// ChecksumSHA256 indicates a SHA256 checksum.
	ChecksumSHA256
	// ChecksumSHA1 indicates a SHA-1 checksum.
	ChecksumSHA1
	// ChecksumCRC32 indicates a CRC32 checksum with IEEE table.
	ChecksumCRC32
	// ChecksumCRC32C indicates a CRC32 checksum with Castagnoli table.
	ChecksumCRC32C
	// ChecksumInvalid indicates an invalid checksum.
	ChecksumInvalid
	// ChecksumMultipart indicates the checksum is from a multipart upload.
	ChecksumMultipart

		// insert or update statement
		if target.updateStmt, err = target.db.Prepare(fmt.Sprintf(psqlUpdateRow, target.args.Table)); err != nil {
			return err
		}
		// delete statement
		if target.deleteStmt, err = target.db.Prepare(fmt.Sprintf(psqlDeleteRow, target.args.Table)); err != nil {
			return err
		}
	case event.AccessFormat:
		// insert statement

| `minio_cluster_audit_target_queue_length` | `gauge`   | Number of unsent messages in queue for target            | `target_id` |
| `minio_cluster_audit_total_messages`      | `counter` | Total number of messages sent since start                | `target_id` |

### `/cluster/usage/objects`

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "max(minio_node_drive_total{job=~\"$scrape_jobs\",server=\"$server\"})",
          "format": "table",
          "hide": false,
          "instant": true,
          "interval": "",
          "intervalFactor": 1,
          "legendFormat": "",
          "metric": "process_start_time_seconds",

	// After this connection will be StateConnected or StateConnectionError.
	StateConnecting

	// StateConnected is the state when the connection has been established and is considered stable.
	// If the connection is lost, state will switch to StateConnecting.
	StateConnected

	// StateConnectionError is the state once a connection attempt has been made, and it failed.

			Value: cfg.DSN,
		},
		config.KV{
			Key:   target.MySQLTable,
			Value: cfg.Table,
		},
		config.KV{
			Key:   target.MySQLHost,
			Value: cfg.Host.String(),
		},
		config.KV{
			Key:   target.MySQLPort,
			Value: cfg.Port,
		},
		config.KV{
			Key:   target.MySQLUsername,
			Value: cfg.User,
		},
		config.KV{
			Key:   target.MySQLPassword,

			Sensitive:   true,
		},
		config.HelpKV{
			Key:         target.MySQLTable,
			Description: "DB table name to store/update events, table is auto-created",
			Type:        "string",
		},
		config.HelpKV{
			Key:         target.MySQLFormat,
			Description: formatComment,
			Type:        "namespace*|access",
		},
		config.HelpKV{
			Key:         target.MySQLQueueDir,
			Description: queueDirComment,

	defer logger.AuditLog(ctx, w, r, claims)

	// Check auth here (otherwise r.Form will have unexpected values from
	// the call to `parseForm` below), but return failure only after we are
	// able to validate that it is a valid STS request, so that we are able
	// to send an appropriate audit log.
	user, apiErrCode := checkAssumeRoleAuth(ctx, r)

	if err := parseForm(r); err != nil {

	// is used when autogenerating new credentials.
	// There is no max length enforcement for secret keys
	secretKeyMaxLen = 40

	// Alpha numeric table used for generating access keys.
	alphaNumericTable = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"

	// Total length of the alpha numeric table.
	alphaNumericTableLen = byte(len(alphaNumericTable))
)

// Common errors generated for access and secret key validation.
var (

		if cErr != nil {
			return nil, cErr
		}

		mysqlArgs := target.MySQLArgs{
			Enable:             enabled,
			Format:             env.Get(formatEnv, kv.Get(target.MySQLFormat)),
			DSN:                env.Get(dsnStringEnv, kv.Get(target.MySQLDSNString)),
			Table:              env.Get(tableEnv, kv.Get(target.MySQLTable)),