Implement basic filestore 'no-copy' functionality

License: MIT
Signed-off-by: Jeromy <why@ipfs.io>

blocks/blockstore/blockstore.go

@@ -163,7 +163,11 @@ func (bs *blockstore) Has(k *cid.Cid) (bool, error) {
 }
 
 func (s *blockstore) DeleteBlock(k *cid.Cid) error {
-	return s.datastore.Delete(dshelp.CidToDsKey(k))
+	err := s.datastore.Delete(dshelp.CidToDsKey(k))
+	if err == ds.ErrNotFound {
+		return ErrNotFound
+	}
+	return err
 }
 
 // AllKeysChan runs a query for keys from the blockstore.

commands/files/file.go

@@ -19,10 +19,10 @@ type File interface {
 	// they are not directories
 	io.ReadCloser
 
-	// FileName returns a filename path associated with this file
+	// FileName returns a filename associated with this file
 	FileName() string
 
-	// FullPath returns the full path in the os associated with this file
+	// FullPath returns the full path used when adding this file
 	FullPath() string
 
 	// IsDirectory returns true if the File is a directory (and therefore
@@ -57,6 +57,6 @@ type SizeFile interface {
 }
 
 type FileInfo interface {
-	FullPath() string
+	AbsPath() string
 	Stat() os.FileInfo
 }

commands/files/multipartfile.go

@@ -14,6 +14,7 @@ const (
 
 	applicationDirectory = "application/x-directory"
 	applicationSymlink   = "application/symlink"
+	applicationFile      = "application/octet-stream"
 
 	contentTypeHeader = "Content-Type"
 )
@@ -34,7 +35,8 @@ func NewFileFromPart(part *multipart.Part) (File, error) {
 	}
 
 	contentType := part.Header.Get(contentTypeHeader)
-	if contentType == applicationSymlink {
+	switch contentType {
+	case applicationSymlink:
 		out, err := ioutil.ReadAll(part)
 		if err != nil {
 			return nil, err
@@ -44,6 +46,13 @@ func NewFileFromPart(part *multipart.Part) (File, error) {
 			Target: string(out),
 			name:   f.FileName(),
 		}, nil
+	case applicationFile:
+		return &ReaderFile{
+			reader:   part,
+			filename: f.FileName(),
+			abspath:  part.Header.Get("abspath"),
+			fullpath: f.FullPath(),
+		}, nil
 	}
 
 	var err error

commands/files/readerfile.go

@@ -4,19 +4,30 @@ import (
 	"errors"
 	"io"
 	"os"
+	"path/filepath"
 )
 
 // ReaderFile is a implementation of File created from an `io.Reader`.
 // ReaderFiles are never directories, and can be read from and closed.
 type ReaderFile struct {
 	filename string
 	fullpath string
+	abspath  string
 	reader   io.ReadCloser
 	stat     os.FileInfo
 }
 
 func NewReaderFile(filename, path string, reader io.ReadCloser, stat os.FileInfo) *ReaderFile {
-	return &ReaderFile{filename, path, reader, stat}
+	return &ReaderFile{filename, path, path, reader, stat}
+}
+
+func NewReaderPathFile(filename, path string, reader io.ReadCloser, stat os.FileInfo) (*ReaderFile, error) {
+	abspath, err := filepath.Abs(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return &ReaderFile{filename, path, abspath, reader, stat}, nil
 }
 
 func (f *ReaderFile) IsDirectory() bool {
@@ -35,6 +46,10 @@ func (f *ReaderFile) FullPath() string {
 	return f.fullpath
 }
 
+func (f *ReaderFile) AbsPath() string {
+	return f.abspath
+}
+
 func (f *ReaderFile) Read(p []byte) (int, error) {
 	return f.reader.Read(p)
 }

commands/files/serialfile.go

@@ -23,13 +23,14 @@ type serialFile struct {
 }
 
 func NewSerialFile(name, path string, hidden bool, stat os.FileInfo) (File, error) {
+
 	switch mode := stat.Mode(); {
 	case mode.IsRegular():
 		file, err := os.Open(path)
 		if err != nil {
 			return nil, err
 		}
-		return NewReaderFile(name, path, file, stat), nil
+		return NewReaderPathFile(name, path, file, stat)
 	case mode.IsDir():
 		// for directories, stat all of the contents first, so we know what files to
 		// open when NextFile() is called

commands/http/multifilereader.go

@@ -95,6 +95,9 @@ func (mfr *MultiFileReader) Read(buf []byte) (written int, err error) {
 			header.Set("Content-Disposition", fmt.Sprintf("file; filename=\"%s\"", filename))
 
 			header.Set("Content-Type", contentType)
+			if rf, ok := file.(*files.ReaderFile); ok {
+				header.Set("abspath", rf.AbsPath())
+			}
 
