Merge pull request #2 from distribyted/cgofuse

.github/workflows/test.yaml

@@ -4,11 +4,13 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.13.x, 1.14.x]
+        go-version: [1.15.x]
         platform: [ubuntu-latest]
         # platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
+    - name: Install fuse
+      run: sudo apt-get install libfuse-dev gcc
     - name: Install Go
       uses: actions/setup-go@v2
       with:
@@ -17,5 +19,11 @@ jobs:
       uses: actions/checkout@v2
     - name: Test
       run: make test
+    - name: Code Coverage
+      uses: codecov/codecov-action@v1
+      with:
+        fail_ci_if_error: true
     - name: Build
       run: make build
+    - name: Compile
+      run: make compile

.gitignore

@@ -1,3 +1,4 @@
 _DATA
 httpfs_vfsdata.go
-bin/
+bin/
+coverage.out

Makefile

@@ -5,11 +5,15 @@ BUILD := $(shell git rev-parse --short HEAD)
 PROJECTNAME := $(shell basename "$(PWD)")
 
 # Use linker flags to provide version/build settings
-LDFLAGS=-ldflags "-X=main.Version=$(VERSION) -X=main.Build=$(BUILD)"
+LDFLAGS=-X=main.Version=$(VERSION) -X=main.Build=$(BUILD) -linkmode external
 
 # Make is verbose in Linux. Make it silent.
 MAKEFLAGS += --silent
 
+GOPATH=~/go
+ORGPATH=$(GOPATH)/src/github.com/distribyted
+REPOPATH=$(ORGPATH)/distribyted
+
 ## run: run from code.
 run:
 	go run cmd/distribyted/main.go examples/conf_example.yaml
@@ -19,13 +23,13 @@ build: go-generate go-build
 
 ## test: execute all tests.
 test:
-	go test -v ./...
+	go test -v --race -coverprofile=coverage.out ./...
 
 compile: go-generate go-compile
 
 go-build:
 	@echo "  >  Building binary..."
-	go build $(LDFLAGS) -o bin/distribyted -tags "release" cmd/distribyted/main.go
+	go build -o bin/distribyted -tags "release" cmd/distribyted/main.go
 
 go-generate:
 	@echo "  >  Generating code files..."
@@ -33,23 +37,17 @@ go-generate:
 
 go-compile:
 	@echo "  >  Compiling for several platforms..."
-	# 32-Bit Systems
+	go get src.techknowlogick.com/xgo
-	# FreeBDS
+	docker build ./build_tools/ -t distribyted/xgo-cgofuse
-	#GOOS=freebsd GOARCH=386 go build $(LDFLAGS) -o bin/main-freebsd-386 -tags "release" cmd/distribyted/main.go
+	mkdir -p $(ORGPATH)
-	# MacOS
+	ln -sfrnT . $(REPOPATH)
-	#GOOS=darwin GOARCH=386 go build $(LDFLAGS) -o bin/main-darwin-386 -tags "release" cmd/distribyted/main.go
+
-	# Linux
+	@echo "  >  Compiling for windows..."
-	GOOS=linux GOARCH=386 go build $(LDFLAGS) -o bin/distribyted-linux-386 -tags "release" cmd/distribyted/main.go
+	GOPATH=$(GOPATH) xgo -out bin/distribyted-$(VERSION) -image=distribyted/xgo-cgofuse -ldflags='-extldflags "-static" $(LDFLAGS)' -tags="release" -targets=windows/amd64 $(REPOPATH)/cmd/distribyted/
-    # 64-Bit
+	@echo "  >  Compiling for linux..."
-	# FreeBDS
+	GOPATH=$(GOPATH) xgo -out bin/distribyted-$(VERSION) -image=distribyted/xgo-cgofuse -ldflags='$(LDFLAGS)' -tags="release" -targets=linux/arm-7,linux/amd64 $(REPOPATH)/cmd/distribyted/
-	#GOOS=freebsd GOARCH=amd64 go build $(LDFLAGS) -o bin/main-freebsd-amd64 -tags "release" cmd/distribyted/main.go
+#	@echo "  >  Compiling for darwin..."
-	# MacOS
+#	GOPATH=$(GOPATH) xgo -out bin/distribyted-$(VERSION) -image=distribyted/xgo-cgofuse -ldflags='$(LDFLAGS)' -tags="release" -targets=darwin/* $(REPOPATH)/cmd/distribyted/
-	#GOOS=darwin GOARCH=amd64 go build $(LDFLAGS) -o bin/main-darwin-amd64 -tags "release" cmd/distribyted/main.go
-	# Linux
-	GOOS=linux GOARCH=amd64 go build $(LDFLAGS) -o bin/distribyted-linux-amd64 -tags "release" cmd/distribyted/main.go
-	
-	# ARM
-	GOOS=linux GOARCH=arm GOARM=5 go build $(LDFLAGS) -o bin/distribyted-linux-arm -tags "release" cmd/distribyted/main.go
 
 .PHONY: help
 all: help

README.md

@@ -3,6 +3,7 @@
 [![Stargazers][stars-shield]][stars-url]
 [![Issues][issues-shield]][issues-url]
 [![GPL3 License][license-shield]][license-url]
+[![codecov](codecov-shield)](codecov-url)
 
 <!-- PROJECT LOGO -->
 <br />
@@ -26,14 +27,20 @@
 <!-- TABLE OF CONTENTS -->
 ## Table of Contents
 
-* [About the Project](#about-the-project)
+- [Table of Contents](#table-of-contents)
-  * [Use Cases](#use-cases)
+- [About The Project](#about-the-project)
-  * [Supported _Expandable_ File Formats](#supported-expandable-file-formats)
+  - [Use Cases](#use-cases)
-* [Getting Started](#getting-started)
+  - [Supported _Expandable_ File Formats](#supported-_expandable_-file-formats)
-* [Usage](#usage)
+    - [Supported](#supported)
-  * [Configuration File](#configuration-file)
+    - [To Be Supported](#to-be-supported)
-* [Contributing](#contributing)
+    - [Not Supported](#not-supported)
-* [License](#license)
+- [Getting Started](#getting-started)
+- [Usage](#usage)
+  - [Configuration File](#configuration-file)
+    - [root](#root)
+    - [mountpoints](#mountpoints)
+- [Contributing](#contributing)
+- [License](#license)
 
