package main import ( "fmt" "io" "os" blockstore "github.com/ipfs/go-ipfs-blockstore" "github.com/ipld/go-car" "golang.org/x/xerrors" "gopkg.in/urfave/cli.v2" "github.com/filecoin-project/lotus/node/repo" ) var importCarCmd = &cli.Command{ Name: "import-car", Description: "Import a car file into node chain blockstore", Action: func(cctx *cli.Context) error { r, err := repo.NewFS(cctx.String("repo")) if err != nil { return xerrors.Errorf("opening fs repo: %w", err) } exists, err := r.Exists() if err != nil { return err } if !exists { return xerrors.Errorf("lotus repo doesn't exist") } lr, err := r.Lock(repo.FullNode) if err != nil { return err } defer lr.Close() cf := cctx.Args().Get(0) f, err := os.OpenFile(cf, os.O_RDONLY, 0664) if err != nil { return xerrors.Errorf("opening the car file: %w", err) } ds, err := lr.Datastore("/blocks") if err != nil { return err } bs := blockstore.NewBlockstore(ds) bs = blockstore.NewIdStore(bs) cr, err := car.NewCarReader(f) if err != nil { return err } for { blk, err := cr.Next() switch err { case io.EOF: if err := f.Close(); err != nil { return err } fmt.Println() return ds.Close() default: fmt.Println() return err case nil: fmt.Printf("\r%s", blk.Cid()) if err := bs.Put(blk); err != nil { return xerrors.Errorf("put %s: %w", blk.Cid(), err) } } } }, }