refactor: remove ceph volume plugin

Makefile

@@ -76,7 +76,6 @@ validate-swagger: ## run swagger validate
 .PHONY: modules
 modules:
 	@./hack/module --clean
-	@./hack/module --add-volume=github.com/alibaba/pouch/storage/volume/modules/ceph
 	@./hack/module --add-volume=github.com/alibaba/pouch/storage/volume/modules/tmpfs
 	@./hack/module --add-volume=github.com/alibaba/pouch/storage/volume/modules/local
 

apis/server/volume_bridge.go

@@ -38,11 +38,7 @@ func (s *Server) createVolume(ctx context.Context, rw http.ResponseWriter, req *
 		driver = volumetypes.DefaultBackend
 	}
 
-	if err := s.VolumeMgr.Create(ctx, name, driver, options, labels); err != nil {
-		return err
-	}
-
-	volume, err := s.VolumeMgr.Get(ctx, name)
+	volume, err := s.VolumeMgr.Create(ctx, name, driver, options, labels)
 	if err != nil {
 		return err
 	}

daemon/mgr/container.go

@@ -1771,7 +1771,7 @@ func (mgr *ContainerManager) attachVolume(ctx context.Context, name string, meta
 		opts := map[string]string{
 			"backend": driver,
 		}
-		if err := mgr.VolumeMgr.Create(ctx, name, meta.HostConfig.VolumeDriver, opts, nil); err != nil {
+		if _, err := mgr.VolumeMgr.Create(ctx, name, meta.HostConfig.VolumeDriver, opts, nil); err != nil {
 			logrus.Errorf("failed to create volume: %s, err: %v", name, err)
 			return "", "", errors.Wrap(err, "failed to create volume")
 		}

daemon/mgr/volume.go

@@ -3,7 +3,6 @@ package mgr
 import (
 	"context"
 	"os"
-	"path"
 	"strings"
 
 	"github.com/alibaba/pouch/pkg/errtypes"
@@ -16,7 +15,7 @@ import (
 // VolumeMgr defines interface to manage container volume.
 type VolumeMgr interface {
 	// Create is used to create volume.
-	Create(ctx context.Context, name, driver string, options, labels map[string]string) error
+	Create(ctx context.Context, name, driver string, options, labels map[string]string) (*types.Volume, error)
 
 	// Get returns the information of volume that specified name/id.
 	Get(ctx context.Context, name string) (*types.Volume, error)
@@ -59,33 +58,25 @@ func NewVolumeManager(cfg volume.Config) (*VolumeManager, error) {
 }
 
 // Create is used to create volume.
-func (vm *VolumeManager) Create(ctx context.Context, name, driver string, options, labels map[string]string) error {
+func (vm *VolumeManager) Create(ctx context.Context, name, driver string, options, labels map[string]string) (*types.Volume, error) {
+	if driver == "" {
+		driver = types.DefaultBackend
+	}
+
 	id := types.VolumeID{
 		Name:      name,
 		Driver:    driver,
 		Options:   map[string]string{},
 		Selectors: map[string]string{},
+		Labels:    map[string]string{},
 	}
 
 	if labels != nil {
 		id.Labels = labels
-	} else {
-		id.Labels = map[string]string{}
-	}
-
-	for key, opt := range options {
-		if strings.HasPrefix(key, "selector.") {
-			key = strings.TrimPrefix(key, "selector.")
-			id.Selectors[key] = opt
-			continue
-		}
-
-		id.Options[key] = opt
 	}
 
-	// set default volume mount path
-	if mount, ok := id.Options["mount"]; !ok || mount == "" {
-		id.Options["mount"] = path.Dir(vm.core.VolumeMetaPath)
+	if options != nil {
+		id.Options = options
 	}
 
 	return vm.core.CreateVolume(id)