/*
* JBoss, Home of Professional Open Source.
* Copyright 2016, 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.clustering.controller;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.server.Services;
import org.jboss.dmr.ModelNode;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleLoadException;
import org.jboss.modules.ModuleLoader;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceController;
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 org.wildfly.clustering.service.Builder;
/**
* @author Paul Ferraro
*/
public class ModuleBuilder implements ResourceServiceBuilder<Module>, Service<Module> {
private final InjectedValue<ModuleLoader> loader = new InjectedValue<>();
private final ServiceName name;
private final Attribute attribute;
private volatile String identifier;
private volatile Module module;
public ModuleBuilder(ServiceName name, Attribute attribute) {
this.name = name;
this.attribute = attribute;
}
@Override
public ServiceName getServiceName() {
return this.name;
}
@Override
public ServiceBuilder<Module> build(ServiceTarget target) {
return target.addService(this.name, this)
.addDependency(Services.JBOSS_SERVICE_MODULE_LOADER, ModuleLoader.class, this.loader)
.setInitialMode(ServiceController.Mode.PASSIVE)
;
}
@Override
public Builder<Module> configure(OperationContext context, ModelNode model) throws OperationFailedException {
this.identifier = this.attribute.resolveModelAttribute(context, model).asString();
return this;
}
@Override
public void start(StartContext context) throws StartException {
try {
this.module = this.loader.getValue().loadModule(this.identifier);
} catch (ModuleLoadException e) {
throw new StartException(e);
}
}
@Override
public void stop(StopContext context) {
this.module = null;
}
@Override
public Module getValue() {
return this.module;
}
}