/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.rolling;
  
  import java.io.File;
  
  import ch.qos.logback.core.util.Duration;
  import ch.qos.logback.core.util.FileSize;
  import ch.qos.logback.core.util.DefaultInvocationGate;
  import ch.qos.logback.core.util.InvocationGate;
  import ch.qos.logback.core.util.SimpleInvocationGate;
  
  /**
   * SizeBasedTriggeringPolicy looks at size of the file being currently written
   * to. If it grows bigger than the specified size, the FileAppender using the
   * SizeBasedTriggeringPolicy rolls the file and creates a new one.
   * 
   * For more information about this policy, please refer to the online manual at
   * http://logback.qos.ch/manual/appenders.html#SizeBasedTriggeringPolicy
   * 
   * @author Ceki Gülcü
   * 
   */
  public class SizeBasedTriggeringPolicy<E> extends TriggeringPolicyBase<E> {
  
      public static final String SEE_SIZE_FORMAT = "http://logback.qos.ch/codes.html#sbtp_size_format";
      /**
       * The default maximum file size.
       */
      public static final long DEFAULT_MAX_FILE_SIZE = 10 * 1024 * 1024; // 10 MB
  
      FileSize maxFileSize = new FileSize(DEFAULT_MAX_FILE_SIZE);
      InvocationGate invocationGate = new SimpleInvocationGate();
      Duration checkIncrement = null;
  
      public SizeBasedTriggeringPolicy() {
      }
  
      public void start() {
          if(checkIncrement != null)
              invocationGate = new SimpleInvocationGate(checkIncrement);
          super.start();
      }
  
  
      public boolean isTriggeringEvent(final File activeFile, final E event) {
          long now = System.currentTimeMillis();
          if (invocationGate.isTooSoon(now))
              return false;
  
          return (activeFile.length() >= maxFileSize.getSize());
      }
  
      public FileSize getMaxFileSize() {
          return this.maxFileSize;
      }
  
      public void setMaxFileSize(FileSize aMaxFileSize) {
          this.maxFileSize = aMaxFileSize;
      }
  
      public Duration getCheckIncrement() {
          return checkIncrement;
      }
  
      public void setCheckIncrement(Duration checkIncrement) {
          this.checkIncrement = checkIncrement;
      }
  }