 <!-- ABOUT THE PROJECT -->
 ## About The Project
@@ -124,3 +131,5 @@ Distributed under the GPL3 license. See `LICENSE` for more information.
 [license-url]: https://github.com/distribyted/distribyted/blob/master/LICENSE
 [product-screenshot]: docs/images/distribyted_demo.gif
 [example-config]: https://github.com/distribyted/distribyted/blob/master/examples/conf_example.yaml
+[codecov-shield]: https://img.shields.io/codecov/c/github/distribyted/distribyted?style=flat-square
+[codecov-url]: https://codecov.io/gh/distribyted/distribyted

build_tools/Dockerfile

@@ -0,0 +1,36 @@
+FROM techknowlogick/xgo:go-1.15.x
+
+# add 32-bit and 64-bit architectures and install 7zip
+RUN \
+    dpkg --add-architecture i386 && \
+    dpkg --add-architecture amd64 && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends p7zip-full
+
+# install OSXFUSE
+# (TODO) not compatible anymore. Find a new way to install osxfuse
+# RUN wget -q -O osxfuse.dmg https://github.com/osxfuse/osxfuse/releases/download/osxfuse-3.8.3/osxfuse-3.8.3.dmg
+# RUN 7z e osxfuse.dmg 0.hfs
+# RUN 7z e 0.hfs "FUSE for macOS/Extras/FUSE for macOS 3.8.3.pkg"
+# RUN 7z e "FUSE for macOS 3.8.3.pkg" Core.pkg/Payload
+# RUN 7z e Payload
+# RUN 7z x Payload~ -o/tmp
+# RUN cp -R /tmp/usr/local/include/osxfuse /usr/local/include
+# RUN cp /tmp/usr/local/lib/libosxfuse_i64.2.dylib /usr/local/lib/libosxfuse.dylib
+
+# install LIBFUSE
+RUN \
+    apt-get update && \
+    apt-get install -y --no-install-recommends libfuse-dev:i386 && \
+    apt-get install -y --no-install-recommends libfuse-dev:amd64 && \
+    apt-get download libfuse-dev:i386 && \
+    dpkg -x libfuse-dev*i386*.deb /
+
+# install WinFsp-FUSE
+RUN \
+    wget -q -O winfsp.zip \
+        https://github.com/billziss-gh/winfsp/archive/release/1.4.zip && \
+    7z e winfsp.zip 'winfsp-release-1.4/inc/fuse/*' -o/usr/local/include/winfsp
+
+ENV \
+    OSXCROSS_NO_INCLUDE_PATH_WARNINGS 1

cmd/distribyted/main.go

@@ -9,7 +9,7 @@ import (
 
 	"github.com/ajnavarro/distribyted"
 	"github.com/ajnavarro/distribyted/config"
-	"github.com/ajnavarro/distribyted/mount"
+	"github.com/ajnavarro/distribyted/fuse"
 	"github.com/ajnavarro/distribyted/stats"
 	tlog "github.com/anacrolix/log"
 	"github.com/anacrolix/missinggo/v2/filecache"
@@ -20,7 +20,6 @@ import (
 	"github.com/goccy/go-yaml"
 	"github.com/shurcooL/httpfs/html/vfstemplate"
 	"github.com/sirupsen/logrus"
-	ginlogrus "github.com/toorop/gin-logrus"
 )
 
 func main() {
@@ -78,7 +77,7 @@ func main() {
 	}
 
 	ss := stats.NewTorrent()
-	mountService := mount.NewHandler(c, ss)
+	mountService := fuse.NewHandler(c, ss)
 
 	defer func() {
 		tryClose(log, c, mountService)
@@ -103,7 +102,7 @@ func main() {
 
 	r := gin.New()
 
-	r.Use(ginlogrus.Logger(log), gin.Recovery())
+	r.Use(gin.Recovery())
 
 	assets := distribyted.NewBinaryFileSystem(distribyted.HttpFS, "/assets")
 	r.Use(static.Serve("/assets", assets))
@@ -146,7 +145,7 @@ func main() {
 
 }
 
-func tryClose(log *logrus.Logger, c *torrent.Client, mountService *mount.Handler) {
+func tryClose(log *logrus.Logger, c *torrent.Client, mountService *fuse.Handler) {
 	log.Info("closing torrent client...")
 	c.Close()
 	log.Info("unmounting fuse filesystem...")

fs/dir.go

@@ -0,0 +1,26 @@
+package fs
+
+var _ File = &Dir{}
+
+type Dir struct {
+}
+
+func (d *Dir) Size() int64 {
+	return 0
+}
+
+func (d *Dir) IsDir() bool {
+	return true
+}
+
+func (d *Dir) Close() error {
+	return nil
+}
+
+func (d *Dir) Read(p []byte) (n int, err error) {
+	return 0, nil
+}
+
+func (d *Dir) ReadAt(p []byte, off int64) (n int, err error) {
+	return 0, nil
+}

fs/fs.go

@@ -0,0 +1,23 @@
+package fs
+
+import (
+	"github.com/ajnavarro/distribyted/iio"
+)
+
+type File interface {
+	IsDir() bool
+	Size() int64
+
+	iio.Reader
+}
+
+type Filesystem interface {
+	// Open opens the named file for reading. If successful, methods on the
+	// returned file can be used for reading; the associated file descriptor has
+	// mode O_RDONLY.
+	Open(filename string) (File, error)
+
+	// ReadDir reads the directory named by dirname and returns a list of
+	// directory entries.
+	ReadDir(path string) (map[string]File, error)
+}

