feat: generate manifest by piece file

cmd/droplet-client/main.go

@@ -112,6 +112,7 @@ func main() {
 		cli2.WithCategory("actor-funds", actorFundsCmd),
 		cli2.WithCategory("paych", paychCmd),
 		cli2.WithCategory("datacap", datacapCmds),
+		cli2.WithCategory("pieceinfo", pieceInfoCmds),
 	}
 
 	app := &cli.App{

cmd/droplet-client/pieceinfo.go

@@ -0,0 +1,133 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/csv"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/filecoin-project/go-padreader"
+	"github.com/ipfs/go-cid"
+	"github.com/ipld/go-car"
+	"github.com/urfave/cli/v2"
+)
+
+var pieceInfoCmds = &cli.Command{
+	Name:  "piece-info",
+	Usage: "",
+	Subcommands: []*cli.Command{
+		generateManifestFromPieceFileCmd,
+	},
+}
+
+var generateManifestFromPieceFileCmd = &cli.Command{
+	Name:  "gen-manifest",
+	Usage: "generate manifest from piece file",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "output",
+			Value: "./manifest.csv",
+		},
+		&cli.StringSliceFlag{
+			Name:  "skip",
+			Usage: "skip piece file, eg --skip xxxx1 --skip xxxx2",
+		},
+	},
+	ArgsUsage: "<piece-dir>",
+	Action: func(cliCtx *cli.Context) error {
+		if cliCtx.Args().Len() < 1 {
+			return fmt.Errorf("mus pass piece directory")
+		}
+		dir := cliCtx.Args().First()
+		output := cliCtx.String("output")
+
+		skips := make(map[string]struct{})
+		for _, piece := range cliCtx.StringSlice("skip") {
+			skips[piece] = struct{}{}
+		}
+
+		ms := make([]*manifest, 0)
+		err := filepath.Walk(dir, func(path string, d fs.FileInfo, _ error) error {
+			if d.IsDir() {
+				return nil
+			}
+
+			m, err := walkFile(path, d, skips)
+			if err != nil {
+				fmt.Printf("walk %s failed: %v\n", path, err)
+				return nil
+			}
+			if m != nil {
+				ms = append(ms, m)
+			}
+			return nil
+		})
+		if err != nil {
+			return err
+		}
+
+		buf := &bytes.Buffer{}
+		writer := csv.NewWriter(buf)
+		if err := writer.Write(strings.Split("payload_cid,piece_cid,payload_size,piece_size", ",")); err != nil {
+			return err
+		}
+		for _, m := range ms {
+			if err := writer.Write([]string{m.payloadCID.String(), m.pieceCID.String(), strconv.FormatUint(m.payloadSize, 10), strconv.FormatUint(uint64(m.pieceSize), 10)}); err != nil {
+				return err
+			}
+		}
+		writer.Flush()
+
+		return os.WriteFile(output, buf.Bytes(), 0o755)
+	},
+}
+
+func walkFile(path string, d fs.FileInfo, skips map[string]struct{}) (*manifest, error) {
+	name := d.Name()
+	if _, ok := skips[name]; ok {
+		fmt.Println("skip file:", name)
+		return nil, nil
+	}
+	// xxxx.car
+	name = strings.TrimRight(name, ".car")
+
+	pieceCid, err := cid.Parse(name)
+	if err != nil {
+		return nil, fmt.Errorf("parse %s to cid failed: %v", name, err)
+	}
+
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to open CAR file: %w", err)
+	}
+	defer f.Close() //nolint:errcheck
+
+	hd, err := car.ReadHeader(bufio.NewReader(f))
+	if err != nil {
+		return nil, fmt.Errorf("failed to read CAR header: %w", err)
+	}
+	if len(hd.Roots) != 1 {
+		return nil, fmt.Errorf("car file can have one and only one header")
+	}
+	if hd.Version != 1 && hd.Version != 2 {
+		return nil, fmt.Errorf("car version must be 1 or 2, is %d", hd.Version)
+	}
+
+	fi, err := f.Stat()
+	if err != nil {
+		return nil, err
+	}
+	size := fi.Size()
+
+	return &manifest{
+		payloadCID:  hd.Roots[0],
+		payloadSize: uint64(size),
+		pieceCID:    pieceCid,
+		pieceSize:   padreader.PaddedSize(uint64(size)),
+	}, nil
+}

cmd/droplet-client/util.go

@@ -49,17 +49,38 @@ func loadManifest(path string) ([]*manifest, error) {
 
 	manifests := make([]*manifest, 0, len(records))
 	for i, record := range records {
-		// skip title: payload_cid,filename,piece_cid,payload_size,piece_size,detail or payload_cid,filename,detail
+		// skip title
 		if i == 0 {
 			continue
 		}
 
 		if len(record) == 3 {
+			// payload_cid,filename,detail
 			payloadCID, err := cid.Parse(record[0])
 			if err == nil {
 				manifests = append(manifests, &manifest{payloadCID: payloadCID})
 			}
+		} else if len(record) == 4 {
+			// payload_cid,piece_cid,payload_size,piece_size
+			payloadCID, err := cid.Parse(record[0])
+			if err != nil {
+				continue
+			}
+			pieceCID, err := cid.Parse(record[1])
+			if err != nil {
+				continue
+			}
+			payloadSize, err := strconv.ParseUint(record[2], 10, 64)
+			if err != nil {
+				continue
+			}
+			pieceSize, err := strconv.Atoi(record[3])
+			if err == nil {
+				manifests = append(manifests, &manifest{payloadCID: payloadCID, payloadSize: payloadSize,
+					pieceCID: pieceCID, pieceSize: abi.UnpaddedPieceSize(pieceSize)})
+			}
 		} else if len(record) == 6 {
+			// payload_cid,filename,piece_cid,payload_size,piece_size,detail
 			payloadCID, err := cid.Parse(record[0])
 			if err != nil {
 				continue