/
mode_get_multi.go
91 lines (80 loc) · 2.66 KB
/
mode_get_multi.go
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// Copyright 2019 The Swarm Authors
// This file is part of the Swarm library.
//
// The Swarm library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Swarm library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Swarm library. If not, see <http://www.gnu.org/licenses/>.
package localstore
import (
"context"
"errors"
"time"
"github.com/newswarm-lab/new-bee/pkg/postage"
"github.com/newswarm-lab/new-bee/pkg/shed"
"github.com/newswarm-lab/new-bee/pkg/storage"
"github.com/newswarm-lab/new-bee/pkg/swarm"
"github.com/syndtr/goleveldb/leveldb"
)
// GetMulti returns chunks from the database. If one of the chunks is not found
// storage.ErrNotFound will be returned. All required indexes will be updated
// required by the Getter Mode. GetMulti is required to implement chunk.Store
// interface.
func (db *DB) GetMulti(ctx context.Context, mode storage.ModeGet, addrs ...swarm.Address) (chunks []swarm.Chunk, err error) {
db.metrics.ModeGetMulti.Inc()
defer totalTimeMetric(db.metrics.TotalTimeGetMulti, time.Now())
defer func() {
if err != nil {
db.metrics.ModeGetMultiFailure.Inc()
}
}()
out, err := db.getMulti(mode, addrs...)
if err != nil {
if errors.Is(err, leveldb.ErrNotFound) {
return nil, storage.ErrNotFound
}
return nil, err
}
chunks = make([]swarm.Chunk, len(out))
for i, ch := range out {
chunks[i] = swarm.NewChunk(swarm.NewAddress(ch.Address), ch.Data).
WithStamp(postage.NewStamp(ch.BatchID, ch.Index, ch.Timestamp, ch.Sig))
}
return chunks, nil
}
// getMulti returns Items from the retrieval index
// and updates other indexes.
func (db *DB) getMulti(mode storage.ModeGet, addrs ...swarm.Address) (out []shed.Item, err error) {
out = make([]shed.Item, len(addrs))
for i, addr := range addrs {
out[i].Address = addr.Bytes()
}
err = db.retrievalDataIndex.Fill(out)
if err != nil {
return nil, err
}
switch mode {
// update the access timestamp and gc index
case storage.ModeGetRequest:
db.updateGCItems(out...)
case storage.ModeGetPin:
err := db.pinIndex.Fill(out)
if err != nil {
return nil, err
}
// no updates to indexes
case storage.ModeGetSync:
case storage.ModeGetLookup:
default:
return out, ErrInvalidMode
}
return out, nil
}