(moduleIdentifier));
}
}
builder.setInitialMode(Mode.ON_DEMAND);
builder.install();
return serviceName;
}
public static ServiceName installService(final ServiceTarget target, final ModuleIdentifier identifier, final List identifiers) {
final ArrayList dependencies = new ArrayList(identifiers.size());
for (final ModuleIdentifier i : identifiers) {
dependencies.add(new ModuleDependency(null, i, false, false, false, false));
}
return install(target, identifier, dependencies);
}
public InjectedValue getServiceModuleLoader() {
return serviceModuleLoader;
}
public InjectedValue getModuleDefinitionInjectedValue() {
return moduleDefinitionInjectedValue;
}
}
