minimal tus implmentation

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

cmd/reva/upload.go

@@ -22,13 +22,16 @@ import (
 	"fmt"
 	"io"
 	"math"
-	"net/http"
 	"os"
+	"path/filepath"
 
 	"github.com/cheggaaa/pb"
 	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
 	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
 
+	"github.com/eventials/go-tus"
+	"github.com/eventials/go-tus/memorystore"
+
 	// TODO(labkode): this should not come from this package.
 	"github.com/cs3org/reva/internal/grpc/services/storageprovider"
 	"github.com/cs3org/reva/pkg/crypto"
@@ -65,7 +68,7 @@ func uploadCommand() *command {
 
 		fmt.Printf("Local file size: %d bytes\n", md.Size())
 
-		client, err := getClient()
+		gwc, err := getClient()
 		if err != nil {
 			return err
 		}
@@ -78,7 +81,7 @@ func uploadCommand() *command {
 			},
 		}
 
-		res, err := client.InitiateFileUpload(ctx, req)
+		res, err := gwc.InitiateFileUpload(ctx, req)
 		if err != nil {
 			return err
 		}
@@ -113,39 +116,51 @@ func uploadCommand() *command {
 		bar.Start()
 		reader := bar.NewProxyReader(fd)
 
-		httpReq, err := rhttp.NewRequest(ctx, "PUT", dataServerURL, reader)
+		// create the tus client.
+		c := tus.DefaultConfig()
+		c.Resume = true
+		c.HttpClient = rhttp.GetHTTPClient(ctx)
+		c.Store, err = memorystore.NewMemoryStore()
 		if err != nil {
 			return err
 		}
+		c.Header.Add("X-Reva-Transfer", res.Token)
+		tusc, err := tus.NewClient(dataServerURL, c)
+		if err != nil {
+			return err
+		}
+
+		metadata := map[string]string{
+			"filename": filepath.Base(target),
+			"dir":      filepath.Dir(target),
+			"checksum": fmt.Sprintf("%s %s", storageprovider.GRPC2PKGXS(xsType).String(), xs),
+		}
+
+		fingerprint := fmt.Sprintf("%s-%d-%s-%s", md.Name(), md.Size(), md.ModTime(), xs)
 
-		httpReq.Header.Set("X-Reva-Transfer", res.Token)
-		q := httpReq.URL.Query()
-		q.Add("xs", xs)
-		q.Add("xs_type", storageprovider.GRPC2PKGXS(xsType).String())
-		httpReq.URL.RawQuery = q.Encode()
+		// create an upload from a file.
+		upload := tus.NewUpload(reader, md.Size(), metadata, fingerprint)
 
-		httpClient := rhttp.GetHTTPClient(ctx)
+		// create the uploader.
+		c.Store.Set(upload.Fingerprint, dataServerURL)
+		uploader := tus.NewUploader(tusc, dataServerURL, upload, 0)
 
-		httpRes, err := httpClient.Do(httpReq)
+		// start the uploading process.
+		err = uploader.Upload()
 		if err != nil {
 			return err
 		}
-		defer httpRes.Body.Close()
 
 		bar.Finish()
 
-		if httpRes.StatusCode != http.StatusOK {
-			return err
-		}
-
 		req2 := &provider.StatRequest{
 			Ref: &provider.Reference{
 				Spec: &provider.Reference_Path{
 					Path: target,
 				},
 			},
 		}
-		res2, err := client.Stat(ctx, req2)
+		res2, err := gwc.Stat(ctx, req2)
 		if err != nil {
 			return err
 		}

go.mod

@@ -12,13 +12,14 @@ require (
 	github.com/coreos/go-oidc v2.2.1+incompatible
 	github.com/cs3org/go-cs3apis v0.0.0-20200408065125-6e23f3ecec0a
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/eventials/go-tus v0.0.0-20190617130015-9db47421f6a0
 	github.com/fatih/color v1.7.0 // indirect
 	github.com/go-openapi/strfmt v0.19.2 // indirect
 	github.com/gofrs/uuid v3.2.0+incompatible
 	github.com/golang/protobuf v1.3.5
 	github.com/gomodule/redigo v2.0.0+incompatible
 	github.com/google/uuid v1.1.1
-	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4
+	github.com/grpc-ecosystem/go-grpc-middleware v1.1.0
 	github.com/huandu/xstrings v1.3.0 // indirect
 	github.com/imdario/mergo v0.3.8 // indirect
 	github.com/jedib0t/go-pretty v4.3.0+incompatible
@@ -31,12 +32,12 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/pkg/xattr v0.4.1
 	github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 // indirect
-	github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829 // indirect
 	github.com/rs/cors v1.7.0
 	github.com/rs/zerolog v1.18.0
+	github.com/tus/tusd v1.1.0
 	go.opencensus.io v0.22.3
 	golang.org/x/crypto v0.0.0-20190411191339-88737f569e3a
-	golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421
+	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	google.golang.org/grpc v1.28.1
 	gopkg.in/asn1-ber.v1 v1.0.0-20181015200546-f715ec2f112d // indirect
 	gopkg.in/cheggaaa/pb.v1 v1.0.27 // indirect
@@ -45,3 +46,5 @@ require (
 )
 
 go 1.13
+
+replace github.com/eventials/go-tus => github.com/andrewmostello/go-tus v0.0.0-20200314041820-904a9904af9a

internal/grpc/services/storageprovider/storageprovider.go

@@ -24,6 +24,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"strconv"
 	"strings"
 
