Remove back-compat hacks from for volume plugins.

Hacks were added as interim support for 1.10 but should not be needed
for 1.11.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

integration-cli/docker_cli_volume_driver_compat_unix_test.go

@@ -1,234 +0,0 @@
-// +build !windows
-
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/docker/docker/pkg/integration/checker"
-
-	"github.com/go-check/check"
-)
-
-func init() {
-	check.Suite(&DockerExternalVolumeSuiteCompatV1_1{
-		ds: &DockerSuite{},
-	})
-}
-
-type vol struct {
-	Name       string
-	Mountpoint string
-	Opts       map[string]string
-}
-
-type DockerExternalVolumeSuiteCompatV1_1 struct {
-	server  *httptest.Server
-	ds      *DockerSuite
-	d       *Daemon
-	ec      *eventCounter
-	volList []vol
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) SetUpTest(c *check.C) {
-	s.d = NewDaemon(c)
-	s.ec = &eventCounter{}
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) TearDownTest(c *check.C) {
-	s.d.Stop()
-	s.ds.TearDownTest(c)
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) SetUpSuite(c *check.C) {
-	mux := http.NewServeMux()
-	s.server = httptest.NewServer(mux)
-
-	type pluginRequest struct {
-		Name string
-		Opts map[string]string
-	}
-
-	type pluginResp struct {
-		Mountpoint string `json:",omitempty"`
-		Err        string `json:",omitempty"`
-	}
-
-	read := func(b io.ReadCloser) (pluginRequest, error) {
-		defer b.Close()
-		var pr pluginRequest
-		if err := json.NewDecoder(b).Decode(&pr); err != nil {
-			return pr, err
-		}
-		return pr, nil
-	}
-
-	send := func(w http.ResponseWriter, data interface{}) {
-		switch t := data.(type) {
-		case error:
-			http.Error(w, t.Error(), 500)
-		case string:
-			w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
-			fmt.Fprintln(w, t)
-		default:
-			w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
-			json.NewEncoder(w).Encode(&data)
-		}
-	}
-
-	mux.HandleFunc("/Plugin.Activate", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.activations++
-		send(w, `{"Implements": ["VolumeDriver"]}`)
-	})
-
-	mux.HandleFunc("/VolumeDriver.Create", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.creations++
-		pr, err := read(r.Body)
-		if err != nil {
-			send(w, err)
-			return
-		}
-		s.volList = append(s.volList, vol{Name: pr.Name, Opts: pr.Opts})
-		send(w, nil)
-	})
-
-	mux.HandleFunc("/VolumeDriver.Remove", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.removals++
-		pr, err := read(r.Body)
-		if err != nil {
-			send(w, err)
-			return
-		}
-
-		if err := os.RemoveAll(hostVolumePath(pr.Name)); err != nil {
-			send(w, &pluginResp{Err: err.Error()})
-			return
-		}
-
-		for i, v := range s.volList {
-			if v.Name == pr.Name {
-				if err := os.RemoveAll(hostVolumePath(v.Name)); err != nil {
-					send(w, fmt.Sprintf(`{"Err": "%v"}`, err))
-					return
-				}
-				s.volList = append(s.volList[:i], s.volList[i+1:]...)
-				break
-			}
-		}
-		send(w, nil)
-	})
-
-	mux.HandleFunc("/VolumeDriver.Path", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.paths++
-
-		pr, err := read(r.Body)
-		if err != nil {
-			send(w, err)
-			return
-		}
-		p := hostVolumePath(pr.Name)
-		send(w, &pluginResp{Mountpoint: p})
-	})
-
-	mux.HandleFunc("/VolumeDriver.Mount", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.mounts++
-
-		pr, err := read(r.Body)
-		if err != nil {
-			send(w, err)
-			return
-		}
-
-		p := hostVolumePath(pr.Name)
-		if err := os.MkdirAll(p, 0755); err != nil {
-			send(w, &pluginResp{Err: err.Error()})
-			return
-		}
-
-		if err := ioutil.WriteFile(filepath.Join(p, "test"), []byte(s.server.URL), 0644); err != nil {
-			send(w, err)
-			return
-		}
-
-		send(w, &pluginResp{Mountpoint: p})
-	})
-
-	mux.HandleFunc("/VolumeDriver.Unmount", func(w http.ResponseWriter, r *http.Request) {
-		s.ec.unmounts++
-
-		_, err := read(r.Body)
-		if err != nil {
-			send(w, err)
-			return
-		}
-
-		send(w, nil)
-	})
-
-	err := os.MkdirAll("/etc/docker/plugins", 0755)
-	c.Assert(err, checker.IsNil)
-
-	err = ioutil.WriteFile("/etc/docker/plugins/test-external-volume-driver.spec", []byte(s.server.URL), 0644)
-	c.Assert(err, checker.IsNil)
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) TearDownSuite(c *check.C) {
-	s.server.Close()
-
-	err := os.RemoveAll("/etc/docker/plugins")
-	c.Assert(err, checker.IsNil)
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) TestExternalVolumeDriverCompatV1_1(c *check.C) {
-	err := s.d.StartWithBusybox()
-	c.Assert(err, checker.IsNil)
-
-	out, err := s.d.Cmd("run", "--name=test", "-v", "foo:/bar", "--volume-driver", "test-external-volume-driver", "busybox", "sh", "-c", "echo hello > /bar/hello")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-	out, err = s.d.Cmd("rm", "test")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-
-	out, err = s.d.Cmd("run", "--name=test2", "-v", "foo:/bar", "busybox", "cat", "/bar/hello")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-	c.Assert(strings.TrimSpace(out), checker.Equals, "hello")
-
-	err = s.d.Restart()
-	c.Assert(err, checker.IsNil)
-
-	out, err = s.d.Cmd("start", "-a", "test2")
-	c.Assert(strings.TrimSpace(out), checker.Equals, "hello")
-
-	out, err = s.d.Cmd("rm", "test2")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-
-	out, err = s.d.Cmd("volume", "inspect", "foo")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-
-	out, err = s.d.Cmd("volume", "rm", "foo")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-}
-
-func (s *DockerExternalVolumeSuiteCompatV1_1) TestExternalVolumeDriverCompatOptionsV1_1(c *check.C) {
-	err := s.d.StartWithBusybox()
-	c.Assert(err, checker.IsNil)
-
-	out, err := s.d.Cmd("volume", "create", "--name", "optvol", "--driver", "test-external-volume-driver", "--opt", "opt1=opt1val", "--opt", "opt2=opt2val")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-
-	out, err = s.d.Cmd("volume", "inspect", "optvol")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-
-	c.Assert(s.volList[0].Opts["opt1"], checker.Equals, "opt1val")
-	c.Assert(s.volList[0].Opts["opt2"], checker.Equals, "opt2val")
-
-	out, err = s.d.Cmd("volume", "rm", "optvol")
-	c.Assert(err, checker.IsNil, check.Commentf(out))
-}

