name:                prometheus
version:             2.3.1
synopsis:            Prometheus Haskell Client
homepage:            http://github.com/bitnomial/prometheus
bug-reports:         http://github.com/bitnomial/prometheus/issues
license:             BSD3
license-file:        LICENSE
author:              Luke Hoersten
maintainer:          luke@bitnomial.com, opensource@bitnomial.com
copyright:           Bitnomial, Inc. (c) 2016-2023
category:            Metrics, Monitoring, Web, System
build-type:          Simple
cabal-version:       >=1.10

description:
  [Prometheus Haskell Client]
  .
  A simple and modern, type safe, performance focused, idiomatic Haskell client
  for <http://prometheus.io Prometheus> monitoring. Specifically there is no
  use of unsafe IO or manual ByteString construction from lists of
  bytes. Batteries-included web server.
  .
  A key design element of this library is that the RegistryT monad transformer
  is only required for registering new time series. Once the time series is
  registered, new data samples may just be added in the IO monad.
  .
  Note: Version 0.* supports Prometheus v1.0 and version 2.* supports Prometheus v2.0.
  .
  [Usage Example]
  .
  > module Example where
  >
  > import           Control.Monad.IO.Class                         (liftIO)
  > import           System.Metrics.Prometheus.Http.Scrape          (serveMetricsT)
  > import           System.Metrics.Prometheus.Concurrent.RegistryT
  > import           System.Metrics.Prometheus.Metric.Counter       (inc)
  > import           System.Metrics.Prometheus.MetricId
  >
  > main :: IO ()
  > main = runRegistryT $ do
  >     -- Labels can be defined as lists or added to an empty label set
  >     connectSuccessGauge <- registerGauge "example_connections" (fromList [("login", "success")])
  >     connectFailureGauge <- registerGauge "example_connections" (addLabel "login" "failure" mempty)
  >     connectCounter <- registerCounter "example_connection_total" mempty
  >     latencyHistogram <- registerHistogram "example_round_trip_latency_ms" mempty [10, 20..100]
  >
  >     liftIO $ inc connectCounter -- increment a counter
  >
  >     -- [...] pass metric handles to the rest of the app
  >
  >     serveMetricsT 8080 ["metrics"] -- http://localhost:8080/metric server
  >
  .
  [Advanced Usage]
  .
  A `Registry` and `StateT`-based `RegistryT` are available for unit testing or generating lists
  of `[IO a]` actions that can be `sequenced` and returned from pure code to be applied.


extra-source-files: Example.hs
                  , README.md

-- This flag builds the Example.hs file.  It is only used for testing.  It
-- is enabled in CI.
flag buildexamples
  description: Build the Example.hs file. This is normally only used for testing.
  default:     False

library
  hs-source-dirs: src
  default-language: Haskell2010

  ghc-options: -Wall -fwarn-tabs -fno-warn-unused-do-bind

  exposed-modules: System.Metrics.Prometheus.Concurrent.Registry
                 , System.Metrics.Prometheus.Concurrent.RegistryT
                 , System.Metrics.Prometheus.Encode.Text
                 , System.Metrics.Prometheus.Encode.Text.Histogram
                 , System.Metrics.Prometheus.Encode.Text.MetricId
                 , System.Metrics.Prometheus.Http.Push
                 , System.Metrics.Prometheus.Http.Scrape
                 , System.Metrics.Prometheus.Metric
                 , System.Metrics.Prometheus.Metric.Counter
                 , System.Metrics.Prometheus.Metric.Gauge
                 , System.Metrics.Prometheus.Metric.Histogram
                 , System.Metrics.Prometheus.Metric.Summary
                 , System.Metrics.Prometheus.MetricId
                 , System.Metrics.Prometheus.Registry
                 , System.Metrics.Prometheus.RegistryT

  build-depends: base            >= 4.9  && < 5
               , atomic-primops  >= 0.8  && < 0.9
               , bytestring      >= 0.10 && < 0.13
               , containers      >= 0.5  && < 0.8
               , http-client     >= 0.4  && < 0.8
               , http-client-tls >= 0.3  && < 0.5
               , http-types      >= 0.8  && < 0.13
               , network-uri     >= 2.5  && < 2.7
               , text            >= 1.2  && < 2.2
               , transformers    >= 0.4  && < 0.7
               , wai             >= 3.2  && < 3.3
               , warp            >= 3.2  && < 3.5

executable prometheus-example
  main-is: Example.hs
  default-language: Haskell2010

  ghc-options: -Wall -fwarn-tabs -fno-warn-unused-do-bind

  build-depends: base
               , prometheus

  if flag(buildexamples)
    buildable:         True
  else
    buildable:         False

source-repository head
  type:     git
  location: https://github.com/bitnomial/prometheus