generated from mpppk/cli-template
/
bolt_meta.go
65 lines (54 loc) · 1.45 KB
/
bolt_meta.go
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package repoimpl
import (
"fmt"
"github.com/mpppk/imagine/infra/blt"
"github.com/blang/semver/v4"
"github.com/mpppk/imagine/domain/repository"
bolt "go.etcd.io/bbolt"
)
type BoltMeta struct {
base *blt.Repository
bucketNames []string
}
const (
versionKey = "version"
)
func (b *BoltMeta) GetDBVersion() (v *semver.Version, exist bool, err error) {
err = b.loBucketFunc(func(bucket *bolt.Bucket) error {
rawV := bucket.Get([]byte(versionKey))
if rawV == nil {
return nil
}
version, err := semver.Parse(string(rawV))
if err != nil {
return fmt.Errorf("failed to parse version from %s: %w", string(rawV), err)
}
v = &version
exist = true
return nil
})
return
}
func (b *BoltMeta) SetDBVersion(version *semver.Version) error {
return b.bucketFunc(func(bucket *bolt.Bucket) error {
if err := bucket.Put([]byte(versionKey), []byte(version.String())); err != nil {
return fmt.Errorf("failed to put version: %w", err)
}
return nil
})
}
func NewBoltMeta(b *bolt.DB) repository.Meta {
return &BoltMeta{
base: blt.NewRepository(b),
bucketNames: blt.CreateMetaBucketNames(),
}
}
func (b *BoltMeta) Init() error {
return b.base.CreateBucketIfNotExist(blt.CreateMetaBucketNames())
}
func (b *BoltMeta) loBucketFunc(f func(bucket *bolt.Bucket) error) error {
return b.base.LoBucketFunc(b.bucketNames, f)
}
func (b *BoltMeta) bucketFunc(f func(bucket *bolt.Bucket) error) error {
return b.base.BucketFunc(b.bucketNames, f)
}