Hackage :: [Package]

katip-wai: WAI middleware for logging request and response info through katip.

This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.

[maintain] [Publish]

WAI middleware for logging request and response info through katip. Please see the README on GitHub at https://github.com/Disco-Dave/katip-wai#readme

[Skip to Readme]

Properties

Versions 0.1.0.0, 0.1.1.0, 0.1.2.0, 0.1.2.1, 0.1.2.2, 0.1.2.3, 0.1.2.4, 0.2.0.0, 0.2.0.0
Change log CHANGELOG.md
Dependencies aeson (>=0.6 && <2.3), base (>=4.7 && <5), bytestring (>=0.9 && <0.13), case-insensitive (>=1.2.1 && <1.3), clock (>=0.8 && <0.9), containers (>=0.6.7 && <0.8), http-types (>=0.12 && <0.13), katip (>=0.8 && <0.9), network (>=3.0 && <3.3), text (>=0.11 && <2.2), time (>=1.12.2 && <1.15), uuid (>=1.3 && <1.4), wai (>=3.0 && <3.3) [details]
License BSD-3-Clause
Copyright 2024 David Burkett
Author David Burkett
Maintainer David Burkett
Category Web, Logging
Home page https://github.com/Disco-Dave/katip-wai#readme
Bug tracker https://github.com/Disco-Dave/katip-wai/issues
Uploaded by discodave at 2024-09-11T23:33:36Z

Modules

[Index] [Quick Jump]

Flags

Manual Flags

NameDescriptionDefault
pedantic

Enables -Werror, which turns warnings into errors.

Disabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees

Readme for katip-wai-0.2.0.0

[back to package description]

katip-wai ci

Middleware for logging http request and response information through Katip.

You can find the full documentation on Hackage.

Example using Servant (./example)

import Control.Exception (bracket)
import Data.Proxy (Proxy (Proxy))
import Katip qualified
import Katip.Wai (ApplicationT, runApplication)
import Katip.Wai qualified
import Network.Wai.Handler.Warp qualified as Warp
import Servant qualified
import System.IO (stdout)
import UnliftIO (MonadUnliftIO (withRunInIO))


type Api = Servant.GetNoContent


server :: Servant.ServerT Api (Katip.KatipContextT Servant.Handler)
server = do
  Katip.logLocM Katip.InfoS "This message should also have the request context"
  pure Servant.NoContent


mkApplication :: ApplicationT (Katip.KatipContextT IO)
mkApplication = Katip.Wai.middleware Katip.InfoS $ request send -> do
  logEnv <- Katip.getLogEnv
  context <- Katip.getKatipContext
  namespace <- Katip.getKatipNamespace

  let hoistedApp =
        let proxy = Proxy @Api
            hoistedServer = Servant.hoistServer proxy (Katip.runKatipContextT logEnv context namespace) server
         in Servant.serve proxy hoistedServer

  withRunInIO $ toIO -> hoistedApp request (toIO . send)


withLogEnv :: (Katip.LogEnv -> IO a) -> IO a
withLogEnv useLogEnv = do
  handleScribe <-
    Katip.mkHandleScribeWithFormatter
      Katip.jsonFormat
      (Katip.ColorLog False)
      stdout
      (Katip.permitItem minBound)
      Katip.V3

  let makeLogEnv =
        Katip.initLogEnv "example-app" "local-dev"
          >>= Katip.registerScribe "stdout" handleScribe Katip.defaultScribeSettings

  bracket makeLogEnv Katip.closeScribes useLogEnv


main :: IO ()
main = withLogEnv $ logEnv ->
  let
    app = runApplication (Katip.runKatipContextT logEnv () "main") mkApplication
   in
    Warp.run 5555 app

Example output

{"app":["example-app"],"at":"2024-09-07T18:44:10.411097829Z","data":{"request":{"headers":{Host:"localhost:5555","User-Agent":"curl8.9.1"},"httpVersion":"HTTP1.1","id":"7ec0fbc4-722c-4c70-a168-c2abe5c7b4fa","isSecure":false,"method":GET,"path":"/","queryString":[],"receivedAt":"2024-09-07T18:44:10.411057334Z","remoteHost":"127.0.0.1:51230"}},"env":"local-dev","host":"x1g11","loc":null,"msg":"Request received.","ns":["example-app","main"],"pid":"106249","sev":Info,"thread":"27"}
{"app":["example-app"],"at":"2024-09-07T18:44:10.411097829Z","data":{"request":{"headers":{Host:"localhost:5555","User-Agent":"curl8.9.1"},"httpVersion":"HTTP1.1","id":"7ec0fbc4-722c-4c70-a168-c2abe5c7b4fa","isSecure":false,"method":GET,"path":"","queryString":[],"receivedAt":"2024-09-07T18:44:10.411057334Z","remoteHost":"127.0.0.1:51230"}},"env":"local-dev","host":"x1g11","loc":{"loc_col":3,"loc_fn":"srcKatipWaiExample/Short.hs","loc_ln":19,"loc_mod":Katip.Wai.Example.Short,"loc_pkg":"my-katip-wai-example-0.1.0.0-inplace"},"msg":"This message should also have the request context","ns":["example-app","main"],"pid":"106249","sev":Info,"thread":"27"}
{"app":["example-app"],"at":"2024-09-07T18:44:10.411097829Z","data":{"request":{"headers":{Host:"localhost:5555","User-Agent":"curl8.9.1"},"httpVersion":"HTTP1.1","id":"7ec0fbc4-722c-4c70-a168-c2abe5c7b4fa","isSecure":false,"method":GET,"path":"/","queryString":[],"receivedAt":"2024-09-07T18:44:10.411057334Z","remoteHost":"127.0.0.1:51230"},"response":{"headers":{},"respondedAt":"2024-09-07T18:44:10.411199014Z","responseTime":{"time":0.137369,"unit":"ms"},"status":{"code":204,"message":"No Content"}}},"env":"local-dev","host":"x1g11","loc":null,"msg":"Response sent.","ns":["example-app","main"],"pid":"106249","sev":Info,"thread":"27"}