maxWorkersWithBatchEvents = 4

	// the suffix for the configured queue dir where the logs will be persisted.
	httpLoggerExtension = ".http.log"
)

const (
	statusOffline = iota
	statusOnline
	statusClosed
)

var (
	logChBuffers = make(map[string]chan interface{})
	logChLock    = sync.Mutex{}
)

// Config http logger target
type Config struct {

type ChecksumType uint32

const (

	// ChecksumTrailing indicates the checksum will be sent in the trailing header.
	// Another checksum type will be set.
	ChecksumTrailing ChecksumType = 1 << iota

	// ChecksumSHA256 indicates a SHA256 checksum.
	ChecksumSHA256
	// ChecksumSHA1 indicates a SHA-1 checksum.
	ChecksumSHA1
	// ChecksumCRC32 indicates a CRC32 checksum with IEEE table.
	ChecksumCRC32

		queries: []string{"analytics", ""},
	},
}

// Set of s3 handler options as bit flags.
type s3HFlag uint8

const (
	// when provided, disables Gzip compression.
	noGZS3HFlag = 1 << iota

	// when provided, enables only tracing of headers. Otherwise, both headers
	// and body are traced.
	traceHdrsS3HFlag

	// when provided, disables throttling via the `maxClients` middleware.
	noThrottleS3HFlag

		return
	}

	for _, exp := range f.ExpFunc {
		if exp.Func.Name.Name == n.Name.Name {
			exp.Func = n
			break
		}
	}
}

type astContext int

const (
	ctxProg astContext = iota
	ctxEmbedType
	ctxType
	ctxStmt
	ctxExpr
	ctxField
	ctxParam
	ctxAssign2 // assignment of a single expression to two variables
	ctxSwitch
	ctxTypeSwitch
	ctxFile
	ctxDecl
	ctxSpec

				relation.References = append(relation.References, &Reference{
					PrimaryKey: rf,
					ForeignKey: f,
				})
			}
		}
	}
}

type guessLevel int

const (
	guessGuess guessLevel = iota
	guessBelongs
	guessEmbeddedBelongs
	guessHas
	guessEmbeddedHas
)

func (schema *Schema) guessRelation(relation *Relationship, field *Field, cgl guessLevel) {
	var (

	}
	return strings.HasPrefix(descendant, arg)
}

// MetricType - represents the type of a metric.
type MetricType int

const (
	// CounterMT - represents a counter metric.
	CounterMT MetricType = iota
	// GaugeMT - represents a gauge metric.
	GaugeMT
	// HistogramMT - represents a histogram metric.
	HistogramMT
)

// rangeL - represents a range label.
const rangeL = "range"

// object should be returned by ObjectLayer.Walk method
type WalkVersionsSortOrder uint8

const (
	// WalkVersionsSortAsc - Sort in ascending order of ModTime
	WalkVersionsSortAsc WalkVersionsSortOrder = iota
	// WalkVersionsSortDesc - Sort in descending order of ModTime
	WalkVersionsSortDesc
)

// ObjectOptions represents object options for ObjectLayer object operations
type ObjectOptions struct {

	resyncID     string
	resyncBefore time.Time
}

// ResyncStatusType status of resync operation
type ResyncStatusType int

const (
	// NoResync - no resync in progress
	NoResync ResyncStatusType = iota
	// ResyncPending - resync pending
	ResyncPending
	// ResyncCanceled - resync canceled
	ResyncCanceled
	// ResyncStarted -  resync in progress
	ResyncStarted
	// ResyncCompleted -  resync finished

		logger.Fatal(err, "Unable to initialize server")
	}
	return gz
}()

// Set of handler options as bit flags
type hFlag uint8

const (
	// this flag disables gzip compression of responses
	noGZFlag = 1 << iota

	// this flag enables tracing body and headers instead of just headers
	traceAllFlag

	// pass this flag to skip checking if object layer is available
	noObjLayerFlag
)

	Sign       []byte `msg:"s"`
	OldDataDir string `msg:"od"` // contains '<uuid>', it is designed to be passed as value to Delete(bucket, pathJoin(object, dataDir))
}

const (
	checkPartUnknown int = iota

	// Changing the order can cause a data loss
	// when running two nodes with incompatible versions
	checkPartSuccess
	checkPartDiskNotFound
	checkPartVolumeNotFound
	checkPartFileNotFound