Control.Monad.Http

Contents

Description

Class, instances and transformer for monads capable of HTTP requests.

In some cases, it is useful to generalize this capability. For example, it can be used provide mock responses for testing.

Synopsis

Class

class Monad m => MonadHttp m where #

The class of monads capable of HTTP requests.

Minimal complete definition

Methods

Instances

MonadHttp IO #
Methods performRequest :: Request -> IO (Response ByteString) #
MonadThrow m => MonadHttp (HttpT m) #
Methods performRequest :: Request -> HttpT m (Response ByteString) #
MonadIO m => MonadHttp (ExceptT e m) #
Methods performRequest :: Request -> ExceptT e m (Response ByteString) #

Transformer

newtype HttpT m a #

An HTTP transformer monad parameterized by an inner monad m.

Constructors

HttpT
Fields unHttpT :: ReaderT (Response ByteString) m a

Instances

MonadTrans HttpT #
Methods lift :: Monad m => m a -> HttpT m a #
MonadError e m => MonadError e (HttpT m) #
Methods throwError :: e -> HttpT m a # catchError :: HttpT m a -> (e -> HttpT m a) -> HttpT m a #
Monad m => Monad (HttpT m) #
Methods (>>=) :: HttpT m a -> (a -> HttpT m b) -> HttpT m b # (>>) :: HttpT m a -> HttpT m b -> HttpT m b # return :: a -> HttpT m a # fail :: String -> HttpT m a #
Functor m => Functor (HttpT m) #
Methods fmap :: (a -> b) -> HttpT m a -> HttpT m b # (<$) :: a -> HttpT m b -> HttpT m a #
Applicative m => Applicative (HttpT m) #
Methods pure :: a -> HttpT m a # (<>) :: HttpT m (a -> b) -> HttpT m a -> HttpT m b # (>) :: HttpT m a -> HttpT m b -> HttpT m b # (<*) :: HttpT m a -> HttpT m b -> HttpT m a #
MonadIO m => MonadIO (HttpT m) #
Methods liftIO :: IO a -> HttpT m a #
MonadThrow m => MonadThrow (HttpT m) #
Methods throwM :: Exception e => e -> HttpT m a #
MonadCatch m => MonadCatch (HttpT m) #
Methods catch :: Exception e => HttpT m a -> (e -> HttpT m a) -> HttpT m a #
MonadThrow m => MonadHttp (HttpT m) #
Methods performRequest :: Request -> HttpT m (Response ByteString) #
Monad m => MonadReader (Response ByteString) (HttpT m) #
Methods ask :: HttpT m (Response ByteString) # local :: (Response ByteString -> Response ByteString) -> HttpT m a -> HttpT m a # reader :: (Response ByteString -> a) -> HttpT m a #

Arguments

Run an HTTP monad action and extract the inner monad.