if !filepath.IsAbs(a.QueueDir) {
			return errors.New("queueDir path should be absolute")
		}
	}

	return nil
}

// AMQPTarget - AMQP target
type AMQPTarget struct {
	initOnce once.Init

	id         event.TargetID
	args       AMQPArgs
	conn       *amqp091.Connection
	connMutex  sync.Mutex
	store      store.Store[event.Event]
	loggerOnce logger.LogOnce

		return errors.New("username and password should be set in pairs")
	}

	return nil
}

// ElasticsearchTarget - Elasticsearch target.
type ElasticsearchTarget struct {
	initOnce once.Init

	id         event.TargetID
	args       ElasticsearchArgs
	client     esClient
	store      store.Store[event.Event]
	loggerOnce logger.LogOnce
	quitCh     chan struct{}
}

			}
			sizeS.totalSize = s.Size()
			sizeS.versions++
			return sizeS, nil
		}
		return sizeS, err
	}
	xls := xlStorage{drivePath: base, diskInfoCache: cachevalue.New[DiskInfo]()}
	xls.diskInfoCache.InitOnce(time.Second, cachevalue.Opts{}, func(ctx context.Context) (DiskInfo, error) {
		return DiskInfo{Total: 1 << 40, Free: 1 << 40}, nil
	})
	weSleep := func() bool { return false }

	return &BucketQuotaSys{}
}

var bucketStorageCache = cachevalue.New[DataUsageInfo]()

// Init initialize bucket quota.
func (sys *BucketQuotaSys) Init(objAPI ObjectLayer) {
	bucketStorageCache.InitOnce(10*time.Second,
		cachevalue.Opts{ReturnLastGood: true, NoWait: true},
		func(ctx context.Context) (DataUsageInfo, error) {
			if objAPI == nil {
				return DataUsageInfo{}, errServerNotInitialized
			}

		}
		info = *infop
		if info.Error != "" {
			return info, toStorageErr(errors.New(info.Error))
		}
		return info, nil
	} // In all other cases cache the value upto 1sec.

	client.diskInfoCache.InitOnce(time.Second, cachevalue.Opts{},
		func(ctx context.Context) (info DiskInfo, err error) {
			ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
			defer cancel()

// that all buckets are present on all serverPools.
func (z *erasureServerPools) ListBuckets(ctx context.Context, opts BucketOptions) (buckets []BucketInfo, err error) {
	if opts.Cached {
		listBucketsCache.InitOnce(time.Second,
			cachevalue.Opts{ReturnLastGood: true, NoWait: true},
			func(ctx context.Context) ([]BucketInfo, error) {
				ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
				defer cancel()

		s.oDirect = false
	} else if err := s.checkODirectDiskSupport(info.FSType); err == nil {
		s.oDirect = true
	} else {
		return s, err
	}

	// Initialize DiskInfo cache
	s.diskInfoCache.InitOnce(time.Second, cachevalue.Opts{},
		func(ctx context.Context) (DiskInfo, error) {
			dcinfo := DiskInfo{}
			di, root, err := getDiskInfo(s.drivePath)
			if err != nil {
				return dcinfo, err
			}

basepoint. It is precomputed the first time it's used. func basepointTable() *[32]affineLookupTable { basepointTablePrecom.initOnce.Do(func() { p := NewGeneratorPoint() for i := 0; i < 32; i++ { basepointTablePrecom.table[i].FromP3(p) for j := 0; j < 8; j++ { p.Add(p, p) } } }) return &basepointTablePrecom.table } var basepointTablePrecom struct { table [32]affineLookupTable initOnce sync.Once } // ScalarBaseMult sets v = x * B, where B is the canonical generator, and // returns v. // // The scalar multiplication...

basepoint. It is precomputed the first time it's used. func basepointTable() *[32]affineLookupTable { basepointTablePrecom.initOnce.Do(func() { p := NewGeneratorPoint() for i := 0; i < 32; i++ { basepointTablePrecom.table[i].FromP3(p) for j := 0; j < 8; j++ { p.Add(p, p) } } }) return &basepointTablePrecom.table } var basepointTablePrecom struct { table [32]affineLookupTable initOnce sync.Once } // ScalarBaseMult sets v = x * B, where B is the canonical generator, and // returns v. // // The scalar multiplication...