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54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
package store
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import (
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"fmt"
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"path/filepath"
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"github.com/hashicorp/raft-boltdb"
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)
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// Log is an object that can return information about the Raft log.
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type Log struct {
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path string
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}
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// NewLog returns an instantiated Log object.
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func NewLog(dir string) *Log {
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return &Log{
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path: filepath.Join(dir, raftDBPath),
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}
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}
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// FirstIndex returns the first index written. 0 for no entries.
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func (l *Log) FirstIndex() (uint64, error) {
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bs, err := raftboltdb.NewBoltStore(l.path)
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if err != nil {
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return 0, fmt.Errorf("new bolt store: %s", err)
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}
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defer bs.Close()
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return bs.FirstIndex()
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}
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// LastIndex returns the last index written. 0 for no entries.
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func (l *Log) LastIndex() (uint64, error) {
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bs, err := raftboltdb.NewBoltStore(l.path)
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if err != nil {
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return 0, fmt.Errorf("new bolt store: %s", err)
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}
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defer bs.Close()
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return bs.LastIndex()
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}
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// Indexes returns the first and last indexes.
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func (l *Log) Indexes() (uint64, uint64, error) {
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fi, err := l.FirstIndex()
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if err != nil {
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return 0, 0, fmt.Errorf("failed to get first index: %s", err)
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}
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li, err := l.LastIndex()
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if err != nil {
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return 0, 0, fmt.Errorf("failed to get last index: %s", err)
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}
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return fi, li, nil
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}
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