Safe Haskell	None
Language	Haskell2010

Imm.Callback

Synopsis

data Callback = Callback {
- _executable :: FilePath
- _arguments :: [Text]
}
serializeMessage :: Feed -> FeedElement -> LByteString
deserializeMessage :: MonadFail m => LByteString -> m (Feed, FeedElement)

Documentation

data Callback Source #

External program run for each feed element.

Data is passed to that program through standard input (stdin), using Avro (https://hackage.haskell.org/package/avro) serialization format. The data schema is described in file ids/callback.json, provided with this library.

Constructors

Callback
Fields _executable :: FilePath _arguments :: [Text]

Instances

Eq Callback Source #
Instance details Defined in Imm.Callback Methods (==) :: Callback -> Callback -> Bool # (/=) :: Callback -> Callback -> Bool #
Ord Callback Source #
Instance details Defined in Imm.Callback Methods compare :: Callback -> Callback -> Ordering # (<) :: Callback -> Callback -> Bool # (<=) :: Callback -> Callback -> Bool # (>) :: Callback -> Callback -> Bool # (>=) :: Callback -> Callback -> Bool # max :: Callback -> Callback -> Callback # min :: Callback -> Callback -> Callback #
Read Callback Source #
Instance details Defined in Imm.Callback Methods readsPrec :: Int -> ReadS Callback # readList :: ReadS [Callback] # readPrec :: ReadPrec Callback # readListPrec :: ReadPrec [Callback] #
Show Callback Source #
Instance details Defined in Imm.Callback Methods showsPrec :: Int -> Callback -> ShowS # show :: Callback -> String # showList :: [Callback] -> ShowS #
Generic Callback Source #
Instance details Defined in Imm.Callback Associated Types type Rep Callback :: Type -> Type # Methods from :: Callback -> Rep Callback x # to :: Rep Callback x -> Callback #
FromDhall Callback Source #
Instance details Defined in Imm.Callback Methods autoWith :: InputNormalizer -> Decoder Callback #
Pretty Callback Source #
Instance details Defined in Imm.Callback Methods pretty :: Callback -> Doc ann # prettyList :: [Callback] -> Doc ann #
type Rep Callback Source #
Instance details Defined in Imm.Callback type Rep Callback = D1 (MetaData "Callback" "Imm.Callback" "imm-1.10.0.0-377OdLQgGSoCHB8Qc5Ycpd" False) (C1 (MetaCons "Callback" PrefixI True) (S1 (MetaSel (Just "_executable") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath) :*: S1 (MetaSel (Just "_arguments") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [Text])))

serializeMessage :: Feed -> FeedElement -> LByteString Source #

Meant to be called by the main imm process.

deserializeMessage :: MonadFail m => LByteString -> m (Feed, FeedElement) Source #

Meant to be called by callback process.