def getLog()

in src/main/scala/com/twitter/iago/server/ParrotServer.scala [233:253]

• 16 lines of code
• 3 McCabe index (conditional complexity)

  def getLog(offset: Long, length: Int, fileName: java.lang.String): Future[ParrotLog] = Future {

    if (wandering(fileName))
      throw new RuntimeException("can only reference files at the top of this sandbox")

    val fl = new File(fileName)
    val sz = fl.length()

    // an offset of -1 means please position me near the end
    val tail = 5000
    val (theLen, theOffset) = if (offset == -1) (tail, sz - tail) else (length, offset)

    val fr = new FileReader(fl)
    val off = math.min(sz, math.max(0, theOffset))
    fr.skip(off)
    val len = math.max(0, math.min(theLen, math.min(Int.MaxValue.toLong, sz - off).toInt))
    val buf = new Array[Char](len)
    fr.read(buf)
    fr.close()
    ParrotLog(off, len, new String(buf))
  }