// Returns the first error the occurred during the writing if any.
func (w *metacacheBlockWriter) Close() error {
	w.wg.Wait()
	return w.streamErr
}

type metacacheBlock struct {
	data  []byte
	n     int
	First string `json:"f"`
	Last  string `json:"l"`
	EOS   bool   `json:"eos,omitempty"`
}

func (b metacacheBlock) headerKV() map[string]string {
	json := jsoniter.ConfigCompatibleWithStandardLibrary

	testCases := []struct {
		inputConfig            string
		objectName             string
		objectTags             string
		objectModTime          time.Time
		isDelMarker            bool
		hasManyVersions        bool
		expectedAction         Action
		isNoncurrent           bool
		objectSuccessorModTime time.Time
		versionID              string
	}{

		if err != nil {
			log.Fatalf("loading imports: %v\n%s", err, out)
		}

		var stdPackages []string
		importMap := make(map[string]map[string]string)
		importDir := make(map[string]string)
		dec := json.NewDecoder(bytes.NewReader(out))
		for {
			var pkg struct {
				ImportPath, Dir string
				ImportMap       map[string]string
				Standard        bool
			}
			err := dec.Decode(&pkg)
			if err == io.EOF {
				break

func (h Header) allowedFormats() (format Format, paxHdrs map[string]string, err error) {
	format = FormatUSTAR | FormatPAX | FormatGNU
	paxHdrs = make(map[string]string)

	var whyNoUSTAR, whyNoPAX, whyNoGNU string
	var preferPAX bool // Prefer PAX over USTAR
	verifyString := func(s string, size int, name, paxKey string) {
		// NUL-terminator is optional for path and linkpath.

	}

	if result.After.Drives != nil {
		opts.Tags = map[string]interface{}{"drives-result": result.After.Drives}
	}

	auditLogInternal(ctx, opts)
}

// Heals an object by re-writing corrupt/missing erasure blocks.
func (er *erasureObjects) healObject(ctx context.Context, bucket string, object string, versionID string, opts madmin.HealOpts) (result madmin.HealResultItem, err error) {
	dryRun := opts.DryRun

	return func() ([]dsync.NetLocker, string) {
		lockers := make([]dsync.NetLocker, len(s.erasureLockers[setIndex]))
		copy(lockers, s.erasureLockers[setIndex])
		return lockers, s.erasureLockOwner
	}
}

func (s *erasureSets) GetEndpointStrings(setIndex int) func() []string {
	return func() []string {
		eps := make([]string, s.setDriveCount)

		{"small-1", []int64{509}, make(map[string]string)},
		{"small-2", []int64{5 * oneMiB}, make(map[string]string)},
		// // // cases 5-8: multipart part objects
		{"mp-0", []int64{5 * oneMiB, 1}, make(map[string]string)},
		{"mp-1", []int64{5*oneMiB + 1, 1}, make(map[string]string)},
		{"mp-2", []int64{5487701, 5487799, 3}, make(map[string]string)},
		{"mp-3", []int64{10499807, 10499963, 7}, make(map[string]string)},

	}

	// Set up netlink routes for localhost
	cidrs := []string{"0.0.0.0/0"}
	if cfg.EnableIPv6 {
		cidrs = append(cidrs, "0::0/0")
	}
	for _, fullCIDR := range cidrs {
		_, localhostDst, err := net.ParseCIDR(fullCIDR)
		if err != nil {
			return fmt.Errorf("parse CIDR: %v", err)
		}

		netlinkRoutes := []*netlink.Route{

			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         target.AmqpExchangeType,
			Description: "AMQP exchange type",
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         target.AmqpRoutingKey,
			Description: "routing key for publishing",
			Optional:    true,
			Type:        "string",
			Sensitive:   true,
		},
		config.HelpKV{

	}
	fi.Metadata = make(map[string]string, len(j.MetaSys))
	for k, v := range j.MetaSys {
		fi.Metadata[k] = string(v)
	}

	fi.ReplicationState = GetInternalReplicationState(j.MetaSys)
	if j.FreeVersion() {
		fi.SetTierFreeVersion()
		fi.TransitionTier = string(j.MetaSys[metaTierName])
		fi.TransitionedObjName = string(j.MetaSys[metaTierObjName])
		fi.TransitionVersionID = string(j.MetaSys[metaTierVersionID])
	}