Eventful.Store.Memory

Documentation

tvarEventStore :: TVar (EventMap serialized) -> EventStore serialized STM

An EventStore that stores events in a TVar and runs in STM. This functions initializes the store by creating the TVar and hooking up the event store API to that TVar.

tvarGloballyOrderedEventStore :: TVar (EventMap serialized) -> GloballyOrderedEventStore serialized STM

Analog of tvarEventStore for a GloballyOrderedEventStore

stateEventStore :: MonadState (EventMap serialized) m => EventStore serialized m

Specialized version of embeddedStateEventStore that only contains an EventMap in the state.

stateGloballyOrderedEventStore :: MonadState (EventMap serialized) m => GloballyOrderedEventStore serialized m

Analogous to stateEventStore for a GloballyOrderedEventStore.

embeddedStateEventStore :: MonadState s m => (s -> EventMap serialized) -> (s -> EventMap serialized -> s) -> EventStore serialized m

An EventStore that runs on some MonadState that contains an EventMap. This is useful if you want to include other state in your MonadState.

embeddedStateGloballyOrderedEventStore :: MonadState s m => (s -> EventMap serialized) -> GloballyOrderedEventStore serialized m

Analogous to embeddedStateEventStore for a GloballyOrderedEventStore.

data EventMap serialized

Internal data structure used for the in-memory event stores.

Instances

Show serialized => Show (EventMap serialized)

Methods

showsPrec :: Int -> EventMap serialized -> ShowS

show :: EventMap serialized -> String

showList :: [EventMap serialized] -> ShowS

emptyEventMap :: EventMap serialized

What it says on the tin, an initialized empty EventMap

eventMapTVar :: IO (TVar (EventMap serialized))

Initialize an EventMap in a TVar

module Eventful.Store.Class