xhttp "github.com/minio/minio/internal/http"
)

var (
	errLifecycleTooManyRules = Errorf("Lifecycle configuration allows a maximum of 1000 rules")
	errLifecycleNoRule       = Errorf("Lifecycle configuration should have at least one rule")
	errLifecycleDuplicateID  = Errorf("Rule ID must be unique. Found same ID for more than one rule")
	errXMLNotWellFormed      = Errorf("The XML you provided was not well-formed or did not validate against our published schema")

	}

	// Fetch buffer for I/O, returns from the pool if not allocates a new one and returns.
	var buffer []byte
	switch size := data.Size(); {
	case size == 0:
		buffer = make([]byte, 1) // Allocate at least a byte to reach EOF
	case size == -1:
		if size := data.ActualSize(); size > 0 && size < fi.Erasure.BlockSize {
			// Account for padding and forced compression overhead and encryption.

To perform bi-directional replication, repeat the above process on the target site - this time setting the source bucket as the replication target. It is recommended that replication be run in a system with at least two CPU's available to the process, so that replication can run in its own thread.

![put](https://raw.githubusercontent.com/minio/minio/master/docs/bucket/replication/PUT_bucket_replication.png)

- MinIO then checks if there are any policies [explicitly associated](#managing-usergroup-access-policy) with the user or their groups.
- On finding at least one associated policy, MinIO generates temporary credentials for the user storing the list of groups in a cryptographically secure session token. The temporary access key, secret key and session token are returned to the user.

		New: func() interface{} {
			b := disk.AlignedBlock(SmallBlock)
			return &b
		},
	}
)

// WriteOnCloser implements io.WriteCloser and always
// executes at least one write operation if it is closed.
//
// This can be useful within the context of HTTP. At least
// one write operation must happen to send the HTTP headers
// to the peer.
type WriteOnCloser struct {
	io.Writer
	hasWritten bool
}

	"strings"
)

var (
	errReplicationTooManyRules          = Errorf("Replication configuration allows a maximum of 1000 rules")
	errReplicationNoRule                = Errorf("Replication configuration should have at least one rule")
	errReplicationUniquePriority        = Errorf("Replication configuration has duplicate priority")
	errRoleArnMissingLegacy             = Errorf("Missing required parameter `Role` in ReplicationConfiguration")

		p := d.Cache[parent.Key()]
		p.addChild(hash)
		d.Cache[parent.Key()] = p
	}
}

// reduceChildrenOf will reduce the recursive number of children to the limit
// by compacting the children with the least number of objects.
func (d *dataUsageCache) reduceChildrenOf(path dataUsageHash, limit int, compactSelf bool) {
	e, ok := d.Cache[path.Key()]
	if !ok {
		return
	}
	if e.Compacted {
		return
	}

	Name   string
	Region string
}

var validRegionRegex = regexp.MustCompile("^[a-zA-Z][a-zA-Z0-9-_-]+$")

// validSiteNameRegex - allows lowercase letters, digits and '-', starts with
// letter. At least 2 characters long.
var validSiteNameRegex = regexp.MustCompile("^[a-z][a-z0-9-]+$")

// LookupSite - get site related configuration. Loads configuration from legacy
// region sub-system as well.

			// sleep for some time and try again.
			duration := time.Duration(r.Float64() * float64(globalCallhomeConfig.FrequencyDur()))
			if duration < time.Second {
				// Make sure to sleep at least a second to avoid high CPU ticks.
				duration = time.Second
			}
			time.Sleep(duration)
		}
	}()
}

func runCallhome(ctx context.Context, objAPI ObjectLayer) bool {

		if len(entries) != h.batchSize {
			if len(h.logCh) > 0 || len(globalBuffer) > 0 || len(entries) == 0 {
				continue
			}

			if h.batchSize > 1 {
				// If we are doing batching, we should wait
				// at least one second before sending.
				// Even if there is nothing in the queue.
				if time.Since(lastBatchProcess).Seconds() < 1 {
					continue
				}
			}
		}

		lastBatchProcess = time.Now()

	retry: