xl.meta-v1.2.zst xl.meta-v1.2.zst...

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Anis Eleuch <******@****.***> 1712232280 +0100

	case bucketPolicyConfig:
		meta.PolicyConfigJSON = configData
		meta.PolicyConfigUpdatedAt = updatedAt
	case bucketNotificationConfig:
		meta.NotificationConfigXML = configData
		meta.NotificationConfigUpdatedAt = updatedAt
	case bucketLifecycleConfig:
		meta.LifecycleConfigXML = configData
		meta.LifecycleConfigUpdatedAt = updatedAt
	case bucketSSEConfig:
		meta.EncryptionConfigXML = configData

		}

		// Always check data, if we got it.
		if (len(meta.Data) > 0 || meta.Size == 0) && len(meta.Parts) > 0 {
			checksumInfo := meta.Erasure.GetChecksumInfo(meta.Parts[0].Number)
			verifyErr := bitrotVerify(bytes.NewReader(meta.Data),
				int64(len(meta.Data)),
				meta.Erasure.ShardFileSize(meta.Size),
				checksumInfo.Algorithm,
				checksumInfo.Hash, meta.Erasure.ShardSize())
			dataErrsByPart[0][i] = convPartErrToInt(verifyErr)

```

### Using xl-meta

## Description of `xl.meta`

`xl.meta` is a new self describing backend format used by MinIO to support AWS S3 compatible versioning.
This file is the source of truth for each `version` at rest. `xl.meta` is a msgpack file serialized from a
well defined data structure. To understand `xl.meta` here are the few things to start with

//go:generate msgp -file=$GOFILE -unexported

// A xlMetaV1Object represents `xl.meta` metadata header.
type xlMetaV1Object struct {
	Version string   `json:"version"` // Version of the current `xl.meta`.
	Format  string   `json:"format"`  // Format of the current `xl.meta`.
	Stat    StatInfo `json:"stat"`    // Stat of the current object `xl.meta`.
	// Erasure coded info for the current object `xl.meta`.
	Erasure ErasureInfo `json:"erasure"`

		}
		if len(meta.metadata) == 0 {
			metaDataPoolPut(meta.metadata)
			meta.metadata = nil
		}
		if !inclDirs && (meta.isDir() || (!inclVersions && meta.isObjectDir() && meta.isLatestDeletemarker())) {
			continue
		}
		if !inclDeleted && meta.isLatestDeletemarker() && meta.isObject() && !meta.isObjectDir() {
			continue
		}
		res = append(res, meta)
	}

syntax = "proto2";

package k8s.io.apimachinery.pkg.apis.meta.v1beta1;

import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto";
import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";

// Package-wide variables from generator "generated".
option go_package = "k8s.io/apimachinery/pkg/apis/meta/v1beta1";

// PartialObjectMetadataList contains a list of objects containing only their metadata.