113 lines
1.8 KiB
Go
113 lines
1.8 KiB
Go
package iot
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
type DeviceError struct {
|
|
errorMsg string
|
|
}
|
|
|
|
func (err *DeviceError) Error() string {
|
|
return err.errorMsg
|
|
}
|
|
|
|
type AsyncResult interface {
|
|
Wait() bool
|
|
|
|
WaitTimeout(time.Duration) bool
|
|
|
|
Done() <-chan struct{}
|
|
|
|
Error() error
|
|
}
|
|
|
|
type baseAsyncResult struct {
|
|
m sync.RWMutex
|
|
complete chan struct{}
|
|
err error
|
|
}
|
|
|
|
// Wait implements the Token Wait method.
|
|
func (b *baseAsyncResult) Wait() bool {
|
|
<-b.complete
|
|
return true
|
|
}
|
|
|
|
// WaitTimeout implements the Token WaitTimeout method.
|
|
func (b *baseAsyncResult) WaitTimeout(d time.Duration) bool {
|
|
timer := time.NewTimer(d)
|
|
select {
|
|
case <-b.complete:
|
|
if !timer.Stop() {
|
|
<-timer.C
|
|
}
|
|
return true
|
|
case <-timer.C:
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// Done implements the Token Done method.
|
|
func (b *baseAsyncResult) Done() <-chan struct{} {
|
|
return b.complete
|
|
}
|
|
|
|
func (b *baseAsyncResult) flowComplete() {
|
|
select {
|
|
case <-b.complete:
|
|
default:
|
|
close(b.complete)
|
|
}
|
|
}
|
|
|
|
func (b *baseAsyncResult) Error() error {
|
|
b.m.RLock()
|
|
defer b.m.RUnlock()
|
|
return b.err
|
|
}
|
|
|
|
func (b *baseAsyncResult) setError(e error) {
|
|
b.m.Lock()
|
|
b.err = e
|
|
b.flowComplete()
|
|
b.m.Unlock()
|
|
}
|
|
|
|
type BooleanAsyncResult struct {
|
|
baseAsyncResult
|
|
}
|
|
|
|
func (bar *BooleanAsyncResult) Result() bool {
|
|
bar.m.RLock()
|
|
defer bar.m.RUnlock()
|
|
|
|
return bar.err == nil
|
|
}
|
|
|
|
func (bar *BooleanAsyncResult) completeSuccess() {
|
|
bar.m.RLock()
|
|
defer bar.m.RUnlock()
|
|
bar.err = nil
|
|
bar.complete <- struct{}{}
|
|
}
|
|
|
|
func (bar *BooleanAsyncResult) completeError(err error) {
|
|
bar.m.RLock()
|
|
defer bar.m.RUnlock()
|
|
bar.err = err
|
|
bar.complete <- struct{}{}
|
|
}
|
|
|
|
func NewBooleanAsyncResult() *BooleanAsyncResult {
|
|
asyncResult := &BooleanAsyncResult{
|
|
baseAsyncResult: baseAsyncResult{
|
|
complete: make(chan struct{}),
|
|
},
|
|
}
|
|
|
|
return asyncResult
|
|
}
|