 	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
@@ -243,14 +244,30 @@ func (s *service) InitiateFileDownload(ctx context.Context, req *provider.Initia
 func (s *service) InitiateFileUpload(ctx context.Context, req *provider.InitiateFileUploadRequest) (*provider.InitiateFileUploadResponse, error) {
 	// TODO(labkode): same considerations as download
 	log := appctx.GetLogger(ctx)
-	url := *s.dataServerURL
 	newRef, err := s.unwrap(ctx, req.Ref)
 	if err != nil {
 		return &provider.InitiateFileUploadResponse{
 			Status: status.NewInternal(ctx, err, "error unwrapping path"),
 		}, nil
 	}
-	url.Path = path.Join("/", url.Path, newRef.GetPath())
+	var uploadLength int64
+	if req.Opaque != nil && req.Opaque.Map != nil && req.Opaque.Map["Upload-Length"] != nil {
+		var err error
+		uploadLength, err = strconv.ParseInt(string(req.Opaque.Map["Upload-Length"].Value), 10, 64)
+		if err != nil {
+			return &provider.InitiateFileUploadResponse{
+				Status: status.NewInternal(ctx, err, "error parsing upload length"),
+			}, nil
+		}
+	}
+	uploadID, err := s.storage.InitiateUpload(ctx, newRef, uploadLength)
+	if err != nil {
+		return &provider.InitiateFileUploadResponse{
+			Status: status.NewInternal(ctx, err, "error getting upload id"),
+		}, nil
+	}
+	url := *s.dataServerURL
+	url.Path = path.Join("/", url.Path, uploadID)
 	log.Info().Str("data-server", url.String()).
 		Str("fn", req.Ref.GetPath()).
 		Str("xs", fmt.Sprintf("%+v", s.conf.AvailableXS)).

internal/http/services/dataprovider/dataprovider.go

@@ -21,24 +21,23 @@ package dataprovider
 import (
 	"fmt"
 	"net/http"
-	"os"
 
+	"github.com/cs3org/reva/pkg/appctx"
 	"github.com/cs3org/reva/pkg/rhttp/global"
 	"github.com/cs3org/reva/pkg/storage"
 	"github.com/cs3org/reva/pkg/storage/fs/registry"
 	"github.com/mitchellh/mapstructure"
-	"github.com/pkg/errors"
+	tusd "github.com/tus/tusd/pkg/handler"
 )
 
 func init() {
 	global.Register("dataprovider", New)
 }
 
 type config struct {
-	Prefix    string                            `mapstructure:"prefix"`
-	Driver    string                            `mapstructure:"driver"`
-	TmpFolder string                            `mapstructure:"tmp_folder"`
-	Drivers   map[string]map[string]interface{} `mapstructure:"drivers"`
+	Prefix  string                            `mapstructure:"prefix"`
+	Driver  string                            `mapstructure:"driver"`
+	Drivers map[string]map[string]interface{} `mapstructure:"drivers"`
 }
 
 type svc struct {
@@ -54,18 +53,6 @@ func New(m map[string]interface{}) (global.Service, error) {
 		return nil, err
 	}
 
-	if conf.Prefix == "" {
-		conf.Prefix = "data"
-	}
-
-	if conf.TmpFolder == "" {
-		conf.TmpFolder = os.TempDir()
-	}
-
-	if err := os.MkdirAll(conf.TmpFolder, 0755); err != nil {
-		return nil, errors.Wrap(err, "could not create tmp dir")
-	}
-
 	fs, err := getFS(conf)
 	if err != nil {
 		return nil, err
@@ -75,8 +62,8 @@ func New(m map[string]interface{}) (global.Service, error) {
 		storage: fs,
 		conf:    conf,
 	}
-	s.setHandler()
-	return s, nil
+	err = s.setHandler()
+	return s, err
 }
 
 // Close performs cleanup.
@@ -88,6 +75,12 @@ func (s *svc) Unprotected() []string {
 	return []string{}
 }
 
