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|
package imap
import (
"context"
)
type Waiter interface {
// Wait waits until the update has been marked as done.
Wait() (error, bool)
// WaitContext waits until the update has been marked as done or the context is cancelled.
WaitContext(context.Context) (error, bool)
// Done marks the update as done and report an error (if any).
Done(error)
}
type updateWaiter struct {
waitCh chan error
}
func newUpdateWaiter() *updateWaiter {
return &updateWaiter{
waitCh: make(chan error, 1),
}
}
func (w *updateWaiter) Wait() (error, bool) {
err, ok := <-w.waitCh
return err, ok
}
func (w *updateWaiter) WaitContext(ctx context.Context) (error, bool) {
select {
case <-ctx.Done():
return nil, false
case err, ok := <-w.waitCh:
return err, ok
}
}
func (w *updateWaiter) Done(err error) {
if err != nil {
w.waitCh <- err
}
close(w.waitCh)
}
|
