Yu.Utils.Handler

The method which might be useful for server

about exception

catchH

Arguments

:: Exception e

=> HandlerT site IO a

the action

-> (e -> HandlerT site IO a)

the exception handler

-> HandlerT site IO a

return

The method to catch the exception (in HadnlerT)

handlerH

Arguments

:: Exception e

=> (e -> HandlerT site IO a)

the handler for exceptions

-> HandlerT site IO a

operation

-> HandlerT site IO a

The method for handler, equal to flip catchH

tryH

Arguments

:: Exception e

=> HandlerT site IO a

action

-> HandlerT site IO (Either e a)

return the result or the exception

The method for a try

about functor and moand

(<#>) infixl 4

Arguments

:: (Functor f1, Functor f2)

=> (a -> b)

func

-> f1 (f2 a)

item

-> f1 (f2 b)

eq to (func $) $ item

the operator just like $

(<%>) infixl 4

Arguments

:: (Monad m, Functor f)

=> (a -> m b)

func

-> f (m a)

item

-> f (m b)

eq to (func =<$ item

return the exception

returnE

Arguments

:: (Monad m, Exception e)

=> e

the exception

-> m String

return as string

a method to return a `exception' when it catched

returnET

Arguments

:: (Monad m, Exception e)

=> e

exception

-> m Text

the text-returned version for returnE

returnEH

Arguments

:: SomeException

exception

-> HandlerT site IO TypedContent

the HandlerT version for returnE and returnEt

others

showJs :: Show a => a -> RawJavascript

show the js

fromBinToBytestr :: Binary -> ByteString

from binary to bytestring

data LogPath

the path for logger

Constructors

LogFile FilePath

using files

LogStdout

using stdout

LogStderr

using stderr

Instances

FromJSON LogPath

Methods

parseJSON :: Value -> Parser LogPath

parseJSONList :: Value -> Parser [LogPath]

Orphan instances

ToJSON ErrorResponse

instance the error response to json

Methods

toJSON :: ErrorResponse -> Value

toEncoding :: ErrorResponse -> Encoding

toJSONList :: [ErrorResponse] -> Value

toEncodingList :: [ErrorResponse] -> Encoding