fs/storage.go

@@ -0,0 +1,151 @@
+package fs
+
+import (
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+type FsFactory func(f File) (Filesystem, error)
+
+var SupportedFactories = map[string]FsFactory{
+	".zip": func(f File) (Filesystem, error) {
+		return NewZip(f, f.Size()), nil
+	},
+}
+
+type storage struct {
+	factories map[string]FsFactory
+
+	files       map[string]File
+	filesystems map[string]Filesystem
+	children    map[string]map[string]File
+}
+
+func newStorage(factories map[string]FsFactory) *storage {
+	return &storage{
+		files:       make(map[string]File, 0),
+		children:    make(map[string]map[string]File, 0),
+		filesystems: make(map[string]Filesystem, 0),
+		factories:   factories,
+	}
+}
+
+func (s *storage) Has(path string) bool {
+	path = clean(path)
+
+	f := s.files[path]
+	if f != nil {
+		return true
+	}
+
+	if f, _ := s.getFileFromFs(path); f != nil {
+		return true
+	}
+
+	return false
+}
+
+func (s *storage) Add(f File, p string) error {
+	p = clean(p)
+	if s.Has(p) {
+		if dir, err := s.Get(p); err == nil {
+			if !dir.IsDir() {
+				return os.ErrExist
+			}
+		}
+
+		return nil
+	}
+
+	ext := path.Ext(p)
+	if ffs := s.factories[ext]; ffs != nil {
+		fs, err := ffs(f)
+		if err != nil {
+			return err
+		}
+
+		s.filesystems[p] = fs
+	} else {
+		s.files[p] = f
+	}
+
+	s.createParent(p, f)
+
+	return nil
+}
+
+func (s *storage) createParent(path string, f File) error {
+	base, filename := filepath.Split(path)
+	base = clean(base)
+
+	if err := s.Add(&Dir{}, base); err != nil {
+		return err
+	}
+
+	if _, ok := s.children[base]; !ok {
+		s.children[base] = make(map[string]File, 0)
+	}
+
+	if filename != "" {
+		s.children[base][filename] = f
+	}
+
+	return nil
+}
+
+func (s *storage) Children(path string) map[string]File {
+	path = clean(path)
+
+	out, err := s.getDirFromFs(path)
+	if err == nil {
+		return out
+	}
+
+	l := make(map[string]File, 0)
+	for n, f := range s.children[path] {
+		l[n] = f
+	}
+
+	return l
+}
+
+func (s *storage) Get(path string) (File, error) {
+	path = clean(path)
+	if !s.Has(path) {
+		return nil, os.ErrNotExist
+	}
+
+	file, ok := s.files[path]
+	if ok {
+		return file, nil
+	}
+
+	return s.getFileFromFs(path)
+}
+
+func (s *storage) getFileFromFs(p string) (File, error) {
+	for fsp, fs := range s.filesystems {
+		if strings.HasPrefix(p, fsp) {
+			return fs.Open(string(os.PathSeparator) + strings.TrimPrefix(p, fsp))
+		}
+	}
+
+	return nil, os.ErrNotExist
+}
+
+func (s *storage) getDirFromFs(p string) (map[string]File, error) {
+	for fsp, fs := range s.filesystems {
+		if strings.HasPrefix(p, fsp) {
+			path := strings.TrimPrefix(p, fsp)
+			return fs.ReadDir(path)
+		}
+	}
+
+	return nil, os.ErrNotExist
+}
+
+func clean(path string) string {
+	return filepath.Clean(string(os.PathSeparator) + filepath.FromSlash(path))
+}

fs/storage_test.go

@@ -0,0 +1,129 @@
+package fs
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var dummyFactories = map[string]FsFactory{
+	".test": func(f File) (Filesystem, error) {
+		return &DummyFs{}, nil
+	},
+}
+
+func TestStorage(t *testing.T) {
+	t.Parallel()
+
+	require := require.New(t)
+
+	s := newStorage(dummyFactories)
+
+	err := s.Add(&Dummy{}, "/path/to/dummy/file.txt")
+	require.NoError(err)
+
+	err = s.Add(&Dummy{}, "/path/to/dummy/file2.txt")
+	require.NoError(err)
+
+	contains := s.Has("/path")
+	require.True(contains)
+
+	contains = s.Has("/path/to/dummy/")
+	require.True(contains)
+
+	file, err := s.Get("/path/to/dummy/file.txt")
+	require.NoError(err)
+	require.Equal(&Dummy{}, file)
+
+	file, err = s.Get("/path/to/dummy/file3.txt")
+	require.Error(err)
+	require.Nil(file)
+
+	files := s.Children("/path/to/dummy/")
+	require.Len(files, 2)
+	require.Contains(files, "file.txt")
+	require.Contains(files, "file2.txt")
+
+	err = s.Add(&Dummy{}, "/path/to/dummy/folder/file.txt")
+	require.NoError(err)
+
+	files = s.Children("/path/to/dummy/")
+	require.Len(files, 3)
+	require.Contains(files, "file.txt")
+	require.Contains(files, "file2.txt")
+	require.Contains(files, "folder")
+
+	err = s.Add(&Dummy{}, "path/file4.txt")
+	require.NoError(err)
+
+	require.True(s.Has("/path/file4.txt"))
+
+	files = s.Children("/")
+	require.Len(files, 1)
+
+	err = s.Add(&Dummy{}, "/path/special_file.test")
+	require.NoError(err)
+
+	file, err = s.Get("/path/special_file.test/dir/here/file1.txt")
+	require.NoError(err)
+	require.Equal(&Dummy{}, file)
+
+	files = s.Children("/path/special_file.test")
+	require.Len(files, 0)
+
+	files = s.Children("/path/special_file.test/dir/here")
+	require.Len(files, 2)
+
+	err = s.Add(&Dummy{}, "/path/to/__special__path/file3.txt")
+	require.NoError(err)
+
+	file, err = s.Get("/path/to/__special__path/file3.txt")
+	require.NoError(err)
+	require.Equal(&Dummy{}, file)
+}
+
+var _ Filesystem = &DummyFs{}
+
+type DummyFs struct {
+}
+
+func (d *DummyFs) Open(filename string) (File, error) {
+	return &Dummy{}, nil
+}
+
+func (d *DummyFs) ReadDir(path string) (map[string]File, error) {
+	if path == "/dir/here" {
+		return map[string]File{
+			"file1.txt": &Dummy{},
+			"file2.txt": &Dummy{},
+		}, nil
+	}
+
+	return nil, os.ErrNotExist
+}
+
+var _ File = &Dummy{}
+
+type Dummy struct {
+}
+
+func (d *Dummy) Size() int64 {
+	return 0
+}
+
+func (d *Dummy) IsDir() bool {
+	return false
+}
+
+func (d *Dummy) Close() error {
+	return nil
+}
+
+func (d *Dummy) Read(p []byte) (n int, err error) {
+	return 0, nil
+}
+
+func (d *Dummy) ReadAt(p []byte, off int64) (n int, err error) {
+	return 0, nil
+}

fs/torrent.go

@@ -0,0 +1,77 @@
+package fs
+
+import (
+	"github.com/ajnavarro/distribyted/iio"
+	"github.com/anacrolix/torrent"
+)
+
+var _ Filesystem = &Torrent{}
+
+type Torrent struct {
+	t *torrent.Torrent
+	s *storage
+}
+
+func NewTorrent(t *torrent.Torrent) *Torrent {
+	return &Torrent{
+		t: t,
+		s: newStorage(SupportedFactories),
+	}
+}
+
+func (fs *Torrent) load() {
+	<-fs.t.GotInfo()
+	for _, file := range fs.t.Files() {
+		fs.s.Add(&torrentFile{readerFunc: file.NewReader, len: file.Length()}, file.Path())
+	}
+}
+
+func (fs *Torrent) Open(filename string) (File, error) {
+	fs.load()
+	return fs.s.Get(filename)
+}
+
+func (fs *Torrent) ReadDir(path string) (map[string]File, error) {
+	fs.load()
+	return fs.s.Children(path), nil
+}
+
+var _ File = &torrentFile{}
+
+type torrentFile struct {
+	readerFunc func() torrent.Reader
+	reader     iio.Reader
+	len        int64
+}
+
+func (d *torrentFile) load() {
+	if d.reader != nil {
+		return
+	}
+
+	d.reader = iio.NewReadAtWrapper(d.readerFunc())
+}
+
+func (d *torrentFile) Size() int64 {
+	return d.len
+}
+
+func (d *torrentFile) IsDir() bool {
+	return false
+}
+
+func (d *torrentFile) Close() error {
+	err := d.reader.Close()
+	d.reader = nil
+	return err
+}
+
+func (d *torrentFile) Read(p []byte) (n int, err error) {
+	d.load()
+	return d.reader.Read(p)
+}
+
+func (d *torrentFile) ReadAt(p []byte, off int64) (n int, err error) {
+	d.load()
+	return d.reader.ReadAt(p, off)
+}

