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Signed-off-by: Victor Vieux <victorvieux@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "os" | ||
| "path/filepath" | ||
| "sync" | ||
|
|
||
| "github.com/Sirupsen/logrus" | ||
| "github.com/docker/go-plugins-helpers/volume" | ||
| ) | ||
|
|
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| const socketAddress = "/run/docker/plugins/sshfs.sock" | ||
|
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| type sshfsDriver struct { | ||
| sync.RWMutex | ||
|
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| root string | ||
| statePath string | ||
| volumes map[string]*sshfsVolume | ||
| } | ||
|
|
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| func newSshfsDriver(root string) (*sshfsDriver, error) { | ||
| logrus.WithField("method", "new driver").Debug(root) | ||
|
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| statePath := filepath.Join(root, "state", "sshfs-state.json") | ||
| volumes, err := readState(statePath) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &sshfsDriver{ | ||
| root: filepath.Join(root, "volumes"), | ||
| statePath: statePath, | ||
| volumes: volumes, | ||
| }, nil | ||
| } | ||
|
|
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| func (d *sshfsDriver) Create(r *volume.CreateRequest) error { | ||
| logrus.WithField("method", "create").Debugf("%#v", r) | ||
|
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| v, err := newSshfsVolume(d.root, r.Options) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| d.Lock() | ||
| defer d.Unlock() | ||
|
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| d.volumes[r.Name] = v | ||
|
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| return saveState(d.statePath, d.volumes) | ||
| } | ||
|
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| func (d *sshfsDriver) Remove(r *volume.RemoveRequest) error { | ||
| logrus.WithField("method", "remove").Debugf("%#v", r) | ||
|
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| d.Lock() | ||
| defer d.Unlock() | ||
|
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| v, ok := d.volumes[r.Name] | ||
| if !ok { | ||
| return logError("volume %s not found", r.Name) | ||
| } | ||
|
|
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| if v.connections != 0 { | ||
| return logError("volume %s is currently used by a container", r.Name) | ||
| } | ||
|
|
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| if err := os.RemoveAll(v.Mountpoint); err != nil { | ||
| return logError(err.Error()) | ||
| } | ||
|
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| delete(d.volumes, r.Name) | ||
|
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| return saveState(d.statePath, d.volumes) | ||
| } | ||
|
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| func (d *sshfsDriver) Path(r *volume.PathRequest) (*volume.PathResponse, error) { | ||
| logrus.WithField("method", "path").Debugf("%#v", r) | ||
|
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| d.RLock() | ||
| defer d.RUnlock() | ||
|
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| v, ok := d.volumes[r.Name] | ||
| if !ok { | ||
| return &volume.PathResponse{}, logError("volume %s not found", r.Name) | ||
| } | ||
|
|
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| return &volume.PathResponse{Mountpoint: v.Mountpoint}, nil | ||
| } | ||
|
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| func (d *sshfsDriver) Mount(r *volume.MountRequest) (*volume.MountResponse, error) { | ||
| logrus.WithField("method", "mount").Debugf("%#v", r) | ||
|
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| d.Lock() | ||
| defer d.Unlock() | ||
|
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| v, ok := d.volumes[r.Name] | ||
| if !ok { | ||
| return &volume.MountResponse{}, logError("volume %s not found", r.Name) | ||
| } | ||
|
|
||
| if v.connections == 0 { | ||
| fi, err := os.Lstat(v.Mountpoint) | ||
| if os.IsNotExist(err) { | ||
| if err := os.MkdirAll(v.Mountpoint, 0755); err != nil { | ||
| return &volume.MountResponse{}, logError(err.Error()) | ||
| } | ||
| } else if err != nil { | ||
| return &volume.MountResponse{}, logError(err.Error()) | ||
| } | ||
|
|
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| if fi != nil && !fi.IsDir() { | ||
| return &volume.MountResponse{}, logError("%v already exist and it's not a directory", v.Mountpoint) | ||
| } | ||
|
|
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| if err := mountVolume(v); err != nil { | ||
| return &volume.MountResponse{}, logError(err.Error()) | ||
| } | ||
| } | ||
|
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| v.connections++ | ||
|
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| return &volume.MountResponse{Mountpoint: v.Mountpoint}, nil | ||
| } | ||
|
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| func (d *sshfsDriver) Unmount(r *volume.UnmountRequest) error { | ||
| logrus.WithField("method", "unmount").Debugf("%#v", r) | ||
|
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| d.Lock() | ||
| defer d.Unlock() | ||
|
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| v, ok := d.volumes[r.Name] | ||
| if !ok { | ||
| return logError("volume %s not found", r.Name) | ||
| } | ||
|
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| v.connections-- | ||
|
|
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| if v.connections <= 0 { | ||
| if err := unmountVolume(v.Mountpoint); err != nil { | ||
| return logError(err.Error()) | ||
| } | ||
| v.connections = 0 | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| func (d *sshfsDriver) Get(r *volume.GetRequest) (*volume.GetResponse, error) { | ||
| logrus.WithField("method", "get").Debugf("%#v", r) | ||
|
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| d.RLock() | ||
| defer d.RUnlock() | ||
|
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| v, ok := d.volumes[r.Name] | ||
| if !ok { | ||
| return &volume.GetResponse{}, logError("volume %s not found", r.Name) | ||
| } | ||
|
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| return &volume.GetResponse{Volume: &volume.Volume{Name: r.Name, Mountpoint: v.Mountpoint}}, nil | ||
| } | ||
|
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| func (d *sshfsDriver) List() (*volume.ListResponse, error) { | ||
| logrus.WithField("method", "list").Debug("") | ||
|
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| d.RLock() | ||
| defer d.RUnlock() | ||
|
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| var vols []*volume.Volume | ||
| for name, v := range d.volumes { | ||
| vols = append(vols, &volume.Volume{Name: name, Mountpoint: v.Mountpoint}) | ||
| } | ||
| return &volume.ListResponse{Volumes: vols}, nil | ||
| } | ||
|
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| func (d *sshfsDriver) Capabilities() *volume.CapabilitiesResponse { | ||
| logrus.WithField("method", "capabilities").Debug("") | ||
|
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| return &volume.CapabilitiesResponse{Capabilities: volume.Capability{Scope: "local"}} | ||
| } |
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