001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  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 implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.xbean.kernel;
018    
019    /**
020     * This interface defines the interface used to monitor kernel events.  A KernelMonitor can be registered with the
021     * kernel using the {@link Kernel#addKernelMonitor(KernelMonitor)} method.
022     *
023     * @author Dain Sundstrom
024     * @version $Id$
025     * @since 2.0
026     */
027    public interface KernelMonitor {
028        /**
029         * An error occured with notifiying a service monitor.
030         *
031         * @param serviceMonitor the monitor that threw the exception
032         * @param serviceEvent the event that was being processed
033         * @param throwable the exception that was thrown
034         */
035        void serviceNotificationError(ServiceMonitor serviceMonitor, ServiceEvent serviceEvent, Throwable throwable);
036    }