+// Create a new DataStore instance which is responsible for
+// storing the uploaded file on disk in the specified directory.
+// This path _must_ exist before tusd will store uploads in it.
+// If you want to save them on a different medium, for example
+// a remote FTP server, you can implement your own storage backend
+// by implementing the tusd.DataStore interface.
 func getFS(c *config) (storage.FS, error) {
 	if f, ok := registry.NewFuncs[c.Driver]; ok {
 		return f(c.Drivers[c.Driver])
@@ -103,24 +96,83 @@ func (s *svc) Handler() http.Handler {
 	return s.handler
 }
 
-func (s *svc) setHandler() {
-	s.handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		switch r.Method {
-		case "HEAD":
-			addCorsHeader(w)
-			w.WriteHeader(http.StatusOK)
-			return
-		case "GET":
-			s.doGet(w, r)
-			return
-		case "PUT":
-			s.doPut(w, r)
-			return
-		default:
-			w.WriteHeader(http.StatusNotImplemented)
-			return
+// Composable is the interface that a struct needs to implement to be composable by this composer
+type Composable interface {
+	UseIn(composer *tusd.StoreComposer)
+}
+
+func (s *svc) setHandler() (err error) {
+	composable, ok := s.storage.(Composable)
+	if ok {
+		// A storage backend for tusd may consist of multiple different parts which
+		// handle upload creation, locking, termination and so on. The composer is a
+		// place where all those separated pieces are joined together. In this example
+		// we only use the file store but you may plug in multiple.
+		composer := tusd.NewStoreComposer()
+
+		// let the composable storage tell tus which extensions it supports
+		composable.UseIn(composer)
+
+		config := tusd.Config{
+			BasePath:      s.conf.Prefix,
+			StoreComposer: composer,
+			//Logger:        logger, // TODO use logger
+		}
+
+		handler, err := tusd.NewUnroutedHandler(config)
+		if err != nil {
+			return err
 		}
-	})
+
+		s.handler = handler.Middleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+
+			log := appctx.GetLogger(r.Context())
+			log.Info().Msgf("tusd routing: path=%s", r.URL.Path)
+
+			switch r.Method {
+			// old fashioned download.
+
+			// GET is not part of the tus.io protocol
+			// currently there is no way to GET an upload that is in progress
+			// TODO allow range based get requests? that end before the current offset
+			case "GET":
+				s.doGet(w, r)
+
+			// tus.io based upload
+
+			// uploads are initiated using the CS3 APIs Initiate Download call
+			case "POST":
+				handler.PostFile(w, r)
+			case "HEAD":
+				handler.HeadFile(w, r)
+			case "PATCH":
+				handler.PatchFile(w, r)
+			// TODO Only attach the DELETE handler if the Terminate() method is provided
+			case "DELETE":
+				handler.DelFile(w, r)
+			}
+		}))
+	} else {
+		s.handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			switch r.Method {
+			case "HEAD":
+				addCorsHeader(w)
+				w.WriteHeader(http.StatusOK)
+				return
+			case "GET":
+				s.doGet(w, r)
+				return
+			case "PUT":
+				s.doPut(w, r)
+				return
+			default:
+				w.WriteHeader(http.StatusNotImplemented)
+				return
+			}
+		})
+	}
+
+	return err
 }
 
 func addCorsHeader(res http.ResponseWriter) {

pkg/eosclient/eosclient.go

@@ -591,12 +591,8 @@ func (c *Client) Read(ctx context.Context, username, path string) (io.ReadCloser
 	return os.Open(localTarget)
 }
 
-// Write writes a file to the mgm
+// Write writes a stream to the mgm
 func (c *Client) Write(ctx context.Context, username, path string, stream io.ReadCloser) error {
-	unixUser, err := c.getUnixUser(username)
-	if err != nil {
-		return err
-	}
 	fd, err := ioutil.TempFile(c.opt.CacheDirectory, "eoswrite-")
 	if err != nil {
 		return err
@@ -609,8 +605,18 @@ func (c *Client) Write(ctx context.Context, username, path string, stream io.Rea
 	if err != nil {
 		return err
 	}
+
+	return c.WriteFile(ctx, username, path, fd.Name())
+}
+
+// WriteFile writes an existing file to the mgm
+func (c *Client) WriteFile(ctx context.Context, username, path, source string) error {
+	unixUser, err := c.getUnixUser(username)
+	if err != nil {
+		return err
+	}
 	xrdPath := fmt.Sprintf("%s//%s", c.opt.URL, path)
-	cmd := exec.CommandContext(ctx, c.opt.XrdcopyBinary, "--nopbar", "--silent", "-f", fd.Name(), xrdPath, fmt.Sprintf("-ODeos.ruid=%s&eos.rgid=%s", unixUser.Uid, unixUser.Gid))
+	cmd := exec.CommandContext(ctx, c.opt.XrdcopyBinary, "--nopbar", "--silent", "-f", source, xrdPath, fmt.Sprintf("-ODeos.ruid=%s&eos.rgid=%s", unixUser.Uid, unixUser.Gid))
 	_, _, err = c.execute(ctx, cmd)
 	return err
 }