forked from ethereum/go-ethereum
-
Notifications
You must be signed in to change notification settings - Fork 4
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
swarm/api: support mounting manifests via FUSE (ethereum#3690)
- Loading branch information
Showing
44 changed files
with
7,005 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| // Copyright 2017 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| // +build !windows | ||
|
|
||
| package api | ||
|
|
||
| import ( | ||
| "io" | ||
| "os" | ||
|
|
||
| "bazil.org/fuse" | ||
| "bazil.org/fuse/fs" | ||
| "github.com/ethereum/go-ethereum/log" | ||
| "github.com/ethereum/go-ethereum/swarm/storage" | ||
| "golang.org/x/net/context" | ||
| ) | ||
|
|
||
|
|
||
|
|
||
|
|
||
| // Data structures used for Fuse filesystem, serving directories and serving files to Fuse driver | ||
| type FS struct { | ||
| root *Dir | ||
| } | ||
|
|
||
| type Dir struct { | ||
| inode uint64 | ||
| name string | ||
| path string | ||
| directories []*Dir | ||
| files []*File | ||
| } | ||
|
|
||
| type File struct { | ||
| inode uint64 | ||
| name string | ||
| path string | ||
| key storage.Key | ||
| swarmApi *Api | ||
| fileSize uint64 | ||
| reader storage.LazySectionReader | ||
| } | ||
|
|
||
|
|
||
| // Functions which satisfy the Fuse File System requests | ||
| func (filesystem *FS) Root() (fs.Node, error) { | ||
| return filesystem.root, nil | ||
| } | ||
|
|
||
| func (directory *Dir) Attr(ctx context.Context, a *fuse.Attr) error { | ||
| a.Inode = directory.inode | ||
| //TODO: need to get permission as argument | ||
| a.Mode = os.ModeDir | 0500 | ||
| a.Uid = uint32(os.Getuid()) | ||
| a.Gid = uint32(os.Getegid()) | ||
| return nil | ||
| } | ||
|
|
||
| func (directory *Dir) Lookup(ctx context.Context, name string) (fs.Node, error) { | ||
| if directory.files != nil { | ||
| for _, n := range directory.files { | ||
| if n.name == name { | ||
| return n, nil | ||
| } | ||
| } | ||
| } | ||
| if directory.directories != nil { | ||
| for _, n := range directory.directories { | ||
| if n.name == name { | ||
| return n, nil | ||
| } | ||
| } | ||
| } | ||
| return nil, fuse.ENOENT | ||
| } | ||
|
|
||
| func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) { | ||
| var children []fuse.Dirent | ||
| if d.files != nil { | ||
| for _, file := range d.files { | ||
| children = append(children, fuse.Dirent{Inode: file.inode, Type: fuse.DT_File, Name: file.name}) | ||
| } | ||
| } | ||
| if d.directories != nil { | ||
| for _, dir := range d.directories { | ||
| children = append(children, fuse.Dirent{Inode: dir.inode, Type: fuse.DT_Dir, Name: dir.name}) | ||
| } | ||
| } | ||
| return children, nil | ||
| } | ||
|
|
||
| func (file *File) Attr(ctx context.Context, a *fuse.Attr) error { | ||
|
|
||
| a.Inode = file.inode | ||
| //TODO: need to get permission as argument | ||
| a.Mode = 0500 | ||
| a.Uid = uint32(os.Getuid()) | ||
| a.Gid = uint32(os.Getegid()) | ||
|
|
||
|
|
||
| reader := file.swarmApi.Retrieve(file.key) | ||
| quitC := make(chan bool) | ||
| size, err := reader.Size(quitC) | ||
| if err != nil { | ||
| log.Warn("Couldnt file size of file %s : %v", file.path, err) | ||
| a.Size = uint64(0) | ||
| } | ||
| a.Size = uint64(size) | ||
| file.fileSize = a.Size | ||
| return nil | ||
| } | ||
|
|
||
| var _ = fs.HandleReader(&File{}) | ||
|
|
||
| func (file *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error { | ||
| buf := make([]byte, req.Size) | ||
| reader := file.swarmApi.Retrieve(file.key) | ||
| n, err := reader.ReadAt(buf, req.Offset) | ||
| if err == io.ErrUnexpectedEOF || err == io.EOF { | ||
| err = nil | ||
| } | ||
| resp.Data = buf[:n] | ||
| return err | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // Copyright 2017 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package api | ||
|
|
||
| import ( | ||
| "time" | ||
| "sync" | ||
| ) | ||
|
|
||
| const ( | ||
| Swarmfs_Version = "0.1" | ||
| mountTimeout = time.Second * 5 | ||
| maxFuseMounts = 5 | ||
| ) | ||
|
|
||
|
|
||
| type SwarmFS struct { | ||
| swarmApi *Api | ||
| activeMounts map[string]*MountInfo | ||
| activeLock *sync.RWMutex | ||
| } | ||
|
|
||
|
|
||
|
|
||
| func NewSwarmFS(api *Api) *SwarmFS { | ||
| swarmfs := &SwarmFS{ | ||
| swarmApi: api, | ||
| activeLock: &sync.RWMutex{}, | ||
| activeMounts: map[string]*MountInfo{}, | ||
| } | ||
| return swarmfs | ||
| } | ||
|
|
||
|
|
Oops, something went wrong.