// ErrCustomerKeyMD5Mismatch indicates that the SSE-C key MD5 does not match the
	// computed MD5 sum. This means that the client provided either the wrong key for
	// a certain MD5 checksum or the wrong MD5 for a certain key.
	ErrCustomerKeyMD5Mismatch = Errorf("The provided SSE-C key MD5 does not match the computed MD5 of the SSE-C key")

	"github.com/minio/minio/internal/ioutil"
)

// A Reader wraps an io.Reader and computes the MD5 checksum
// of the read content as ETag. Optionally, it also computes
// the SHA256 checksum of the content.
//
// If the reference values for the ETag and content SHA26
// are not empty then it will check whether the computed
// match the reference values.
type Reader struct {
	src         io.Reader
	bytesRead   int64

	return ETag(sum)
}

// VerifyError is an error signaling that a
// computed ETag does not match an expected
// ETag.
type VerifyError struct {
	Expected ETag
	Computed ETag
}

func (v VerifyError) Error() string {
	return fmt.Sprintf("etag: expected ETag %q does not match computed ETag %q", v.Expected, v.Computed)
}

// UUIDHash - use uuid to make md5sum
type UUIDHash struct {
	uuid []byte

	StartTime time.Time   `msg:"startTs"` // Time at which rebalance-start was issued
	EndTime   time.Time   `msg:"stopTs"`  // Time at which rebalance operation completed or rebalance-stop was called
	Status    rebalStatus `msg:"status"`  // Current state of rebalance operation. One of Started|Stopped|Completed|Failed.
}

// rebalanceMeta contains information pertaining to an ongoing rebalance operation.
type rebalanceMeta struct {

		Description:    "The provided 'x-amz-content-sha256' header does not match what was computed.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrContentChecksumMismatch: {
		Code:           "XAmzContentChecksumMismatch",
		Description:    "The provided 'x-amz-checksum' header does not match what was computed.",
		HTTPStatusCode: http.StatusBadRequest,
	},

	// MinIO extensions.
	ErrStorageFull: {

	response, err = s.client.Do(req)
	c.Assert(err, nil)
	if s.signer == signerV4 {
		verifyError(c, response, "XAmzContentSHA256Mismatch", "The provided 'x-amz-content-sha256' header does not match what was computed.", http.StatusBadRequest)
	}
}

// Test deletes multiple objects and verifies server response.
func (s *TestSuiteCommon) TestDeleteMultipleObjects(c *check) {
	// generate a random bucket name.

	}

	// Now, we read the payload and compute its SHA-256 hash.
	_, err = io.ReadFull(cr.reader, cr.buffer)
	if err == io.EOF && size != 0 {
		err = io.ErrUnexpectedEOF
	}
	if err != nil && err != io.EOF {
		cr.err = err
		return n, cr.err
	}

	// Once we have read the entire chunk successfully, we verify
	// that the received signature matches our computed signature.
	cr.chunkSHA256Writer.Write(cr.buffer)

      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

type StatusType string

// Type - replication type enum
type Type int

const (
	// Pending - replication is pending.
	Pending StatusType = "PENDING"

	// Completed - replication completed ok.
	Completed StatusType = "COMPLETED"

	// CompletedLegacy was called "COMPLETE" incorrectly.
	CompletedLegacy StatusType = "COMPLETE"

	// Failed - replication failed.
	Failed StatusType = "FAILED"

	// EncryptKey Encrypts and authenticates a (small) plaintext with the cryptographic key
	// The plaintext must not exceed 1 MB
	EncryptKey(keyID string, plaintext []byte, context Context) ([]byte, error)

	// HMAC computes the HMAC of the given msg and key with the given
	// key ID.
	HMAC(ctx context.Context, keyID string, msg []byte) ([]byte, error)