text: #!/usr/bin/env python
  import sys
  
  sys.path.append("../")
  from logparser import Drain
  
  input_dir = "../logs/HDFS/"  # The input directory of log file
  output_dir = "Drain_result/"  # The output directory of parsing results
  log_file = "HDFS_2k.log"  # The input log file name
  log_format = "<Date> <Time> <Pid> <Level> <Component>: <Content>"  # HDFS log format
  # Regular expression list for optional preprocessing (default: [])
  regex = [
      r"blk_(|-)[0-9]+",  # block id
      r"(/|)([0-9]+\.){3}[0-9]+(:[0-9]+|)(:|)",  # IP
      r"(?<=[^A-Za-z0-9])(\-?\+?\d+)(?=[^A-Za-z0-9])|[0-9]+$",  # Numbers
  ]
  st = 0.5  # Similarity threshold
  depth = 4  # Depth of all leaf nodes
  
  parser = Drain.LogParser(log_format, indir=input_dir, outdir=output_dir, depth=depth, st=st, rex=regex)
  parser.parse(log_file)
  