Writer       io.WriteCloser `json:"-" msg:"-"`
	Reader       *hash.Reader   `json:"-" msg:"-"`
	PutObjReader *PutObjReader  `json:"-" msg:"-"`

	metadataOnly bool
	versionOnly  bool // adds a new version, only used by CopyObject
	keyRotation  bool

	// Date and time when the object was last accessed.
	AccTime time.Time

	Legacy bool // indicates object on disk is in legacy data format

// an error is returned with information about the running heal
// sequence. However, if the force-start flag is provided, the server
// aborts the running heal sequence and starts a new one.
func (a adminAPIHandlers) HealHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.HealAdminAction)
	if objectAPI == nil {
		return

	v := strings.SplitN(s, ":", 2)
	if len(v) != 2 {
		return nil, errors.New("kms: invalid secret key format")
	}

	keyID, b64Key := v[0], v[1]
	key, err := base64.StdEncoding.DecodeString(b64Key)
	if err != nil {
		return nil, err
	}
	return NewBuiltin(keyID, key)
}

// NewBuiltin returns a single-key KMS that derives new DEKs from the
// given key.
func NewBuiltin(keyID string, key []byte) (*KMS, error) {

// BytePoolCap implements a leaky pool of []byte in the form of a bounded channel.
type BytePoolCap struct {
	c    chan []byte
	w    int
	wcap int
}

// NewBytePoolCap creates a new BytePool bounded to the given maxSize, with new
// byte arrays sized based on width.
func NewBytePoolCap(maxSize uint64, width int, capwidth int) (bp *BytePoolCap) {
	if capwidth > 0 && capwidth < 64 {

	getPeerMetricsRPC              = grid.NewSingleHandler[*grid.MSS, *grid.Array[*MetricV2]](grid.HandlerGetPeerMetrics, grid.NewMSS, aoMetricsGroup.New)
	getResourceMetricsRPC          = grid.NewSingleHandler[*grid.MSS, *grid.Array[*MetricV2]](grid.HandlerGetResourceMetrics, grid.NewMSS, aoMetricsGroup.New)

	"github.com/smallnest/ringbuffer"
)

func main() {
	rb := ringbuffer.New(1024)

	// write
	rb.Write([]byte("abcd"))
	fmt.Println(rb.Length())
	fmt.Println(rb.Free())

	// read
	buf := make([]byte, 4)
	rb.Read(buf)
	fmt.Println(string(buf))
}
```

It is possible to use an existing buffer with by replacing `New` with `NewBuffer`.


# Blocking vs Non-blocking

	for {
		stream, err := sr.NextStream()
		if err != nil {
			if err == io.EOF {
				if extracted {
					return nil
				}
				return errors.New("no data found on stream")
			}
			if errors.Is(err, estream.ErrNoKey) {
				if stream.Name == "inspect.zip" {
					return errors.New("incorrect private key")
				}
				if err := stream.Skip(); err != nil {
					return fmt.Errorf("stream skip: %w", err)
				}
				continue
			}

dd if=/dev/urandom bs=1 count=7048531 of=/tmp/7048531.txt
dd if=/dev/urandom bs=1 count=2847391 of=/tmp/2847391.txt

sudo apt install jq -y

	}

	return rulesCopy
}

// Union - returns union with given rules as new rules.
func (rules Rules) Union(rules2 Rules) Rules {
	nrules := rules.Clone()

	for pattern, targetIDSet := range rules2 {
		nrules[pattern] = nrules[pattern].Union(targetIDSet)
	}

	return nrules
}

// Difference - returns difference with given rules as new rules.
func (rules Rules) Difference(rules2 Rules) Rules {
	nrules := make(Rules)

		{
			authT: authTypeJWT,
			pass:  false,
		},
		// Test 9 - unknown auth header is not supported s3 type.
		{
			authT: authTypeUnknown,
			pass:  false,
		},
		// Test 10 - some new auth type is not supported s3 type.
		{
			authT: authType(9),
			pass:  false,
		},
	}
	// Validate all the test cases.
	for i, tt := range testCases {
		ok := isSupportedS3AuthType(tt.authT)