/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, 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.ejb3.cache.simple;

import java.util.function.Consumer;
import java.util.function.Supplier;

import org.jboss.as.clustering.controller.CapabilityServiceConfigurator;
import org.jboss.as.ejb3.cache.Cache;
import org.jboss.as.ejb3.cache.CacheFactory;
import org.jboss.as.ejb3.cache.Identifiable;
import org.jboss.as.ejb3.cache.StatefulObjectFactory;
import org.jboss.as.ejb3.component.stateful.StatefulComponentDescription;
import org.jboss.as.server.ServerEnvironment;
import org.jboss.as.server.ServerEnvironmentService;
import org.jboss.msc.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.wildfly.clustering.ejb.PassivationListener;
import org.wildfly.clustering.service.ServiceSupplierDependency;
import org.wildfly.clustering.service.SimpleServiceNameProvider;
import org.wildfly.clustering.service.SupplierDependency;

/**
 * Service that provides a simple {@link CacheFactory}.
 *
 * @param <K> the cache key type
 * @param <V> the cache value type
 * @author Paul Ferraro
 */
public class SimpleCacheFactoryServiceConfigurator<K, V extends Identifiable<K>> extends SimpleServiceNameProvider implements CapabilityServiceConfigurator, CacheFactory<K, V> {

    private final StatefulComponentDescription componentDescription;
    private final SupplierDependency<ServerEnvironment> environment = new ServiceSupplierDependency<>(ServerEnvironmentService.SERVICE_NAME);

    public SimpleCacheFactoryServiceConfigurator(StatefulComponentDescription description) {
        super(description.getCacheFactoryServiceName());
        this.componentDescription = description;
    }

    @Override
    public ServiceBuilder<?> build(ServiceTarget target) {
        ServiceName name = this.getServiceName();
        ServiceBuilder<?> builder = target.addService(name);
        Consumer<CacheFactory<K, V>> factory = this.environment.register(builder).provides(name);
        Service service = Service.newInstance(factory, this);
        return builder.setInstance(service);
    }

    @Override
    public Cache<K, V> createCache(Supplier<K> identifierFactory, StatefulObjectFactory<V> factory, PassivationListener<V> passivationListener) {
        return new SimpleCache<>(factory, identifierFactory, this.componentDescription.getStatefulTimeout(), this.environment.get());
    }
}