fs/torrent_test.go

@@ -0,0 +1,47 @@
+package fs
+
+import (
+	"os"
+	"testing"
+
+	"github.com/anacrolix/torrent"
+
+	"github.com/stretchr/testify/require"
+)
+
+const testMagnet = "magnet:?xt=urn:btih:a88fda5954e89178c372716a6a78b8180ed4dad3&dn=The+WIRED+CD+-+Rip.+Sample.+Mash.+Share&tr=udp%3A%2F%2Fexplodie.org%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.empire-js.us%3A1337&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337&tr=wss%3A%2F%2Ftracker.btorrent.xyz&tr=wss%3A%2F%2Ftracker.fastcast.nz&tr=wss%3A%2F%2Ftracker.openwebtorrent.com&ws=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2F&xs=https%3A%2F%2Fwebtorrent.io%2Ftorrents%2Fwired-cd.torrent"
+
+func TestTorrentFilesystem(t *testing.T) {
+	t.Parallel()
+
+	require := require.New(t)
+
+	cfg := torrent.NewDefaultClientConfig()
+	cfg.DataDir = os.TempDir()
+
+	client, err := torrent.NewClient(cfg)
+	require.NoError(err)
+
+	torrent, err := client.AddMagnet(testMagnet)
+	require.NoError(err)
+
+	tfs := NewTorrent(torrent)
+
+	files, err := tfs.ReadDir("/")
+	require.NoError(err)
+	require.Len(files, 1)
+	require.Contains(files, "The WIRED CD - Rip. Sample. Mash. Share")
+
+	files, err = tfs.ReadDir("/The WIRED CD - Rip. Sample. Mash. Share")
+	require.NoError(err)
+	require.Len(files, 18)
+
+	f, err := tfs.Open("/The WIRED CD - Rip. Sample. Mash. Share/not_existing_file.txt")
+	require.Equal(os.ErrNotExist, err)
+	require.Nil(f)
+
+	f, err = tfs.Open("/The WIRED CD - Rip. Sample. Mash. Share/01 - Beastie Boys - Now Get Busy.mp3")
+	require.NoError(err)
+	require.NotNil(f)
+	require.Equal(f.Size(), int64(1964275))
+}

fs/zip.go

@@ -0,0 +1,141 @@
+package fs
+
+import (
+	"archive/zip"
+	"os"
+
+	"github.com/ajnavarro/distribyted/iio"
+)
+
+var _ Filesystem = &Zip{}
+
+type Zip struct {
+	r    iio.Reader
+	s    *storage
+	size int64
+
+	loaded bool
+}
+
+func NewZip(r iio.Reader, size int64) *Zip {
+	return &Zip{
+		r:    r,
+		size: size,
+		s:    newStorage(nil),
+	}
+}
+
+func (fs *Zip) load() error {
+	if fs.loaded {
+		return nil
+	}
+
+	zr, err := zip.NewReader(fs.r, fs.size)
+	if err != nil {
+		return err
+	}
+
+	for _, f := range zr.File {
+		f := f
+		if f.FileInfo().IsDir() {
+			continue
+		}
+
+		err := fs.s.Add(newZipFile(
+			func() (iio.Reader, error) {
+				zr, err := f.Open()
+				if err != nil {
+					return nil, err
+				}
+
+				return iio.NewDiskTeeReader(zr)
+			},
+			f.FileInfo().Size(),
+		), string(os.PathSeparator)+f.Name)
+		if err != nil {
+			return err
+		}
+	}
+
+	fs.loaded = true
+
+	return nil
+}
+
+func (fs *Zip) Open(filename string) (File, error) {
+	if err := fs.load(); err != nil {
+		return nil, err
+	}
+
+	return fs.s.Get(filename)
+}
+
+func (fs *Zip) ReadDir(path string) (map[string]File, error) {
+	if err := fs.load(); err != nil {
+		return nil, err
+	}
+
+	return fs.s.Children(path), nil
+}
+
+var _ File = &zipFile{}
+
+func newZipFile(readerFunc func() (iio.Reader, error), len int64) *zipFile {
+	return &zipFile{
+		readerFunc: readerFunc,
+		len:        len,
+	}
+}
+
+type zipFile struct {
+	readerFunc func() (iio.Reader, error)
+	reader     iio.Reader
+	len        int64
+}
+
+func (d *zipFile) load() error {
+	if d.reader != nil {
+		return nil
+	}
+	r, err := d.readerFunc()
+	if err != nil {
+		return err
+	}
+
+	d.reader = r
+
+	return nil
+}
+
+func (d *zipFile) Size() int64 {
+	return d.len
+}
+
+func (d *zipFile) IsDir() bool {
+	return false
+}
+
+func (d *zipFile) Close() (err error) {
+	if d.reader != nil {
+		err = d.reader.Close()
+		d.reader = nil
+	}
+
+	return
+}
+
+func (d *zipFile) Read(p []byte) (n int, err error) {
+	if err := d.load(); err != nil {
+		return 0, err
+	}
+
+	return d.reader.Read(p)
+}
+
+func (d *zipFile) ReadAt(p []byte, off int64) (n int, err error) {
+	if err := d.load(); err != nil {
+		return 0, err
+	}
+
+	return d.reader.ReadAt(p, off)
+}

