Safe Haskell	None
Language	Haskell2010

MessageDb.Subscription.FailedMessage

Description

The message type that is written to failure streams when using the writeToCategory FailureStrategy.

Synopsis

data FailedMessage = FailedMessage {
- failedMessage :: Message
- failedReason :: FailureReason
}
data FailureReason
- = HandleFailure HandleError
- | UnknownFailure Text
messageType :: MessageType
handleFailures :: Handlers output -> Handlers output

Documentation

data FailedMessage Source #

A message that was unable to be handled.

Constructors

FailedMessage
Fields failedMessage :: Message failedReason :: FailureReason

Instances

Instances details

Eq FailedMessage Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods (==) :: FailedMessage -> FailedMessage -> Bool # (/=) :: FailedMessage -> FailedMessage -> Bool #
Show FailedMessage Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods showsPrec :: Int -> FailedMessage -> ShowS # show :: FailedMessage -> String # showList :: [FailedMessage] -> ShowS #
ToJSON FailedMessage Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods toJSON :: FailedMessage -> Value # toEncoding :: FailedMessage -> Encoding # toJSONList :: [FailedMessage] -> Value # toEncodingList :: [FailedMessage] -> Encoding #
FromJSON FailedMessage Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods parseJSON :: Value -> Parser FailedMessage # parseJSONList :: Value -> Parser [FailedMessage] #

data FailureReason Source #

Reason why the message handle failed.

Constructors

HandleFailure HandleError
UnknownFailure Text

Instances

Instances details

Eq FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods (==) :: FailureReason -> FailureReason -> Bool # (/=) :: FailureReason -> FailureReason -> Bool #
Show FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods showsPrec :: Int -> FailureReason -> ShowS # show :: FailureReason -> String # showList :: [FailureReason] -> ShowS #
Generic FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Associated Types type Rep FailureReason :: Type -> Type # Methods from :: FailureReason -> Rep FailureReason x # to :: Rep FailureReason x -> FailureReason #
ToJSON FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods toJSON :: FailureReason -> Value # toEncoding :: FailureReason -> Encoding # toJSONList :: [FailureReason] -> Value # toEncodingList :: [FailureReason] -> Encoding #
FromJSON FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods parseJSON :: Value -> Parser FailureReason # parseJSONList :: Value -> Parser [FailureReason] #
Exception FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage Methods toException :: FailureReason -> SomeException # fromException :: SomeException -> Maybe FailureReason # displayException :: FailureReason -> String #
type Rep FailureReason Source #
Instance details Defined in MessageDb.Subscription.FailedMessage type Rep FailureReason = D1 ('MetaData "FailureReason" "MessageDb.Subscription.FailedMessage" "message-db-0.0.1.0-inplace" 'False) (C1 ('MetaCons "HandleFailure" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 HandleError)) :+: C1 ('MetaCons "UnknownFailure" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Text)))

messageType :: MessageType Source #

The message type of a FailedMessage.

handleFailures :: Handlers output -> Handlers output Source #

If you have a stream of FailedMessage messages, then you can use this function so you can handle the original messages that failed.