type BucketStatsMap struct {
	Stats     map[string]BucketStats
	Timestamp time.Time
}

// BucketStats bucket statistics
type BucketStats struct {
	Uptime           int64                  `json:"uptime"`
	ReplicationStats BucketReplicationStats `json:"currStats"`  // current replication stats since cluster startup
	QueueStats       ReplicationQueueStats  `json:"queueStats"` // replication queue stats

		Timestamp: UTCNow(),
	}
	for k, replicationStats := range replicationStatsList {
		bucketStatsMap.Stats[k] = BucketStats{
			ReplicationStats: replicationStats,
			ProxyStats:       globalReplicationStats.Load().getProxyStats(k),
		}
	}

	replicationStats = append(replicationStats, bucketStatsMap)
	return replicationStats
}

func (s *peerRESTServer) GetAllBucketStatsHandler(mss *grid.MSS) (*BucketStatsMap, *grid.RemoteErr) {
	replicationStats := globalReplicationStats.Load().GetAll()
	bucketStatsMap := make(map[string]BucketStats, len(replicationStats))
	for k, v := range replicationStats {
		bucketStatsMap[k] = BucketStats{
			ReplicationStats: v,
			ProxyStats:       globalReplicationStats.Load().getProxyStats(k),
		}
	}

	ReplicateHealDelete = "replicate:heal:delete"
)

var (
	globalReplicationPool  = once.NewSingleton[ReplicationPool]()
	globalReplicationStats atomic.Pointer[ReplicationStats]
)

// ReplicationPool describes replication pool
type ReplicationPool struct {
	// atomic ops:
	activeWorkers    int32
	activeLrgWorkers int32
	activeMRFWorkers int32