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
025/**
026 * A meta-annotation placed on annotation declarations that identifies
027 * them as linking together a <em>Kubernetes event selector</em> and a
028 * CDI event resulting from such a selection.
029 *
030 * <p>This meta-annotation is needed because two producer
031 * methods&mdash;one producing a list of, say, {@code ConfigMap}s
032 * matching criteria <em>X</em> and one producing a list of, say,
033 * {@code ConfigMap}s matching criteria <em>Y</em> are otherwise
034 * indistinguishable.</p>
035 *
036 * @author <a href="https://about.me/lairdnelson"
037 * target="_parent">Laird Nelson</a>
038 */
039@Documented
040@Retention(value = RetentionPolicy.RUNTIME)
041@Target({ ElementType.ANNOTATION_TYPE })
042public @interface KubernetesEventSelector {
043
044}