forked from pydio/cells
/
bolt.go
208 lines (171 loc) · 4.61 KB
/
bolt.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package docstore
import (
"context"
"os"
"strings"
"time"
json "github.com/pydio/cells/x/jsonx"
bolt "github.com/etcd-io/bbolt"
"github.com/micro/go-micro/errors"
"go.uber.org/zap"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/proto/docstore"
)
var (
// Jobs Configurations
storeBucketString = "store-"
)
type BoltStore struct {
// Internal DB
db *bolt.DB
// For Testing purpose : delete file after closing
DeleteOnClose bool
// Path to the DB file
DbPath string
}
func NewBoltStore(fileName string, deleteOnClose ...bool) (*BoltStore, error) {
bs := &BoltStore{
DbPath: fileName,
}
if len(deleteOnClose) > 0 && deleteOnClose[0] {
bs.DeleteOnClose = true
}
options := bolt.DefaultOptions
options.Timeout = 5 * time.Second
db, err := bolt.Open(fileName, 0644, options)
if err != nil {
return nil, err
}
bs.db = db
return bs, nil
}
func (b *BoltStore) Close() error {
err := b.db.Close()
if b.DeleteOnClose {
os.Remove(b.DbPath)
}
return err
}
func (s *BoltStore) GetStore(tx *bolt.Tx, storeID string, mode string) (*bolt.Bucket, error) {
key := []byte(storeBucketString + storeID)
if mode == "read" {
if bucket := tx.Bucket(key); bucket != nil {
return bucket, nil
} else {
return nil, errors.NotFound(common.ServiceDocStore, "Store Not Found")
}
} else {
return tx.CreateBucketIfNotExists(key)
}
}
func (s *BoltStore) PutDocument(storeID string, doc *docstore.Document) error {
err := s.db.Update(func(tx *bolt.Tx) error {
log.Logger(context.Background()).Debug("Bolt:PutDocument", zap.String("storeId", storeID), zap.Any("doc", doc))
bucket, err := s.GetStore(tx, storeID, "write")
if err != nil {
return err
}
jsonData, err := json.Marshal(doc)
if err != nil {
return err
}
return bucket.Put([]byte(doc.ID), jsonData)
})
return err
}
func (s *BoltStore) GetDocument(storeID string, docId string) (*docstore.Document, error) {
j := &docstore.Document{}
e := s.db.View(func(tx *bolt.Tx) error {
bucket, err := s.GetStore(tx, storeID, "read")
if err != nil {
return err
}
data := bucket.Get([]byte(docId))
if data == nil {
return errors.NotFound(common.ServiceDocStore, "Doc ID not found")
}
err = json.Unmarshal(data, j)
if err != nil {
return errors.InternalServerError(common.ServiceDocStore, "Cannot deserialize document")
}
return nil
})
if e != nil {
return nil, e
}
return j, nil
}
func (s *BoltStore) DeleteDocument(storeID string, docID string) error {
return s.db.Update(func(tx *bolt.Tx) error {
bucket, err := s.GetStore(tx, storeID, "write")
if err != nil {
return err
}
return bucket.Delete([]byte(docID))
})
}
func (s *BoltStore) ListDocuments(storeID string, query *docstore.DocumentQuery) (chan *docstore.Document, chan bool, error) {
res := make(chan *docstore.Document)
done := make(chan bool, 1)
go func() {
s.db.View(func(tx *bolt.Tx) error {
defer func() {
done <- true
close(done)
}()
bucket, e := s.GetStore(tx, storeID, "read")
if e != nil {
return e
}
c := bucket.Cursor()
for k, v := c.First(); k != nil; k, v = c.Next() {
j := &docstore.Document{}
err := json.Unmarshal(v, j)
if err != nil {
continue
}
if query != nil && query.Owner != "" && j.Owner != query.Owner {
continue
}
res <- j
}
return nil
})
}()
return res, done, nil
}
// ListStores list all buckets
func (s *BoltStore) ListStores() ([]string, error) {
var stores []string
e := s.db.View(func(tx *bolt.Tx) error {
return tx.ForEach(func(name []byte, b *bolt.Bucket) error {
n := string(name)
if strings.HasPrefix(n, storeBucketString) {
// This is a bucket
stores = append(stores, strings.TrimPrefix(n, storeBucketString))
}
return nil
})
})
return stores, e
}