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.logging.log4j.core.appender.rolling; 018 019import org.apache.logging.log4j.core.LogEvent; 020 021/** 022 * A <code>TriggeringPolicy</code> controls the conditions under which rollover 023 * occurs. Such conditions include time of day, file size, an 024 * external event, the log request or a combination thereof. 025 */ 026public interface TriggeringPolicy { 027 028 /** 029 * Initialize the Policy. 030 * @param manager The RollingFileManager. 031 */ 032 033 void initialize(final RollingFileManager manager); 034 035 /** 036 * Determines if a rollover may be appropriate at this time. If 037 * true is returned, RolloverPolicy.rollover will be called but it 038 * can determine that a rollover is not warranted. 039 * 040 * @param event A reference to the currently event. 041 * @return true if a rollover should occur. 042 */ 043 boolean isTriggeringEvent(final LogEvent event); 044}