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package needle_map
import (
. "github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/google/btree"
)
type NeedleValue struct {
Key NeedleId
Offset Offset `comment:"Volume offset"` //since aligned to 8 bytes, range is 4G*8=32G
Size Size `comment:"Size of the data portion"`
}
func (this NeedleValue) Less(than btree.Item) bool {
that := than.(NeedleValue)
return this.Key < that.Key
}
func (nv NeedleValue) ToBytes() []byte {
return ToBytes(nv.Key, nv.Offset, nv.Size)
}
func ToBytes(key NeedleId, offset Offset, size Size) []byte {
bytes := make([]byte, NeedleIdSize+OffsetSize+SizeSize)
NeedleIdToBytes(bytes[0:NeedleIdSize], key)
OffsetToBytes(bytes[NeedleIdSize:NeedleIdSize+OffsetSize], offset)
util.Uint32toBytes(bytes[NeedleIdSize+OffsetSize:NeedleIdSize+OffsetSize+SizeSize], uint32(size))
return bytes
}
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