JavaStackParser.scala

package utils

import scala.io.Source

/**
 * parse jstack log
 */
object JavaStackParser {
  def main(args: Array[String]): Unit = {
    val lines = Source.fromFile("/Users/sjk/19229.log").getLines()
    val ret = convertHashId(lines)
    println(ret.mkString("\n"))
    //    println(convertHashId(Iterator("C2 CompilerThread0 daemon prio=5 tid=0x00007fb428816800 nid=0x4b03 waiting on condition [0x0000000000000000]")).mkString("\n"))
  }

  def convertHashId(it: Iterator[String]): Array[String] = {
    it.toArray.map(f => if (f.contains("0x")) {
      //      println(f)
      f.split("0x").zipWithIndex.map(x => {
        if (x._2 > 0) {
          x._1.toCharArray.zipWithIndex.find(f => {
            f._1 == '>' || f._1 == ')' || f._1 == ']' || f._1 == 32
          }) match {
            case Some((_, idx)) =>
              java.lang.Long.decode("0x" + x._1.substring(0, idx)) + x._1.substring(idx)
            case None =>
              x._1
          }
        } else x._1
      }).mkString
    } else {
      f
    })
  }
}