    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 */
    017package org.apache.commons.pool2;
    018
    019/**
    020 * Pools that unavoidably swallow exceptions may be configured with an instance
    021 * of this listener so the user may receive notification of when this happens.
    022 * The listener should not throw an exception when called but pools calling
    023 * listeners should protect themselves against exceptions anyway.
    024 *
    025 * @since 2.0
    026 */
    027public interface SwallowedExceptionListener {
    028
    029    /**
    030     * Notifies this instance every time the implementation unavoidably swallows
    031     * an exception.
    032     *
    033     * @param e The exception that was swallowed
    034     */
    035    void onSwallowException(Exception e);
    036}