def lockFile()

in src/main/scala/org/jetbrains/plugins/scala/indices/protocol/sbt/Locking.scala [14:33]

• 18 lines of code
• 5 McCabe index (conditional complexity)

  def lockFile(compilationInfoDir: File): File =
    new File(compilationInfoDir, ".sbt-idea-lock")

  def lock(lockFile: File)(log: Logger = noopLogger): FileLock = {
    if (lockFile.getParentFile.exists() || lockFile.getParentFile.mkdirs()) {
      val raf = new RandomAccessFile(lockFile, "rw")

      try {
        log(s"Acquiring lock on file $lockFile ...")
        val lock = raf.getChannel.lock()
        locks.put(lockFile, LockData(raf, lock))
        lock
      }
      catch {
        case e: IOException =>
          raf.close()
          throw e
      }
    } else throw new RuntimeException("Unable to create lock file.")
  }