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- package graphdriver
- import (
- "fmt"
- "io"
- "path/filepath"
- "github.com/docker/docker/pkg/plugingetter"
- "github.com/docker/docker/plugin/v2"
- )
- type pluginClient interface {
- // Call calls the specified method with the specified arguments for the plugin.
- Call(string, interface{}, interface{}) error
- // Stream calls the specified method with the specified arguments for the plugin and returns the response IO stream
- Stream(string, interface{}) (io.ReadCloser, error)
- // SendFile calls the specified method, and passes through the IO stream
- SendFile(string, io.Reader, interface{}) error
- }
- func lookupPlugin(name string, pg plugingetter.PluginGetter, config Options) (Driver, error) {
- if !config.ExperimentalEnabled {
- return nil, fmt.Errorf("graphdriver plugins are only supported with experimental mode")
- }
- pl, err := pg.Get(name, "GraphDriver", plugingetter.Acquire)
- if err != nil {
- return nil, fmt.Errorf("Error looking up graphdriver plugin %s: %v", name, err)
- }
- return newPluginDriver(name, pl, config)
- }
- func newPluginDriver(name string, pl plugingetter.CompatPlugin, config Options) (Driver, error) {
- home := config.Root
- if !pl.IsV1() {
- if p, ok := pl.(*v2.Plugin); ok {
- if p.PropagatedMount != "" {
- home = p.PluginObj.Config.PropagatedMount
- }
- }
- }
- proxy := &graphDriverProxy{name, pl, Capabilities{}}
- return proxy, proxy.Init(filepath.Join(home, name), config.DriverOptions, config.UIDMaps, config.GIDMaps)
- }
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