calamity-0.8.0.0: Calamity/Metrics/Noop.hs

-- | Noop handler for metrics
module Calamity.Metrics.Noop (runMetricsNoop) where

import Calamity.Metrics.Eff
import Calamity.Metrics.Internal

import Data.Default.Class

import Polysemy

runMetricsNoop :: Sem (MetricEff ': r) a -> Sem r a
runMetricsNoop = interpret $ \case
  RegisterCounter _ _ -> pure (Counter 0)
  RegisterGauge _ _ -> pure (Gauge 0)
  RegisterHistogram {} -> pure (Histogram 0)
  AddCounter _ _ -> pure def
  ModifyGauge _ _ -> pure def
  ObserveHistogram _ _ -> pure def