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GCS: add a trailing / to "directories"

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This way SFTPGo should be compatible with Google Cloud console.

This change should be backward compatibile, testing is welcome

Fixes #464
This commit is contained in:
Nicola Murino 2021-06-24 19:36:01 +02:00
parent e09bdd43d4
commit 93dfb03eaf
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GPG key ID: 2F1FB59433D5A8CB
1 changed files with 48 additions and 25 deletions
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73
vfs/gcsfs.go
View file

@ -5,7 +5,6 @@ package vfs
import (
"context"
"encoding/json"
"errors"
"fmt"
"io"
"mime"
@ -112,37 +111,18 @@ func (fs *GCSFs) ConnectionID() string {
// Stat returns a FileInfo describing the named file
func (fs *GCSFs) Stat(name string) (os.FileInfo, error) {
var result *FileInfo
var err error
if name == "" || name == "." {
err := fs.checkIfBucketExists()
if err != nil {
return result, err
return nil, err
}
return NewFileInfo(name, true, 0, time.Now(), false), nil
}
if fs.config.KeyPrefix == name+"/" {
return NewFileInfo(name, true, 0, time.Now(), false), nil
}
attrs, err := fs.headObject(name)
if err == nil {
objSize := attrs.Size
objectModTime := attrs.Updated
isDir := attrs.ContentType == dirMimeType || strings.HasSuffix(attrs.Name, "/")
return NewFileInfo(name, isDir, objSize, objectModTime, false), nil
}
if !fs.IsNotExist(err) {
return result, err
}
// now check if this is a prefix (virtual directory)
hasContents, err := fs.hasContents(name)
if err != nil {
return nil, err
}
if hasContents {
return NewFileInfo(name, true, 0, time.Now(), false), nil
}
return nil, errors.New("404 no such file or directory")
_, info, err := fs.getObjectStat(name)
return info, err
}
// Lstat returns a FileInfo describing the named file
@ -229,7 +209,7 @@ func (fs *GCSFs) Rename(source, target string) error {
if source == target {
return nil
}
fi, err := fs.Stat(source)
realSourceName, fi, err := fs.getObjectStat(source)
if err != nil {
return err
}
@ -241,8 +221,11 @@ func (fs *GCSFs) Rename(source, target string) error {
if hasContents {
return fmt.Errorf("cannot rename non empty directory: %#v", source)
}
if !strings.HasSuffix(target, "/") {
target += "/"
}
}
src := fs.svc.Bucket(fs.config.Bucket).Object(source)
src := fs.svc.Bucket(fs.config.Bucket).Object(realSourceName)
dst := fs.svc.Bucket(fs.config.Bucket).Object(target)
ctx, cancelFn := context.WithDeadline(context.Background(), time.Now().Add(fs.ctxTimeout))
defer cancelFn()
@ -277,11 +260,18 @@ func (fs *GCSFs) Remove(name string, isDir bool) error {
if hasContents {
return fmt.Errorf("cannot remove non empty directory: %#v", name)
}
if !strings.HasSuffix(name, "/") {
name += "/"
}
}
ctx, cancelFn := context.WithDeadline(context.Background(), time.Now().Add(fs.ctxTimeout))
defer cancelFn()
err := fs.svc.Bucket(fs.config.Bucket).Object(name).Delete(ctx)
if fs.IsNotExist(err) && isDir {
// we can have directories without a trailing "/" (created using v2.1.0 and before)
err = fs.svc.Bucket(fs.config.Bucket).Object(strings.TrimSuffix(name, "/")).Delete(ctx)
}
metrics.GCSDeleteObjectCompleted(err)
return err
}
@ -292,6 +282,9 @@ func (fs *GCSFs) Mkdir(name string) error {
if !fs.IsNotExist(err) {
return err
}
if !strings.HasSuffix(name, "/") {
name += "/"
}
_, w, _, err := fs.Create(name, -1)
if err != nil {
return err
@ -613,6 +606,36 @@ func (fs *GCSFs) resolve(name string, prefix string) (string, bool) {
return result, isDir
}
// getObjectStat returns the stat result and the real object name as first value
func (fs *GCSFs) getObjectStat(name string) (string, os.FileInfo, error) {
attrs, err := fs.headObject(name)
if err == nil {
objSize := attrs.Size
objectModTime := attrs.Updated
isDir := attrs.ContentType == dirMimeType || strings.HasSuffix(attrs.Name, "/")
return name, NewFileInfo(name, isDir, objSize, objectModTime, false), nil
}
if !fs.IsNotExist(err) {
return "", nil, err
}
// now check if this is a prefix (virtual directory)
hasContents, err := fs.hasContents(name)
if err != nil {
return "", nil, err
}
if hasContents {
return name, NewFileInfo(name, true, 0, time.Now(), false), nil
}
// finally check if this is an object with a trailing /
attrs, err = fs.headObject(name + "/")
if err != nil {
return "", nil, err
}
objSize := attrs.Size
objectModTime := attrs.Updated
return name + "/", NewFileInfo(name, true, objSize, objectModTime, false), nil
}
func (fs *GCSFs) checkIfBucketExists() error {
ctx, cancelFn := context.WithDeadline(context.Background(), time.Now().Add(fs.ctxTimeout))
defer cancelFn()