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