poc: server side space defaults

Signed-off-by: jkoberg <jkoberg@owncloud.com>

services/graph/pkg/config/config.go

@@ -45,6 +45,7 @@ type Spaces struct {
 	ExtendedSpacePropertiesCacheTTL int    `yaml:"extended_space_properties_cache_ttl" env:"GRAPH_SPACES_EXTENDED_SPACE_PROPERTIES_CACHE_TTL" desc:"Max TTL in seconds for the spaces property cache." introductionVersion:"pre5.0"`
 	UsersCacheTTL                   int    `yaml:"users_cache_ttl" env:"GRAPH_SPACES_USERS_CACHE_TTL" desc:"Max TTL in seconds for the spaces users cache." introductionVersion:"pre5.0"`
 	GroupsCacheTTL                  int    `yaml:"groups_cache_ttl" env:"GRAPH_SPACES_GROUPS_CACHE_TTL" desc:"Max TTL in seconds for the spaces groups cache." introductionVersion:"pre5.0"`
+	TemplatePath                    string `yaml:"template_path" env:"GRAPH_SPACES_TEMPLATE_PATH" desc:"The path to a folder containg files and folder that should be created on any space." introductionVersion:"5.0"`
 }
 
 type LDAP struct {

services/graph/pkg/service/v0/drives.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"io/fs"
 	"math"
 	"net/http"
 	"net/url"
@@ -488,6 +489,26 @@ func (g Graph) CreateDrive(w http.ResponseWriter, r *http.Request) {
 		errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
 		return
 	}
+
+	ctx, cs3, err := g.getCS3Client(gatewayClient, resp.GetStorageSpace().GetRoot())
+	if err != nil {
+		logger.Error().Err(err).Msg("could not get cs3 client")
+		errorcode.ServiceNotAvailable.Render(w, r, http.StatusInternalServerError, "could not get cs3 client, aborting")
+		return
+	}
+
+	fsys, err := fs.Sub(_spaceTemplateFS, "spacetemplate")
+	if err != nil {
+		logger.Error().Err(err).Msg("could not create drive: error parsing fs")
+		errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	if err := applyTemplate(ctx, cs3, gatewayClient, resp.GetStorageSpace().GetRoot(), fsys.(fs.ReadDirFS)); err != nil {
+		logger.Error().Err(err).Msg("could not apply template to space")
+		return
+	}
+
 	render.Status(r, http.StatusCreated)
 	render.JSON(w, r, newDrive)
 }

services/graph/pkg/service/v0/service.go

@@ -3,6 +3,7 @@ package svc
 import (
 	"crypto/tls"
 	"crypto/x509"
+	"embed"
 	"errors"
 	"fmt"
 	"net/http"
@@ -35,6 +36,11 @@ const (
 	displayNameAttr = "displayName"
 )
 
+var (
+	//go:embed spacetemplate/*
+	_spaceTemplateFS embed.FS
+)
+
 // Service defines the service handlers.
 type Service interface {
 	ServeHTTP(http.ResponseWriter, *http.Request)

services/graph/pkg/service/v0/spacetemplate/.space/readme.md

@@ -0,0 +1 @@
+Space description goes here

services/graph/pkg/service/v0/utils.go

@@ -3,14 +3,22 @@ package svc
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"io"
+	"io/fs"
 	"net/http"
+	"os"
+	"path/filepath"
 	"reflect"
+	"strings"
 
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
 	cs3User "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
+	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
 	collaboration "github.com/cs3org/go-cs3apis/cs3/sharing/collaboration/v1beta1"
 	storageprovider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+	v1beta1 "github.com/cs3org/go-cs3apis/cs3/types/v1beta1"
+	"github.com/cs3org/reva/v2/pkg/storage/utils/metadata"
 	"github.com/cs3org/reva/v2/pkg/storagespace"
 	"github.com/cs3org/reva/v2/pkg/utils"
 	"golang.org/x/sync/errgroup"
@@ -425,3 +433,92 @@ func cs3ReceivedShareToLibreGraphPermissions(ctx context.Context, logger *log.Lo
 
 	return permission, nil
 }
+
+func (g Graph) getCS3Client(gwc gateway.GatewayAPIClient, root *storageprovider.ResourceId) (context.Context, *metadata.CS3, error) {
+	mdc := metadata.NewCS3(g.config.Reva.Address, "com.owncloud.api.storage-users")
+	mdc.SpaceRoot = root
+	ctx, err := utils.GetServiceUserContext(g.config.ServiceAccount.ServiceAccountID, gwc, g.config.ServiceAccount.ServiceAccountSecret)
+	return ctx, mdc, err
+}
+
+func applyTemplate(ctx context.Context, mdc *metadata.CS3, gwc gateway.GatewayAPIClient, root *storageprovider.ResourceId, fsys fs.ReadDirFS) error {
+	entries, err := fsys.ReadDir(".")
+	if err != nil {
+		return err
+	}
+
+	updateSpaceRequest := &storageprovider.UpdateStorageSpaceRequest{
+		// Prepare the object to apply the diff from. The properties on StorageSpace will overwrite
+		// the original storage space.
+		StorageSpace: &storageprovider.StorageSpace{
+			Id: &storageprovider.StorageSpaceId{
+				OpaqueId: storagespace.FormatResourceID(*root),
+			},
+			Root: root,
+		},
+	}
+
+	updateSpaceRequest.StorageSpace.Opaque, err = uploadFolder(ctx, mdc, "", "", updateSpaceRequest.StorageSpace.Opaque, fsys, entries)
+	if err != nil {
+		return err
+	}
+
+	if len(updateSpaceRequest.StorageSpace.Opaque.Map) == 0 {
+		return nil
+	}
+
+	resp, err := gwc.UpdateStorageSpace(ctx, updateSpaceRequest)
+	switch {
+	case err != nil:
+		return err
+	case resp.Status.Code == rpc.Code_CODE_OK:
+		return nil
+	default:
+		return errors.New(resp.Status.Message)
+	}
+}
+
+func uploadFolder(ctx context.Context, mdc *metadata.CS3, pathOnDisc, pathOnSpace string, opaque *v1beta1.Opaque, fsys fs.ReadDirFS, entries []os.DirEntry) (*v1beta1.Opaque, error) {
+	for _, entry := range entries {
+		spacePath := filepath.Join(pathOnSpace, entry.Name())
+		discPath := filepath.Join(pathOnDisc, entry.Name())
+
+		if entry.IsDir() {
+			err := mdc.MakeDirIfNotExist(ctx, spacePath)
+			if err != nil {
+				return opaque, err
+			}
+
+			entries, err := fsys.ReadDir(discPath)
+			if err != nil {
+				return opaque, err
+			}
+
+			opaque, err = uploadFolder(ctx, mdc, discPath, spacePath, opaque, fsys, entries)
+			if err != nil {
+				return opaque, err
+			}
+			continue
+		}
+
+		b, err := fs.ReadFile(fsys, discPath)
+		if err != nil {
+			return opaque, err
+		}
+
+		if err := mdc.SimpleUpload(ctx, spacePath, b); err != nil {
+			return opaque, err
+		}
+
+		// TODO: use upload to avoid second stat
+		i, err := mdc.Stat(ctx, spacePath)
+		if err != nil {
+			return opaque, err
+		}
+
+		identifier := strings.TrimSuffix(entry.Name(), filepath.Ext(entry.Name()))
+		opaque = utils.AppendPlainToOpaque(opaque, identifier, storagespace.FormatResourceID(*i.Id))
+	}
+
+	return opaque, nil
+}