/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed 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 io.seata.saga.proctrl.eventing;

import java.util.List;

import io.seata.common.exception.FrameworkException;

/**
 * Event bus
 *
 * @author lorne.cl
 */
public interface EventBus<E> {

    /**
     * insert add element into bus
     *
     * @param e the event
     * @return is success
     * @throws FrameworkException the framework exception
     */
    boolean offer(E e) throws FrameworkException;

    /**
     * get event consumers
     *
     * @param clazz the event class
     * @return event consumer list
     */
    List<EventConsumer> getEventConsumers(Class<?> clazz);

    /**
     * register event consumer
     *
     * @param eventConsumer the event consumer
     */
    void registerEventConsumer(EventConsumer eventConsumer);
}