oracle

package
Version: v2.0.5+incompatible Latest Latest
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Published: Jul 6, 2018 License: Apache-2.0 Imports: 2 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func ComposeTS

func ComposeTS(physical, logical int64) uint64

ComposeTS creates a ts from physical and logical parts.

func EncodeTSO

func EncodeTSO(ts int64) uint64

EncodeTSO encodes a millisecond into tso.

func ExtractPhysical

func ExtractPhysical(ts uint64) int64

ExtractPhysical returns a ts's physical part.

func GetPhysical

func GetPhysical(t time.Time) int64

GetPhysical returns physical from an instant time with millisecond precision.

Types

type Future

type Future interface {
	Wait() (uint64, error)
}

Future is a future which promises to return a timestamp.

type Oracle

type Oracle interface {
	GetTimestamp(ctx context.Context) (uint64, error)
	GetTimestampAsync(ctx context.Context) Future
	IsExpired(lockTimestamp uint64, TTL uint64) bool
	Close()
}

Oracle is the interface that provides strictly ascending timestamps.

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