volume/drivers/adapter.go

@@ -1,9 +1,6 @@
 package volumedrivers
 
-import (
-	"github.com/docker/docker/pkg/plugins"
-	"github.com/docker/docker/volume"
-)
+import "github.com/docker/docker/volume"
 
 type volumeDriverAdapter struct {
 	name  string
@@ -15,21 +12,7 @@ func (a *volumeDriverAdapter) Name() string {
 }
 
 func (a *volumeDriverAdapter) Create(name string, opts map[string]string) (volume.Volume, error) {
-	// First try a Get. For drivers that support Get this will return any
-	// existing volume.
-	v, err := a.proxy.Get(name)
-	if v != nil {
-		return &volumeAdapter{
-			proxy:      a.proxy,
-			name:       v.Name,
-			driverName: a.Name(),
-			eMount:     v.Mountpoint,
-		}, nil
-	}
-
-	// Driver didn't support Get or volume didn't exist. Perform Create.
-	err = a.proxy.Create(name, opts)
-	if err != nil {
+	if err := a.proxy.Create(name, opts); err != nil {
 		return nil, err
 	}
 	return &volumeAdapter{
@@ -63,11 +46,7 @@ func (a *volumeDriverAdapter) List() ([]volume.Volume, error) {
 func (a *volumeDriverAdapter) Get(name string) (volume.Volume, error) {
 	v, err := a.proxy.Get(name)
 	if err != nil {
-		// TODO: remove this hack. Allows back compat with volume drivers that don't support this call
-		if !plugins.IsNotFound(err) {
-			return nil, err
-		}
-		return a.Create(name, nil)
+		return nil, err
 	}
 
 	return &volumeAdapter{