// Otherwise returns zero value of time.Time and false.
func (r restoreObjStatus) Expiry() (time.Time, bool) {
	if r.Ongoing() {
		return time.Time{}, false
	}
	return r.expiry, true
}

// Ongoing returns true if restore-object is ongoing.
func (r restoreObjStatus) Ongoing() bool {
	return r.ongoing
}

// OnDisk returns true if restored object contents exist in MinIO. Otherwise returns false.

 *
 * Canceling a task that is waiting to execute prevents that upcoming execution. Canceling a task
 * that is currently executing does not impact the ongoing run, but it does prevent a recurrence
 * from being scheduled.
 *
 * Tasks may opt-out of cancellation with `cancelable = false`. Such tasks will recur until they
 * decide not to by returning -1L.
 *
 * Task Queues

// rebalanceMeta contains information pertaining to an ongoing rebalance operation.
type rebalanceMeta struct {
	cancel          context.CancelFunc `msg:"-"` // to be invoked on rebalance-stop
	lastRefreshedAt time.Time          `msg:"-"`
	StoppedAt       time.Time          `msg:"stopTs"` // Time when rebalance-stop was issued.
	ID              string             `msg:"id"`     // ID of the ongoing rebalance operation

```
...
        "MetaUsr": {
         "X-Amz-Restore-Expiry-Days": "4",
          "X-Amz-Restore-Request-Date": "Mon, 22 Feb 2021 21:10:09 GMT",
          "x-amz-restore": "ongoing-request=false, expiry-date=Sat, 27 Feb 2021 00:00:00 GMT",
...
```

### Encrypted/Object locked objects

}

// rebalanceAdminStatus holds rebalance status related information exported to mc, console, etc.
type rebalanceAdminStatus struct {
	ID        string                // identifies the ongoing rebalance operation by a uuid
	Pools     []rebalancePoolStatus `json:"pools"` // contains all pools, including inactive
	StoppedAt time.Time             `json:"stoppedAt"`
}

 * a mix of values.
 *
 * Clients call [get] to read a snapshot of an entry. The read will observe the value at the time
 * that [get] was called. Updates and removals after the call do not impact ongoing reads.
 *
 * This class is tolerant of some I/O errors. If files are missing from the filesystem, the
 * corresponding entries will be dropped from the cache. If an error occurs while writing a cache

	// set restore status for transitioned object
	restoreHdr, ok := fi.Metadata[xhttp.AmzRestore]
	if ok {
		if restoreStatus, err := parseRestoreObjStatus(restoreHdr); err == nil {
			objInfo.RestoreOngoing = restoreStatus.Ongoing()
			objInfo.RestoreExpires, _ = restoreStatus.Expiry()
		}
	}
	objInfo.Checksum = fi.Checksum
	objInfo.decryptPartsChecksums(nil)
	objInfo.Inlined = fi.InlineData()
	// Success.
	return objInfo
}

	ReplicateDecisionStr       string                            // stringified representation of replication decision for each target
	Targets                    map[string]replication.StatusType // map of ARN->replication status for ongoing replication activity
	PurgeTargets               map[string]VersionPurgeStatusType // map of ARN->VersionPurgeStatus for all the targets

       */
      private final AbstractService service;

      /**
       * This lock is used to ensure safe and correct cancellation, it ensures that a new task is
       * not scheduled while a cancel is ongoing. Also it protects the currentFuture variable to
       * ensure that it is assigned atomically with being scheduled.
       */
      private final ReentrantLock lock = new ReentrantLock();

		return
	}

	pools, ok := objectAPI.(*erasureServerPools)
	if !ok {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	// Cancel any ongoing rebalance operation
	globalNotificationSys.StopRebalance(r.Context())
	writeSuccessResponseHeadersOnly(w)
	adminLogIf(ctx, pools.saveRebalanceStats(GlobalContext, 0, rebalSaveStoppedAt))