fs/zip_test.go

@@ -0,0 +1,66 @@
+package fs
+
+import (
+	"archive/zip"
+	"bytes"
+	"io"
+	"testing"
+
+	"github.com/ajnavarro/distribyted/iio"
+	"github.com/stretchr/testify/require"
+)
+
+var fileContent []byte = []byte("Hello World")
+
+func TestZipFilesystem(t *testing.T) {
+	t.Parallel()
+	require := require.New(t)
+
+	zReader, len := createTestZip(require)
+
+	zfs := NewZip(zReader, len)
+
+	files, err := zfs.ReadDir("/path/to/test/file")
+	require.NoError(err)
+
+	require.Len(files, 1)
+	f := files["1.txt"]
+	require.NotNil(f)
+
+	out := make([]byte, 11)
+	n, err := f.Read(out)
+	require.Equal(io.EOF, err)
+	require.Equal(11, n)
+	require.Equal(fileContent, out)
+
+}
+
+func createTestZip(require *require.Assertions) (iio.Reader, int64) {
+	buf := bytes.NewBuffer([]byte{})
+
+	zWriter := zip.NewWriter(buf)
+
+	f1, err := zWriter.Create("path/to/test/file/1.txt")
+	require.NoError(err)
+	_, err = f1.Write(fileContent)
+	require.NoError(err)
+
+	err = zWriter.Close()
+	require.NoError(err)
+
+	return newCBR(buf.Bytes()), int64(buf.Len())
+}
+
+type closeableByteReader struct {
+	*bytes.Reader
+}
+
+func newCBR(b []byte) *closeableByteReader {
+	return &closeableByteReader{
+		Reader: bytes.NewReader(b),
+	}
+}
+
+func (*closeableByteReader) Close() error {
+	return nil
+}

fuse/handler.go

@@ -1,37 +1,33 @@
-package mount
+package fuse
 
 import (
 	"fmt"
-	"os"
 
 	"github.com/ajnavarro/distribyted/config"
-	"github.com/ajnavarro/distribyted/node"
+	"github.com/ajnavarro/distribyted/fs"
 	"github.com/ajnavarro/distribyted/stats"
 	"github.com/anacrolix/torrent"
-	"github.com/hanwen/go-fuse/v2/fs"
+	"github.com/billziss-gh/cgofuse/fuse"
-	"github.com/hanwen/go-fuse/v2/fuse"
 	log "github.com/sirupsen/logrus"
 )
 
 type Handler struct {
-	c    *torrent.Client
+	c *torrent.Client
-	s    *stats.Torrent
+	s *stats.Torrent
-	opts *fs.Options
 
-	servers map[string]*fuse.Server
+	hosts map[string]*fuse.FileSystemHost
 }
 
 func NewHandler(c *torrent.Client, s *stats.Torrent) *Handler {
 	return &Handler{
-		c:       c,
+		c:     c,
-		s:       s,
+		s:     s,
-		opts:    &fs.Options{},
+		hosts: make(map[string]*fuse.FileSystemHost),
-		servers: make(map[string]*fuse.Server),
 	}
 }
 
 func (s *Handler) Mount(mpc *config.MountPoint) error {
-	var torrents []*torrent.Torrent
+	var torrents []fs.Filesystem
 	for _, mpcTorrent := range mpc.Torrents {
 		var t *torrent.Torrent
 		var err error
@@ -58,34 +54,37 @@ func (s *Handler) Mount(mpc *config.MountPoint) error {
 		}
 
 		s.s.Add(mpc.Path, t)
-		log.WithField("name", t.Name()).WithField("path", mpc.Path).Info("torrent added to mountpoint")
+		torrents = append(torrents, fs.NewTorrent(t))
 
-		torrents = append(torrents, t)
+		log.WithField("name", t.Name()).WithField("path", mpc.Path).Info("torrent added to mountpoint")
 	}
 
 	// TODO change permissions
-	if err := os.MkdirAll(mpc.Path, 0770); err != nil && !os.IsExist(err) {
+	// if err := os.MkdirAll(mpc.Path, 0770); err != nil && !os.IsExist(err) {
-		return err
+	// 	return err
-	}
+	// }
 
-	node := node.NewRoot(torrents)
+	host := fuse.NewFileSystemHost(&FS{FSS: torrents})
-	server, err := fs.Mount(mpc.Path, node, s.opts)
-	if err != nil {
-		return err
-	}
 
-	s.servers[mpc.Path] = server
+	go func() {
+		ok := host.Mount(mpc.Path, nil)
+		if !ok {
+			log.WithField("path", mpc.Path).Error("error trying to mount filesystem")
+		}
+	}()
+
+	s.hosts[mpc.Path] = host
 
 	return nil
 }
 
 func (s *Handler) Close() {
-	for path, server := range s.servers {
+	for path, server := range s.hosts {
 		log.WithField("path", path).Info("unmounting")
-		err := server.Unmount()
+		ok := server.Unmount()
-		if err != nil {
+		if !ok {
 			//TODO try to force unmount if possible
-			log.WithError(err).WithField("path", path).Error("unmount failed")
+			log.WithField("path", path).Error("unmount failed")
 		}
 	}
 }

fuse/mount.go

@@ -0,0 +1,146 @@
+package fuse
+
+import (
+	"io"
+	"math"
+	"os"
+	"sync"
+
+	"github.com/ajnavarro/distribyted/fs"
+	"github.com/billziss-gh/cgofuse/fuse"
+	"github.com/sirupsen/logrus"
+)
+
+type FS struct {
+	fuse.FileSystemBase
+
+	lock sync.Mutex
+	FSS  []fs.Filesystem
+}
+
+func (fs *FS) Open(path string, flags int) (errc int, fh uint64) {
+	return 0, 0
+}
+
+func (fs *FS) Getattr(path string, stat *fuse.Stat_t, fh uint64) (errc int) {
+	defer fs.synchronize()()
+
+	if path == "/" {
+		stat.Mode = fuse.S_IFDIR | 0555
+		return 0
+	}
+
+	file, err := fs.findFile(path)
+	if err != nil {
+		logrus.WithField("path", path).WithError(err).Warn("error finding file")
+		return -fuse.EIO
+	}
+
+	if err == os.ErrNotExist {
+		logrus.WithField("path", path).Warn("file does not exists")
+		return -fuse.ENOENT
+
+	}
+
+	if err != nil {
+		logrus.WithField("path", path).WithError(err).Error("error reading file")
+		return -fuse.EIO
+	}
+
+	if file.IsDir() {
+		stat.Mode = fuse.S_IFDIR | 0555
+	} else {
+		stat.Mode = fuse.S_IFREG | 0444
+		stat.Size = file.Size()
+	}
+
+	return 0
+}
+
+func (fs *FS) Read(path string, dest []byte, off int64, fh uint64) int {
+	defer fs.synchronize()()
+
+	file, err := fs.findFile(path)
+	if err == os.ErrNotExist {
+		logrus.WithField("path", path).Warn("file does not exists")
+		return -fuse.ENOENT
+
+	}
+	if err != nil {
+		logrus.WithField("path", path).WithError(err).Warn("error finding file")
+		return -fuse.EIO
+	}
+
+	end := int(math.Min(float64(len(dest)), float64(int64(file.Size())-off)))
+	if end < 0 {
+		end = 0
+	}
+
+	buf := dest[:end]
+
+	n, err := file.ReadAt(buf, off)
+	if err != nil && err != io.EOF {
+		logrus.WithError(err).Error("error reading data")
+		return -fuse.EIO
+	}
+
+	dest = buf[:n]
+
+	return n
+}
+
+func (fs *FS) Release(path string, fh uint64) (errc int) {
+	defer fs.synchronize()()
+	return 0
+}
+
+func (fs *FS) Readdir(path string,
+	fill func(name string, stat *fuse.Stat_t, ofst int64) bool,
+	ofst int64,
+	fh uint64) (errc int) {
+	defer fs.synchronize()()
+
+	fill(".", nil, 0)
+	fill("..", nil, 0)
+
+	for _, ifs := range fs.FSS {
+		files, err := ifs.ReadDir(path)
+		if err != nil {
+			return -fuse.EIO
+		}
+		for p := range files {
+			if !fill(p, nil, 0) {
+				logrus.WithField("path", p).Error("error adding directory")
+				break
+			}
+		}
+	}
+
+	return 0
+}
+
+func (fs *FS) findFile(path string) (fs.File, error) {
+	for _, f := range fs.FSS {
+		file, err := f.Open(path)
+		if err == os.ErrNotExist {
+			continue
+		}
+		if err != nil {
+			return nil, err
+		}
+
+		// TODO add file to list of opened files to be able to close it when not in use
+		if file != nil {
+			return file, nil
+		}
+	}
+
+	return nil, os.ErrNotExist
+}
+
+func (fs *FS) synchronize() func() {
+	fs.lock.Lock()
+	return func() {
+		fs.lock.Unlock()
+	}
+}

