Imm.Callback

Documentation

data Callback

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

Defined in Imm.Callback

Methods

(==) :: Callback -> Callback -> Bool

(/=) :: Callback -> Callback -> Bool

Ord Callback

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

Defined in Imm.Callback

Methods

readsPrec :: Int -> ReadS Callback

readList :: ReadS [Callback]

readPrec :: ReadPrec Callback

readListPrec :: ReadPrec [Callback]

Show Callback

Defined in Imm.Callback

Methods

showsPrec :: Int -> Callback -> ShowS

show :: Callback -> String

showList :: [Callback] -> ShowS

Generic Callback

Defined in Imm.Callback

Associated Types

type Rep Callback :: Type -> Type

Methods

from :: Callback -> Rep Callback x

to :: Rep Callback x -> Callback

FromDhall Callback

Defined in Imm.Callback

Methods

autoWith :: InputNormalizer -> Decoder Callback

Pretty Callback

Defined in Imm.Callback

Methods

pretty :: Callback -> Doc ann

prettyList :: [Callback] -> Doc ann

type Rep Callback

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

Meant to be called by the main imm process.

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

Meant to be called by callback process.