object DurableStateBehavior
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- type CommandHandler[Command, State] = (State, Command) => Effect[State]
Type alias for the command handler function that defines how to act on commands.
Type alias for the command handler function that defines how to act on commands.
The type alias is not used in API signatures because it's easier to see (in IDE) what is needed when full function type is used. When defining the handler as a separate function value it can be useful to use the alias for shorter type signature.
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- def apply[Command, State](persistenceId: PersistenceId, emptyState: State, commandHandler: (State, Command) => Effect[State]): DurableStateBehavior[Command, State]
Create a
Behaviorfor a persistent actor with durable storage of its state.Create a
Behaviorfor a persistent actor with durable storage of its state.- persistenceId
stable unique identifier for the
DurableStateBehavior- emptyState
the intial state for the entity before any state has been stored
- commandHandler
map commands to effects e.g. persisting state, replying to commands
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- def lastSequenceNumber(context: ActorContext[_]): Long
The last sequence number that was persisted, can only be called from inside the handlers of a
DurableStateBehavior - final def ne(arg0: AnyRef): Boolean
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- final def notify(): Unit
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- final def notifyAll(): Unit
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- final def wait(arg0: Long, arg1: Int): Unit
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- def withEnforcedReplies[Command, State](persistenceId: PersistenceId, emptyState: State, commandHandler: (State, Command) => ReplyEffect[State]): DurableStateBehavior[Command, State]
Create a
Behaviorfor a persistent actor that is enforcing that replies to commands are not forgotten.Create a
Behaviorfor a persistent actor that is enforcing that replies to commands are not forgotten. Then there will be compilation errors if the returned effect isn't a ReplyEffect, which can be created with Effect.reply, Effect.noReply, EffectBuilder.thenReply, or EffectBuilder.thenNoReply. - object CommandHandler
The
CommandHandlerdefines how to act on commands.The
CommandHandlerdefines how to act on commands. ACommandHandleris a function:(State, Command) => Effect[State]The CommandHandler#command is useful for simple commands that don't need the state and context.