go.mod

@@ -3,33 +3,39 @@ module github.com/ajnavarro/distribyted
 go 1.13
 
 require (
-	github.com/RoaringBitmap/roaring v0.5.0 // indirect
+	github.com/RoaringBitmap/roaring v0.5.1 // indirect
-	github.com/anacrolix/dht/v2 v2.6.1 // indirect
+	github.com/anacrolix/dht/v2 v2.7.0 // indirect
-	github.com/anacrolix/go-libutp v1.0.3 // indirect
+	github.com/anacrolix/log v0.7.1-0.20200604014615-c244de44fd2d
-	github.com/anacrolix/log v0.7.0
+	github.com/anacrolix/missinggo/v2 v2.4.1-0.20200419051441-747d9d7544c6
-	github.com/anacrolix/missinggo/v2 v2.4.1-0.20200227072623-f02f6484f997
+	github.com/anacrolix/torrent v1.16.0
-	github.com/anacrolix/multiless v0.0.0-20200413040533-acfd16f65d5d // indirect
+	github.com/benbjohnson/immutable v0.2.1 // indirect
-	github.com/anacrolix/torrent v1.15.2
+	github.com/billziss-gh/cgofuse v1.4.0
 	github.com/elliotchance/orderedmap v1.3.0 // indirect
 	github.com/fatih/color v1.9.0 // indirect
-	github.com/gin-contrib/static v0.0.0-20191128031702-f81c604d8ac2
+	github.com/gin-contrib/static v0.0.0-20200916080430-d45d9a37d28e
 	github.com/gin-gonic/gin v1.6.3
-	github.com/goccy/go-yaml v1.8.0
+	github.com/goccy/go-yaml v1.8.2
-	github.com/golang/protobuf v1.4.2 // indirect
+	github.com/golang/snappy v0.0.2 // indirect
-	github.com/hanwen/go-fuse/v2 v2.0.3
+	github.com/google/uuid v1.1.2 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
+	github.com/marten-seemann/qtls-go1-15 v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.7 // indirect
-	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
+	github.com/pion/dtls/v2 v2.0.3 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/pion/quic v0.1.4 // indirect
-	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/pion/sctp v1.7.11 // indirect
-	github.com/mschoch/smat v0.2.0 // indirect
+	github.com/pion/srtp v1.5.2 // indirect
+	github.com/pion/webrtc/v2 v2.2.26 // indirect
 	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749
-	github.com/sirupsen/logrus v1.6.0
+	github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546 // indirect
+	github.com/sirupsen/logrus v1.7.0
 	github.com/stretchr/testify v1.6.1
-	github.com/tinylib/msgp v1.1.2 // indirect
+	github.com/willf/bitset v1.1.11 // indirect
-	github.com/toorop/gin-logrus v0.0.0-20190701131413-6c374ad36b67
+	golang.org/x/crypto v0.0.0-20201002094018-c90954cbb977 // indirect
-	golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
+	golang.org/x/net v0.0.0-20200930145003-4acb6c075d10 // indirect
-	golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c // indirect
+	golang.org/x/sync v0.0.0-20200930132711-30421366ff76 // indirect
+	golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f // indirect
 	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e // indirect
+	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
+	src.techknowlogick.com/xgo v1.1.1-0.20201014223913-54d7d44a2ff6 // indirect
 )

go.sum

@@ -1,6 +1,18 @@
 bazil.org/fuse v0.0.0-20180421153158-65cc252bf669/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8=
+bazil.org/fuse v0.0.0-20200407214033-5883e5a4b512/go.mod h1:FbcW6z/2VytnFDhZfumh8Ss8zxHE6qpMP5sHTRe0EaM=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo=
+crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797 h1:yDf7ARQc637HoxDho7xjqdvO5ZA2Yb+xzv/fOnnvZzw=
+crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797/go.mod h1:sXBiorCo8c46JlQV3oXPKINnZ8mcqnye1EkVkqsectk=
+crawshaw.io/sqlite v0.3.2 h1:N6IzTjkiw9FItHAa0jp+ZKC6tuLzXqAYIv+ccIWos1I=
+crawshaw.io/sqlite v0.3.2/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
+dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
+dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/RoaringBitmap/roaring v0.4.7/go.mod h1:8khRDP4HmeXns4xIj9oGrKSz7XTQiJx2zgh7AcNke4w=
 github.com/RoaringBitmap/roaring v0.4.17/go.mod h1:D3qVegWTmfCaX4Bl5CrBE9hfrSrrXIr8KVNvRsDi1NI=
@@ -8,14 +20,19 @@ github.com/RoaringBitmap/roaring v0.4.18 h1:nh8Ngxctxt5QAoMLuR7MHJe4jEqpn+EnsdgD
 github.com/RoaringBitmap/roaring v0.4.18/go.mod h1:D3qVegWTmfCaX4Bl5CrBE9hfrSrrXIr8KVNvRsDi1NI=
 github.com/RoaringBitmap/roaring v0.4.21 h1:WJ/zIlNX4wQZ9x8Ey33O1UaD9TCTakYsdLFSBcTwH+8=
 github.com/RoaringBitmap/roaring v0.4.21/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
-github.com/RoaringBitmap/roaring v0.5.0 h1:0psZZWU0J2AUl29BAylpHAsuBEEhCEfTKl2v5yHtXIg=
+github.com/RoaringBitmap/roaring v0.4.23/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
-github.com/RoaringBitmap/roaring v0.5.0/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
+github.com/RoaringBitmap/roaring v0.5.1 h1:ugdwntNygzk1FZnmtxUr+jM9AYrpU3I3zpt49npDWVo=
+github.com/RoaringBitmap/roaring v0.5.1/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
+github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75/go.mod h1:uAXEEpARkRhCZfEvy/y0Jcc888f9tHCc1W7/UeEtreE=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alexflint/go-arg v1.1.0/go.mod h1:3Rj4baqzWaGGmZA2+bVTV8zQOZEjBQAPBnL5xLT+ftY=
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@@ -156,8 +204,11 @@ github.com/glycerine/goconvey v0.0.0-20180728074245-46e3a41ad493/go.mod h1:Ogl1T
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@@ -169,13 +220,22 @@ github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+
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@@ -184,12 +244,16 @@ github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:x
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@@ -197,7 +261,19 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -206,15 +282,16 @@ github.com/gopherjs/gopherjs v0.0.0-20190910122728-9d188e94fb99/go.mod h1:wJfORR
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@@ -222,12 +299,16 @@ github.com/huandu/xstrings v1.2.0/go.mod h1:DvyZB1rfVYsBIigL8HwpZgxHwXozlTgGqn63
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@@ -235,22 +316,37 @@ github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7V
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iio/disk.go

