Porter

Port message manager to emulate a request-response style communication through ports, a'la Http.send ResponseHandler request.

Configuration

type alias Config req res msg =

{ outgoingPort : Value -> Cmd msg

, incomingPort : (Value -> Msg req res msg) -> Sub (Msg req res msg)

, encodeRequest : req -> Value

, decodeResponse : Decoder res

}

Porter configuration, containing ports and message encoders/decoders.

type Model req res msg

Porter model, used to keep track of response handlers.

type Msg req res msg

Module messages.

init : Model req res msg

Initialize model.

Config req res msg

-> Msg req res msg

-> Model req res msg

-> ( Model req res msg, Cmd msg )

Update port model based on local messages. Returns a new port model and a local command that must be mapped to the parent message.

subscriptions : Config req res msg -> Sub (Msg req res msg)

Subscribe to messages from ports.

send : (res -> msg) -> req -> Cmd (Msg req res msg)

Initiate a message send.