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objectstorage.go
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objectstorage.go
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/*
* Copyright 2019 Insolar
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package storage
import (
"context"
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/core/message"
"github.com/insolar/insolar/ledger/storage/index"
"github.com/insolar/insolar/ledger/storage/jet"
"github.com/insolar/insolar/ledger/storage/record"
)
// ObjectStorage returns objects and their meta
//go:generate minimock -i github.com/insolar/insolar/ledger/storage.ObjectStorage -o ./ -s _mock.go
type ObjectStorage interface {
GetBlob(ctx context.Context, jetID core.RecordID, id *core.RecordID) ([]byte, error)
SetBlob(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, blob []byte) (*core.RecordID, error)
GetRecord(ctx context.Context, jetID core.RecordID, id *core.RecordID) (record.Record, error)
SetRecord(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, rec record.Record) (*core.RecordID, error)
SetMessage(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, genericMessage core.Message) error
IterateIndexIDs(
ctx context.Context,
jetID core.RecordID,
handler func(id core.RecordID) error,
) error
GetObjectIndex(
ctx context.Context,
jetID core.RecordID,
id *core.RecordID,
forupdate bool,
) (*index.ObjectLifeline, error)
SetObjectIndex(
ctx context.Context,
jetID core.RecordID,
id *core.RecordID,
idx *index.ObjectLifeline,
) error
RemoveObjectIndex(
ctx context.Context,
jetID core.RecordID,
ref *core.RecordID,
) error
}
type objectStorage struct {
DB DBContext `inject:""`
PlatformCryptographyScheme core.PlatformCryptographyScheme `inject:""`
}
func NewObjectStorage() ObjectStorage {
return new(objectStorage)
}
// GetBlob returns binary value stored by record ID.
// TODO: switch from reference to passing blob id for consistency - @nordicdyno 6.Dec.2018
func (os *objectStorage) GetBlob(ctx context.Context, jetID core.RecordID, id *core.RecordID) ([]byte, error) {
var (
blob []byte
err error
)
err = os.DB.View(ctx, func(tx *TransactionManager) error {
blob, err = tx.GetBlob(ctx, jetID, id)
return err
})
if err != nil {
return nil, err
}
return blob, nil
}
// SetBlob saves binary value for provided pulse.
func (os *objectStorage) SetBlob(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, blob []byte) (*core.RecordID, error) {
var (
id *core.RecordID
err error
)
err = os.DB.Update(ctx, func(tx *TransactionManager) error {
id, err = tx.SetBlob(ctx, jetID, pulseNumber, blob)
return err
})
if err != nil {
return nil, err
}
return id, nil
}
// GetRecord wraps matching transaction manager method.
func (os *objectStorage) GetRecord(ctx context.Context, jetID core.RecordID, id *core.RecordID) (record.Record, error) {
var (
fetchedRecord record.Record
err error
)
err = os.DB.View(ctx, func(tx *TransactionManager) error {
fetchedRecord, err = tx.GetRecord(ctx, jetID, id)
return err
})
if err != nil {
return nil, err
}
return fetchedRecord, nil
}
// SetRecord wraps matching transaction manager method.
func (os *objectStorage) SetRecord(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, rec record.Record) (*core.RecordID, error) {
var (
id *core.RecordID
err error
)
err = os.DB.Update(ctx, func(tx *TransactionManager) error {
id, err = tx.SetRecord(ctx, jetID, pulseNumber, rec)
return err
})
if err != nil {
return nil, err
}
return id, nil
}
// SetMessage persists message to the database
func (os *objectStorage) SetMessage(ctx context.Context, jetID core.RecordID, pulseNumber core.PulseNumber, genericMessage core.Message) error {
_, prefix := jet.Jet(jetID)
messageBytes := message.ToBytes(genericMessage)
hw := os.PlatformCryptographyScheme.ReferenceHasher()
_, err := hw.Write(messageBytes)
if err != nil {
return err
}
hw.Sum(nil)
return os.DB.set(
ctx,
prefixkey(scopeIDMessage, prefix, pulseNumber.Bytes(), hw.Sum(nil)),
messageBytes,
)
}
// IterateIndexIDs iterates over index IDs on provided Jet ID.
func (os *objectStorage) IterateIndexIDs(
ctx context.Context,
jetID core.RecordID,
handler func(id core.RecordID) error,
) error {
_, jetPrefix := jet.Jet(jetID)
prefix := prefixkey(scopeIDLifeline, jetPrefix)
return os.DB.iterate(ctx, prefix, func(k, v []byte) error {
pn := pulseNumFromKey(0, k)
id := core.NewRecordID(pn, k[core.PulseNumberSize:])
err := handler(*id)
if err != nil {
return err
}
return nil
})
}
// GetObjectIndex wraps matching transaction manager method.
func (os *objectStorage) GetObjectIndex(
ctx context.Context,
jetID core.RecordID,
id *core.RecordID,
forupdate bool,
) (*index.ObjectLifeline, error) {
tx, err := os.DB.BeginTransaction(false)
if err != nil {
return nil, err
}
defer tx.Discard()
idx, err := tx.GetObjectIndex(ctx, jetID, id, forupdate)
if err != nil {
return nil, err
}
return idx, nil
}
// SetObjectIndex wraps matching transaction manager method.
func (os *objectStorage) SetObjectIndex(
ctx context.Context,
jetID core.RecordID,
id *core.RecordID,
idx *index.ObjectLifeline,
) error {
return os.DB.Update(ctx, func(tx *TransactionManager) error {
return tx.SetObjectIndex(ctx, jetID, id, idx)
})
}
// RemoveObjectIndex removes an index of an object
func (os *objectStorage) RemoveObjectIndex(
ctx context.Context,
jetID core.RecordID,
ref *core.RecordID,
) error {
return os.DB.Update(ctx, func(tx *TransactionManager) error {
return tx.RemoveObjectIndex(ctx, jetID, ref)
})
}