001/* -*- mode: Java; c-basic-offset: 2; indent-tabs-mode: nil; coding: utf-8-unix -*-
002 *
003 * Copyright © 2018 microBean.
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
014 * implied.  See the License for the specific language governing
015 * permissions and limitations under the License.
016 */
017package org.microbean.kubernetes.controller.cdi.annotation;
018
019import java.lang.annotation.Documented;
020import java.lang.annotation.ElementType;
021import java.lang.annotation.Retention;
022import java.lang.annotation.RetentionPolicy;
023import java.lang.annotation.Target;
024
025import java.util.Map; // for javadoc only
026
027import javax.enterprise.util.AnnotationLiteral;
028
029import javax.inject.Qualifier;
030
031import io.fabric8.kubernetes.api.model.HasMetadata; // for javadoc only
032
033/**
034 * A {@linkplain Qualifier qualifier annotation} that indicates that
035 * the annotated element—which as of this writing must be a
036 * {@link Map Map&lt;String, T&gt;}, where {@code <T>} is a type that
037 * extends {@link HasMetadata}&mdash;is to be used to cache Kubernetes
038 * resources.
039 *
040 * @author <a href="https://about.me/lairdnelson"
041 * target="_parent">Laird Nelson</a>
042 */
043@Documented
044@Qualifier
045@Retention(value = RetentionPolicy.RUNTIME)
046@Target({ ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.TYPE })
047public @interface KubernetesResourceCache {
048
049  public static final class Literal extends AnnotationLiteral<KubernetesResourceCache> implements KubernetesResourceCache {
050
051    private static final long serialVersionUID = 1L;
052    
053    public static final KubernetesResourceCache INSTANCE = new Literal();
054    
055  }
056  
057}