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|
package types
import (
"log"
)
type Backend interface {
Run()
}
type Worker struct {
Actions chan WorkerMessage
Backend Backend
Callbacks map[WorkerMessage]func(msg WorkerMessage)
Messages chan WorkerMessage
Logger *log.Logger
}
func (worker *Worker) PostAction(msg WorkerMessage,
cb func(msg WorkerMessage)) {
if resp := msg.InResponseTo(); resp != nil {
worker.Logger.Printf("(ui)=> %T:%T\n", msg, resp)
} else {
worker.Logger.Printf("(ui)=> %T\n", msg)
}
worker.Actions <- msg
if cb != nil {
worker.Callbacks[msg] = cb
}
}
func (worker *Worker) PostMessage(msg WorkerMessage,
cb func(msg WorkerMessage)) {
if resp := msg.InResponseTo(); resp != nil {
worker.Logger.Printf("->(ui) %T:%T\n", msg, resp)
} else {
worker.Logger.Printf("->(ui) %T\n", msg)
}
worker.Messages <- msg
if cb != nil {
worker.Callbacks[msg] = cb
}
}
func (worker *Worker) ProcessMessage(msg WorkerMessage) WorkerMessage {
if resp := msg.InResponseTo(); resp != nil {
worker.Logger.Printf("(ui)<= %T:%T\n", msg, resp)
} else {
worker.Logger.Printf("(ui)<= %T\n", msg)
}
if cb, ok := worker.Callbacks[msg.InResponseTo()]; ok {
cb(msg)
delete(worker.Callbacks, msg)
}
return msg
}
func (worker *Worker) ProcessAction(msg WorkerMessage) WorkerMessage {
if resp := msg.InResponseTo(); resp != nil {
worker.Logger.Printf("<-(ui) %T:%T\n", msg, resp)
} else {
worker.Logger.Printf("<-(ui) %T\n", msg)
}
if cb, ok := worker.Callbacks[msg.InResponseTo()]; ok {
cb(msg)
delete(worker.Callbacks, msg)
}
return msg
}
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