github.com/psychoss/docker@v1.9.0/daemon/graphdriver/plugin.go (about)

     1  // +build experimental
     2  // +build daemon
     3  
     4  package graphdriver
     5  
     6  import (
     7  	"fmt"
     8  	"io"
     9  
    10  	"github.com/docker/docker/pkg/plugins"
    11  )
    12  
    13  type pluginClient interface {
    14  	// Call calls the specified method with the specified arguments for the plugin.
    15  	Call(string, interface{}, interface{}) error
    16  	// Stream calls the specified method with the specified arguments for the plugin and returns the response IO stream
    17  	Stream(string, interface{}) (io.ReadCloser, error)
    18  	// SendFile calls the specified method, and passes through the IO stream
    19  	SendFile(string, io.Reader, interface{}) error
    20  }
    21  
    22  func lookupPlugin(name, home string, opts []string) (Driver, error) {
    23  	pl, err := plugins.Get(name, "GraphDriver")
    24  	if err != nil {
    25  		return nil, fmt.Errorf("Error looking up graphdriver plugin %s: %v", name, err)
    26  	}
    27  	return newPluginDriver(name, home, opts, pl.Client)
    28  }
    29  
    30  func newPluginDriver(name, home string, opts []string, c pluginClient) (Driver, error) {
    31  	proxy := &graphDriverProxy{name, c}
    32  	return proxy, proxy.Init(home, opts)
    33  }