@@ -20,7 +20,7 @@ type DiskTeeReader struct {
 	tr io.Reader
 }
 
-func NewDiskTeeReader(r io.Reader) (*DiskTeeReader, error) {
+func NewDiskTeeReader(r io.Reader) (Reader, error) {
 	fr, err := ioutil.TempFile("", "dtb_tmp")
 	if err != nil {
 		return nil, err

iio/disk_test.go

@@ -11,6 +11,8 @@ import (
 var testData []byte = []byte("Hello World")
 
 func TestReadData(t *testing.T) {
+	t.Parallel()
+
 	require := require.New(t)
 
 	br := bytes.NewReader(testData)
@@ -31,6 +33,8 @@ func TestReadData(t *testing.T) {
 }
 
 func TestReadDataEOF(t *testing.T) {
+	t.Parallel()
+
 	require := require.New(t)
 
 	br := bytes.NewReader(testData)

iio/reader.go

@@ -0,0 +1,9 @@
+package iio
+
+import "io"
+
+type Reader interface {
+	io.ReaderAt
+	io.Closer
+	io.Reader
+}

iio/utils.go

@@ -1,22 +0,0 @@
-package iio
-
-import (
-	"io"
-
-	log "github.com/sirupsen/logrus"
-)
-
-func CloseIfCloseable(r interface{}) error {
-	log.Debug("closing file...")
-	if r == nil {
-		return nil
-	}
-
-	closer, ok := r.(io.Closer)
-	if !ok {
-		log.Debug("file is not implementing close method")
-		return nil
-	}
-
-	return closer.Close()
-}

iio/wrapper.go

@@ -10,9 +10,10 @@ type readAtWrapper struct {
 
 	io.ReadSeeker
 	io.ReaderAt
+	io.Closer
 }
 
-func NewReadAtWrapper(r io.ReadSeeker) io.ReaderAt {
+func NewReadAtWrapper(r io.ReadSeeker) Reader {
 	return &readAtWrapper{ReadSeeker: r}
 }
 
@@ -26,3 +27,12 @@ func (rw *readAtWrapper) ReadAt(p []byte, off int64) (int, error) {
 
 	return rw.Read(p)
 }
+
+func (rw *readAtWrapper) Close() error {
+	c, ok := rw.ReadSeeker.(io.Closer)
+	if !ok {
+		return nil
+	}
+
+	return c.Close()
+}

node/file.go

@@ -1,99 +0,0 @@
-package node
-
-import (
-	"context"
-	"io"
-	"math"
-	"syscall"
-
-	"github.com/ajnavarro/distribyted/iio"
-	"github.com/hanwen/go-fuse/v2/fs"
-	"github.com/hanwen/go-fuse/v2/fuse"
-	log "github.com/sirupsen/logrus"
-)
-
-var _ fs.NodeGetattrer = &File{}
-var _ fs.NodeOpener = &File{}
-var _ fs.NodeReader = &File{}
-var _ fs.NodeFlusher = &File{}
-
-// File is a fuse node for files inside a torrent
-type File struct {
-	fs.Inode
-
-	f         ReaderFunc
-	r         io.ReaderAt
-	len       int64
-	pieceLen  int32
-	numPieces int64
-}
-
-func NewFile(readerFunc ReaderFunc, len int64) *File {
-	return &File{
-		f:   readerFunc,
-		len: len,
-	}
-}
-
-func NewFileWithBlocks(readerFunc ReaderFunc, len int64, pieceLen int32, numPieces int64) *File {
-	return &File{
-		f:         readerFunc,
-		len:       len,
-		pieceLen:  pieceLen,
-		numPieces: numPieces,
-	}
-}
-
-func (tr *File) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
-	out.Mode = syscall.S_IFREG & 0555
-	out.Nlink = 1
-	out.Size = uint64(tr.len)
-	if tr.pieceLen != 0 {
-		out.Blksize = uint32(tr.pieceLen)
-		out.Blocks = uint64(tr.numPieces)
-	}
-
-	return fs.OK
-}
-
-func (tr *File) Open(ctx context.Context, flags uint32) (fh fs.FileHandle, fuseFlags uint32, errno syscall.Errno) {
-	if tr.r == nil {
-		r, err := tr.f()
-		if err != nil {
-			log.WithError(err).Error("error opening reader for file")
-			return nil, 0, syscall.EIO
-		}
-
-		tr.r = r
-	}
-
-	return nil, fuse.FOPEN_KEEP_CACHE, fs.OK
-}
-
-func (tr *File) Read(ctx context.Context, f fs.FileHandle, dest []byte, off int64) (fuse.ReadResult, syscall.Errno) {
-	end := int(math.Min(float64(len(dest)), float64(int64(tr.len)-off)))
-	if end < 0 {
-		end = 0
-	}
-
-	buf := dest[:end]
-
-	n, err := tr.r.ReadAt(buf, off)
-
-	if err != nil && err != io.EOF {
-		log.WithError(err).Error("error reading data")
-		return nil, syscall.EIO
-	}
-
-	buf = buf[:n]
-	return fuse.ReadResultData(buf), fs.OK
-}
-
-func (tr *File) Flush(ctx context.Context, f fs.FileHandle) syscall.Errno {
-	if err := iio.CloseIfCloseable(tr.r); err != nil {
-		log.WithError(err).Error("error closing file")
-		return syscall.EIO
-	}
-
-	return fs.OK
-}

