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make common module as any-sync repo

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Sergey Cherepanov 2023-01-05 15:34:09 +03:00 • committed by Mikhail Iudin
parent aac5b3e83c
commit 596a315c5f
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320 changed files with 453 additions and 29202 deletions
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88
common/commonfile/fileservice/fileservice.go
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@ -1,88 +0,0 @@
package fileservice
import (
"context"
"fmt"
"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app"
"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app/logger"
"github.com/anytypeio/go-anytype-infrastructure-experiments/common/commonfile/fileblockstore"
"github.com/ipfs/go-cid"
chunker "github.com/ipfs/go-ipfs-chunker"
ipld "github.com/ipfs/go-ipld-format"
"github.com/ipfs/go-merkledag"
"github.com/ipfs/go-unixfs/importer/balanced"
"github.com/ipfs/go-unixfs/importer/helpers"
ufsio "github.com/ipfs/go-unixfs/io"
"github.com/multiformats/go-multihash"
"go.uber.org/zap"
"io"
)
const CName = "common.commonfile.fileservice"
var log = logger.NewNamed(CName)
func New() FileService {
return &fileService{}
}
type FileService interface {
// GetFile gets file from ipfs storage
GetFile(ctx context.Context, c cid.Cid) (ufsio.ReadSeekCloser, error)
// AddFile adds file to ipfs storage
AddFile(ctx context.Context, r io.Reader) (ipld.Node, error)
app.Component
}
type fileService struct {
merkledag ipld.DAGService
prefix cid.Prefix
}
func (fs *fileService) Init(a *app.App) (err error) {
prefix, err := merkledag.PrefixForCidVersion(1)
if err != nil {
return fmt.Errorf("bad CID Version: %s", err)
}
hashFunCode, ok := multihash.Names["sha2-256"]
if !ok {
return fmt.Errorf("unrecognized hash function")
}
prefix.MhType = hashFunCode
prefix.MhLength = -1
bs := newBlockService(a.MustComponent(fileblockstore.CName).(fileblockstore.BlockStore))
fs.merkledag = merkledag.NewDAGService(bs)
fs.prefix = prefix
return
}
func (fs *fileService) Name() string {
return CName
}
func (fs *fileService) AddFile(ctx context.Context, r io.Reader) (ipld.Node, error) {
dbp := helpers.DagBuilderParams{
Dagserv: fs.merkledag,
Maxlinks: helpers.DefaultLinksPerBlock,
CidBuilder: &fs.prefix,
}
dbh, err := dbp.New(chunker.DefaultSplitter(r))
if err != nil {
return nil, err
}
n, err := balanced.Layout(dbh)
if err != nil {
return nil, err
}
log.Debug("add file", zap.String("cid", n.Cid().String()))
return n, nil
}
func (fs *fileService) GetFile(ctx context.Context, c cid.Cid) (ufsio.ReadSeekCloser, error) {
log.Debug("get file", zap.String("cid", c.String()))
n, err := fs.merkledag.Get(ctx, c)
if err != nil {
return nil, err
}
return ufsio.NewDagReader(ctx, n, fs.merkledag)
}