Safe Haskell	Safe-Inferred
Language	Haskell2010

Servant.Server.Internal.DelayedIO

Synopsis

newtype DelayedIO a = DelayedIO {
- runDelayedIO' :: ReaderT Request (ResourceT (RouteResultT IO)) a
}
liftRouteResult :: RouteResult a -> DelayedIO a
runDelayedIO :: DelayedIO a -> Request -> ResourceT IO (RouteResult a)
delayedFail :: ServerError -> DelayedIO a
delayedFailFatal :: ServerError -> DelayedIO a
withRequest :: (Request -> DelayedIO a) -> DelayedIO a

Documentation

newtype DelayedIO a Source #

Computations used in a Delayed can depend on the incoming Request, may perform IO, and result in a RouteResult, meaning they can either succeed, fail (with the possibility to recover), or fail fatally.

Constructors

DelayedIO
Fields runDelayedIO' :: ReaderT Request (ResourceT (RouteResultT IO)) a

Instances

Instances details

MonadIO DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods liftIO :: IO a -> DelayedIO a #
Applicative DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods pure :: a -> DelayedIO a # (<>) :: DelayedIO (a -> b) -> DelayedIO a -> DelayedIO b # liftA2 :: (a -> b -> c) -> DelayedIO a -> DelayedIO b -> DelayedIO c # (>) :: DelayedIO a -> DelayedIO b -> DelayedIO b # (<*) :: DelayedIO a -> DelayedIO b -> DelayedIO a #
Functor DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods fmap :: (a -> b) -> DelayedIO a -> DelayedIO b # (<$) :: a -> DelayedIO b -> DelayedIO a #
Monad DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods (>>=) :: DelayedIO a -> (a -> DelayedIO b) -> DelayedIO b # (>>) :: DelayedIO a -> DelayedIO b -> DelayedIO b # return :: a -> DelayedIO a #
MonadThrow DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods throwM :: (HasCallStack, Exception e) => e -> DelayedIO a #
MonadResource DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods liftResourceT :: ResourceT IO a -> DelayedIO a #
MonadBaseControl IO DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Associated Types type StM DelayedIO a # Methods liftBaseWith :: (RunInBase DelayedIO IO -> IO a) -> DelayedIO a # restoreM :: StM DelayedIO a -> DelayedIO a #
MonadReader Request DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods ask :: DelayedIO Request # local :: (Request -> Request) -> DelayedIO a -> DelayedIO a # reader :: (Request -> a) -> DelayedIO a #
MonadBase IO DelayedIO Source #
Instance details Defined in Servant.Server.Internal.DelayedIO Methods liftBase :: IO α -> DelayedIO α #
type StM DelayedIO a Source #
Instance details Defined in Servant.Server.Internal.DelayedIO type StM DelayedIO a = RouteResult a

liftRouteResult :: RouteResult a -> DelayedIO a Source #

runDelayedIO :: DelayedIO a -> Request -> ResourceT IO (RouteResult a) Source #

delayedFail :: ServerError -> DelayedIO a Source #

Fail with the option to recover.

delayedFailFatal :: ServerError -> DelayedIO a Source #

Fail fatally, i.e., without any option to recover.

withRequest :: (Request -> DelayedIO a) -> DelayedIO a Source #

Gain access to the incoming request.