eventtoken

Documentation

Overview

Package eventtoken includes utility methods for event token handling.

Index

• func Fresher(ev1, ev2 *querypb.EventToken) int
• func Minimum(ev1, ev2 *querypb.EventToken) *querypb.EventToken

Functions

func Fresher

func Fresher(ev1, ev2 *querypb.EventToken) int

Fresher compares two event tokens. It returns a negative number if ev1<ev2, zero if they're equal, and a positive number if ev1>ev2. In case of doubt (we don't have enough information to know for sure), it returns a negative number.

func Minimum

func Minimum(ev1, ev2 *querypb.EventToken) *querypb.EventToken

Minimum returns an event token that is guaranteed to happen before both provided EventToken objects.

FIXME(alainjobart) for now, we always strip the shard and position, and only look at timestamp. It is only used across shards so it's not a big deal. When we compare values within a shard, we'll have to fix this.