46 lines
774 B
Go
46 lines
774 B
Go
package memory
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import (
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"context"
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"time"
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"forge.cadoles.com/cadoles/bouncer/internal/lock"
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"github.com/pkg/errors"
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)
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var (
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ErrTimeout = errors.New("timeout")
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)
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type Locker struct {
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lock chan struct{}
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}
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// WithLock implements lock.Locker.
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func (l *Locker) WithLock(ctx context.Context, key string, timeout time.Duration, fn func(ctx context.Context) error) error {
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select {
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case l.lock <- struct{}{}:
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defer func() {
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<-l.lock
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}()
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if err := fn(ctx); err != nil {
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return errors.WithStack(err)
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}
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case <-ctx.Done():
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return errors.WithStack(ctx.Err())
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case <-time.After(timeout):
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return errors.WithStack(ErrTimeout)
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}
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return nil
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}
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func NewLocker() *Locker {
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return &Locker{
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lock: make(chan struct{}, 1),
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}
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}
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var _ lock.Locker = &Locker{}
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