/*
    * 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.logging.log4j.core.appender.rolling;
  
  import org.apache.logging.log4j.core.Core;
  import org.apache.logging.log4j.core.LogEvent;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   *
   */
  @Plugin(name = "SizeBasedTriggeringPolicy", category = Core.CATEGORY_NAME, printObject = true)
  public class SizeBasedTriggeringPolicy extends AbstractTriggeringPolicy {
  
      /**
       * Rollover threshold size in bytes.
       */
      private static final long MAX_FILE_SIZE = 10 * 1024 * 1024; // let 10 MB the default max size
  
      private final long maxFileSize;
  
      private RollingFileManager manager;
  
      /**
       * Constructs a new instance.
       */
      protected SizeBasedTriggeringPolicy() {
          this.maxFileSize = MAX_FILE_SIZE;
      }
  
      /**
       * Constructs a new instance.
       *
       * @param maxFileSize rollover threshold size in bytes.
       */
      protected SizeBasedTriggeringPolicy(final long maxFileSize) {
          this.maxFileSize = maxFileSize;
      }
  
      public long getMaxFileSize() {
          return maxFileSize;
      }
  
      /**
       * Initialize the TriggeringPolicy.
       * @param aManager The RollingFileManager.
       */
      @Override
      public void initialize(final RollingFileManager aManager) {
          this.manager = aManager;
      }
  
  
      /**
       * Returns true if a rollover should occur.
       * @param event   A reference to the currently event.
       * @return true if a rollover should take place, false otherwise.
       */
      @Override
      public boolean isTriggeringEvent(final LogEvent event) {
          final boolean triggered = manager.getFileSize() > maxFileSize;
          if (triggered) {
              manager.getPatternProcessor().updateTime();
          }
          return triggered;
      }
  
      @Override
      public String toString() {
          return "SizeBasedTriggeringPolicy(size=" + maxFileSize + ')';
      }
  
      /**
       * Create a SizeBasedTriggeringPolicy.
       * @param size The size of the file before rollover is required.
       * @return A SizeBasedTriggeringPolicy.
       */
      @PluginFactory
      public static SizeBasedTriggeringPolicy createPolicy(@PluginAttribute("size") final String size) {
  
          final long maxSize = size == null ? MAX_FILE_SIZE : FileSize.parse(size, MAX_FILE_SIZE);
          return new SizeBasedTriggeringPolicy(maxSize);
      }
 
 }