| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.geronimo.microprofile.impl.health.cdi; |
| |
| import static java.util.stream.Collectors.toList; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Set; |
| |
| import javax.enterprise.context.spi.CreationalContext; |
| import javax.enterprise.event.Observes; |
| import javax.enterprise.inject.spi.AfterDeploymentValidation; |
| import javax.enterprise.inject.spi.Bean; |
| import javax.enterprise.inject.spi.BeanManager; |
| import javax.enterprise.inject.spi.BeforeShutdown; |
| import javax.enterprise.inject.spi.Extension; |
| import javax.enterprise.inject.spi.ProcessBean; |
| |
| import org.eclipse.microprofile.health.Health; |
| import org.eclipse.microprofile.health.HealthCheck; |
| |
| public class GeronimoHealthExtension implements Extension { |
| private final Collection<Bean<?>> beans = new ArrayList<>(); |
| private final Collection<CreationalContext<?>> contexts = new ArrayList<>(); |
| private List<HealthCheck> checks; |
| |
| void findChecks(@Observes final ProcessBean<?> bean) { |
| if (bean.getAnnotated().isAnnotationPresent(Health.class) && bean.getBean().getTypes().contains(HealthCheck.class)) { |
| beans.add(bean.getBean()); |
| } |
| } |
| |
| void start(@Observes final AfterDeploymentValidation afterDeploymentValidation, final BeanManager beanManager) { |
| checks = beans.stream() |
| .map(it -> lookup(it, beanManager)) |
| .collect(toList()); |
| } |
| |
| void stop(@Observes final BeforeShutdown beforeShutdown) { |
| final IllegalStateException ise = new IllegalStateException("Something went wrong releasing health checks"); |
| contexts.forEach(c -> { |
| try { |
| c.release(); |
| } catch (final RuntimeException re) { |
| ise.addSuppressed(re); |
| } |
| }); |
| final Throwable[] suppressed = ise.getSuppressed(); |
| if (suppressed.length == 1) { |
| throw RuntimeException.class.cast(suppressed[0]); |
| } else if (suppressed.length > 1) { |
| throw ise; |
| } |
| } |
| |
| public List<HealthCheck> getChecks() { |
| return checks; |
| } |
| |
| private HealthCheck lookup(final Bean<?> bean, final BeanManager manager) { |
| final Class<?> type = bean.getBeanClass() == null ? HealthCheck.class : bean.getBeanClass(); |
| final Set<Bean<?>> beans = manager.getBeans(type, bean.getQualifiers().toArray(new Annotation[bean.getQualifiers().size()])); |
| final Bean<?> resolvedBean = manager.resolve(beans); |
| final CreationalContext<Object> creationalContext = manager.createCreationalContext(null); |
| if (!manager.isNormalScope(resolvedBean.getScope())) { |
| contexts.add(creationalContext); |
| } |
| return HealthCheck.class.cast(manager.getReference(resolvedBean, HealthCheck.class, creationalContext)); |
| } |
| } |