// setupSemaphore is used to setup a new Semaphore given the API client, key
// prefix, session name, and slot holder limit. If oneshot is true then we will
// set up for a single attempt at acquisition, using the given wait time. The
// retry parameter sets how many 500 errors the lock monitor will tolerate
// before giving up the semaphore.
func (c *LockCommand) setupSemaphore(client *api.Client, limit int, prefix, name string,
oneshot bool, wait time.Duration, retry int) (*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,
MonitorRetries: retry,
MonitorRetryTime: defaultMonitorRetryTime,
}
if oneshot {
opts.SemaphoreTryOnce = true
opts.SemaphoreWaitTime = wait
}
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,
rawOpts: &opts,
}
return lu, nil
}
// 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
}