 			_, err := mfr.mpWriter.CreatePart(header)
 			if err != nil {

core/builder.go

@@ -12,6 +12,7 @@ import (
 	bstore "github.com/ipfs/go-ipfs/blocks/blockstore"
 	bserv "github.com/ipfs/go-ipfs/blockservice"
 	offline "github.com/ipfs/go-ipfs/exchange/offline"
+	filestore "github.com/ipfs/go-ipfs/filestore"
 	dag "github.com/ipfs/go-ipfs/merkledag"
 	path "github.com/ipfs/go-ipfs/path"
 	pin "github.com/ipfs/go-ipfs/pin"
@@ -166,8 +167,8 @@ func setupNode(ctx context.Context, n *IpfsNode, cfg *BuildCfg) error {
 		TempErrFunc: isTooManyFDError,
 	}
 
-	var err error
 	bs := bstore.NewBlockstore(rds)
+
 	opts := bstore.DefaultCacheOpts()
 	conf, err := n.Repo.Config()
 	if err != nil {
@@ -184,7 +185,14 @@ func setupNode(ctx context.Context, n *IpfsNode, cfg *BuildCfg) error {
 		return err
 	}
 
-	n.Blockstore = bstore.NewGCBlockstore(cbs, bstore.NewGCLocker())
+	n.BaseBlocks = cbs
+	n.GCLocker = bstore.NewGCLocker()
+	n.Blockstore = bstore.NewGCBlockstore(cbs, n.GCLocker)
+
+	if conf.Experimental.FilestoreEnabled {
+		n.Filestore = filestore.NewFilestore(bs, n.Repo.FileManager())
+		n.Blockstore = bstore.NewGCBlockstore(n.Filestore, n.GCLocker)
+	}
 
 	rcfg, err := n.Repo.Config()
 	if err != nil {

core/commands/add.go

@@ -7,6 +7,7 @@ import (
 	"github.com/ipfs/go-ipfs/core/coreunix"
 	"gx/ipfs/QmeWjRodbcZFKe5tMN7poEx3izym6osrLSnTLf9UjJZBbs/pb"
 
+	bstore "github.com/ipfs/go-ipfs/blocks/blockstore"
 	blockservice "github.com/ipfs/go-ipfs/blockservice"
 	cmds "github.com/ipfs/go-ipfs/commands"
 	files "github.com/ipfs/go-ipfs/commands/files"
@@ -23,16 +24,18 @@ import (
 var ErrDepthLimitExceeded = fmt.Errorf("depth limit exceeded")
 
 const (
-	quietOptionName     = "quiet"
-	silentOptionName    = "silent"
-	progressOptionName  = "progress"
-	trickleOptionName   = "trickle"
-	wrapOptionName      = "wrap-with-directory"
-	hiddenOptionName    = "hidden"
-	onlyHashOptionName  = "only-hash"
-	chunkerOptionName   = "chunker"
-	pinOptionName       = "pin"
-	rawLeavesOptionName = "raw-leaves"
+	quietOptionName       = "quiet"
+	silentOptionName      = "silent"
+	progressOptionName    = "progress"
+	trickleOptionName     = "trickle"
+	wrapOptionName        = "wrap-with-directory"
+	hiddenOptionName      = "hidden"
+	onlyHashOptionName    = "only-hash"
+	chunkerOptionName     = "chunker"
+	pinOptionName         = "pin"
+	rawLeavesOptionName   = "raw-leaves"
+	noCopyOptionName      = "nocopy"
+	fstoreCacheOptionName = "fscache"
 )
 
