func main() {
f := future.NewFuture()
go func() {
v, err := f.GetOrTimeout(2 * time.Second)
if err != nil {
if ferr, ok := err.(future.FutureError); ok {
println("Future error:", ferr.Error())
} else {
println("Other error:", err.Error())
}
}
println("Got: ", v.(int))
}()
//
// Set the future value.
//
f.SetValue(1)
// Allow it to print result.
time.Sleep(1 * time.Second)
}
func (c *CatServiceProviderLocal) RequestCat(name string) {
f := future.NewFuture()
acr := requestCatRequest{name, f, c}
c.dec.Execute(acr.Run)
val, err := f.Get()
if err != nil {
// Do something intelligent with it.
}
println("Cat:", name, val.(CatInfo).String())
}
//
// Does an entry exist in the register.
//
func (r *Register) EntryExists(name string) bool {
//
// A future is used to block the caller.
//
fture := future.NewFuture()
task := registerExistsTask{r, fture, name}
r.dec.Execute(task.Run)
// Await the response indefinitely.
v, err := fture.Get()
if err != nil {
println(err.Error())
return false // You need to consider how errors are handled here, it can require some thought!
}
return v.(bool)
}
func (r *Register) Count() int {
_future := future.NewFuture()
//
// Simple inner function.
//
r.dec.Execute(func() (executor.ExecutionResult, error) {
//
// Update if exists.
//
_future.SetValue(len(r.data))
return executor.EX_OK, nil
})
v, e := _future.Get()
if e != nil {
println(e.Error())
return -1 // sake of example.
}
return v.(int)
}
