| /* |
| * 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.safeguard.impl.cdi; |
| |
| import org.apache.safeguard.api.SafeguardEnabled; |
| import org.eclipse.microprofile.faulttolerance.CircuitBreaker; |
| import org.eclipse.microprofile.faulttolerance.Retry; |
| import org.eclipse.microprofile.faulttolerance.Timeout; |
| |
| import javax.enterprise.event.Observes; |
| import javax.enterprise.inject.spi.AnnotatedConstructor; |
| import javax.enterprise.inject.spi.AnnotatedField; |
| import javax.enterprise.inject.spi.AnnotatedMethod; |
| import javax.enterprise.inject.spi.AnnotatedType; |
| import javax.enterprise.inject.spi.Extension; |
| import javax.enterprise.inject.spi.ProcessAnnotatedType; |
| import javax.enterprise.inject.spi.WithAnnotations; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| import java.util.Collections; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| import static org.apache.safeguard.api.SafeguardEnabled.INSTANCE; |
| |
| public class SafeguardExtension implements Extension { |
| public void findFaultTolerantBeans(@Observes @WithAnnotations({Retry.class, CircuitBreaker.class, Timeout.class}) |
| ProcessAnnotatedType<?> pat) { |
| if (!pat.getAnnotatedType().isAnnotationPresent(SafeguardEnabled.class)) { |
| pat.setAnnotatedType(new SafeguardAnnotatedTypeWrapper(pat.getAnnotatedType())); |
| } |
| } |
| |
| private static class SafeguardAnnotatedTypeWrapper<X> implements AnnotatedType<X> { |
| |
| private final AnnotatedType<X> delegate; |
| private final Set<Annotation> annotations; |
| |
| private SafeguardAnnotatedTypeWrapper(AnnotatedType<X> delegate) { |
| this.delegate = delegate; |
| Set<Annotation> annotations = delegate.getAnnotations(); |
| Set<Annotation> allAnotations = new LinkedHashSet<>(); |
| allAnotations.add(INSTANCE); |
| allAnotations.addAll(annotations); |
| this.annotations = allAnotations; |
| } |
| |
| @Override |
| public Class<X> getJavaClass() { |
| return delegate.getJavaClass(); |
| } |
| |
| @Override |
| public Set<AnnotatedConstructor<X>> getConstructors() { |
| return delegate.getConstructors(); |
| } |
| |
| @Override |
| public Set<AnnotatedMethod<? super X>> getMethods() { |
| return delegate.getMethods(); |
| } |
| |
| @Override |
| public Set<AnnotatedField<? super X>> getFields() { |
| return delegate.getFields(); |
| } |
| |
| @Override |
| public Type getBaseType() { |
| return delegate.getBaseType(); |
| } |
| |
| @Override |
| public Set<Type> getTypeClosure() { |
| return delegate.getTypeClosure(); |
| } |
| |
| @Override |
| public <T extends Annotation> T getAnnotation(Class<T> annotationType) { |
| return SafeguardEnabled.class.equals(annotationType) ? (T) INSTANCE : delegate.getAnnotation(annotationType); |
| } |
| |
| @Override |
| public Set<Annotation> getAnnotations() { |
| return Collections.unmodifiableSet(annotations); |
| } |
| |
| @Override |
| public boolean isAnnotationPresent(Class<? extends Annotation> annotationType) { |
| return SafeguardEnabled.class.equals(annotationType) || delegate.isAnnotationPresent(annotationType); |
| } |
| } |
| } |