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54 lines
1.9 KiB
54 lines
1.9 KiB
### Backend format `xl.json`
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```go
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// ObjectPartInfo Info of each part kept in the multipart metadata
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// file after CompleteMultipartUpload() is called.
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type ObjectPartInfo struct {
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Number int `json:"number"`
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Name string `json:"name"`
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ETag string `json:"etag"`
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Size int64 `json:"size"`
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}
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// checkSumInfo - carries checksums of individual scattered parts per disk.
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type checkSumInfo struct {
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Name string `json:"name"`
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Algorithm string `json:"algorithm"`
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Hash string `json:"hash"`
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}
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// erasureInfo - carries erasure coding related information, block
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// distribution and checksums.
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type erasureInfo struct {
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Algorithm string `json:"algorithm"`
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DataBlocks int `json:"data"`
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ParityBlocks int `json:"parity"`
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BlockSize int64 `json:"blockSize"`
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Index int `json:"index"`
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Distribution []int `json:"distribution"`
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Checksum []checkSumInfo `json:"checksum,omitempty"`
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}
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// statInfo - carries stat information of the object.
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type statInfo struct {
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Size int64 `json:"size"` // Size of the object `xl.json`.
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ModTime time.Time `json:"modTime"` // ModTime of the object `xl.json`.
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}
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// A xlMetaV1 represents `xl.json` metadata header.
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type xlMetaV1 struct {
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Version string `json:"version"` // Version of the current `xl.json`.
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Format string `json:"format"` // Format of the current `xl.json`.
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Stat statInfo `json:"stat"` // Stat of the current object `xl.json`.
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// Erasure coded info for the current object `xl.json`.
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Erasure erasureInfo `json:"erasure"`
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// MinIO release tag for current object `xl.json`.
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MinIO struct {
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Release string `json:"release"`
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} `json:"minio"`
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// Metadata map for current object `xl.json`.
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Meta map[string]string `json:"meta,omitempty"`
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// Captures all the individual object `xl.json`.
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Parts []ObjectPartInfo `json:"parts,omitempty"`
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}
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```
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