add -filer.path to webdav command (#4061)

weed/command/webdav.go

@@ -13,7 +13,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
 	"github.com/seaweedfs/seaweedfs/weed/security"
-	"github.com/seaweedfs/seaweedfs/weed/server"
+	weed_server "github.com/seaweedfs/seaweedfs/weed/server"
 	"github.com/seaweedfs/seaweedfs/weed/util"
 )
 
@@ -23,6 +23,7 @@ var (
 
 type WebDavOption struct {
 	filer          *string
+	filerRootPath  *string
 	port           *int
 	collection     *string
 	replication    *string
@@ -44,6 +45,7 @@ func init() {
 	webDavStandaloneOptions.tlsCertificate = cmdWebDav.Flag.String("cert.file", "", "path to the TLS certificate file")
 	webDavStandaloneOptions.cacheDir = cmdWebDav.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks")
 	webDavStandaloneOptions.cacheSizeMB = cmdWebDav.Flag.Int64("cacheCapacityMB", 0, "local cache capacity in MB")
+	webDavStandaloneOptions.filerRootPath = cmdWebDav.Flag.String("filer.path", "/", "use this remote path from filer server")
 }
 
 var cmdWebDav = &Command{
@@ -104,6 +106,7 @@ func (wo *WebDavOption) startWebDav() bool {
 
 	ws, webdavServer_err := weed_server.NewWebDavServer(&weed_server.WebDavOption{
 		Filer:          filerAddress,
+		FilerRootPath:  *wo.filerRootPath,
 		GrpcDialOption: grpcDialOption,
 		Collection:     *wo.collection,
 		Replication:    *wo.replication,

weed/server/webdav_server.go

@@ -26,6 +26,7 @@ import (
 
 type WebDavOption struct {
 	Filer          pb.ServerAddress
+	FilerRootPath  string
 	DomainName     string
 	BucketsPath    string
 	GrpcDialOption grpc.DialOption
@@ -58,6 +59,11 @@ func NewWebDavServer(option *WebDavOption) (ws *WebDavServer, err error) {
 
 	fs, _ := NewWebDavFileSystem(option)
 
+	// Fix no set filer.path , accessing "/" returns "//"
+	if option.FilerRootPath == "/" {
+		option.FilerRootPath = ""
+	}
+
 	ws = &WebDavServer{
 		option:         option,
 		grpcDialOption: security.LoadClientTLS(util.GetViper(), "grpc.filer"),
@@ -195,7 +201,8 @@ func (fs *WebDavFileSystem) Mkdir(ctx context.Context, fullDirPath string, perm
 }
 
 func (fs *WebDavFileSystem) OpenFile(ctx context.Context, fullFilePath string, flag int, perm os.FileMode) (webdav.File, error) {
-
+	// Add filer.path
+	fullFilePath = fs.option.FilerRootPath + fullFilePath
 	glog.V(2).Infof("WebDavFileSystem.OpenFile %v %x", fullFilePath, flag)
 
 	var err error
@@ -367,7 +374,8 @@ func (fs *WebDavFileSystem) stat(ctx context.Context, fullFilePath string) (os.F
 }
 
 func (fs *WebDavFileSystem) Stat(ctx context.Context, name string) (os.FileInfo, error) {
-
+	// Add filer.path
+	name = fs.option.FilerRootPath + name
 	glog.V(2).Infof("WebDavFileSystem.Stat %v", name)
 
 	return fs.stat(ctx, name)