001// --------------------------------------------------------------------------------
002// Copyright 2002-2024 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.model.control.core.server.eventbus;
018
019import com.google.common.eventbus.EventBus;
020import io.github.classgraph.ClassGraph;
021import java.lang.reflect.InvocationTargetException;
022
023public class SentEventEventBus {
024
025    public static EventBus eventBus;
026
027    static {
028        eventBus = new EventBus();
029
030        try(var scanResult = new ClassGraph()
031                .enableAnnotationInfo()
032                .scan()) {
033            final var sentEventSubscriberClasses = scanResult
034                    .getClassesWithAnnotation(SentEventSubscriber.class.getName());
035
036            for(var sentEventSubscriberClass : sentEventSubscriberClasses) {
037                var clazz = sentEventSubscriberClass.loadClass();
038                var constructor = clazz.getDeclaredConstructor();
039
040                eventBus.register(constructor.newInstance());
041            }
042        } catch(InvocationTargetException | IllegalAccessException | NoSuchMethodException | InstantiationException e) {
043            throw new RuntimeException(e);
044        }
045    }
046
047}