コード例 #1
0
ファイル: dir.go プロジェクト: daozhao/s3weed
// List lists a bucket, all objects Key starts with prefix, delimiter segments
// Key, thus the returned commonprefixes (think a generalized filepath
// structure, where / is the delimiter, a commonprefix is a subdir)
func (root hier) List(owner s3intf.Owner, bucket, prefix, delimiter, marker string,
	limit, skip int) (
	objects []s3intf.Object, commonprefixes []string,
	truncated bool, err error) {
	dh, e := os.Open(filepath.Join(string(root), owner.ID(), bucket))
	if e != nil {
		err = e
		return
	}
	defer dh.Close()
	var (
		infos     []os.FileInfo
		key, etag string
		md5hash   []byte
		ok        bool
	)

	objects = make([]s3intf.Object, 0, 64)
	f := s3intf.NewListFilter(prefix, delimiter, marker, limit, skip)
OUTER:
	for {
		infos, e = dh.Readdir(limit)
		if e != nil {
			if e == io.EOF {
				break
			}
			err = e
			return
		}

		for _, fi := range infos {
			if key, _, _, md5hash, err = decodeFilename(fi.Name()); err != nil {
				return
			}
			if ok, e = f.Check(key); e != nil {
				if e == io.EOF {
					break OUTER
				}
				err = fmt.Errorf("error checking %s: %s", key, e)
				return
			} else if ok {
				if md5hash != nil && len(md5hash) == 16 {
					etag = hex.EncodeToString(md5hash)
				} else {
					etag = ""
				}
				objects = append(objects,
					s3intf.Object{Key: string(key), Owner: owner,
						ETag: etag, LastModified: fi.ModTime(), Size: fi.Size()})
			}
		}
	}
	commonprefixes, truncated = f.Result()
	return
}
コード例 #2
0
ファイル: weed.go プロジェクト: daozhao/s3weed
// List lists a bucket, all objects Key starts with prefix, delimiter segments
// Key, thus the returned commonprefixes (think a generalized filepath
// structure, where / is the delimiter, a commonprefix is a subdir)
func (m master) List(owner s3intf.Owner, bucket, prefix, delimiter, marker string,
	limit, skip int) (
	objects []s3intf.Object, commonprefixes []string,
	truncated bool, err error) {

	m.Lock()
	o, ok := m.owners[owner.ID()]
	if !ok {
		m.Unlock()
		err = fmt.Errorf("unknown owner %s", owner.ID())
		return
	}
	o.Lock()
	b, ok := o.buckets[bucket]
	o.Unlock()
	m.Unlock()
	if !ok {
		err = fmt.Errorf("unknown bucket %s", bucket)
		return
	}

	err = nil
	enum, e := b.db.SeekFirst()
	if e != nil {
		if e == io.EOF { //empty
			return
		}
		err = fmt.Errorf("error getting first: %s", e)
		return
	}
	var (
		key, val []byte
		vi       = new(weedutils.ValInfo)
		etag     string
	)
	objects = make([]s3intf.Object, 0, 64)
	f := s3intf.NewListFilter(prefix, delimiter, marker, limit, skip)
	for {
		if key, val, e = enum.Next(); e != nil {
			if e == io.EOF {
				break
			}
			err = fmt.Errorf("error seeking next: %s", e)
			return
		}
		//log.Printf("key=%q", key)
		if ok, e = f.Check(string(key)); e != nil {
			if e == io.EOF {
				break
			}
			err = fmt.Errorf("error checking %s: %s", key, e)
			return
		} else if ok {
			if err = vi.Decode(val); err != nil {
				return
			}
			if vi.MD5 != nil && len(vi.MD5) == 16 {
				etag = hex.EncodeToString(vi.MD5)
			} else {
				etag = ""
			}
			objects = append(objects,
				s3intf.Object{Key: string(key), Owner: owner,
					ETag: etag, LastModified: vi.Created, Size: vi.Size})
		}
	}
	commonprefixes, truncated = f.Result()
	return
}