/**
* Copyright 2015-2016 Red Hat, Inc, and individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.swarm.container.runtime.cdi.configurable;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.AfterBeanDiscovery;
import javax.enterprise.inject.spi.AnnotatedField;
import javax.enterprise.inject.spi.AnnotatedType;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.Extension;
import javax.enterprise.inject.spi.ProcessInjectionTarget;
import javax.inject.Singleton;
import org.jboss.weld.literal.DefaultLiteral;
import org.wildfly.swarm.bootstrap.performance.Performance;
import org.wildfly.swarm.container.runtime.ConfigurableManager;
import org.wildfly.swarm.spi.api.ArchiveMetadataProcessor;
import org.wildfly.swarm.spi.api.ArchivePreparer;
import org.wildfly.swarm.spi.api.Customizer;
import org.wildfly.swarm.spi.api.annotations.Configurable;
import org.wildfly.swarm.spi.api.cdi.CommonBean;
import org.wildfly.swarm.spi.api.cdi.CommonBeanBuilder;
/**
* @author Ken Finnigan
*/
public class ConfigurableExtension implements Extension {
private final ConfigurableManager configurableManager;
// Short-cut for-sure expect these to be Configurable owners.
private static final Set<Class<?>> APPLICABLE_CLASSES = new HashSet<Class<?>>() {{
add(Customizer.class);
add(ArchivePreparer.class);
add(ArchiveMetadataProcessor.class);
}};
public ConfigurableExtension(ConfigurableManager configurableManager) {
this.configurableManager = configurableManager;
}
@SuppressWarnings("unused")
<T> void processInjectionTarget(@Observes ProcessInjectionTarget<T> pit, BeanManager beanManager) throws Exception {
try (AutoCloseable handle = Performance.accumulate("ConfigurationExtension.processInjectionTarget")) {
if (isApplicable(pit.getAnnotatedType())) {
pit.setInjectionTarget(new ConfigurableInjectionTarget<T>(pit.getInjectionTarget(), this.configurableManager));
}
}
}
private static <T> boolean isApplicable(AnnotatedType<T> at) {
if (isApplicable(at.getJavaClass())) {
return true;
}
Set<AnnotatedField<? super T>> fields = at.getFields();
for (AnnotatedField<? super T> field : fields) {
if (field.isAnnotationPresent(Configurable.class)) {
return true;
}
}
return false;
}
private static boolean isApplicable(Class<?> cls) {
for (Class<?> each : APPLICABLE_CLASSES) {
if (each.isAssignableFrom(cls)) {
return true;
}
}
return false;
}
@SuppressWarnings({"unused"})
void afterBeanDiscovery(@Observes AfterBeanDiscovery abd) throws Exception {
try (AutoCloseable handle = Performance.time("ConfigurationExtension.afterBeanDiscovery")) {
CommonBean<ConfigurableManager> configurableManagerBean = CommonBeanBuilder.newBuilder(ConfigurableManager.class)
.beanClass(ConfigurableManager.class)
.scope(Singleton.class)
.addQualifier(DefaultLiteral.INSTANCE)
.createSupplier(() -> configurableManager)
.addType(ConfigurableManager.class)
.addType(Object.class).build();
abd.addBean(configurableManagerBean);
}
}
}