private[this] def inMegabytes()

in finagle-stats-core/src/main/scala/com/twitter/finagle/stats/StatsFormatter.scala [165:195]

• 29 lines of code
• 21 McCabe index (conditional complexity)

    private[this] def inMegabytes(l: Number): Number = l.longValue() / 1048576L
    private[this] def inSeconds(l: Number): Number = l.longValue() / 1000L
    private[this] val gcCycles: Regex = "^jvm_gc_(.*)_cycles$".r
    private[this] val gcMsec: Regex = "^jvm_gc_(.*)_msec$".r

    override def apply(values: SampledValues): Map[String, Number] = {
      val original = super.apply(values)

      original.map {
        case ("jvm_num_cpus", n) => "jvm_available_processors" -> n
        case ("jvm_classes_current_loaded", n) => "jvm_class_loaded_count" -> n
        case ("jvm_classes_total_loaded", n) => "jvm_class_total_loaded_count" -> n
        case ("jvm_classes_total_unloaded", n) => "jvm_class_unloaded_count" -> n
        case ("jvm_gc_msec", n) => "jvm_gc_collection_time_ms" -> n
        case ("jvm_gc_cycles", n) => "jvm_gc_collection_count" -> n
        case ("jvm_heap_committed", n) => "jvm_memory_heap_mb_committed" -> inMegabytes(n)
        case ("jvm_heap_max", n) => "jvm_memory_heap_mb_max" -> inMegabytes(n)
        case ("jvm_heap_used", n) => "jvm_memory_heap_mb_used" -> inMegabytes(n)
        case ("jvm_nonheap_committed", n) => "jvm_memory_non_heap_mb_committed" -> inMegabytes(n)
        case ("jvm_nonheap_max", n) => "jvm_memory_non_heap_mb_max" -> inMegabytes(n)
        case ("jvm_nonheap_used", n) => "jvm_memory_non_heap_mb_used" -> inMegabytes(n)
        case ("jvm_thread_count", n) => "jvm_threads_active" -> n
        case ("jvm_thread_daemon_count", n) => "jvm_threads_daemon" -> n
        case ("jvm_thread_peak_count", n) => "jvm_threads_peak" -> n
        case ("jvm_start_time", n) => "jvm_time_ms" -> n
        case ("jvm_uptime", n) => "jvm_uptime_secs" -> inSeconds(n)
        case (gcCycles(gc), n) => s"jvm_gc_${gc}_collection_count" -> n
        case (gcMsec(gc), n) => s"jvm_gc_${gc}_collection_time_ms" -> n
        case kv => kv
      }
    }