ipojo/runtime/core/src/main/java/org/apache/felix/ipojo/extender/queue/debug/QueueEventProxy.java

/*
 * 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.felix.ipojo.extender.queue.debug;

import org.apache.felix.ipojo.extender.queue.QueueListener;

/**
 * This service record events from a {@link org.apache.felix.ipojo.extender.queue.QueueService}.
 * When a listener is added, all recorded events are replayed into the listener.
 */
public interface QueueEventProxy {
    /**
     * Add a {@link org.apache.felix.ipojo.extender.queue.QueueListener} that will be notified on events
     * relative to the observed {@link org.apache.felix.ipojo.extender.queue.QueueService}.
     * @param listener added listener
     */
    void addQueueListener(QueueListener listener);

    /**
     * Remove a {@link QueueListener} from the observed {@link org.apache.felix.ipojo.extender.queue.QueueService}.
     * @param listener removed listener
     */
    void removeQueueListener(QueueListener listener);

}