mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-26 04:18:59 +02:00
70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
package types
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import (
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"fmt"
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"strconv"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type Offset struct {
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OffsetHigher
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OffsetLower
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}
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type Size int32
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func (s Size) IsDeleted() bool {
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return s < 0 || s == TombstoneFileSize
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}
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func (s Size) IsValid() bool {
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return s > 0 && s != TombstoneFileSize
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}
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type OffsetLower struct {
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b3 byte
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b2 byte
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b1 byte
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b0 byte // the smaller byte
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}
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type Cookie uint32
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const (
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SizeSize = 4 // uint32 size
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NeedleHeaderSize = CookieSize + NeedleIdSize + SizeSize
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DataSizeSize = 4
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NeedleMapEntrySize = NeedleIdSize + OffsetSize + SizeSize
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TimestampSize = 8 // int64 size
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NeedlePaddingSize = 8
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TombstoneFileSize = Size(-1)
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CookieSize = 4
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)
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func CookieToBytes(bytes []byte, cookie Cookie) {
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util.Uint32toBytes(bytes, uint32(cookie))
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}
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func Uint32ToCookie(cookie uint32) Cookie {
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return Cookie(cookie)
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}
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func BytesToCookie(bytes []byte) Cookie {
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return Cookie(util.BytesToUint32(bytes[0:4]))
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}
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func ParseCookie(cookieString string) (Cookie, error) {
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cookie, err := strconv.ParseUint(cookieString, 16, 32)
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if err != nil {
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return 0, fmt.Errorf("needle cookie %s format error: %v", cookieString, err)
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}
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return Cookie(cookie), nil
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}
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func BytesToSize(bytes []byte) Size {
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return Size(util.BytesToUint32(bytes))
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}
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func SizeToBytes(bytes []byte, size Size) {
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util.Uint32toBytes(bytes, uint32(size))
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}
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