Wheb: The Batteries-Included Haskell WAI Framework

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Wheb aims at providing a simple simple and straightforward web server.

import           Web.Wheb
import           Data.Text.Lazy (pack)

main :: IO ()
main = do
 opts <- generateOptions $ addGET (pack ".") rootPat $ (text (pack "Hi!"))
 runWhebServer (opts :: MinOpts)

Wheb makes it easy to share a global context and handle requests statefully

 import           Control.Concurrent.STM
 import           Control.Monad.IO.Class
 import           Data.Monoid
 import           Data.Text.Lazy (Text, pack)
 import           Web.Wheb

 data MyApp = MyApp Text (TVar Int)
 data MyHandlerData = MyHandlerData Int

 instance Default MyHandlerData where
   def = MyHandlerData 0

 counterMw :: MonadIO m => WhebMiddleware MyApp MyHandlerData m
 counterMw = do
   (MyApp _ ctr) <- getApp
   number <- liftIO $ readTVarIO ctr
   liftIO $ atomically $ writeTVar ctr (succ number)
   putReqState (MyHandlerData number)
   return Nothing

 homePage :: WhebHandler MyApp MyHandlerData
 homePage = do
   (MyApp appName _)       <- getApp
   (MyHandlerData num) <- getReqState
   html $ ("<h1>Welcome to" <> appName <>
           "</h1><h2>You are visitor #" <> (pack $ show num) <> "</h2>")

 main :: IO ()
 main = do
   opts <- generateOptions $ do
             startingCounter <- liftIO $ newTVarIO 0
             addWhebMiddleware counterMw
             addGET (pack ".") rootPat $ homePage
             return $ MyApp "AwesomeApp" startingCounter
   runWhebServer opts

Wheb allows you to write robust high concurrency web applications simply and effectively.


Change log None available
Dependencies base (==4.6.*), blaze-builder (==0.3.*), bytestring (==0.10.*), case-insensitive (==1.0.*), conduit (==1.0.*), containers (==0.5.*), cookie (==0.4.*), data-default (==0.5.*), http-types (==0.8.*), mtl (==2.1.*), pwstore-fast (==2.4.*), stm (==2.4.*), text (==0.11.*), time (==1.4.*), transformers (==0.3.*), uuid (==1.3.*), wai (==2.0.*), wai-extra (==2.0.*), warp (==2.0.*) [details]
License BSD-3-Clause
Author Kyle Hanson
Maintainer hanooter@gmail.com
Category Web
Home page https://github.com/hansonkd/Wheb-Framework
Source repo head: git clone git://github.com/hansonkd/Wheb-Framework.git
Uploaded by hansonkd at 2014-02-06T20:57:34Z



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