// setupSemaphore is used to setup a new Semaphore given the
// API client, key prefix, session name, and slot holder limit.
func (c *LockCommand) setupSemaphore(client *api.Client, limit int, prefix, name string) (*LockUnlock, error) {
if c.verbose {
c.Ui.Info(fmt.Sprintf("Setting up semaphore (limit %d) at prefix: %s", limit, prefix))
}
opts := api.SemaphoreOptions{
Prefix: prefix,
Limit: limit,
SessionName: name,
}
s, err := client.SemaphoreOpts(&opts)
if err != nil {
return nil, err
}
lu := &LockUnlock{
lockFn: s.Acquire,
unlockFn: s.Release,
cleanupFn: s.Destroy,
inUseErr: api.ErrSemaphoreInUse,
}
return lu, nil
}
