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d3eca4451d
Makes `docker volume ls` and `docker volume inspect` ask the volume drivers rather than only using what is cached locally. Previously in order to use a volume from an external driver, one would either have to use `docker volume create` or have a container that is already using that volume for it to be visible to the other volume API's. For keeping uniqueness of volume names in the daemon, names are bound to a driver on a first come first serve basis. If two drivers have a volume with the same name, the first one is chosen, and a warning is logged about the second one. Adds 2 new methods to the plugin API, `List` and `Get`. If a plugin does not implement these endpoints, a user will not be able to find the specified volumes as well requests go through the drivers. Signed-off-by: Brian Goff <cpuguy83@gmail.com>
97 lines
1.8 KiB
Go
97 lines
1.8 KiB
Go
package volumedrivers
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import "github.com/docker/docker/volume"
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type volumeDriverAdapter struct {
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name string
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proxy *volumeDriverProxy
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}
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func (a *volumeDriverAdapter) Name() string {
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return a.name
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}
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func (a *volumeDriverAdapter) Create(name string, opts map[string]string) (volume.Volume, error) {
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err := a.proxy.Create(name, opts)
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if err != nil {
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return nil, err
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}
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return &volumeAdapter{
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proxy: a.proxy,
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name: name,
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driverName: a.name}, nil
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}
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func (a *volumeDriverAdapter) Remove(v volume.Volume) error {
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return a.proxy.Remove(v.Name())
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}
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func (a *volumeDriverAdapter) List() ([]volume.Volume, error) {
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ls, err := a.proxy.List()
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if err != nil {
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return nil, err
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}
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var out []volume.Volume
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for _, vp := range ls {
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out = append(out, &volumeAdapter{
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proxy: a.proxy,
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name: vp.Name,
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driverName: a.name,
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eMount: vp.Mountpoint,
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})
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}
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return out, nil
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}
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func (a *volumeDriverAdapter) Get(name string) (volume.Volume, error) {
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v, err := a.proxy.Get(name)
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if err != nil {
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return nil, err
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}
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return &volumeAdapter{
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proxy: a.proxy,
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name: v.Name,
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driverName: a.Name(),
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eMount: v.Mountpoint,
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}, nil
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}
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type volumeAdapter struct {
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proxy *volumeDriverProxy
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name string
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driverName string
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eMount string // ephemeral host volume path
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}
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type proxyVolume struct {
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Name string
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Mountpoint string
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}
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func (a *volumeAdapter) Name() string {
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return a.name
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}
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func (a *volumeAdapter) DriverName() string {
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return a.driverName
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}
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func (a *volumeAdapter) Path() string {
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if len(a.eMount) > 0 {
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return a.eMount
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}
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m, _ := a.proxy.Path(a.name)
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return m
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}
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func (a *volumeAdapter) Mount() (string, error) {
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var err error
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a.eMount, err = a.proxy.Mount(a.name)
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return a.eMount, err
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}
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func (a *volumeAdapter) Unmount() error {
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return a.proxy.Unmount(a.name)
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}
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