Class RotateStrategyBySize

java.lang.Object
org.apache.log.output.io.rotate.RotateStrategyBySize
All Implemented Interfaces:
RotateStrategy

public class RotateStrategyBySize extends Object implements RotateStrategy
Rotation strategy based on size written to log file. The strategy will signal that a rotation is needed if the size goes above a set limit. Due to performance reasons the limit is not strictly enforced, however, the strategy has at most an error of the longest single data message written to the logging system. The error will occur immediately after a rotation, when the strategy is reset and the data that triggered the rotation is written. The strategy's internal counter will then be off with data.length() bytes.
Author:
Leo Sutic, Bernhard Huber
  • Field Details

    • m_maxSize

      private long m_maxSize
    • m_currentSize

      private long m_currentSize
  • Constructor Details

    • RotateStrategyBySize

      public RotateStrategyBySize()
      Rotate logs by size. By default do log rotation before writing approx. 1MB of messages
    • RotateStrategyBySize

      public RotateStrategyBySize(long maxSize)
      Rotate logs by size.
      Parameters:
      maxSize - rotate before writing maxSize [byte] of messages
  • Method Details

    • reset

      public void reset()
      Reset log size written so far.
      Specified by:
      reset in interface RotateStrategy
    • isRotationNeeded

      public boolean isRotationNeeded(String data, File file)
      Check if now a log rotation is neccessary.
      Specified by:
      isRotationNeeded in interface RotateStrategy
      Parameters:
      data - the message about to be written to the log system
      file - not used
      Returns:
      boolean return true if log rotation is neccessary, else false