node/root.go

@@ -1,39 +0,0 @@
-package node
-
-import (
-	"context"
-	"path/filepath"
-	"syscall"
-
-	"github.com/anacrolix/torrent"
-	"github.com/hanwen/go-fuse/v2/fs"
-	"github.com/hanwen/go-fuse/v2/fuse"
-)
-
-var _ fs.NodeOnAdder = &Root{}
-var _ fs.NodeGetattrer = &Root{}
-
-type Root struct {
-	fs.Inode
-	torrents []*torrent.Torrent
-}
-
-func NewRoot(torrents []*torrent.Torrent) *Root {
-	return &Root{torrents: torrents}
-}
-
-func (root *Root) OnAdd(ctx context.Context) {
-	for _, torrent := range root.torrents {
-		root.AddChild(
-			filepath.Clean(torrent.Name()),
-			root.NewPersistentInode(ctx, &Torrent{t: torrent}, fs.StableAttr{
-				Mode: syscall.S_IFDIR,
-			}), true)
-	}
-}
-
-func (root *Root) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
-	out.Mode = syscall.S_IFDIR & 0555
-
-	return fs.OK
-}

node/torrent.go

@@ -1,44 +0,0 @@
-package node
-
-import (
-	"context"
-	"io"
-	"syscall"
-
-	"github.com/ajnavarro/distribyted/iio"
-	"github.com/anacrolix/torrent"
-	"github.com/hanwen/go-fuse/v2/fs"
-	"github.com/hanwen/go-fuse/v2/fuse"
-)
-
-var _ fs.NodeGetattrer = &Torrent{}
-var _ fs.NodeOpendirer = &Torrent{}
-
-type Torrent struct {
-	fs.Inode
-	t *torrent.Torrent
-}
-
-func (folder *Torrent) Opendir(ctx context.Context) syscall.Errno {
-	<-folder.t.GotInfo()
-
-	for _, file := range folder.t.Files() {
-		file := file
-		LoadNodeByPath(
-			ctx,
-			file.Path(),
-			func() (io.ReaderAt, error) { return iio.NewReadAtWrapper(file.NewReader()), nil },
-			&folder.Inode,
-			file.Length(),
-			int32(file.Torrent().Info().PieceLength),
-			int64(file.Torrent().Info().NumPieces()),
-		)
-	}
-	return fs.OK
-}
-
-func (folder *Torrent) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
-	out.Mode = syscall.S_IFDIR & 0555
-
-	return fs.OK
-}

node/utils.go

@@ -1,61 +0,0 @@
-package node
-
-import (
-	"context"
-	"io"
-	"path"
-	"path/filepath"
-	"strings"
-	"syscall"
-
-	"github.com/hanwen/go-fuse/v2/fs"
-	"github.com/hanwen/go-fuse/v2/fuse"
-)
-
-type ReaderFunc func() (io.ReaderAt, error)
-
-func LoadNodeByPath(ctx context.Context, fp string, reader ReaderFunc, parent *fs.Inode, fileLength int64, pieceLen int32, numPieces int64) {
-	p := parent
-	dir, base := filepath.Split(filepath.Clean(fp))
-	for i, component := range strings.Split(dir, "/") {
-		if i == 0 {
-			continue
-		}
-
-		if len(component) == 0 {
-			continue
-		}
-
-		ch := p.GetChild(component)
-		if ch == nil {
-			ch = p.NewPersistentInode(ctx, &fs.Inode{},
-				fs.StableAttr{Mode: fuse.S_IFDIR})
-			p.AddChild(component, ch, true)
-		}
-
-		p = ch
-	}
-
-	ext := path.Ext(base)
-	switch ext {
-	case ".zip":
-		n := NewZip(reader, fileLength)
-		p.AddChild(
-			strings.TrimRight(base, ext),
-			p.NewPersistentInode(ctx, n, fs.StableAttr{
-				Mode: fuse.S_IFDIR,
-			}), true)
-	default:
-		n := NewFileWithBlocks(
-			reader,
-			fileLength,
-			pieceLen,
-			numPieces,
-		)
-		p.AddChild(
-			base,
-			p.NewPersistentInode(ctx, n, fs.StableAttr{
-				Mode: syscall.S_IFREG,
-			}), true)
-	}
-}

node/zip.go

@@ -1,81 +0,0 @@
-package node
-
-import (
-	"archive/zip"
-	"context"
-	"io"
-	"syscall"
-
-	"github.com/ajnavarro/distribyted/iio"
-	"github.com/hanwen/go-fuse/v2/fs"
-	"github.com/hanwen/go-fuse/v2/fuse"
-	log "github.com/sirupsen/logrus"
-)
-
-var _ fs.NodeGetattrer = &Zip{}
-var _ fs.NodeOpendirer = &Zip{}
-
-type Zip struct {
-	fs.Inode
-
-	reader ReaderFunc
-	size   int64
-	files  []*zip.File
-}
-
-func NewZip(reader ReaderFunc, size int64) *Zip {
-	return &Zip{
-		reader: reader,
-		size:   size,
-	}
-}
-
-func (z *Zip) Opendir(ctx context.Context) syscall.Errno {
-	if z.files == nil {
-		r, err := z.reader()
-		if err != nil {
-			log.WithError(err).Error("error opening reader for zip")
-			return syscall.EIO
-		}
-		zr, err := zip.NewReader(r, z.size)
-		if err != nil {
-			log.WithError(err).Error("error getting zip reader from reader")
-			return syscall.EIO
-		}
-
-		for _, f := range zr.File {
-			f := f
-			if f.FileInfo().IsDir() {
-				continue
-			}
-			LoadNodeByPath(
-				ctx,
-				f.Name,
-				func() (io.ReaderAt, error) {
-					zfr, err := f.Open()
-					if err != nil {
-						log.WithError(err).Error("error opening zip file")
-						return nil, err
-					}
-
-					return iio.NewDiskTeeReader(zfr)
-				},
-				&z.Inode,
-				int64(f.UncompressedSize64),
-				0,
-				0,
-			)
-		}
-
-		z.files = zr.File
-	}
-
-	return fs.OK
-}
-
-func (z *Zip) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut) syscall.Errno {
-	out.Mode = syscall.S_IFDIR & 0555
-	out.Size = uint64(z.size)
-
-	return fs.OK
-}