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此仓库是为了提升国内下载速度的镜像仓库,每日同步一次。 原始仓库: https://github.com/canonical/go-dqlite
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range.go 1.37 KB
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package store
import (
"github.com/hashicorp/raft"
"github.com/pkg/errors"
)
// DefaultRange returns a Range spanning all available indexes.
func DefaultRange(logs raft.LogStore) (*Range, error) {
first, err := logs.FirstIndex()
if err != nil {
return nil, errors.Wrap(err, "failed to get first index")
}
last, err := logs.LastIndex()
if err != nil {
return nil, errors.Wrap(err, "failed to get last index")
}
return &Range{First: first, Last: last}, nil
}
// HeadRange returns a range that includes only the first n entries.
func HeadRange(logs raft.LogStore, n int) (*Range, error) {
first, err := logs.FirstIndex()
if err != nil {
return nil, errors.Wrap(err, "failed to get first index")
}
last, err := logs.LastIndex()
if err != nil {
return nil, errors.Wrap(err, "failed to get last index")
}
if first+uint64(n) < last {
last = first + uint64(n)
}
return &Range{First: first, Last: last}, nil
}
// TailRange returns a range that includes only the last n entries.
func TailRange(logs raft.LogStore, n int) (*Range, error) {
last, err := logs.LastIndex()
if err != nil {
return nil, errors.Wrap(err, "failed to get last index")
}
first := uint64(0)
if last > uint64(n) {
first = last - uint64(n)
}
return &Range{First: first, Last: last}, nil
}
// Range contains the first and last index of a dump.
type Range struct {
First uint64
Last uint64
}
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https://gitee.com/mirrors/go-dqlite.git
git@gitee.com:mirrors/go-dqlite.git
mirrors
go-dqlite
go-dqlite
v0.2.2

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