Safe Haskell	None
Language	Haskell2010

Hpgsql.Notification

Synopsis

getNotification :: HPgConnection -> IO NotificationResponse
getNotificationNonBlocking :: HPgConnection -> IO (Maybe NotificationResponse)
data NotificationResponse = NotificationResponse {
- notifierPid :: !Int32
- channelName :: !Text
- notifPayload :: !Text
}

Documentation

getNotification :: HPgConnection -> IO NotificationResponse Source #

Blocks until a new Notification arrives. This function is both thread-safe and interruption-safe, so you can run it with the same connection in parallel to any other functions.

getNotificationNonBlocking :: HPgConnection -> IO (Maybe NotificationResponse) Source #

This function is thread-and-interruption-safe, so you can run it with the same connection in parallel to any other functions.

data NotificationResponse Source #

Constructors

NotificationResponse
Fields notifierPid :: !Int32 channelName :: !Text notifPayload :: !Text

Instances

Instances details

Show NotificationResponse Source #
Instance details Defined in Hpgsql.InternalTypes Methods showsPrec :: Int -> NotificationResponse -> ShowS # show :: NotificationResponse -> String # showList :: [NotificationResponse] -> ShowS #
Eq NotificationResponse Source #
Instance details Defined in Hpgsql.InternalTypes Methods (==) :: NotificationResponse -> NotificationResponse -> Bool # (/=) :: NotificationResponse -> NotificationResponse -> Bool #