lotus/chain/store/splitstore/snoop_bolt.go

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package splitstore
import (
"time"
"golang.org/x/xerrors"
cid "github.com/ipfs/go-cid"
bolt "go.etcd.io/bbolt"
"github.com/filecoin-project/go-state-types/abi"
)
type BoltTrackingStore struct {
db *bolt.DB
bucketId []byte
}
var _ TrackingStore = (*BoltTrackingStore)(nil)
func NewBoltTrackingStore(path string) (*BoltTrackingStore, error) {
db, err := bolt.Open(path, 0644,
&bolt.Options{
Timeout: 1 * time.Second,
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NoSync: true,
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})
if err != nil {
return nil, err
}
bucketId := []byte("snoop")
err = db.Update(func(tx *bolt.Tx) error {
_, err := tx.CreateBucketIfNotExists(bucketId)
if err != nil {
return xerrors.Errorf("error creating bolt db bucket %s: %w", string(bucketId), err)
}
return nil
})
if err != nil {
db.Close() //nolint:errcheck
return nil, err
}
return &BoltTrackingStore{db: db, bucketId: bucketId}, nil
}
func (s *BoltTrackingStore) Put(cid cid.Cid, epoch abi.ChainEpoch) error {
val := epochToBytes(epoch)
return s.db.Batch(func(tx *bolt.Tx) error {
b := tx.Bucket(s.bucketId)
return b.Put(cid.Hash(), val)
})
}
func (s *BoltTrackingStore) PutBatch(cids []cid.Cid, epoch abi.ChainEpoch) error {
val := epochToBytes(epoch)
return s.db.Batch(func(tx *bolt.Tx) error {
b := tx.Bucket(s.bucketId)
for _, cid := range cids {
err := b.Put(cid.Hash(), val)
if err != nil {
return err
}
}
return nil
})
}
func (s *BoltTrackingStore) Get(cid cid.Cid) (epoch abi.ChainEpoch, err error) {
err = s.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(s.bucketId)
val := b.Get(cid.Hash())
if val == nil {
return xerrors.Errorf("missing tracking epoch for %s", cid)
}
epoch = bytesToEpoch(val)
return nil
})
return epoch, err
}
func (s *BoltTrackingStore) Delete(cid cid.Cid) error {
return s.db.Batch(func(tx *bolt.Tx) error {
b := tx.Bucket(s.bucketId)
return b.Delete(cid.Hash())
})
}
func (s *BoltTrackingStore) ForEach(f func(cid.Cid, abi.ChainEpoch) error) error {
return s.db.View(func(tx *bolt.Tx) error {
b := tx.Bucket(s.bucketId)
return b.ForEach(func(k, v []byte) error {
cid := cid.NewCidV1(cid.Raw, k)
epoch := bytesToEpoch(v)
return f(cid, epoch)
})
})
}
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func (s *BoltTrackingStore) Sync() error {
return s.db.Sync()
}
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func (s *BoltTrackingStore) Close() error {
return s.db.Close()
}