// here we measure method elapsed time, 
  // label will be tracked as MainActivity::onCreate, 
  // class & method name will extracted automatically
  override fun onCreate(savedInstanceState: Bundle?) = measureMethod(this) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    setupClickListeners()
  }
  
  // here we measure method elapsed time, 
  // here we use custom label, it will tracked as "onStart method"
  override fun onStart() = measureMethodWithLabel("onStart method") {
    super.onStart()
    //
  }

class App : Application() {

    companion object {

        val WHAT_EVER_YOU_WANT_TAG = "TAG"

    }

    override fun onCreate() {
        super.onCreate()

        PulkovoDispatcher
            // Add logger to make output with measured values
            // this is generic implementation
            .addReducer(object : IReducer {

                override fun reduce(record: IMeasureRecord) {
                    // use what ever logger you want
                    // here standard Android logger is used
                    Log.e(WHAT_EVER_YOU_WANT_TAG, "$record")
                }

            })
    }
}

class App : Application() {

    companion object {

        val WHAT_EVER_YOU_WANT_TAG = "TAG"

    }

    lateinit var statsReducer: StatsReducer

    override fun onCreate() {
        super.onCreate()
        statsReducer = StatsReducer(this)

        PulkovoDispatcher
            // Add logger to make output with measured values
            // this is generic implementation
            .addReducer(object : IReducer {

                override fun reduce(record: IMeasureRecord) {
                    // use what ever logger you want
                    // here standard Android logger is used
                    Log.e(WHAT_EVER_YOU_WANT_TAG, "$record")
                }

            })
            // Add StatsSollector to collect values
            .addReducer(statsReducer)
    }
}

  // here we measure method elapsed time, 
  // here we use custom label, it will tracked as "onStart method"
  override fun onStart() = measureMethodWithLabel("onStart method") {
    super.onStart()
    //
  }
  
  // here we measure method elapsed time, 
  // label will be tracked as MainActivity::onCreate, 
  // class & method name will extracted automatically
  override fun onCreate(savedInstanceState: Bundle?) = measureMethod(this) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    setupClickListeners()
  }
  
  // measure RxJava chain, it's better
  private fun loadWeather() {
    // here we measure how much time will take data-load for RxJava chain
    startMeasure(
          Metrics.LoadWeather,
        // start measurement, initial observable
          weatherAPIClient.getWeather("Tallinn", "476f28ed531b9477e89ddb6ab463dbd5")
        )
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        // stop measurement
        .stopMeasure(Metrics.LoadWeather)
        .subscribe ({
            displayWeather(it)
        }, { Log.wtf(">>>", "oh my posh", it )})
  }
  
  // here we measure how much time it will take
  // to display data on UI, to set text to textviews and etc
  private fun displayWeather(cityWeather: CityWeather) = measureMethodWithLabel(Metrics.DisplayWeather) {
    cityName.text = "Tallinn"
    humidity.text = "Humidity " + "%.2f".format(cityWeather.main!!.humidity)
    temperature.text = "Temperature " + "%.2f".format((cityWeather.main!!.temp - 271.15))
    description.text = "In general it's " + (cityWeather.weather!![0].description)
  }