 var AddCmd = &cmds.Command{
@@ -78,6 +81,8 @@ You can now refer to the added file in a gateway, like so:
 		cmds.StringOption(chunkerOptionName, "s", "Chunking algorithm to use."),
 		cmds.BoolOption(pinOptionName, "Pin this object when adding.").Default(true),
 		cmds.BoolOption(rawLeavesOptionName, "Use raw blocks for leaf nodes. (experimental)"),
+		cmds.BoolOption(noCopyOptionName, "Add the file using filestore. (experimental)"),
+		cmds.BoolOption(fstoreCacheOptionName, "Check the filestore for pre-existing blocks. (experimental)"),
 	},
 	PreRun: func(req cmds.Request) error {
 		quiet, _, _ := req.Option(quietOptionName).Bool()
@@ -140,6 +145,13 @@ You can now refer to the added file in a gateway, like so:
 		chunker, _, _ := req.Option(chunkerOptionName).String()
 		dopin, _, _ := req.Option(pinOptionName).Bool()
 		rawblks, _, _ := req.Option(rawLeavesOptionName).Bool()
+		nocopy, _, _ := req.Option(noCopyOptionName).Bool()
+		fscache, _, _ := req.Option(fstoreCacheOptionName).Bool()
+
+		if nocopy && !rawblks {
+			res.SetError(fmt.Errorf("nocopy option requires '--raw-leaves' to be enabled as well"), cmds.ErrNormal)
+			return
+		}
 
 		if hash {
 			nilnode, err := core.NewNode(n.Context(), &core.BuildCfg{
@@ -154,14 +166,20 @@ You can now refer to the added file in a gateway, like so:
 			n = nilnode
 		}
 
-		dserv := n.DAG
+		addblockstore := n.Blockstore
+		if !fscache && !nocopy {
+			addblockstore = bstore.NewGCBlockstore(n.BaseBlocks, n.GCLocker)
+		}
+
+		exch := n.Exchange
 		local, _, _ := req.Option("local").Bool()
 		if local {
-			offlineexch := offline.Exchange(n.Blockstore)
-			bserv := blockservice.New(n.Blockstore, offlineexch)
-			dserv = dag.NewDAGService(bserv)
+			exch = offline.Exchange(addblockstore)
 		}
 
+		bserv := blockservice.New(addblockstore, exch)
+		dserv := dag.NewDAGService(bserv)
+
 		outChan := make(chan interface{}, 8)
 		res.SetOutput((<-chan interface{})(outChan))
 
@@ -180,6 +198,7 @@ You can now refer to the added file in a gateway, like so:
 		fileAdder.Pin = dopin
 		fileAdder.Silent = silent
 		fileAdder.RawLeaves = rawblks
+		fileAdder.NoCopy = nocopy
 
 		if hash {
 			md := dagtest.Mock()

core/core.go

@@ -27,6 +27,7 @@ import (
 	bitswap "github.com/ipfs/go-ipfs/exchange/bitswap"
 	bsnet "github.com/ipfs/go-ipfs/exchange/bitswap/network"
 	rp "github.com/ipfs/go-ipfs/exchange/reprovide"
+	filestore "github.com/ipfs/go-ipfs/filestore"
 	mount "github.com/ipfs/go-ipfs/fuse/mount"
 	merkledag "github.com/ipfs/go-ipfs/merkledag"
 	mfs "github.com/ipfs/go-ipfs/mfs"
@@ -107,6 +108,9 @@ type IpfsNode struct {
 	// Services
 	Peerstore  pstore.Peerstore     // storage for other Peer instances
 	Blockstore bstore.GCBlockstore  // the block store (lower level)
+	Filestore  *filestore.Filestore // the filestore blockstore
+	BaseBlocks bstore.Blockstore    // the raw blockstore, no filestore wrapping
+	GCLocker   bstore.GCLocker      // the locker used to protect the blockstore during gc
 	Blocks     bserv.BlockService   // the block service, get/add blocks.
 	DAG        merkledag.DAGService // the merkle dag service, get/add objects.
 	Resolver   *path.Resolver       // the path resolution system

core/coreunix/add.go

@@ -103,6 +103,7 @@ type Adder struct {
 	RawLeaves  bool
 	Silent     bool
 	Wrap       bool
+	NoCopy     bool
 	Chunker    string
 	root       node.Node
 	mr         *mfs.Root
@@ -124,6 +125,7 @@ func (adder Adder) add(reader io.Reader) (node.Node, error) {
 		Dagserv:   adder.dagService,
 		RawLeaves: adder.RawLeaves,
 		Maxlinks:  ihelper.DefaultLinksPerBlock,
+		NoCopy:    adder.NoCopy,
 	}
 
 	if adder.Trickle {